No abstract available.
Arrhythmias, Cardiac* ; Drug Therapy*

Arrhythmias, Cardiac ; therapy ; Humans ; Integrative Medicine

Humans ; Death, Sudden, Cardiac/prevention & control* ; Arrhythmias, Cardiac/therapy*

OBJECTIVE: To study the effects of cardiac resynchronization therapy (CRT) with different pacing rates and modes on MTWA.
 METHODS: From March, 2012 to October, 2014, 43 patients who received CRT or CRT-D implantation in the first affiliated hospital, Nanjing Medical University were studied. Time-domain MTWA test were assessed following CRT implantation. MTWA was measured at 90 min(-1) and 110 min(-1) by treadmill exercise test with GE CASE 8000 during CRT-on (BIV biventricular) and CRT-off (RA right atrial) pacing modes. The comparsion of MTWA values between different pacing mode and pacing rates were analyzed. According to the heart function classification the patients were divided into 3 groups. The correlation between MTWA and cardiac function was analyzed.
 RESULTS: MTWA-AAI was significantly increased compared to MTWA-BIV at the pacing rate of 90 min(-1) [(11.27±9.94) µV vs (7.09±7.16) µV, P=0.001]. The value of MTWA at pacing rate of 110 min(-1) was nonsignificantly higher than MTWA during AAI pacing [(16.91±12.51) µV vs (15.58± 10.97) µV, P=0.517]. The value of MTWA at pacing rate of 110 min(-1) was higher than MTWA at pacing rate of 90 min(-1) during AAI or BIV (P<0.05). MTWA-AAI and MTWA-BIV in group of NYHA IV were higher than those in group of NYHA II (P<0.05).
 CONCLUSION Biventricular pacing mode at lower pacing rates can significantly attenuate MTWA. The value of MTWA is associated with the severity of CHF.
Arrhythmias, Cardiac ; therapy ; Cardiac Resynchronization Therapy ; Exercise Test ; Heart Failure ; therapy ; Humans

As an important medical electronic equipment for the cardioversion of malignant arrhythmia such as ventricular fibrillation and ventricular tachycardia, cardiac external defibrillators have been widely used in the clinics. However, the resuscitation success rate for these patients is still unsatisfied. In this paper, the recent advances of cardiac external defibrillation technologies is reviewed. The potential mechanism of defibrillation, the development of novel defibrillation waveform, the factors that may affect defibrillation outcome, the interaction between defibrillation waveform and ventricular fibrillation waveform, and the individualized patient-specific external defibrillation protocol are analyzed and summarized. We hope that this review can provide helpful reference for the optimization of external defibrillator design and the individualization of clinical application.
Arrhythmias, Cardiac ; Defibrillators ; Heart ; Heart Arrest ; Humans ; Ventricular Fibrillation/therapy*

Temporary cardiac pacing is an essential technique in the diagnosis and treatment of arrhythmias. Due to its urgency, complexity, and uncertainty, it is necessary to develop an evidence-based emergency operation norms. Currently, there is no specific consensus guidelines at home or abroad. The Emergency Branch of Chinese Medical Association organized relevant experts to draft the Chinese emergency expert consensus on bedside temporary cardiac pacing (2023) to guide the operation and application of bedside cardiac pacing. The formulation of the consensus adopts the consensus meeting method and the evidentiary basis and recommendation grading of the Oxford Center for Evidence-based Medicine in the United States. A total of 13 recommendations were extracted from the discussion on the methods of bedside temporary cardiac pacing, the puncture site of transvenous temporary cardiac pacing, the selection of leads, the placement and placement of leads, pacemaker parameter settings, indications, complications and postoperative management. The recommended consensus includes the choice between transcutaneous and transvenous pacing, preferred venous access for temporary transvenous pacing, the target and best guidance method for implantation of bedside pacing electrodes, recommended default pacemaker settings, recommended indications for sinoatrial node dysfunction, atrioventricular block, acute myocardial infarction, cardiac arrest, ventricular and supraventricular arrhythmias. They also recommended ultrasound guidance and a shortened temporary pacing support time to reduce complications of temporary transvenous cardiac pacing, recommended bedrest, and anticoagulation after temporary transvenous pacing. Bedside temporary cardiac pacing is generally safe and effective. Accurate assessment, correct selection of the pacing mode, and timely performance of bedside temporary cardiac pacing can further improve the survival rate and prognosis of related emergency patients.
Humans ; Cardiac Pacing, Artificial/methods* ; Pacemaker, Artificial ; Arrhythmias, Cardiac/therapy* ; Myocardial Infarction/therapy* ; Electrodes

Although antiarrhythmic medication has been the main treatment modality for arrhythmia in children, in recent decades technological development and computerization have made great advances in nonpharmacological therapy. This article reviews the transcatheter radiofrequency ablation for tachycardia in children, recent advances of device therapy for bradycardia, antitachycardia pacing, implantable cardioverter defibrillator. As a new field of device therapy, cardiac resynchronization therapy for congestive heart failure is also mentioned.
Arrhythmias, Cardiac* ; Bradycardia ; Cardiac Resynchronization Therapy ; Catheter Ablation ; Child ; Defibrillators ; Heart Failure ; Humans ; Tachycardia

The use of an implantable cardioverter-defibrillator (ICD) is an effective treatment strategy for patients with aborted sudden cardiac death (SCD) and ventricular tachyarrhythmias. Primary prevention of SCD is a strategy involving the use of ICDs in patients who are at high risk for but who have not had any previous events of ventricular arrhythmias or cardiac arrest. Cardiac resynchronization therapy (CRT) improves symptoms of heart failure and left ventricular systolic function when used in patients with severe heart failure symptoms, reduced left ventricular ejection, and a wide QRS complex. CRT has also been proven to reduce the rate of hospitalization due to heart failure as well as the rate of death from any cause. In this review, we discuss the clinical trials and current clinical indications for the ICD and CRT.
Arrhythmias, Cardiac ; Cardiac Resynchronization Therapy* ; Death, Sudden, Cardiac ; Defibrillators, Implantable* ; Heart Arrest ; Heart Failure ; Hospitalization ; Humans ; Primary Prevention ; Tachycardia

Acupuncture Points ; Acupuncture Therapy ; instrumentation ; Adult ; Aged ; Arrhythmias, Cardiac ; therapy ; Female ; Humans ; Male ; Middle Aged ; Needles

Adolescent ; Adult ; Arrhythmias, Cardiac ; therapy ; Chiropractic ; Combined Modality Therapy ; Humans ; Male ; Massage ; Middle Aged ; Young Adult