Objective To analyze the preoperative risk factors of atrial fibrillation (AF) in patients with coronary artery disease after coronary artery bypass grafting (CABG). Methods From September 2007 to April 2008, the clinical information of 226 patients who underwent onpump coronary artery bypass grafting(CABG)or offpump coronary artery bypass grafting(OPCAB) was collected. The patients were divided into nonAF group and AF group according to whether AF lasted more than 5 mins in 3 days after operation. Ultrasonic cardiography (UCG) and clinical information of preoperation in two groups were analyzed. Results Twentyfour（10.6%） patients had AF after operation. There were more patients whose left atrial diameter gt;35 mm in AF group than that in nonAF group ［41.7%（10）vs. 22.3% (45),χ2=4.380, P=0.036）］, more patients had mitral regurgitation in AF group than that in nonAF group ［37.5%（9） vs. 17.3% (35),χ2=5.568, P=0.018）］, more patients had left main coronary artery involvement in AF group than that in nonAF group ［33.3% (8) vs.12.4% (25),χ2=7.560,P=0.006］, and patients in AF group were older than those in nonAF group ［65.7±9.5 years vs. 60.1±10.1 years,t=-2.724,P=0.010］. In univariate analysis, in terms of preoperative clinical indexs such as the aged, mitral regurgitation, left atrial diameter, left mainm coronary artery involvement, and postoperative clinical indexs such as ventilatory time （χ2=4.190，P=0.040）, electrocardiogram (ECG) monitoring time（χ2=5.948，P=0.015）, hospitalization expense（χ2=4.110，P=0.043）, there were significant differences between 2 groups. Conclusion Risk factors such as the aged, mitral regurgitation, left atrial diameter and left main coronary artery involvement are related to AF after CABG. Clinical index, ECG and echocardiography are helpful to predict AF, and can provide better prevention and treatment, and reduce the rate of AF.
ObjectiveTo evaluate myocardial segmental motion function in left ventricular of patients with rheumatic mitral stenosis by using the technology of real-time three-dimensional echocardiography (RT-3DE).
MethodsWe retrospectively analyzed the clinical data of 14 patients with rheumatic mitral stenosis between October and November 2014 in our hospital as a trial group. There were 4 males and 10 females with a mean age of 50.9±9.0 years ranging from 34 to 64 years. We chose 11 healthy individuals as a control group. There were 7 males and 4 females with a mean age of 49.5±9.7 years ranging from 32 to 67 years. Both the two groups were subjected to myocardial performance evaluation using two-dimensional echocardiography (2DE) and real-time three-dimensional echocardiography (RT-3DE) to examine the left ventricular ejection fraction (LVEF), left ventricular end-diastolic volume (LVEDV), left ventricular end systolic volume (LVESV), longitudinal strain, circumferential strain, area strain, and lateral strain of each left ventricular myocardial segments. Result RT-3DE detected that the trial group had significantly lower values of LVEF, LVEDV and LVESV than those of the control group (P < 0.05). RT-3DE also revealed that the trial group had a significantly weaker longitudinal strain than the control group (P < 0.05).
ConclusionRT-3DE is an accurate technology for assessing myocardial motion and function in patients with rheumatic mitral valve disease.
ObjectiveTo investigate the high risk factors for perioperative atrial fibrillation (AF) and its effect on the postoperative short term outcome in esophageal carcinoma patients. MethodsSixty three patients with AF after esophagectomy (AF group) and 126 patients without AF after esophagectomy in control group were analyzed by χ 2, and logistic regression, and compare with patient the postoperative mortality and duration hospitalization in two groups.ResultsThe rates of age above 65 (χ 2=7.02, P lt;0.01), male sex (χ 2=4.06, P lt;0.05), history of cardiac disease (χ 2=6 03, P lt;0.05), history of chronic obstructive pulmonary disease (COPD, χ 2=29.14, P lt;0 01), postoperative thoracic gastric dilatation ( P lt;0.01), and postoperative lower oxygen saturation ( P lt;0.01) in AF group were significantly higher than those in control group. No significant relevance was found between history of diabetes or hypertension, choice of operative approach, site of stoma and postoperative AF. 1 in 15 AF patients regain sinus rhythm after remove the pathological factors, and the others resumed after antiarrhythmic drug therapy. The postoperative hospitalization time was 10.65±0.87 d in patients developing AF group and 9.98±0.96 d in control group ( P gt;0.05). No difference was observed between two groups with regard to mortality ( P gt;0.05).ConclusionAF occurs more frequently after esophagectomy in aged and male sex. Other factors contributing to AF are history of cardiac disease, COPD and lower oxygen saturation. And in this study, early occurrence of AF after operation for esophageal carcinoma does not show any negative impact on mortality or on postoperative duration hospitalization.
ObjectiveTo determine the effects of resecting the lower half of left stellate ganglion (LSG) on fast ventricular rate (VR) in persistent atrial fibrillation (AF) and its mechanism. MethodsTwelve mature healthy male beagle dogs (15–25 kg) were studied. They were randomly divided into two groups (an experimental group and a control group, 6 dogs in each group). The control group were merely performed with rapid left atrial pacing to induce persistent AF. The experimental group were disposed with rapid left atrial pacing and received resection of the lower half of LSG after the persistent AF was documented. Simultaneously the ventricular rates were monitored separately before anesthesia, after anesthesia, 30 minutes and one month after LSG resection. The forward passing effective refractory period (ERP) of the canine atrioventricular node (AVN) was also measured. ResultsEach dog was documented with persistent AF after 3–6 weeks’ left atrial pacing. After resecting the lower half of LSG for 30 minutes (the control group was only observed for 30 minutes without LSG resection), the average VR of the control group attained 144.5±4.2 beats/min, while that of the experimental group was 121.5±8.7 beats/min (P<0.001). After resecting the lower half of LSG for one month (the control group was observed for one month without LSG resection), the average VR of the control group was 139.2±5.6 beats/min, while that of the experimental group was 106.5±4.9 beats/min (P<0.001). Meantime, the forward passing ERP of AVN of the experimental group was significantly prolonged than that of the control group (265.6±7.8 ms vs. 251.1±4.6 ms, P=0.003). ConclusionResection of the lower half of LSG is efficient in reducing VR in canines with persistent AF, one of the mechanisms of which may be prolonging the forward passing ERP of AVN.
Abstract： Objective To explore a new videoassisted thoracoscopic surgical treatment for lone atrial fibrillation, in order to seek better efficacy, reduce invasiveness, and devise an easiertooperate surgical treatment for atrial fibrillation. Methods In June 2011, 3 women aged 40 years, 60 years, and 66 years with lone atrial fibrillation were treated in the Cardiovascular Surgery Department of West China Hospital. The patients underwent a videoassisted thoracoscopic “Box Lesion” bipolar radiofrequency atrial fibrillation therapy (bilateral pulmonary vein + left atrial posterior wall isolation), including three 5 to 10 mm small incisions on each side of the chest wall. The complications and sinus rhythm maintenance of the patients were observed. Results The operative times were 140 min, 170 min, and 155 min. The three patients were in sinus rhythm immediately after the surgery. Mean blood loss was approximately 80 ml, mean intensive care unit (ICU) stay was 1 day, and average hospital stay was 7 days. No deaths and serious complications occurred. The three patients were still in sinus rhythm one week and one month after the operation, as measured by electrocardiogram. Conclusion Box Lesion bipolar radiofrequency treatment for atrial fibrillation therapy shows fast postoperative recovery. It is a promising procedure in atrial fibrillation treatment and is worthy of further study.
Objective
To explore the operability of concomitant ablation for the patients with valvular heart diseases with left atrium bigger than 60 mm.
Methods
We prospectively included 306 patients with concomitant ablation in our hospital between 2013 and 2015 year. Based on diameter of left atrium measured by intra-operative transesophageal echocardiography (TEE), we separated these patients into two groups including a group L (left atrium >60 mm, 93 patients, 55 males and 38 females at age of 57.0±10.1 years) and a group S (left atrium <60 mm, 213 patients, 120 males and 93 females at age of 55.2±9.9 years) and followed them on 4 time points (time on discharge, three months, six months, and one year after surgery). Then, we analyzed the impact of left atrial size on cardioversion outcome of surgical ablation based on the following data.
Results
The successful rate of the group S and the group L in the 4 time points was 72.8% vs. 75.3%, 74.2% vs. 75.3%, 78.9% vs. 77.4%, and 77.0% vs. 77.4%, respectively . The result of both univariate logistic regression analysis and receiver operation characteristic(ROC) curve analysis showed that there was no statistical difference in cardioversion rates between the group S and the group L. And there was no evident correlation between size of left atrium and ablation failure.
Conclusion
Patients with left atrium enlarged from 60 mm to 70 mm can achieve the same satisfactory results in cardioversion, and should not be the contraindication of concomitant surgical ablation.
摘要:目的:探討胺碘酮治療充血性心力衰竭(CHF)心房顫動伴快速心室率的臨床療效。方法: 將106例各種原因所致的房顫伴快速心室率的CHF患者按入院順序隨機分為治療組及對照組。兩組抗CHF基礎治療相同,治療組加用靜脈負荷量胺碘酮150 mg后,再以1 000μg/min靜脈點滴維持6小時,500 μg/min靜滴18小時。同時口服胺碘酮0.2,3次/d,1周;再0.2,2次/d,1周以后以0.2,1次/d 至觀察終點,隨診為12個月。 結果: 治療組53例使用胺碘酮治療可顯著增加抗心律失常有效性,改善左室射血分數,減少心力衰竭再住院率,42例患者轉復為室性心律。 結論: 靜脈及口服胺碘酮同時應用治療充血性心力衰竭房顫是有效和安全的。Abstract: Objective: To explore the effect and safety of amiodarone in the treatment of atrial fibrillation with congestive heart failure. Methods:One hundred and six patients of AF with CHF caused by a variety of reasons were randomly divided into treatment group and control group according to hospitalized order.The two groups were treated with the same antiCHF therapy,the treatment group was treated with loaded intravenous amiodarone 150 mg;and then dripped to 1 000 μg/min for 6 hours, dripped to 500 μg/min for 18 hours. United with oral amiodarone by amiodarone tablets with 0.2 g,3 time/day a week,further 0.2 g,2 times/day a week,later 0.2 g,1 times/day to the end.The end of followup time was 12 months. Results:In treatment group,53 cases with amiodarone therapy can significantly increase the effectives of antiarrhythmic, improve the rate and heart failure rehospitalization.42/53 patients reversed to sinus rhythm. Conclusion:The results showed it is effective and safe united with intravenous amiodarone and oral amiodarone in treatment of atrial fibrillation with organic heart disease.
