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find Author "ZHANG Hang" 9 results
  • COMPARISON OF EFFECTIVENESS BETWEEN LAMINOPLASTY AND LAMINECTOMY DECOMPRESSION AND FUSION WITH INTERNAL FIXATION FOR CERVICAL SPONDYLOTIC MYELOPATHY

    ObjectiveTo compare the clinical and radiographic outcomes between laminoplasty and laminectomy compression and fusion with internal fixation to treat cervical spondylotic myelopathy. MethodsBetween September 2006 and September 2009, 143 cases of multilevel cervical myelopathy (the affected segments were more than 3) were treated by laminoplasty in 87 cases (group A) and by laminectomy decompression and fusion with lateral mass screw fixation in 56 cases (group B). There was no significant difference in gender, age, disease duration, pathological type, and affected segments between 2 groups (P gt; 0.05). The operation time, intraoperative blood loss, improvement of neurological function [Japanese Orthopaedic Association (JOA) 17 score], and the incidences of complications were observed; the cervical curvature index (CCI), range of motion (ROM), and symptoms of neck and shoulder pain [visual analogue scale (VAS) and neck disability index (NDI) scores] were recorded and compared. ResultsThere was no significant difference in operation time and intraoperative blood loss between 2 groups (P gt; 0.05). All patients were followed up 18-30 months (mean, 24 months). C5 nerve root palsy occurred in 4 cases (4.60%) of group A and in 5 cases (8.93%) of group B, showing no significant difference (χ2=0.475, P=0.482). No complication of deep infection, pseudarthrosis, or screw loosening occurred. No closure of opened laminae was observed in group A; and no screw extrusion, breakage, or nerve injury was observed in group B. At last follow-up, neck axial symptoms appeared in 35 cases (40.23%) of group A and in 11 cases (19.64%) of group B, showing significant difference (χ2=6.612, P=0.009). No significant difference was found in JOA score, CCI, ROM, or VAS scores between 2 groups at preoperation (P gt; 0.05); the JOA score, ROM, and VAS scores of groups A and B and CCI of group A at last follow-up were significantly improved when compared with preoperative ones (P lt; 0.05). No significant difference was found in the JOA score, improvement rate, and VAS score between 2 groups (P gt; 0.05); however, significant differences were found in ROM and CCI between 2 groups (P lt; 0.05). There were significant differences (P lt; 0.05) in pain intensity, lifting, work, reaction, driving, and total score between 2 groups at last follow-up. ConclusionLaminectomy decompression and fusion with internal fixation can effectively relieve pain, but it will greatly reduce the ROM; laminoplasty has less complications and satisfactory outcome. The two methods have similar effectiveness in the improvement of neurological function.

    Release date:2016-08-31 04:21 Export PDF Favorites Scan
  • Risk factors and perioperative outcomes of prolonged mechanical ventilation after coronary artery bypass grafting in elderly patients

    Objective To investigate the clinical characteristics, risk factors and perioperative outcome of prolonged mechanical ventilation (PMV) in elderly patients undergoing coronary artery bypass grafting (CABG). Methods The data of elderly patients receiving CABG in the Nanjing First Hospital from January 2013 to June 2019 were collected. All patients were divided into a control group and a PMV group according to whether ventilation time≥24 h.The clinical characteristics and risk factors of PMV were compared between the two groups. Variables were 1∶1 balanced through propensity score matching (PSM) and perioperative outcomes of two groups was analyzed. Results Finally 956 patients were collected, including 187 in the PMV group and 769 in the control group. There were 586 males and 370 females aged 70-94 (74.3±3.5) years. Compared with the control group, the PMV group had higher rates of smoking, preoperative renal impairment, intraoperative blood transfusion and intra-aortic balloon pump (IABP) implantation, worse cardiac function, lower glomerular filtration rate and ejection fraction, larger left atrial diameter, longer cardiopulmonary bypass time and aortic cross-clamping time (P<0.05). There was no statistical difference in other clinical data between the two groups (P>0.05). Binary multivariate logistic regression analysis showed that females, smoking, chronic obstructive pulmonary disease, left ventricular ejection fraction≤56.0%, cardiopulmonary bypass time>106.0 min, IABP implantation and intraoperative blood transfusion were independent risk factors for PMV in elderly patients. After PSM, there were 146 patients in the control group and the PMV group, respectively. The PMV group had longer ICU stay and length of hospital stay and more drainage volume compared with the control group (all P<0.05). There was no statistical difference in perioperative mortality or other complications between the two groups (all P>0.05). ConclusionThere are a lot of factors associated with PMV of the elderly patients undergoing on-pump CABG. In order to establish a complete and formal PMV prediction model, clinicians can make a further step of assessment according to perioperative elements, and improve the prognosis of such patients.

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  • Clinical analysis on Phrenitis after Spine Surgery

    【摘要】 目的 探讨脊柱外科手术患者术后发生谵妄的危险因素和有效防治措施。 方法 2007年1月-2009年10月应用ICU谵妄诊断的意识状态评估法观察1 835例脊柱外科术后患者。对于发生术后谵妄的患者随机分为治疗组和未治疗组,治疗组于谵妄诊断明确时即静脉注射氟哌利多5 mg。 结果 术后3 d,136例发生谵妄,谵妄发生率为7.41%。筛选出术后谵妄的可能高危因素包括高龄、术前合并高血压、术前合并糖尿病、术中出血量gt;600 mL、手术时间gt;4 h、术中应用激素、术后电解质紊乱和低氧血症、术后疼痛。发生谵妄的患者中,治疗组(68例)住院时间短于未治疗组(68例),差异有统计学意义(Plt;0.05)。 结论 高龄,术前合并高血压、糖尿病,术中出血量gt;600 mL,手术时间gt;4 h,术中应用激素,术后电解质紊乱、低氧血症及疼痛是脊柱外科手术患者术后发生谵妄的主要高危因素。氟哌利多治疗术后谵妄有效。【Abstract】 Objective To analyze the related factors influencing postoperative phrenitis in patients who have undergone spine surgery. Methods Postoperative phrenitis was evaluated with the confusion assessment method for the intensive care unit in 1 835 patients underwent spine surgery between January 2007 and October 2009. All the patients with postoperative phrenitis were randomly divided into two groups: treatment group and control group. The patients in treatment group underwent intravenous injection with droperidol (5 mg). Results Three days after the operation, 136 patients were diagnosed with postoperative phrenitis. The pre-operative complications of hypertension and diabetes, hemorrhage amount (gt;600 mL) during the operation, operative time (gt;4 hours), hormone usage during the operation, postoperative electrolyte disturbances, hyoxemia and pain were the factors influencing the morbidity of postoperative phrenitis. The length of hospital stay was shorter in the treatment group than that in the control group (Plt;0.05). Conclusions Senility, pre-operative complications of hypertension and diabetes, hemorrhage amount (gt;600 mL) during the operation, operative time (gt;4 hours), hormone usage during the operation, postoperative electrolyte disturbances, hyoxemia and pain were the factors influencing the morbidity of postoperative phrenitis. Droperidol is effective on postoperative phrenitis.

    Release date:2016-08-26 02:18 Export PDF Favorites Scan
  • CLINICAL ANALYSIS OF C5 NERVE ROOT PALSY IN HINGE SIDE AND DIFFERENT ANGLES IN LAMINA OPEN-DOOR AFTER EXPANSION OF OPEN-DOOR CERVICAL LAMINOPLASTY

    Objective To evaluate and compare the relation of the cl inical results of expansion of open-door cervical laminoplasty (EOLP), C5 nerve root palsy in hinge side, and reclose of the opened laminae with different angles in lamina opendoor.Methods Between July 2006 and January 2009, 198 patients with cervical myelopathy were treated by EOLP. Accordingto different opening angles which were measured by CT scan after operation, the patients were divided into group A (gt; 30°, 76 patients including 44 males and 32 females) and group B (15-30°, 122 patients including 71 males and 51 females). There was no significant difference in gender, age, disease duration, and segmental lesions between 2 groups (P gt; 0.05). The Japanese Orthopaedic Association (JOA) score before and after operation was used for neurological assessment and improvement rate, and the postoperative C5 nerve root palsy and reclose of the opened laminae were recorded. Results There was no significant difference in operation time, bleeding volume, and hospital ization days between 2 groups (P gt; 0.05). After 3 weeks of operation, C5 nerve root palsy in the hinge side occurred in 7 patients (9.2%) of group A, and in 2 patients (1.6%) of group B, were restored after symptomatic treatment, showing significant difference between 2 groups (χ2= 4.568, P= 0.033). All patients were followed up 24 to 48 months. Between group A and group B, no significant difference was found in JOA improvement rate at 24 months after operation (P gt; 0.05), and in JOA score at preoperation and at 24 months after operation (P gt; 0.05), but JOA score was significantly improved at 24 months after operation when compared with preoperative score in the same group (P lt; 0.05). The function of l imb l ifting restored in 9 cases of C5 nerve root palsy at 24 months after operation; CT examination revealed that no reclose occured in group A and reclose occurred in 4 cases (3.3%) of group B, but no persistent symptoms or worsen situationwere found during follow-up. Conclusion Different angles in lamina open-door have the same cl inical result; C5 nerve palsy has good prognosis. The opening angle between 15° and 30° will reduce the incidence of C5 nerve root palsy in the hinge side, but the open side should be firmly fixed to prevent further reclose of the opened laminae.

    Release date:2016-08-31 05:42 Export PDF Favorites Scan
  • New-onset conduction block after transcatheter aortic valve replacement: A retrospective analysis in a single center

    ObjectiveTo investigate the new-onset conduction block after transcatheter aortic valve replacement (TAVR) and summarize the relevant experience. Methods The perioperative data of TAVR patients in the Second Hospital of Hebei Medical University from 2016 to 2023 were collected, and the new-onset incidence of conduction block after TAVR was analyzed retrospectively. ResultsThere were 352 patients of TAVR operation (256 patients of Venus-A, 69 patients of Vita-Flow, 27 patients of J-Valve), among whom 38 (10.8%) patients of new-onset postoperative block. There were 6 (1.7%) patients of new-onset postoperative grade Ⅲ atrioventricular block, including 5 (2%) patients of Venus A and 1 (1.4%) patient of Vita-Flow. Conduction function was restored in 2 patients within 14 days after surgery, and failed to be restored in 4 patients, who then received permanent pacemaker implantation in the department of cardiology. There were 27 (7.7%) patients of new left bundle branch block after surgery, including 22 (8.6%) patients of Venus-A , 4 (5.8%) patients of Vita-Flow and 1 (3.7%) patient of J-Valve; and conduction function was restored within 7 days after surgery in 23 patients, and 5 (1.4%) patients developed new right bundle branch blocks after surgery including 4 (1.5%) patients of Venus-A and 1 (1.4%) patient of Vita-Flow. Conclusion New-onset block is a common complication after TAVR, the new-onset rate of left bundle branch block is the highest, followed by the grade Ⅲ atrioventricular block. Mastering reasonable methods and applying appropriate strategies can also effectively reduce the new rate of postoperative conduction block and improve the overall success rate of TAVR surgery.

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  • Short-term results of transcatheter aortic valve replacement using Venus A-Plus valve delivery system in patients with severe aortic stenosis: A retrospective cohort study

    Objective To evaluate the short-term efficacy of transcatheter aortic valve replacement (TAVR) using Venus A-Plus valve delivery system in patients with severe aortic stenosis. Methods The clinical data of patients undergoing TAVR in our hospital from August 2018 to March 2022 were collected and divided into a Venus A-PLUS and a Venus A group according to the type of valve delivery system used. The perioperative data of the two groups were compared. ResultsA total of 121 patients were included, including 70 patients in the Venus A-Plus group (45 males and 25 females with a mean age of 67.81±6.62 years), and 51 patients in the Venus A group (33 males and 18 females with a mean age of 68.25±7.01 years). All patients underwent TAVR, and the postoperative hemodynamic features (left ventricular ejection fraction, mean cross-valve pressure difference, peak flow rate) were significantly improved (P<0.05). There was no statistical difference in surgical success rate, all-cause mortality, conversion to thorax opening, midvalve placement, moderate or above perivalvular regurgitation, new left bundle branch block or new right bundle branch block between the two groups (P>0.05). Conclusion TAVR with Venus A-Plus valve delivery system in patients with severe aortic stenosis is satisfactory, safe and reliable.

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  • Numerical simulation of a self-powered Fontan based on venturi effect

    ObjectiveTo investigate the effects of a self-powered conduit in different patients’ models who underwent extracardiac Fontan procedure.MethodsFour children who underwent extracardiac Fontan procedure in Shanghai Children's Medical Center from 2011 to 2017 year were selected. Venae cavae and pulmonary arteries were reconstructed using Mimics 19.0®. In silico, a venturi conduit was introduced to the anastomosis of venae cavae and pulmonary artery. Then computational fluid dynamics simulation was performed using patients’ clinical data.ResultsWhen inferior venae cavae were directly to or to the left of superior venae cavae, the venturi conduit could assist the return of venous blood and reduce the pressures of venae cavae about 0.5 mm Hg. And the pressure differences between venae cavae and pulmonary arteries were about –0.7 mm Hg, which suggested that the conduit could generate right ventricle-like effect.ConclusionThe venturi conduit can reduce the pressure of venae cavae, increase pulmonary circulation flow and improve Fontan hemodynamics.

    Release date:2019-08-12 03:01 Export PDF Favorites Scan
  • Short-term clinical efficacy of one-stop TAVR+PCI in the treatment of patients with aortic valve disease and coronary heart disease

    ObjectiveTo analyze the short-term clinical efficacy and prognosis of one-stop transcatheter aortic valve replacement (TAVR)+percutaneous coronary intervention (PCI) in the treatment of aortic valve disease with coronary heart disease. MethodsThe clinical data of patients with aortic valve disease complicated with coronary heart disease who underwent one-stop TAVR+PCI treatment at the Department of Cardiovascular Surgery, the Second Hospital of Hebei Medical University from January 2018 to June 2023 were retrospective analyzed. The preoperative and postoperative clinical data were compared, and 1-month follow-up results were recorded. ResultsA total of 37 patients were enrolled, including 22 males and 15 females, with an average age of 69.14±6.47 years. Thirty-six patients recovered and were discharged after the surgery, and 1 (2.7%) patient died during the surgery. Self-expanding TAVR valves were implanted through the femoral artery in all patients. One coronary artery was opened by PCI in 35 (94.6%) patients, and two coronary arteries were opened by PCI in 2 (5.4%) patients. All PCI opened arteries had a stenosis>70%. During the postoperative hospitalization, the complications included pulmonary infection in 11 (30.6%) patients, severe pneumonia in 10 (27.8%) patients, liver function injury in 14 (38.9%) patients, renal function injury in 5 (13.9%) patients, cerebral infarction in 1 (2.8%) patient, atrial fibrillation in 1 (2.8%) patient, ventricular premature beats in 2 (5.6%) patients, atrioventricular block in 2 (5.6%) patients, and complete left bundle branch block in 5 (13.9%) patients. The median postoperative ventilation assistance time was 12.0 (0.0, 17.0) h, the ICU monitoring time was 1.0 (0.0, 2.0) d, and the postoperative hospitalization time was 5.0 (4.0, 7.0) d. There was a significant improvement in the New York Heart Association cardiac function grading after surgery (P<0.001). After surgery, there were 21 (58.3%) patients had minor perivalve leakage, 6 (16.7%) patients had minor to moderate perivalve leakage, and no moderate or above degree of perivalve leakage. After one month of postoperative follow-up, 36 patients showed significant improvement in heart function. There were no patients with recurrent acute coronary syndrome, re-PCI, or cardiovascular system disease related re-hospitalization. ConclusionThe one-stop TAVR+PCI treatment for patients with aortic valve disease and coronary heart disease can obtain satisfactory short-term clinical efficacy, which is worth further trying and studying.

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  • Influence of prior percutaneous coronary intervention on outcome of coronary artery bypass grafting: A multi-center clinical study

    Objective To investigate the influence of prior percutaneous coronary intervention (PCI) on the outcome of coronary artery bypass grafting (CABG). Methods Clinical data of 5 216 patients from Jiangsu Province CABG registry who underwent primary isolated CABG from 2016 to 2019 were retrospectively analyzed. Patients were divided into a PCI group (n=673) and a non-PCI group (n=4 543) according to whether they had received PCI treatment. The PCI group included 491 males and 182 females, aged 62.6±8.2 years, and the non-PCI group included 3 335 males and 1 208 females, aged 63.7±8.7 years. Multivariable logistic regression and propensity score matching (PSM) were used to compare 30-day mortality, incidence of major complications and 1-year follow-up outcomes between the two groups. Results Both in original cohort and matched cohort, there was no statistical difference in the 30-day mortality [14 (2.1%) vs. 77 (1.7%), P=0.579; 14 (2.1%) vs. 11 (1.6%), P=0.686], or the incidence of major complications (myocardial infarction, stroke, mechanical ventilation≥24 h, dialysis for new-onset renal failure, deep sternal wound infection and atrial fibrillation) (all P>0.05). The rate of reoperation for bleeding in the PCI group was higher than that in the non-PCI group [19 (2.8%) vs. 67 (1.5%), P=0.016; 19 (2.8%) vs. 7 (1.0%), P=0.029]. Both in original cohort and matched cohort, there was no statistical difference in 1-year survival rate between the two groups [613 (93.1%) vs. 4225 (94.6%), P=0.119; 613 (93.1%) vs. 630 (95.2%), P=0.124], while the re-admission rate in the PCI group was significantly higher than that in the non-PCI group [32 (4.9%) vs. 113 (2.5%), P=0.001; 32 (4.9%) vs. 17 (2.6%), P=0.040]. Conclusion This study shows that a history of PCI treatment does not significantly increase the perioperative mortality and major complications of CABG, but increases the rate of cardiogenic re-admission 1 year postoperatively.

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