This paper explored the specific mechanism of ginsenoside Rg_1 in regulating mitochondrial fusion through the neurogenic gene Notch homologous protein 1(Notch1) pathway to alleviate hypoxia/reoxygenation(H/R) injury in HL-1 cells. The relative viability of HL-1 cells after six hours of hypoxia and two hours of reoxygenation was detected by cell counting kit-8(CCK-8). The lactate dehydrogenase(LDH) activity in the cell supernatant was detected by the lactate substrate method. The content of adenosine triphosphate(ATP) was detected by the luciferin method. Fluorescence probes were used to detect intracellular reactive oxygen species(Cyto-ROS) levels and mitochondrial membrane potential(ΔΨ_m). Mito-Tracker and Actin were co-imaged to detect the number of mitochondria in cells. Fluorescence quantitative polymerase chain reaction and Western blot were used to detect the mRNA and protein expression levels of Notch1, mitochondrial fusion protein 2(Mfn2), and mitochondrial fusion protein 1(Mfn1). The results showed that compared with that of the control group, the cell activity of the model group decreased, and the LDH released into the cell culture supernatant increased. The level of Cyto-ROS increased, and the content of ATP decreased. Compared with that of the model group, the cell activity of the ginsenoside Rg_1 group increased, and the LDH released into the cell culture supernatant decreased. The level of Cyto-ROS decreased, and the ATP content increased. Ginsenoside Rg_1 elevated ΔΨ_m and increased mitochondrial quantity in HL-1 cells with H/R injury and had good protection for mitochondria. After H/R injury, the mRNA and protein expression levels of Notch1 and Mfn1 decreased, while the mRNA and protein expression levels of Mfn2 increased. Ginsenoside Rg_1 increased the mRNA and protein levels of Notch1 and Mfn1, and decreased the mRNA and protein levels of Mfn2. Silencing Notch1 inhibited the action of ginsenoside Rg_1, decreased the mRNA and protein levels of Notch1 and Mfn1, and increased the mRNA and protein levels of Mfn2. In summary, ginsenoside Rg_1 regulated mitochondrial fusion through the Notch1 pathway to alleviate H/R injury in HL-1 cells.
Ginsenosides/pharmacology* ; Receptor, Notch1/genetics* ; Signal Transduction/drug effects* ; Mice ; Animals ; Mitochondrial Dynamics/drug effects* ; Mitochondria/metabolism* ; Cell Line ; Reactive Oxygen Species/metabolism* ; Oxygen/metabolism* ; Cell Hypoxia/drug effects* ; Cell Survival/drug effects* ; Membrane Potential, Mitochondrial/drug effects* ; Humans

OBJECTIVE: To compare the therapeutic effect of Fu's subcutaneous needling combined with scalp acupuncture and simple scalp acupuncture for shoulder-hand syndrome phase Ⅰ after cerebral infarction. METHODS: A total of 68 patients with shoulder-hand syndrome phase Ⅰ after cerebral infarction were randomized into a combination group (34 cases, 1 case dropped out) and a scalp acupuncture group (34 cases). Internal medicine treatment and conventional rehabilitation training were adopted in both groups. In the scalp acupuncture group, acupuncture was applied at parietal area and anterior parietal area of Yu's scalp acupuncture, electroacupuncture was connected for 30 min, with disperse-dense wave, in frequency of 2 Hz/100 Hz and in electric current of 1 mA, and the needles were retained for 6 h, once a day for continuous 14 days. On the basis of the treatment in the scalp acupuncture group, Fu's subcutaneous needling was applied at the affected muscles during needle retaining in the combination group, once a day in the first 3 days, once every other day in left days, 2-day interval was taken after 4-time treatment, for 14 days totally. Before and after treatment, the scores of the short form of McGill pain questionnaire (SF-MPQ), edema degree, guides to evaluation of permanent impairment (GEPI), and disabilities of the arm, shoulder and hand (DASH) were observed in the two groups, respectively, and the therapeutic effect was evaluated after treatment. RESULTS: After treatment, the scores of pain rating index (PRI), visual analogue scale (VAS) and present pain intensity (PPI), as well as the total scores of SF-MPQ were decreased compared with those before treatment in the two groups (P<0.05), and the above indexes in the combination group were lower than those in the scalp acupuncture group (P<0.05). After treatment, the scores of edema degree and DASH were decreased compared with those before treatment (P<0.05), while the GEPI scores were increased compared with those before treatment (P<0.05) in the two groups; in the combination group, the scores of edema degree and DASH were lower (P<0.05) while the GEPI score was higher (P<0.05) than those in the scalp acupuncture group. The total effective rate was 97.0% (32/33) in the combination group, which was superior to 91.2% (31/34) in the scalp acupuncture group (P<0.05). CONCLUSION Both Fu's subcutaneous needling combined with scalp acupuncture and simple scalp acupuncture can effectively relieve the shoulder joint pain and edema degree of hand, improve the upper limb function in patients with shoulder-hand syndrome phase Ⅰ after cerebral infarction, and the combination therapy has better therapeutic effect than simple scalp acupuncture.
Humans ; Male ; Female ; Acupuncture Therapy/instrumentation* ; Middle Aged ; Cerebral Infarction/therapy* ; Aged ; Treatment Outcome ; Scalp ; Reflex Sympathetic Dystrophy/therapy* ; Acupuncture Points ; Adult

This study aimed to investigate the potential mechanism and the compatibility significance of Tanyu Tongzhi Formula in treating atherosclerosis(AS) in mice based on the transforming growth factor-β(TGF-β)/Smad2/3 signaling pathway. Eight C57BL/6J mice were as assigned to a normal control group and fed a regular diet, while 35 ApoE~(-/-) mice of the same strain were fed a high-fat diet for 8 weeks to establish an AS model. The model mice were randomly divided into a model group, a Tanyu Tongzhi group(18.2 mg·kg~(-1)), a Huatan(phlegm-resolving) group(10.4 mg·kg~(-1)), and a Quyu(blood stasis-resolving) group(7.8 mg·kg~(-1)), with 8 mice in each group. Except for the normal group, all other groups continued to be fed a high-fat diet for 8 weeks to maintain the AS model, and then the mice were treated by gavage for 8 weeks. Plasma levels of total cholesterol(TC), triglycerides(TG), low-density lipoprotein cholesterol(LDL-C), high-density lipoprotein cholesterol(HDL-C), interleukin-1β(IL-1β), and interleukin-18(IL-18) were measured using enzyme-linked immunosorbent assay(ELISA). Hematoxylin and eosin(HE) staining, oil red O staining, and Russell-Movat pentachrome staining were performed to observe the pathological changes in the aortic tissue. The proportions of aortic plaque area, lipid-stained area, collagen fibers, and elastic fibers were calculated. Immunofluorescence was used to detect the protein expression levels of matrix metalloproteinase 2(MMP2) and tissue inhibitor of metalloproteinases 2(TIMP2). Western blot was used to detect the protein expression levels of TGF-β1, TGF-β2, Smad2/3, and Smad7 in aortic tissue. Real-time fluorescence quantitative PCR(RT-qPCR) was used to measure the mRNA expression levels of TGF-β receptor(TGF-βR), TGF-β1, Smad2/3, Smad7, intercellular adhesion molecule-1(ICAM-1), and vascular cell adhesion molecule-1(VCAM-1) in aortic tissue. The results showed that compared with the normal control group, the model group had increased plasma TC and LDL-C, significantly decreased HDL-C, and significantly elevated plasma IL-1β and IL-18 levels. The model group also exhibited an increased proportion of aortic plaque area, lipid-stained area, and collagen fiber area, along with significantly upregulated MMP2 and downregulated TIMP2 expression in the aortic arch. Additionally, the expression levels of TGF-βR, TGF-β1, and p-Smad2/3 proteins and mRNA in the aortic tissue were significantly elevated, while Smad7 expression was decreased. Compared with the model group, the Tanyu Tongzhi group showed significantly reduced plasma TC and LDL-C levels, significantly increased HDL-C levels, and significantly decreased plasma IL-1β and IL-18 levels. The Tanyu Tongzhi group also exhibited a significant reduction in aortic plaque size and severity, a significant downregulation of MMP2 expression in the aortic arch, and significantly decreased ICAM-1 and VCAM-1 mRNA expression levels. Moreover, the Tanyu Tongzhi group demonstrated significantly reduced expression levels of TGF-β1 and p-Smad2/3 proteins and mRNA in the aortic tissue, and an increased expression level of Smad7 protein to varying degrees. Compared with the Tanyu Tongzhi group, the Quyu group had significantly higher LDL-C levels and elevated plasma IL-1β and IL-18 levels. The Huatan group showed upregulated MMP2 expression and downregulated TIMP2 expression in the aortic arch. In conclusion, Tanyu Tongzhi Formula, which is composed based on the pathogenesis of phlegm and blood stasis, maintains vascular homeostasis by primarily regulating lipid metabolism and controlling inflammatory factors through the Huatan group, and maintaining vascular wall permeability, inhibiting plaque development, and stabilizing plaques through the Quyu group. The mechanism of action may involve inhibiting TGF-β1 expression in the aorta, reducing Smad2/3 phosphorylation, and simultaneously increasing Smad7 expression.
Animals ; Atherosclerosis/metabolism* ; Signal Transduction/drug effects* ; Drugs, Chinese Herbal/administration & dosage* ; Mice ; Mice, Inbred C57BL ; Male ; Transforming Growth Factor beta/genetics* ; Humans ; Homeostasis/drug effects* ; Aorta/metabolism* ; Smad2 Protein/genetics* ; Smad3 Protein/genetics*

This article explored the specific mechanism by which ginsenoside Rg_1 regulates cellular autophagy to attenuate hypoxia/reoxygenation(H/R) injury in HL-1 cardiomyocytes through the microRNA155(miR-155)/neurogenic gene Notch homologous protein 1(Notch1)/hairy and enhancer of split 1(Hes1) pathway. An HL-1 cell model with H/R injury was constructed, and ginsenoside Rg_1 and/or Notch1 inhibitor DAPT and miR-155 mimics were used to treat cells. Cell counting kit(CCK)-8 was used to detect the relative viability of HL-1 cells with H/R injury. The lactate dehydrogenase(LDH) content in cell culture medium supernatant was detected by using an LDH assay kit, and autophagosome in cells was observed by transmission electron microscopy. The level of autophagy in cells was detected through the mono-dansyl-cadaverine(MDC) detection method. Fluorescence quantitative polymerase chain reaction was used to detect the mRNA levels of miR-155, Notch1, Hes1, and microtubule-associated protein1 light chain 3(LC3), and Western blot was used to detect the protein expression levels of Notch1, Hes1, LC3Ⅰ, and LC3Ⅱ. The results show that after H/R injury, the activity of HL-1 cells decreases, and LDH leakage increases. Besides, the number of intracellular autophagosomes increases, and the mRNA level of LC3 and the LC3Ⅱ/LC3Ⅰ ratio are elevated. In addition, ginsenoside Rg_1 can increase cell activity, decrease LDH leakage and the number of intracellular autophagosomes, and reduce the mRNA level of LC3 and the LC3Ⅱ/LC3Ⅰ ratio. Therefore, it plays a cardioprotective role by inhibiting autophagy, and Notch1 inhibitor or miR-155 overexpression can inhibit the effect of ginsenoside Rg_1, promote autophagy, and aggravate H/R injury in HL-1 cells. Ginsenoside Rg_1 can inhibit the reduction of Notch1 and Hes1 mRNA levels and protein expressions and the increase in miR-155 mRNA levels caused by H/R injury, while Notch1 inhibitors or miR-155 overexpression show the opposite effect. In summary, ginsenoside Rg_1 can regulate autophagy through the miR-155/Notch1/Hes1 pathway to alleviate H/R injury in HL-1 cardiomyocytes.
Ginsenosides/pharmacology* ; MicroRNAs/metabolism* ; Autophagy/drug effects* ; Receptor, Notch1/genetics* ; Transcription Factor HES-1/genetics* ; Mice ; Animals ; Cell Line ; Signal Transduction/drug effects* ; Myocytes, Cardiac/cytology* ; Cell Hypoxia/drug effects*

In order to strengthen the supervision of the use of drugs in hospitals，the Sichuan Academy of Medical Sciences· Sichuan Provincial People’s Hospital took the lead in compiling the Principles for the Rational Use of National Key Monitoring Drugs （the Second Batch） with a number of experts from multiple medical units in accordance with the Second Batch of National Key Monitoring Rational Drug Use List （hereinafter referred to as “the List”） issued by the National Health Commission. According to the method of the WHO Guidelines Development Manual， the writing team used the Delphi method to unify expert opinions by reading and summarizing the domestic and foreign literature evidence of related drugs， and applied the evaluation， formulation and evaluation method of recommendation grading （GRADE） to evaluate the quality of evidence formed， focusing on more than 30 drugs in the List about the evaluation of off-label indications of drugs， key points of rational drug use and key points of pharmaceutical monitoring. It aims to promote the scientific standardization and effective management of clinical medication， further improve the quality of medical services， reduce the risk of adverse drug reactions and drug abuse， promote rational drug use， and improve public health.

Objective: To analyze the prevalence and the risk factors of fungal sepsis in 25 neonatal intensive care units (NICU) among preterm infants in China, and to provide a basis for preventive strategies of fungal sepsis. Methods: This was a second-analysis of the data from the "reduction of infection in neonatal intensive care units using the evidence-based practice for improving quality" study. The current status of fungal sepsis of the 24 731 preterm infants with the gestational age of <34⁺⁰ weeks, who were admitted to 25 participating NICU within 7 days of birth between May 2015 and April 2018 were retrospectively analyzed. These preterm infants were divided into the fungal sepsis group and the without fungal sepsis group according to whether they developed fungal sepsis to analyze the incidences and the microbiology of fungal sepsis. Chi-square test was used to compare the incidences of fungal sepsis in preterm infants with different gestational ages and birth weights and in different NICU. Multivariate Logistic regression analysis was used to study the outcomes of preterm infants with fungal sepsis, which were further compared with those of preterm infants without fungal sepsis. The 144 preterm infants in the fungal sepsis group were matched with 288 preterm infants in the non-fungal sepsis group by propensity score-matched method. Univariate and multivariate Logistic regression analysis were used to analyze the risk factors of fungal sepsis. Results: In all, 166 (0.7%) of the 24 731 preterm infants developed fungal sepsis, with the gestational age of (29.7±2.0) weeks and the birth weight of (1 300±293) g. The incidence of fungal sepsis increased with decreasing gestational age and birth weight (both P<0.001). The preterm infants with gestational age of <32 weeks accounted for 87.3% (145/166). The incidence of fungal sepsis was 1.0% (117/11 438) in very preterm infants and 2.0% (28/1 401) in extremely preterm infants, and was 1.3% (103/8 060) in very low birth weight infants and 1.7% (21/1 211) in extremely low birth weight infants, respectively. There was no fungal sepsis in 3 NICU, and the incidences in the other 22 NICU ranged from 0.7% (10/1 397) to 2.9% (21/724), with significant statistical difference (P<0.001). The pathogens were mainly Candida (150/166, 90.4%), including 59 cases of Candida albicans and 91 cases of non-Candida albicans, of which Candida parapsilosis was the most common (41 cases). Fungal sepsis was independently associated with increased risk of moderate to severe bronchopulmonary dysplasia (BPD) (adjusted OR 1.52, 95%CI 1.04-2.22, P=0.030) and severe retinopathy of prematurity (ROP) (adjusted OR 2.55, 95%CI 1.12-5.80, P=0.025). Previous broad spectrum antibiotics exposure (adjusted OR=2.50, 95%CI 1.50-4.17, P<0.001), prolonged use of central line (adjusted OR=1.05, 95%CI 1.03-1.08, P<0.001) and previous total parenteral nutrition (TPN) duration (adjusted OR=1.04, 95%CI 1.02-1.06, P<0.001) were all independently associated with increasing risk of fungal sepsis. Conclusions: Candida albicans and Candida parapsilosis are the main pathogens of fungal sepsis among preterm infants in Chinese NICU. Preterm infants with fungal sepsis are at increased risk of moderate to severe BPD and severe ROP. Previous broad spectrum antibiotics exposure, prolonged use of central line and prolonged duration of TPN will increase the risk of fungal sepsis. Ongoing initiatives are needed to reduce fungal sepsis based on these risk factors.
Infant ; Infant, Newborn ; Humans ; Birth Weight ; Intensive Care Units, Neonatal ; Retrospective Studies ; Tertiary Care Centers ; Infant, Extremely Low Birth Weight ; Gestational Age ; Infant, Extremely Premature ; Sepsis/epidemiology* ; Retinopathy of Prematurity/epidemiology* ; Bronchopulmonary Dysplasia/epidemiology*

Aim To study the electrophysiological mechanism of dopamine inhibiting insulin secretion hv voltage-dependent potassium ( Kv) channels.Methods Islets and (3 cells were isolated from male SD rats.D,-like receptor agonist ( SKP38393), D2-like receptor agonist (Quinpirole) and antagonist (Epiclopride) were used according to the experiment.Insulin secretion was detected by insulin radioimmunoassay.Whole-cell j J patch-clamp technique was applied to detect Kv channel currents and action potential duration of p cells.Di- BAC4(3) staining was used to observe membrane potential.Results SKF38393 did not affect insulin secretion and the Kv channel currents.Quinpirole signifi cantly inhibited insulin secretion and increased Kv channel currents.Dopamine significantly inhibited insulin secretion, increased Kv channel currents and shortened action potential duration of p cells, which could be reversed by epiclopride.In addition, dopamine de-creased membrane potential of INS-1 cells.Conclusions Dopamine inhibits insulin secretion by acting on D2-like receptors, resulting in actived Kv channels, shortened action potential duration and decreased cell membrane potential.

Objective:To compare percutaneous cannulated screw (PCS) fixation and plating via a minimally invasive longitudinal approach (MILA) after closed reduction for the treatment of intra-articular tongue-type calcaneal fractures.Methods:A retrospective analysis was conducted of the 67 patients with intra-articular tongue-type calcaneal fracture who had been treated at Department of Orthopedics, The Third Hospital of Peking University from May 2017 to May 2020. They were 56 males and 11 females, 19 to 58 years of age (average, 34.5 years). Of them, 32 were treated by the PCS fixation after closed reduction (PCS group) and 35 by the MILA plating after closed reduction (MILA group). The operation time, preoperative time, post-operative hospital stay, blood loss and postoperative complications were recorded and compared between the 2 groups. The calcaneal length, width and height, Gissane angle, B?hler angle, varus angle, valgus angle and visual analog scale (VAS) were compared between the 2 groups at preoperation, immediate postoperation, 3 months postoperation, and the last follow-up. The American Orthopaedic Foot and Ankle Society (AOFAS) hindfoot score was used at 3 months postoperation and the last follow-up to evaluate the function of the injured hindfoot.Results:There was no significant difference in the preoperative general data between the PCS group and the MILA group, showing they were comparable ( P>0.05). All patients were followed up for an average of 18.5 months (from 15 to 25 months). For the PCS group and the MILA group, respectively, the operation time was 60.5 (51.5, 68.0) min and 86.0 (78.0, 96.0) min, the blood loss 10 (5.0, 20.0) mL and 20 (15, 25) mL, the postoperative hospital stay 1 (1.0, 1.8) d and 2 (2, 3) d, the calcaneal width at immediate postoperation (43.8±4.4) mm and (40.6±2.8) mm, the calcaneal width at 3 months postoperation 43.8 (39.6, 48.3) mm and 41.5 (38.8, 44.5) mm, the calcaneal width at the last follow-up 44.2 (40.2, 48.0) mm and 41.3 (39.0, 44.3) mm, the VAS at the last follow-up 5.0 (5.0, 5.0) and 6.0 (5.0, 6.0). The comparisons of the above items showed significant differences between the 2 groups (all P<0.05). No significant differences were observed between the 2 groups in the calcaneal length or height, Gissane or B?hler angle, AOFAS hindfoot score, or complication rate (all P>0.05). Conclusions:In the treatment of tongue-type calcaneal fractures, after closed reduction, the PCS fixation can shorten operation time and postoperative hospital stay, and reduce intraoperative blood loss and postoperative pain, but the MILA plating is more advantageous in restoring the calcaneal width.

Objective: To evaluate the effect of Li's catheter in cardiac resynchronization therapy (CRT) implantation. Methods: This study was a retrospective cohort study. Patients with indications for CRT implantation who visited the Department of Cardiology, Peking University People's Hospital from January 1, 2016 to January 1, 2022 were enrolled. Patients were divided into Li's catheter group (CRT implantation with Li's catheter) and control group (CRT implantation with the traditional method). The general clinical data of the patients were obtained through the electronic medical record system. Li's catheter is a new type of coronary sinus angiography balloon catheter independently developed by Dr. Li Xuebin (patent number: 201320413174.1). The primary outcome was the success rate of CRT device implantation, and the secondary outcomes included efficacy and safety parameters. Efficacy indicators included operation time, coronary sinus angiography time, left ventricular lead implantation time, X-ray exposure time, left ventricular lead threshold, and diaphragm stimulation. Safety outcomes included incidence of coronary sinus dissection, cardiac tamponade, and pericardial effusion. Results: A total of 170 patients were enrolled in this study, including 90 in Li's catheter group and 80 in control group. Age, male proportion of patients, proportion of patients with ischemic cardiomyopathy, hypertension, diabetes mellitus, chronic renal insufficiency, New York Heart Association (NYHA) functional classification, left ventricular ejection fraction, left ventricular end-diastolic diameter, proportion of left bundle branch block, and preoperative QRS wave width were similar between the two groups (all P>0.05). In Li's catheter group, 34 cases (37.8%) implanted with CRT defibrillators, and 28 cases (35.0%) implanted with CRT defibrillators in control group, the difference was not statistically significant (P=0.710). The success rate of CRT device implantation in Li's catheter group was 100% (90/90), which was significantly higher than that in control group (93.8%, 75/80, P=0.023).The operation time was 57.0 (52.0, 62.3) minutes, the time to complete coronary sinus angiography was 8.0 (6.0, 9.0) minutes, and the time of left ventricular electrode implantation was 8.0 (7.0, 9.0) minutes in Li's catheter group, and was 91.3 (86.3, 97.0), 18.0 (16.0, 20.0), 25.0 (22.0, 27.7) minutes respectively in control group, all significantly shorter in Li's catheter group (all P<0.05). The exposure time of X-ray was 15.0 (14.0, 17.0) minutes in Li's catheter group, which was also significantly shorter than that in control group (32.5 (29.0, 36.0) minutes, P<0.001). There was no coronary sinus dissection and cardiac tamponade in Li's catheter group, and 1 patient (1.1%) had diaphragmatic stimulation in Li's catheter group. In control group, 6 patients (6.7%) had coronary sinus dissection, and 1 patient (1.1%) developed pericardial effusion, and 3 patients (3.3%) had diaphragmatic stimulation. The incidence of coronary sinus dissection in Li's catheter group was significantly lower than that in control group (P=0.011). The postoperative left ventricular thresholds in Li's catheter group and control group were similar (1.80 (1.60, 2.38) V/0.5 ms vs. 1.80 (1.60, 2.40) V/0.5 ms, P=0.120). Conclusions: Use of Li's catheter is associated with higher success rate of CRT implantation, short time of coronary sinus angiography and left ventricular electrode implantation, reduction of intraoperative X-ray exposure, and lower incidence of coronary vein dissection in this patient cohort.
Cardiac Resynchronization Therapy/methods* ; Cardiac Tamponade/therapy* ; Catheters ; Heart Failure/therapy* ; Humans ; Male ; Pericardial Effusion ; Retrospective Studies ; Stroke Volume ; Treatment Outcome ; Ventricular Function, Left

Objective: For patients with paroxysmal atrial fibrillation, superior vena cava isolation on the basis of pulmonary vein isolation may further improve the long-term success rate of radiofrequency ablation. We aimed to explore the efficacy and safety of superior vena cava isolation by high-power and short-duration (HPSD) ablation plus conventional radiofrequency ablation (RA) in patients with paroxysmal atrial fibrillation. Methods: It was a prospective randomized controlled study. From January 1, 2019 to June 1, 2020, 180 patients who underwent radiofrequency ablation for paroxysmal atrial fibrillation in our center were consecutively screened. Patients were eligible if there was a trigger potential and the muscle sleeve length was greater than 3 cm. A total of 60 eligible patients were finally included and randomly divided into HPSD group (HPSD plus RA) and common power and duration (CPD) group (CPD plus RA) by random number table method (n=30 in each group). Efficacy was evaluated by ablation points, isolation time and ablation time. Safety was evaluated by the incidence of POP, cardiac tamponade, phrenic nerve injury, sinoatrial node injury and all-cause. Results: Superior vena cava isolation was achieved by 14 (13, 15) points in the HPSD group, which was significantly less than that in the CPD group (20(18, 22), P<0.001). The superior vena cava isolation time was 8 (7, 9) minutes in the HPSD group, which was significantly shorter than in the CPD group (17(14, 20) minutes, P<0.001). The average ablation time significantly shorter in HPSD group than in CPD group (78.0(71.1, 80.0) s vs. 200(167.5, 212.5)s, P<0.001). The average impedance drop was more significant in the HPSD group than in the CPD group (20.00(18.75, 21.00)Ω (and the percentage of impedance drop was 15%) vs. 12.00(11.75, 13.25)Ω (the percentage of impedance decrease was 12%), P<0.001). There was 1 POP (3.3%) in the HPSD group, and 3 POPs (10.0%) in the CPD group (P>0.05). There was no cardiac tamponade, phrenic nerve injury, sinoatrial node injury and death in both groups. Conclusions: HPSD technique for the isolation of superior vena cava is safe and effective in patients with paroxysmal atrial fibrillation undergoing conventional radiofrequency ablation.
Humans ; Atrial Fibrillation/surgery* ; Vena Cava, Superior/surgery* ; Prospective Studies ; Treatment Outcome ; Radiofrequency Ablation