ABSTRACT
OBJECTIVE: To explore the effects and results of temporary cardiac pacing in children with bradyarrhythmia.METHODS: The clinical data of 55 children with bradyarrhythmia who received temporary cardiac pacing between June2007 and May 2018 in Children's Hospital of Chongqing Medical University were analyzed retrospectively. The clinical characteristics and curative effects were summarized and statistically analyzed. RESULTS: A total of 55 cases of bradyarrhythmia included 29 cases of severe atrioventricular block(AVB),sinus bradycardia or cardiac arrest caused by myocarditis,5 cases of Ⅲ°AVB or sick sinus syndrome caused by cardiomyopathy,6 cases of Ⅲ°AVB caused by congenital heart disease after surgery,5 cases of congenital Ⅲ°AVB,and 10 cases of perioperative temporary pacing Ⅲ°AVB.Among them,39 cases were compared in Adams-Stokes syndrome(P=0.003),34 cases were compared in ejection fraction and fractional shortening(P=0.000,P=0.001),and 26 patients were compared in left ventricular end diastolic diameter(P=0.001)before and after temporary pacing,and there were statistically differences. After treatment,18 cases were clinically cured,36 cases were improved,and 1 case died,among which 45% arrhythmia were improved or recovered,and 10 cases of perioperative children all passed through the anesthesia period. Kruskal-Wallis H(K)test showed that the clinical and arrhythmia prognosis of different basic cardiovascular diseases were not completely the same(P=0.001,P=0.000);Mann-Whitney U test indicated a better prognosis in the myocarditis group(P=0.001,P=0.000).CONCLUSION: Temporary cardiac pacing can effectively relieve the clinical symptoms of severe bradyarrhythmia caused by various etiologies,promote the recovery of acute conduction system injury,and reduce Ⅲ°AVB perioperative risk.Temporary cardiac pacing is a safe and effective prevention and first-aid technique.
ABSTRACT
Hypertrophic cardiomyopathy(HCM)is an inherited cardiomyopathy characterized by left ventricular hypertrophy without ventricular enlargement,which is one of the main causes of athletic sudden death in adolescents. Early detection of symptoms and timely diagnosis and treatment are of great value in preventing athletic sudden death and improving the prognosis. The diagnosis of HCM is based on medical history,physical examination and echocardiography,as well as family history and genetic testing in recent years. In recent years,cardiac magnetic resonance(CMR)and CT examination have become more and more important in the diagnosis of HCM. The aim of the article is to explore the characteristics of CMR and CT in the diagnosis of HCM.