因窦房结功能不全和/或房室传导异常引起的、任何低于 50 次/分的心脏节律，即使是一过性的情况。
评估包括确定症状与心率的关系以及评估潜在心血管疾病。12 导联 ECG 和/或心脏监护仪是首选的诊断性检查。
University of Iowa
Des Moines University
Mercy Hospital North Iowa
BO is a national research study coordinator for Boehringer Ingelheim. He is a consultant and speaker for Lundbeck.
Cardiologist and Cardiac Electrophysiologist
Oregon Heart Center
Consultant, Cardiology and Cardiac Electrophysiology
Salem Health Hospitals and Clinics
SS declares that he has no competing interests.
Director, Cardiac Electrophysiology Laboratories
Kansas City Heart Rhythm Institute and Research Foundation
EP Medical Director
Research Medical Center, HCA Midwest Health
Clinical Professor of Medicine
University of Missouri-Columbia
Associate Professor of Medicine (adjunct)
University of Louisville
RG is a consultant for St. Jude Medical and Boston Scientific. He is on the speakers' bureau for Pfizer Inc., Bristol Myers Squibb, and Zoll Medical. He serves as a physician advisor for HealthTrust PG and Abiomed. None of these activities are relevant to the content of this topic.
Professor Brian Olshansky, Dr. Sandeep Saha, and Professor Rakesh Gopinathannair would like to gratefully acknowledge Dr Giselle Statz for her contributions to this version of the topic. They would also like to acknowledge Dr Renee M. Sullivan, Dr Weiwei Li, Dr Alexander Mazur, and Dr Chirag M. Sandesara, previous contributors to this topic.
GS, RMS, WL, AM, and CMS declare that they have no competing interests.
Professor of Clinical Medicine
University of California
San Francisco General Hospital
Coronary Care Unit
ECG Laboratory and Pacemaker Clinic
NG declares that she has no competing interests.
Associate Professor of Medicine
PH declares that he has no competing interests.
Cardiology Center and Medical Polyclinics
University Hospital Geneva
JMS declares that he has no competing interests.