1.Randomized controlled trial of enhanced cognitive behavioral therapy for chronic insomnia with comorbid anxiety/depression
Xin LUO ; Jingru LI ; Jingfang LU ; Fangmei GE ; Jie ZHANG ; Jing ZHANG ; Wanqi SUN ; Wenqing ZHAO ; Binbin SHI ; Chengmei YUAN
Chinese Journal of Psychiatry 2025;58(3):202-210
Objective:To compare the effects of standard cognitive behavioral therapy for insomnia (CBT-I) and enhanced cognitive behavioral therapy for insomnia(CBT-I Plus) in patients with chronic insomnia disorder comorbid anxiety or depressive symptoms.Methods:This prospective study included 148 patients with chronic insomnia disorder and anxiety/depression symptoms who were treated at the Sleep Disorder clinic of Shanghai Mental Health Center between July 2020 and August 2023. Participants (56 males, 92 females; aged 18-65 years, mean age 35.08±10.30 years) were randomly assigned in a 1∶2 ratio to the CBT-I group ( n=54) or CBT-I Plus group ( n=94). The CBT-I Plus group received additional treatments targeting anxiety and depressive symptoms. Treatment lasted 8 weeks, with assessment conducted at baseline, weeks 2, 4, and 8. Depression severity was measured using the 17-item Hamilton Depression Rating Scale (HAMD 17), anxiety severity with the Hamilton Anxiety Scale (HAMA), and sleep quality with the Pittsburgh Sleep Quality Index (PSQI). Paired sample t-tests were used to evaluate within-group changes, repeated-measures ANOVA compared treatment effects between groups, and ANCOVA was employed to adjust for confounding variables. Results:Significant reductions in PSQI, HAMD 17, and HAMA scores were observed in both groups after treatment: CBT-I group: PSQI ((14.15±2.54) vs. (7.50±3.35), t=13.25), HAMD 17 ((14.70±4.09) vs. (7.40±4.61), t=9.33), and HAMA ((14.94±4.11) vs. (5.56±3.67), t=12.38) (all P<0.001).CBT-I Plus group: PSQI ((14.87±3.01) vs. (7.19±3.86), t=18.75), HAMD 17 ((16.84±3.91) vs. (6.84±4.79), t=17.42), and HAMA ((15.57±3.93) vs. (6.10±4.57), t=18.39) (all P<0.001). After adjusting for HAMD 17 scores and medication use, no statistically significant between-group differences were observed in changes in PSQI, HAMD 17, and HAMA scores ( P>0.05). A significant time-by-group interaction was found for the PSQI daytime dysfunction subscale ( F=4.87, P<0.01). Conclusion:Both CBT-I and CBT-I Plus improve sleep and emotional symptoms in patients with chronic insomnia disorder and comorbid anxiety/depression symptoms. However, CBT-I Plus has no significant advantages over standard CBT-I. Further studies are needed to refine the timing and content of interventions.
2.Randomized controlled trial of enhanced cognitive behavioral therapy for chronic insomnia with comorbid anxiety/depression
Xin LUO ; Jingru LI ; Jingfang LU ; Fangmei GE ; Jie ZHANG ; Jing ZHANG ; Wanqi SUN ; Wenqing ZHAO ; Binbin SHI ; Chengmei YUAN
Chinese Journal of Psychiatry 2025;58(3):202-210
Objective:To compare the effects of standard cognitive behavioral therapy for insomnia (CBT-I) and enhanced cognitive behavioral therapy for insomnia(CBT-I Plus) in patients with chronic insomnia disorder comorbid anxiety or depressive symptoms.Methods:This prospective study included 148 patients with chronic insomnia disorder and anxiety/depression symptoms who were treated at the Sleep Disorder clinic of Shanghai Mental Health Center between July 2020 and August 2023. Participants (56 males, 92 females; aged 18-65 years, mean age 35.08±10.30 years) were randomly assigned in a 1∶2 ratio to the CBT-I group ( n=54) or CBT-I Plus group ( n=94). The CBT-I Plus group received additional treatments targeting anxiety and depressive symptoms. Treatment lasted 8 weeks, with assessment conducted at baseline, weeks 2, 4, and 8. Depression severity was measured using the 17-item Hamilton Depression Rating Scale (HAMD 17), anxiety severity with the Hamilton Anxiety Scale (HAMA), and sleep quality with the Pittsburgh Sleep Quality Index (PSQI). Paired sample t-tests were used to evaluate within-group changes, repeated-measures ANOVA compared treatment effects between groups, and ANCOVA was employed to adjust for confounding variables. Results:Significant reductions in PSQI, HAMD 17, and HAMA scores were observed in both groups after treatment: CBT-I group: PSQI ((14.15±2.54) vs. (7.50±3.35), t=13.25), HAMD 17 ((14.70±4.09) vs. (7.40±4.61), t=9.33), and HAMA ((14.94±4.11) vs. (5.56±3.67), t=12.38) (all P<0.001).CBT-I Plus group: PSQI ((14.87±3.01) vs. (7.19±3.86), t=18.75), HAMD 17 ((16.84±3.91) vs. (6.84±4.79), t=17.42), and HAMA ((15.57±3.93) vs. (6.10±4.57), t=18.39) (all P<0.001). After adjusting for HAMD 17 scores and medication use, no statistically significant between-group differences were observed in changes in PSQI, HAMD 17, and HAMA scores ( P>0.05). A significant time-by-group interaction was found for the PSQI daytime dysfunction subscale ( F=4.87, P<0.01). Conclusion:Both CBT-I and CBT-I Plus improve sleep and emotional symptoms in patients with chronic insomnia disorder and comorbid anxiety/depression symptoms. However, CBT-I Plus has no significant advantages over standard CBT-I. Further studies are needed to refine the timing and content of interventions.
3.Epidemiological study on hookworm infection in rural population in Tiantai County, Zhejiang Province in 2022
Junhua GE ; Jiang CHU ; Guiwei ZHU ; Binbin DING ; Caixia PANG ; Saifei LUO ; Tianlan PANG ; Wei RUAN
Shanghai Journal of Preventive Medicine 2024;36(4):364-367
ObjectiveTo understand the prevalence of hookworm infection and its relevant behavioral factors in rural areas of Tiantai County, Zhejiang Province, and to provide scientific evidence for prevention and control of hookworm disease. MethodsBy using a stratified cluster random sampling strategy, local residents aged ≥3 years was divided into 5 districts according to geographical location; furthermore, those in one administrative village (surveillance site) were investigated in each district. Species of hookworm were identified by filter paper culture in vitro, and enterobius vermicularis eggs were detected by cellophane anal swab in children aged 3‒9 year. Risk factors were determined by questionnaire. ResultsA total of 1 013 residents were investigated in 5 surveillance sites. Thirty nine cases with hookworm infection were detected, with the total infection rate of 3.85% . All species detected were determined to be Necator americanus. The infection rate significantly differed across the towns (χ2=48.32, P<0.05), with the highest rate in Nanping Town (10.95%) . It significantly differed by age groups (χ2=65.65, P<0.05), with the highest rate in those aged >70 years (9.75%). Furthermore, it decreased with educational background. It was significantly associated with fertilize with fresh manure (χ2=6.87, P<0.05) and barefoot labor (χ2=157.69, P<0.05). ConclusionThe overall infection rate of hookworm in Tiantai County remains low. Dominant species of hookworm is hookworm Necator americanus. It is necessary to strengthen the advocacy of hookworm prevention and control knowledge, improve hygiene in work and life style, and increase self-protection awareness.
4.Cardiac dosimetry analysis and quality of life evaluation of internal breast lymph node irradiation in postoperative left breast cancer
Qiwei ZHU ; Juanjuan CUI ; Zihan ZHANG ; Yanguang YANG ; Binbin GE ; Yu LIU ; Kaiyue CHU
Journal of International Oncology 2023;50(1):17-21
Objective:To analyze the cardiac dosimetry of lymph node irradiation in the internal breast region after left-sided breast cancer surgery and to assess its impact on patients' quality of life.Methods:The clinical data of 108 patients who underwent inverse intensity modulated radiotherapy (IMRT) after left-sided breast cancer surgery in Cancer Hospital of Nantong University from May 2019 to May 2021 were collected and retrospectively analyzed, and divided into a study group (with internal breast, 55 cases) and a control group (without internal breast, 53 cases) according to whether the postoperative radiotherapy included lymph node irradiation in the internal breast region. The dosimetric indexes of planned target area (PTV) , cardiac tolerance, serum myocardial injury markers and quality of life before and after radiotherapy were compared between the two groups.Results:In terms of PTV dosimetry, the conformality index (CI) of the study group and the control group were 0.73±0.07 and 0.75±0.08, the homogeneity index (HI) were 0.17±0.03 and 0.17±0.02, the D max were (55.69±1.02) Gy and (55.46±1.13) Gy, the D mean were (50.54±0.23) Gy and (50.48±0.21) Gy respectively, there were no statistically significant differences ( t=1.38, P=0.169; t<0.01, P>0.999; t=1.11, P=0.269; t=1.41, P=0.160) . In terms of cardiac receptivity, the D mean of the two groups were (5.93 ± 0.32) Gy, (5.64 ± 0.30) Gy, V 40 were (0.47 ± 0.10) %, (0.41 ± 0.11) %, and V 30 were (2.48 ± 0.51) %, (2.06 ± 0.49) % respectively, and there were statistically significant differences ( t=4.86, P<0.001; t=2.97, P=0.004; t=4.36, P<0.001) . The levels of serum troponin Ⅰ (cTnⅠ) before radiotherapy in the study group and the control group were (0.09±0.02) ng/ml and (0.09±0.01) ng/ml, creatine kinase isoenzyme MB (CK-MB) were (0.27±0.08) U/L and (0.25±0.08) U/L, myoglobin (MYo) were (3.84±1.02) μg/L and (3.69±0.97) μg/L, and brain natriuretic peptide (BNP) were (172.35±16.24) pg/ml and (169.81±15.93) pg/ml respectively, there were no statistically significant differences ( t<0.01, P>0.999; t=1.30, P=0.197; t=0.78, P=0.436; t=0.82, P=0.414) . One month after radiotherapy, the levels of serum cTnⅠ in the two groups were (0.09±0.03) ng/ml and (0.09±0.02) ng/ml, CK-MB were (0.29±0.09) U/L and (0.28±0.08) U/L, MYo were (4.06±1.08) μg/L and (4.01±1.03) μg/L, and BNP were (175.13±17.09) pg/ml, (172.47±16.28) pg/ml respectively, there were no statistically significant differences ( t<0.01, P>0.999; t=0.61, P=0.544; t=0.25, P=0.806; t=0.83, P=0.410) . The European Organization for Research and Treatment of Cancer Quality of Life Questionnaire Core 30 (EORTC QLQ-C30) scores before radiotherapy in the study and the control groups were (60.24±5.13) points and (61.19±5.46) points, (74.12±7.20) points and (75.35±7.88) points at 1 month after radiotherapy, (77.53±7.14) points and (78.95±7.08) points at 6 months after radiotherapy, and (75.02±6.93) points and (76.68±6.74) points at 1 year after radiotherapy respectively, there were no statistically significant differences ( t=0.93, P=0.353; t=0.85, P=0.399; t=1.04, P=0.302; t=1.26, P=0.210) . The EORTC QLQ-C30 scores at 1 month, 6 months, and 1 year after radiotherapy were higher than those before radiotherapy in the two groups, and there were statistically significant differences (all P<0.001) . Conclusion:IMRT containing lymph node irradiation in the internal breast region after left breast cancer surgery brings a certain degree of increased cardiac dose, but it is feasible to control it within a certain range and does not affect the patients' cardiac function or quality of life in the short term.
5.Subclassification and clinical treatment options of refractory atlantoaxial dislocation
Xiangyang MA ; Jincheng YANG ; Xiaobao ZOU ; Binbin WANG ; Haozhi YANG ; Su GE ; Yuyue CHEN ; Hong XIA
Chinese Journal of Orthopaedics 2023;43(7):411-421
Objective:To subdivide clinical classification of refractory atlantoaxial dislocation, and evaluate the reliability of new subdivide clinical classification of refractory atlantoaxial dislocation.Methods:From January 2010 to December 2018, 48 patients with refractory atlantoaxial dislocation were treated, including 19 males and 29 females, aged 16 to 65 years, with an average of 39.2±13.3 years. According to the changes of relative anatomical position of C 1 and C 2 under general anesthesia with heavy traction of 1/6 body weight, subdivide clinical classification of refractory atlantoaxial dislocation were proposed, and refractory atlantoaxial dislocation was divided into traction loosening type (atlantoaxial angle≥5°) and traction stabilization type (atlantoaxial angle<5°). The traction loosening type was directly reduced by posterior atlantoaxial screw-rod fixation and fusion without anterior or posterior soft tissue release. For traction stabilization type, transoral soft tissue release was performed first, and then transoral anterior reduction plate fixation and fusion or posterior atlantoaxial screw-rod fixation and fusion were performed. Atlantodental interval (ADI) and atlantoaxial angle (AAA) were measured and collected before and after surgery to evaluate atlantoaxial reduction. The space available for the spinal cord (SAC) were measured to evaluate spinal cord compression. Visual analogue score (VAS) was used to evaluate the neck pain levels, and Japanese Orthopaedic Association (JOA) scores was used to evaluate the neurological function. American Spinal Cord Injury Association impairment scale (AIS) was used to evaluate the degree of spinal cord injury. One week, 3, 6, 12 months postoperatively and the annual review of the X-ray and CT scan were checked, in order to evaluate the reduction, internal fixation and bone graft fusion. Results:Among all 48 cases, 22 cases were traction loosening type, of which posterior atlantoaxial screw-rod fixation and fusion were performed in 16 cases and occipitocervical fixation and fusion in 6 cases. 26 cases were traction stabilization type, and they all underwent anterior transoral release, and then, anterior TARP fixation and fusion were performed in 24 cases and posterior screw-rod fixation and fusion in the other 2 cases. X-ray, CT and MRI images and of all patients 1 week after surgery showed good atlantoaxial reduction and decompression of spinal cord. In each of the two types, there was one case lost to follow-up. For 46 cases in follow-up, the follow-up time ranged from 6 to 72 months, with an average of 38.0±17.2 months. Among 46 cases, 21 cases of traction loosening type showed that, ADI reduced from preoperative 9.9±2.2 mm to 2.3±0.9 mm at 3 months after surgery and 2.3±1.0 mm at the last follow-up, AAA increased from preoperative 57.9°±12.3° to 91.0°±2.2° at 3 months after surgery and 90.9°±2.2° at the last follow-up, SAC increased from preoperative 9.8±1.3 mm to 15.1±0.7 mm at 3 months after surgery and 14.9±0.7 mm at the last follow-up, VAS score reduced from preoperative 1.5±2.1 to 0.7±1.0 at 3 months after surgery and 0.3±0.6 at the last follow-up, and JOA score increased from preoperative 10.2±1.7 to 13.3±1.3 at 3 months after surgery and 14.9±1.5 at the last follow-up. Twenty-five cases of traction stabilization type presented that, ADI reduced from preoperative 9.7±2.0 mm to 2.1±1.4 mm at 3 months after surgery and 2.1±1.3 mm at the last follow-up, AAA increased from preoperative 55.8°±9.2° to 90.9°±1.4° at 3 months after surgery and 90.9°±1.3° at the last follow-up, SAC increased from preoperative 10.5±1.0 mm to 15.4±0.5 mm at 3 months after surgery and 14.8±2.8 mm at the last follow-up, VAS score reduced from preoperative 1.7±2.1 to 0.7±0.9 at 3 months after surgery and 0.3±0.5 at the last follow-up, and JOA score increased from preoperative 10.1±1.3 to 12.9±1.5 at 3 months after surgery and 14.4±1.3 at the last follow-up. In the traction loosening type, all the 10 grade D patients were improved to grade E at the last follow-up. In the 2 grade C patients of traction stabilization type before surgery, 1 patient was improved to grade E, 1 patient was improved to grade D, and all 11 patients with grade D were improved to grade E at the last follow-up. Bony fusion was obtained in all patients from 3 to 6 months, with an average of 4.4±1.5 months. During follow-up period, no looseness of internal fixation or redislocation happened.Conclusion:Refractory atlantoaxial dislocation can be divided into traction loosening type and traction stabilization type. For traction loosening type, satisfactory reduction can be achieved by using posterior atlantoaxial screw-rod system without soft tissue release. For traction stabilization type, anterior release is preferable, and then anterior TARP or posterior screw-rod can be used to achieve satisfactory reduction.
6.Genome-wide identification of the banana GLR gene family and its expression analysis in response to low temperature and abscisic acid/methyl jasmonate.
Binbin LUO ; Hui ZHANG ; Dan LI ; Qiuzhen WU ; Wanjun GE ; Tianyuan ZHU ; Yukun CHEN ; Yuji HUANG ; Yuling LIN ; Zhongxiong LAI
Chinese Journal of Biotechnology 2023;39(7):2874-2896
Glutamate receptor-like (GLR) is an important class of Ca2+ channel proteins, playing important roles in plant growth and development as well as in response to biotic and abiotic stresses. In this paper, we performed genome-wide identification of banana GLR gene family based on banana genomic data. Moreover, we analyzed the basic physicochemical properties, gene structure, conserved motifs, promoter cis-acting elements, evolutionary relationships, and used real-time fluorescence quantitative polymerase chain reaction (RT-qPCR) to verify the expression patterns of some GLR family members under low temperature of 4 ℃ and different hormone treatments. The results showed that there were 19 MaGLR family members in Musa acuminata, 16 MbGLR family members in Musa balbisiana and 14 MiGLR family members in Musa itinerans. Most of the members were stable proteins and had signal peptides, all of them had 3-6 transmembrane structures. Prediction of subcellular localization indicated that all of them were localized on the plasma membrane and irregularly distributed on the chromosome. Phylogenetic analysis revealed that banana GLRs could be divided into 3 subclades. The results of promoter cis-acting elements and transcription factor binding site prediction showed that there were multiple hormone- and stress-related response elements and 18 TFBS in banana GLR. RT-qPCR analysis showed that MaGLR1.1 and MaGLR3.5 responded positively to low temperature stress and were significantly expressed in abscisic acid/methyl jasmonate treatments. In conclusion, the results of this study suggest that GLR, a highly conserved family of ion channels, may play an important role in the growth and development process and stress resistance of banana.
Musa/metabolism*
;
Phylogeny
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Abscisic Acid/metabolism*
;
Temperature
;
Stress, Physiological/genetics*
;
Hormones/metabolism*
;
Gene Expression Regulation, Plant
;
Plant Proteins/metabolism*
;
Gene Expression Profiling
7.Treatment bilateral factors of cognitive behavior therapy for insomnia from the perspective of patients
Jingfang LU ; Jingru LI ; Fangmei GE ; Jie ZHANG ; Jing ZHANG ; Wanqi SUN ; Wenqing ZHAO ; Binbin SHI ; Xin LUO ; Chengmei YUAN
Chinese Journal of Psychiatry 2023;56(6):445-452
Objective:The current study aims to explore the factors related to the efficacy of cognitive behavior therapy for insomnia (CBT-I) from the perspective of patients and to provide references for more effective implementation of CBT-I.Methods:Using qualitative research methods, 21 insomnia patients with depression/anxiety were treated with CBT-I for 8 consecutive times. Pittsburgh Sleep Quality Index (PSQI), Hamilton Depression Scale (HAMD 17), and Hamilton Anxiety Scale (HAMA) were assessed at baseline and the end of the 8th week of treatment. The paired sample t-test was conducted. Semi-structured interviews were performed at week 2, week 4, and week 8 respectively and thematic analysis was used to code and analyze the interview data. Results:Compared with baseline data, the symptoms of insomnia (13.6±2.0 vs. 6.9±2.4), depression (14.6±5.5 vs. 5.0±3.6), and anxiety (17.2±3.4 vs. 5.3±3.9) were significantly improved after 8 weeks of CBT-I treatment ( t=-3.31, -3.19, -2.94, all P<0.01). The patient factors influencing the efficacy of CBT-I were treatment expectation and approval, motivation, compliance, and internalization of treatment content. The therapist factors were professionalism, well-directed, treatment style, supervision, and giving hope. Conclusion:Compliance and high levels of participation of the patients can benefit the treatment efficacy of CBT-I. Therapists should have sufficient experience, stimulate patients′ motivation, improve patients′ compliance, and carry out adequate psychological education in the early stage to increase the efficacy of CBT-I.
8.Treatment bilateral factors of cognitive behavior therapy for insomnia from the perspective of patients
Jingfang LU ; Jingru LI ; Fangmei GE ; Jie ZHANG ; Jing ZHANG ; Wanqi SUN ; Wenqing ZHAO ; Binbin SHI ; Xin LUO ; Chengmei YUAN
Chinese Journal of Psychiatry 2023;56(6):445-452
Objective:The current study aims to explore the factors related to the efficacy of cognitive behavior therapy for insomnia (CBT-I) from the perspective of patients and to provide references for more effective implementation of CBT-I.Methods:Using qualitative research methods, 21 insomnia patients with depression/anxiety were treated with CBT-I for 8 consecutive times. Pittsburgh Sleep Quality Index (PSQI), Hamilton Depression Scale (HAMD 17), and Hamilton Anxiety Scale (HAMA) were assessed at baseline and the end of the 8th week of treatment. The paired sample t-test was conducted. Semi-structured interviews were performed at week 2, week 4, and week 8 respectively and thematic analysis was used to code and analyze the interview data. Results:Compared with baseline data, the symptoms of insomnia (13.6±2.0 vs. 6.9±2.4), depression (14.6±5.5 vs. 5.0±3.6), and anxiety (17.2±3.4 vs. 5.3±3.9) were significantly improved after 8 weeks of CBT-I treatment ( t=-3.31, -3.19, -2.94, all P<0.01). The patient factors influencing the efficacy of CBT-I were treatment expectation and approval, motivation, compliance, and internalization of treatment content. The therapist factors were professionalism, well-directed, treatment style, supervision, and giving hope. Conclusion:Compliance and high levels of participation of the patients can benefit the treatment efficacy of CBT-I. Therapists should have sufficient experience, stimulate patients′ motivation, improve patients′ compliance, and carry out adequate psychological education in the early stage to increase the efficacy of CBT-I.
9.Characteristics of atelectasis and its relationship with degree of diaphragm inhibition in elderly patients with artificial pneumoperitoneum under general anesthesia
Binbin LIU ; Xiaohui WEN ; Xiaofang TANG ; Lan LIN ; Xiangji LIAN ; Ge YU
Chinese Journal of Anesthesiology 2021;41(6):670-673
Objective:To investigate the characteristics of atelectasis and its relationship with the degree of diaphragm inhibition in elderly patients with artificial pneumoperitoneum under general anesthesia.Methods:Patients of both sexes, aged 20-80 yr, of American society of Anesthesiologists physical status Ⅰor Ⅱ, with body mass index of 20-29 kg/m 2, scheduled for elective laparoscopic cholecystectomy under general anesthesia, were divided into 2 groups ( n=20 each) according to age: young and middle-aged group and elderly group.Total intravenous anesthesia was applied and intraoperative pressure of artificial pneumoperitoneum was set at 10 mmHg.Before anesthesia, at 5 min of mechanical ventilation, at 5 min of artificial pneumoperitoneum, at 20 min of artificial pneumoperitoneum, at 5 min after the end of artificial pneumoperitoneum and at 15 min after extubation, diaphragmatic excursion (DE) was measured at the right diaphragm point using M-mode ultrasound.The minimal DE was recorded and the maximum degree of diaphragm inhibition was calculated.B-mode was used to assess the lung ultrasound images at the upper bedside lung ultrasound in emergency (BLUE) point, the lower BLUE point and the diaphragm point, and the cumulative scores before anesthesia and perioperative maximum cumulative scores of lung ultrasound score (LUS) were recorded. Results:Compared with the young and middle-aged group, the maximum cumulative scores of LUS were significantly increased, the degree of DE before anesthesia, the perioperative maximum degree of diaphragm inhibition were increased ( P<0.05), and no significant change was found in LUS cumulative scores in elderly group ( P>0.05). Conclusion:The degree of atelectasis is more serious in the elderly patients with artificial pneumoperitoneum under general anesthesia, and the mechamism may be related to the increased degree of diaphragm inhibition.
10.Study on the application of oral magnesium sulfate solution in split doses as bowel preparation for colonoscopy in elderly patients
Fulin GE ; Binbin SU ; Tingting LI ; Lili SHI ; Yue LYU ; Jun WAN
Chinese Journal of Internal Medicine 2019;58(3):181-184
Objective To evaluate the efficacy and safety of oral magnesium sulfate solution in split doses as bowel preparation in elderly patients undergoing colonoscopy.Methods A total of 368 elderly patients undergoing colonoscopy were enrolled at PLA General Hospital.The patients were randomly divided into magnesium sulfate solution orally in split doses group (group A,n=178) and single dose group (group B,n=190).Parameters including general information,defecation frequency,Boston bowel preparation score (BBPS),detection rate of lesions and adverse reactions.Results The frequency of defecations in group A was (7.6± 1.4),more than that in group B (6.6± 1.5) with statistical significance (P<0.05).The duration of bowel preparation in group A was (128.6±25.3) min,shorter than that of group B (165.4±29.7) min (P<0.05).The BBPS in group A was (8.09±0.67),better than that of group B (7.34±0.58) (P<0.05).The detection rates of intestinal polyps and micropolyps (diameter<0.5 cm) in group A were 73/178 (41.0%) and 51/178 (28.7%) respectively,compared with 58/190 (30.5%) and 37/190 (19.5%) in group B (both P<0.05).In group A,8 patients reported adverse reactions as abdominal distension and discomfort.One patient had ST-T abnormality of electrocardiogram (ECG).No nausea or vomiting occurred,yet 2 cases needed enema for inadequate bowel preparation.Twenty-one cases in group B reported adverse events including 7 with nausea and vomiting.There were 13 patients treated with enema.Abnormal ECG was found in 4 patients in group B.The satisfaction rate of group A was 97.8%,higher than that of group B (91.6%) (P<0.05).Conclusions The effect of bowel preparation of elderly patients with magnesium sulfate solution in split dose has a better tolerance,good cleaning effect and low incidence of adverse reactions.It is an ideal choice for the elderly to prepare colonoscopy.

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