1.Comparison of oxycodone and sufentanil in patient-controlled intravenous analgesia for postoperative patients: a meta-analysis of randomized controlled trials.
Xixia FENG ; Pingliang YANG ; Zaibo LIAO ; Ruihao ZHOU ; Lu CHEN ; Ling YE
Chinese Medical Journal 2023;136(1):45-52
		                        		
		                        			BACKGROUND:
		                        			Managing acute postoperative pain is challenging for anesthesiologists, surgeons, and patients, leading to adverse events despite making significant progress. Patient-controlled intravenous analgesia (PCIA) is a recommended solution, where oxycodone has depicted unique advantages in recent years. However, controversy still exists in clinical practice and this study aimed to compare two drugs in PCIA.
		                        		
		                        			METHODS:
		                        			We performed a literature search in PubMed, Embase, the Cochrane Central Register of Controlled Trials, Web of Science, Chinese National Knowledge Infrastructure, Wanfang, and VIP databases up to December 2020 to select specific randomized controlled trials (RCTs) comparing the efficacy of oxycodone with sufentanil in PCIA. The analgesic effect was the primary outcome and the secondary outcome included PCIA consumption, the Ramsay sedation scale, patients' satisfaction and side effects.
		                        		
		                        			RESULTS:
		                        			Fifteen RCTs were included in the meta-analysis. Compared with sufentanil, oxycodone showed lower Numerical Rating Scale scores (mean difference [MD] = -0.71, 95% confidence interval [CI]: -1.01 to -0.41; P < 0.001; I2 = 93%), demonstrated better relief from visceral pain (MD = -1.22, 95% CI: -1.58 to -0.85; P < 0.001; I2 = 90%), promoted a deeper sedative level as confirmed by the Ramsay Score (MD = 0.77, 95% CI: 0.35-1.19; P < 0.001; I2 = 97%), and resulted in fewer side effects (odds ratio [OR] = 0.46, 95% CI: 0.35-0.60; P < 0.001; I2 = 11%). There was no statistical difference in the degree of patients' satisfaction (OR = 1.13, 95% CI: 0.88-1.44; P = 0.33; I2 = 72%) and drug consumption (MD = -5.55, 95% CI: -14.18 to 3.08; P = 0.21; I2 = 93%).
		                        		
		                        			CONCLUSION:
		                        			Oxycodone improves postoperative analgesia and causes fewer adverse effects, and could be recommended for PCIA, especially after abdominal surgeries.
		                        		
		                        			REGISTRATION
		                        			PROSPERO; https://www.crd.york.ac.uk/PROSPERO/; CRD42021229973.
		                        		
		                        		
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Oxycodone/therapeutic use*
		                        			;
		                        		
		                        			Sufentanil/therapeutic use*
		                        			;
		                        		
		                        			Randomized Controlled Trials as Topic
		                        			;
		                        		
		                        			Pain, Postoperative/drug therapy*
		                        			;
		                        		
		                        			Drug-Related Side Effects and Adverse Reactions
		                        			;
		                        		
		                        			Analgesia, Patient-Controlled
		                        			
		                        		
		                        	
2.Effect of Wrist-Ankle Acupuncture on Postoperative Analgesia after Total Knee Arthroplasty.
Hai-Tao CAO ; Wan ZHANG ; Cheng LUO ; Hong-Bo ZHAO ; Jian-Ming LIU
Chinese journal of integrative medicine 2023;29(3):253-257
		                        		
		                        			OBJECTIVE:
		                        			To evaluate the effect of wrist-ankle acupuncture (WAA) in pain and functional recovery after total knee arthroplasty (TKA).
		                        		
		                        			METHODS:
		                        			From June to September 2020, 94 participants were included from the Second Hospital of Tangshan and randomly assigned to the WAA group (47 cases) and the sham WAA group (47 cases) by a random number table, receiving real or sham WAA treatment, respectively. The primary outcome measure involved the visual analogue scale (VAS) scores at rest and in motion. The secondary outcomes involved the range of motion (ROM) of the knee joints, straight-leg raising time, postoperative weight-bearing time, sufentanil consumption within 48 h of patient-controlled analgesia (PCA) pump, length of hospital stay, and postoperative complications.
		                        		
		                        			RESULTS:
		                        			The VAS scores on the 3rd, 5th, and 7th postoperative days at rest and in motion was significantly lower in the WAA group than that of the sham WAA group (P<0.01). The ROM on the 1st, 2nd, and 3rd PODs was significantly higher in the WAA group than that of the sham WAA group (P<0.01). In comparison to the sham WAA group, the sufentanil consumption within 48 h of PCA pump was significantly less in the WAA group (156.3 ± 12.2 µg vs. 128.8 ± 9.8 µg, P<0.01). There was no significant difference in active straight-leg raising time, postoperative weight-bearing time, length of hospital stay, and postoperative complications between the two groups (P>0.05).
		                        		
		                        			CONCLUSIONS
		                        			WAA could alleviate post-TKA pain, improve knee joint function, and reduce the sufentanil consumption within 48 h of PCA pump. WAA is a safe and effective treatment in the perioperative analgesic management for TKA.
		                        		
		                        		
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Arthroplasty, Replacement, Knee/adverse effects*
		                        			;
		                        		
		                        			Ankle
		                        			;
		                        		
		                        			Wrist
		                        			;
		                        		
		                        			Sufentanil
		                        			;
		                        		
		                        			Pain, Postoperative/therapy*
		                        			;
		                        		
		                        			Acupuncture Therapy/adverse effects*
		                        			;
		                        		
		                        			Analgesia
		                        			;
		                        		
		                        			Knee Joint
		                        			
		                        		
		                        	
3.Lumbar plexus block combined with general anesthesia in treating postoperative delirium of hip fracture in elderly patients.
Yao XIAO ; Ke CHEN ; Ke-Wei TIAN ; Xu ZHOU ; Min LI ; Sen CHEN ; Zhen-Zhen ZHANG
China Journal of Orthopaedics and Traumatology 2023;36(8):731-736
		                        		
		                        			OBJECTIVE:
		                        			To explore lumbar plexus nerve block combined with general anesthesia in elderly patients undergoing hip operation could improve analgesia effect, reduce consumption of analgesics, prevent inflammatory reaction, and avoid postoperative delirium(POD).
		                        		
		                        			METHODS:
		                        			Totally 200 elderly patients underwent hip fracture surgery from February 2020 to September 2021 were selected and were divided into observation group and control group according to different anesthesia methods. There were 97 patients in observation group including 66 males and 33 females; aged (70.23±6.60) years old;body mass index (BMI) was (23.13±1.94) kg·m-2;19 patients with hemi arthroplasty, 46 patients with total hip arthroplasty, and 32 patients with femur intertrochanteric fixation;treated with lumbar plexus block combined with general anesthesia. There were 94 patients in control group, including 66 males and 33 females;aged (68.80±6.24) years old;BMI was (22.88±1.85) kg·m-2;14 patients with hemi arthroplasty, 39 patients with total hip arthroplasty, and 41 patients with femur intertrochanteric fixation;treated with only general anesthesia. Nine patients were separated due to the change of surgical protocol or chronic disease. The incidence of POD at 1, 2 and 3 days after surgery, mini-mental state examination (MMSE) score, visual analogue scale (VAS) in resting state, serum inflammatory factors levels [such as C-reactive protein(CRP), interleukin-1β(IL-1β), interleukin-6(IL-6), tumor necrosis factor-α(TNF-α)] at 1 d before operation, 1 and 6 h after surgery, consumption of sufentanil between two groups were compared.
		                        		
		                        			RESULTS:
		                        			The incidences of POD in observation group were lower than control group at 1, 2 and 3 days of operation (P<0.05), MMSE score in observation group was higher than that of control group (P<0.05), VAS in observation group was lower than that of control group (P<0.01). The incidences of POD decreased and MMSE score were increaed in both groups day by day (P<0.01). The levels of CRP, IL-1β, IL-6 and TNF-α in observation group were lower than that of control group at 1 h after operation (P<0.01). The levels of CRP, IL-6 and TNF-α in observation group were lower than that of control group at 6 h after operation (P<0.01), while no statisitical difference in IL-1β between two groups(P>0.05). The consumption of sufentanil in observation group was lower than that of control group (P<0.01).
		                        		
		                        			CONCLUSION
		                        			Compared with general anesthesia, lumbar plexus nerve block combined with general anesthesia for the operations of hip fracture in elderly patients has better analgesic effect, has advantages of slight inflammatory reaction, and could decrease consumption of opioid and incidence of POD.
		                        		
		                        		
		                        		
		                        			Aged
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Male
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Middle Aged
		                        			;
		                        		
		                        			Emergence Delirium
		                        			;
		                        		
		                        			Interleukin-6
		                        			;
		                        		
		                        			Sufentanil
		                        			;
		                        		
		                        			Tumor Necrosis Factor-alpha
		                        			;
		                        		
		                        			Hip Fractures/surgery*
		                        			;
		                        		
		                        			Anesthesia, General
		                        			;
		                        		
		                        			Inflammation
		                        			;
		                        		
		                        			Lumbosacral Plexus
		                        			
		                        		
		                        	
4.Analgesic effect of buccal acupuncture on patients after lumbar spinal fusion: a randomized controlled trial.
Guo-Sheng LIU ; Ning LI ; Rui-Xia MENG ; Pei-Shan WANG
Chinese Acupuncture & Moxibustion 2023;43(7):743-746
		                        		
		                        			OBJECTIVE:
		                        			To observe the effect of buccal acupuncture on pain after lumbar spinal fusion.
		                        		
		                        			METHODS:
		                        			Sixty patients undergoing lumbar spinal fusion were randomly divided into an observation group (30 cases, 1 case dropped off) and a control group (30 cases, 1 case was eliminated). The patients in the control group were treated with routine anesthesia. On the basis of the control group, the patients in the observation group were treated with buccal acupuncture at bilateral back point, waist point, and sacral point for 30 min per treatment. The first acupuncture was given before anesthesia induction, and then once a day postoperation for two days, totally 3 treatments. The dosage of sufentanil, the number of remedial analgesia, and the incidence of nausea and vomiting within 48 h after surgery were compared between the two groups; rest and motion visual analogue scale (VAS) scores at 2 (T1), 8 (T2), 12 (T3), 24 (T4), and 48 (T5) h after surgery were observed; the quality of recovery-15 scale (QoR-15) at 24 and 48 h after surgery were evaluated.
		                        		
		                        			RESULTS:
		                        			The dosage of sufentanil and the number of remedial analgesia within 48 h after surgery in the observation group were lower than those in the control group (P<0.01). There was no significant statistically difference in rest and motion VAS scores between the two groups in T1, T2, T3, T4 and T5 (P>0.05). The QoR-15 scores in the observation group at 24 and 48 h after surgery were higher than those in the control group (P<0.01). The incidence of nausea in the observation group was lower than that in the control group (P<0.05).
		                        		
		                        			CONCLUSION
		                        			Buccal acupuncture could reduce the amount of postoperative analgesic drugs of patients after lumbar spinal fusion, and promote early postoperative recovery.
		                        		
		                        		
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Spinal Fusion/adverse effects*
		                        			;
		                        		
		                        			Sufentanil
		                        			;
		                        		
		                        			Acupuncture Therapy
		                        			;
		                        		
		                        			Pain Management
		                        			;
		                        		
		                        			Pain
		                        			;
		                        		
		                        			Nausea
		                        			
		                        		
		                        	
5.Effects of bilateral erector spinae plane block for posterior lumbar spine surgery in elderly patients.
Jie PENG ; Wenqi ZHANG ; Youping WU ; Yongyuan MA ; Wenbin QIE ; Bo XU
Journal of Central South University(Medical Sciences) 2023;48(2):206-212
		                        		
		                        			OBJECTIVES:
		                        			With the rapid development of aging population, the number of elderly patients undergoing posterior lumbar spine surgery continues to increase. Lumbar spine surgery could cause moderate to severe postoperative pain, and the conventional opioid-based analgesia techniques have many side effects, which are barriers to the recovery after surgery of the elderly. Previous studies have demonstrated that erector spinae plane block (ESPB) could bring about favorable analgesia in spinal surgery. As far as the elderly are concerned, the analgesic and recovery effects of ESPB on posterior lumbar spine surgery are not completely clear. This study aims to observe the effects of bilateral ESPB on elderly patients undergoing posterior lumbar spine surgery, and to improve the anesthesia techniques.
		                        		
		                        			METHODS:
		                        			A total of 70 elderly patients of both sex, who were selected from May 2020 to November 2021, scheduled for elective posterior lumbar spine surgery, and in the age of 60-79 years, with American Society of Anesthesiologists class Ⅱ-Ⅲ, were divided into a ESPB group and a control (C) group using a random number table method, with 35 patients each. Before general anesthesia induction, 20 mL 0.4% ropivacaine was injected to the transverse process of L3 or L4 bilaterally in the ESPB group and only saline in the C group. The score of Numerical Rating Scale (NRS) indicating pain at rest and on movement within 48 h after operation, time of first patient control analgesia (PCA), cumulative consumptions of sufentanil within 48 hours, Leeds Sleep Evaluation Questionnaire (LSEQ) scores on the morning of day 1 and day 2 after operation, Quality of Recovery-15 (QoR-15) scores at 24 and 48 h after operation, full diet intake times, perioperative adverse reactions such as intraoperative hypotension, postoperative dizziness, nausea, vomiting, and constipation were compared between the 2 groups.
		                        		
		                        			RESULTS:
		                        			A total of 70 patients were enrolled and 62 subjects completed the study, including 32 in the ESPB group and 30 in the C group. Compared with the C group, the postoperative NRS scores at rest at 2, 4, 6, and 12 h and on movementat at 2, 4, and 6 h were lower, time of first PCA was later, sufentanil consumptions were significantly decreased during 0-12 h and 12-24 h after operation, LSEQ scores on the morning of day 1 and QoR-15 scores at 24 and 48 h after operation were higher, full diet intakes achieved earlier in the ESPB group (all P<0.05). There were no significant differences in the incidences of intraoperative hypotension, postoperative dizziness, nausea, vomiting, and constipation between the 2 groups (all P>0.05).
		                        		
		                        			CONCLUSIONS
		                        			Providing favorable analgesic effects with reduced opioids consumption, bilateral ESPB for posterior lumbar spine surgery in the elderly patients could also improve postoperative sleep quality, promote gastrointestinal functional restoration, and enhance recovery with few adverse reactions.
		                        		
		                        		
		                        		
		                        			Aged
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Middle Aged
		                        			;
		                        		
		                        			Sufentanil
		                        			;
		                        		
		                        			Dizziness
		                        			;
		                        		
		                        			Pain
		                        			;
		                        		
		                        			Anesthesia, General
		                        			;
		                        		
		                        			Constipation
		                        			;
		                        		
		                        			Hypotension
		                        			;
		                        		
		                        			Nerve Block
		                        			;
		                        		
		                        			Pain, Postoperative
		                        			;
		                        		
		                        			Analgesics, Opioid
		                        			;
		                        		
		                        			Ultrasonography, Interventional
		                        			
		                        		
		                        	
6.Sufentanil promotes autophagy and improves ischemia -reperfusion -induced acute kidney injury via up -regulating microRNA -145.
Yan LU ; Zongfang PIAO ; Jianling LI ; Ling LI ; Ruhong LI
Journal of Central South University(Medical Sciences) 2022;47(10):1315-1323
		                        		
		                        			OBJECTIVES:
		                        			Sufentanil has a good protective effect on myocardial and liver injury caused by ischemia reperfusion (IR), but its protective effect on kidney is still unclear. This study aims to investigate whether sufentanil can prevent IR-induced acute kidney injury (AKI) and to determine whether its efficacy is related to miR-145-mediated autophagy.
		                        		
		                        			METHODS:
		                        			A total of 40 rats were randomly divided into 5 groups (n=8 in each group): A sham group, an IR group, a sufentanil group, a sufentanil+miR-145 inhibitor control group (an anti-NC group) and a sufentanil+miR-145 inhibitor group (an anti-miR-145 group). Except for the sham group, the other groups established a rat AKI model induced by IR. The sufentanil group, the sufentanil+anti-NC group, and the sufentanil+anti-miR-145 were injected with sufentanil (1 μg/kg) through femoral vein 30 min before ischemia. The sufentanil+anti-NC group and the sufentanil+anti-miR-145 group were injected with miR-145 inhibitor control or anti-miR-145 (80 mg/kg) through the tail vein before sufentanil pretreatment. The structure and function of kidneys harvested from the rats were evaluated, and the protein levels of autophagy-related proteins, oxidative stress levels, and apoptosis levels were measured.
		                        		
		                        			RESULTS:
		                        			Compared with the IR group, the renal structure and function were improved in the sufentanil group. The levels of blood urea nitrogen (BUN), creatinine (Cr), urinary kidney injury molecule 1 (KIM-1), neutrophil gelatinase related lipid transporter (NGAL), tumor necrosis factor-α (TNF-α), interleukin (IL)-1β, IL-6 and ROS were significantly decreased (all P<0.05). In addition, compared with the IR group, the levels of Beclin-1 and LC3 in renal tissues in the sufentanil group were significantly increased (both P<0.05), and the apoptosis in renal tissues was significantly reduced (P<0.05). Compared with the sufentanil+anti-NC group, the levels of BUN, Cr, KIM-1, NGAL, TNF-α, IL-1β, IL-6 and ROS in the sufentanil+anti-miR-145 group were significantly increased (all P<0.05), the levels of Beclin-1 and LC3 in renal tissues were significantly decreased (both P<0.05), and the apoptosis in renal tissues was significantly increased (P<0.05).
		                        		
		                        			CONCLUSIONS
		                        			Sufentanil can prevent the AKI induced by IR, which is related to the up-regulation of miR-145-mediated autophagy.
		                        		
		                        		
		                        		
		                        			Animals
		                        			;
		                        		
		                        			Rats
		                        			;
		                        		
		                        			Acute Kidney Injury/pathology*
		                        			;
		                        		
		                        			Antagomirs
		                        			;
		                        		
		                        			Autophagy
		                        			;
		                        		
		                        			Beclin-1/metabolism*
		                        			;
		                        		
		                        			Creatinine
		                        			;
		                        		
		                        			Interleukin-6/metabolism*
		                        			;
		                        		
		                        			Ischemia
		                        			;
		                        		
		                        			Kidney/pathology*
		                        			;
		                        		
		                        			Lipocalin-2
		                        			;
		                        		
		                        			MicroRNAs/metabolism*
		                        			;
		                        		
		                        			Reactive Oxygen Species
		                        			;
		                        		
		                        			Reperfusion
		                        			;
		                        		
		                        			Reperfusion Injury/metabolism*
		                        			;
		                        		
		                        			Sufentanil/therapeutic use*
		                        			;
		                        		
		                        			Tumor Necrosis Factor-alpha
		                        			;
		                        		
		                        			Up-Regulation
		                        			
		                        		
		                        	
7.Postoperative low-dose sufentanil combined with transversus abdominis plane block promotes recovery following laparoscopic hysterectomy.
Xuexia JI ; Guobin ZHOU ; Qing WANG ; Qiang SUN ; Jue MA ; Sheng WANG
Journal of Southern Medical University 2019;39(3):369-372
		                        		
		                        			OBJECTIVE:
		                        			To compare the efficacy and safety of postoperative analgesia with low-dose sufentanil combined with transversus abdominis plane (TAP) block and with sufentanil alone in promoting patients'recovery following laparoscopic hysterectomy.
		                        		
		                        			METHODS:
		                        			Sixty patients undergoing laparoscopic hysterectomy in our hospital between September, 2016 and August, 2017 were randomly allocated into two equal groups. In group A, the patients were given postoperative analgesia with 1 μg/kg sufentanil, 9.96 mg tropisetronmesylate, and 200 mg flurbiprofen axetil (diluted with 0.9% NaCl solution to 100 mL, pumped at the rate of 2 mL/h) combined with TAP block; in group B, the patients received similar postoperative analgesia but at a higher dose of sufentanil (2 μg/kg) without TAP block. Visual analogue scale (VAS) was used to evaluate pain at 15 min and at 4, 8, 12, 24 and 48 h postoperatively, and the first off-bed time, the length of postoperative hospital stay and the incidence of postoperative nausea and vomiting (PONV) were recorded in all the patients.
		                        		
		                        			RESULTS:
		                        			Compared with those in group B, the patients in group A had significantly lower VAS scores at 15 min, 4 h, 8 h, and 12 h postoperatively ( < 0.01) with also statistically shorter first off-bed time and postoperative hospital stay ( < 0.01). Two (6.7%) patients in group A had mild PONV, and 6 (20.0%) in group B had PONV (including 4 with mild and 2 with moderate PONV).
		                        		
		                        			CONCLUSIONS
		                        			Lowdose sufentanil combined with TAP block is effective for postoperative analgesia after laparoscopic hysterectomy and helps to reduce the incidence of PONV and shorten the first off-bed time and postoperative hospital stay to promote the recovery of the patients.
		                        		
		                        		
		                        		
		                        			Abdominal Muscles
		                        			;
		                        		
		                        			Analgesics, Opioid
		                        			;
		                        		
		                        			Female
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Hysterectomy
		                        			;
		                        		
		                        			Laparoscopy
		                        			;
		                        		
		                        			Pain Measurement
		                        			;
		                        		
		                        			Pain, Postoperative
		                        			;
		                        		
		                        			Sufentanil
		                        			
		                        		
		                        	
8.Efficacy of erector spinae block versus retrolaminar block for postoperative analgesia following posterior lumbar surgery.
Journal of Southern Medical University 2019;39(6):736-739
		                        		
		                        			OBJECTIVE:
		                        			To compare the effect of erector spinae plane block and retrolaminar block for relieving acute pain after posterior lumbar surgery.
		                        		
		                        			METHODS:
		                        			Eighty-nine patients undergoing selective posterior lumbar surgery under general anesthesia in our hospital between January and December, 2018, were recruited. Of these patients, 30 received total intravenous general anesthesia to serve as the control group, 28 received total intravenous general anesthesia (TIVA) combined with erector spinae plane block (ESPB), and 31 had TIVA combined with retrolaminar block (RLB). All the patients received patient-controlled intravenous analgesia (PCIA) for postoperative analgesia, and their heart rate, blood pressure, and pulse oximetry were routinely monitored during the anesthesia. VAS scores were evaluated before and at 2, 8, 12, 24, and 48 h after the surgery. Sufentanil consumption during the operation and PCIA were also recorded. The postoperative complications such as nausea and vomiting, urinary retention, itching and respiratory depression within 48 h after the surgery were also recorded.
		                        		
		                        			RESULTS:
		                        			At 2, 8 and 12 h postoperatively, VAS scores in the ESPB group and RLB group were significantly lower than those in the control group; the scores were significantly lower in RLB group than in ESPB group ( < 0.05). Compared with that in the control group, sufentanil consumption during the operation and PCIA were significantly decreased in both ESPB and RLB groups, particularly in the latter group ( < 0.05). Two patients experienced nausea and vomiting and 1 patient complained of pruritus in control group; 1 patient had over sedation and 1 had urinary retention in ESPB group; 1 patient had urinary retention in RLB group.
		                        		
		                        			CONCLUSIONS
		                        			Ultrasound-guided RLB has better analgesic effect than ESPB for management of perioperative pain following posterior lumbar surgery.
		                        		
		                        		
		                        		
		                        			Analgesia, Patient-Controlled
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Lumbosacral Region
		                        			;
		                        		
		                        			surgery
		                        			;
		                        		
		                        			Nerve Block
		                        			;
		                        		
		                        			Pain, Postoperative
		                        			;
		                        		
		                        			Sufentanil
		                        			
		                        		
		                        	
9.Dose-response Relationship of Dexmedetomidine Combined with Sufentail for Postoperative Intravenous Analgesia in Video-assisted Thoracoscopic Surgery.
Xiao Lu TAN ; Ya Yu CHEN ; Bo HU ; Qiao Mei ZHOU ; Wei Dong SHAO ; Bo XU ; Hai Ping XIAO ; Xing An ZHANG
Acta Academiae Medicinae Sinicae 2019;41(3):373-378
		                        		
		                        			
		                        			Objective To investigate the 50% effective dose(ED)and 95% effective dose(ED)of dexmedetomidine(DEX)combined with 0.032 μg/(kg·h)sufentanil as well as its analgesic effect for patient-controlled intravenous analgesia(PCIA)after video-assisted thoracoscopic surgery(VATS).Methods Totally 25 patients undergoing elective VATS were enrolled. DEX and 0.032 μg/(kg·h)sufentanil were used for postoperative PCIA. The loading dose of DEX was 0.048 μg/(kg·h),and the dose difference between two adjacent patients was 0.008 μg/(kg·h). The DEX dose of a current patient was determined by whether the previous patient was satisfied with postoperative analgesic effect. If the previous patient was satisfied with postoperative analgesic effect,the DEX dose of the current patient was decreased by 0.008 μg/(kg·h);and if the previous analgestic effect was not satisfactory,DEX dose of the current patient was increased by 0.008 μg/(kg·h). The study endpoint was dexmedetomidine dose was<0.008 μg/(kg· h) within 7 upper and lower cycles in 7 consecutive cases. Finally,the probability unit regression was used to estimate the ED and ED of DEX and their 95% .Results When DEX combined with 0.032 μg/(kg·h) sufentanil was used for postoperative PCIA in young patients undergoing VATS,the ED and EDof DEX were 0.0346 μg/(kg· h)[95%:0.0283-0.0408 μg/(kg·h)] and 0.0459 μg/(kg·h)[95%:0.0400-0.0880 μg/(kg·h)],respectively. No adverse reaction such as vomiting,respiratory depression,or bradycardia occurred. The average Visual Analogue Scale(VAS)scores at rest(=-5.128,=0.000)and cough(Z=-6.642,=0.000)and the Ramsay sedation score(Z=-2.335,=0.020)within 6 hours after surgery were higher than those after 6 hour.Conclusion DEX combined with 0.032 μg/(kg·h) sufentanil are effective for postoperative PCIA in patients undergoing VATS when the ED and ED are 0.0346 μg/(kg·h)and 0.0459 μg/(kg·h),respectively.
		                        		
		                        		
		                        		
		                        			Analgesia, Patient-Controlled
		                        			;
		                        		
		                        			Analgesics, Non-Narcotic
		                        			;
		                        		
		                        			administration & dosage
		                        			;
		                        		
		                        			therapeutic use
		                        			;
		                        		
		                        			Dexmedetomidine
		                        			;
		                        		
		                        			administration & dosage
		                        			;
		                        		
		                        			therapeutic use
		                        			;
		                        		
		                        			Dose-Response Relationship, Drug
		                        			;
		                        		
		                        			Drug Therapy, Combination
		                        			;
		                        		
		                        			Humans
		                        			;
		                        		
		                        			Pain, Postoperative
		                        			;
		                        		
		                        			drug therapy
		                        			;
		                        		
		                        			Sufentanil
		                        			;
		                        		
		                        			administration & dosage
		                        			;
		                        		
		                        			therapeutic use
		                        			;
		                        		
		                        			Thoracic Surgery, Video-Assisted
		                        			
		                        		
		                        	
10.Establishment and Its Application of UPLC-MS/MS Method for 20 Fentanyl-related Substances in Blood.
Yan SHI ; Huo Sheng QIANG ; Wei LIU ; Ping XIANG ; Bao Hua SHEN ; Min SHEN
Journal of Forensic Medicine 2019;35(4):411-418
		                        		
		                        			
		                        			Objective To establish an ultra-high performance liquid chromatography-tandem mass spectrometry (UPLC-MS/MS) rapid determination method for simultaneous analysis of 20 fentanyl-related substances in blood. Methods With fentanyl-D5 as an internal standard, the blood was extracted by liquid-liquid extraction (LLE), then separated with an ACQUITY UPLC HSS T3 chromatographic column, and finally 20 fentanyl-related substances were simultaneously analyzed with multiple reaction monitoring (MRM) mode. Results The limits of detection (LOD) of all compounds were 0.02-0.03 ng/mL, and the limits of quantitation (LOQ) were 0.05-0.2 ng/mL. Within the mass concentration range of 0.05-40 ng/mL, 20 fentanyl-related substances had a good linear relationship, and correlation coefficients were larger than 0.99. The accuracy of the method was 87.69%-114.68% and the extraction recovery rate was 85.35%-101.80%, and no significant matrix effect was observed. The established method was successfully applied to the detection of sufentanil in rat blood after sufentanil was injected. Sufentanil could still be detected in blood of rats 10 h after sufentanil injection. Conclusion The established method has the advantages of simple pretreatment, high sensitivity and good selectivity, and can be used for the determination of fentanyl-related substances in forensic toxicology analysis.
		                        		
		                        		
		                        		
		                        			Animals
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		                        			Chromatography, High Pressure Liquid
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		                        			Fentanyl/blood*
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		                        			Forensic Toxicology
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		                        			Rats
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		                        			Reproducibility of Results
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		                        			Sufentanil/blood*
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		                        			Tandem Mass Spectrometry
		                        			
		                        		
		                        	
            
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