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What are the causes of an arrhythmia?

ANSWER

An arrhythmia -- an abnormal heart rhythm -- may be caused by:

  • Infection or fever
  • Physical or emotional stress
  • Diseases such as anemia or thyroid disease
  • Drugs and other stimulants, such as caffeine, tobacco, alcohol, cocaine, amphetamines, and certain over-the-counter and prescription medications
  • Your genes
  • Some heart conditions

SOURCES:

Kenneth Ong, MD, associate chief of cardiology, director of Cardiology Fellowship Program, director of Cardiac Noninvasive Imaging Laboratory, Brooklyn Hospital Center. William G McDonald, MD, FAAEM, consulting staff, Department of Emergency Medicine, Arkansas Heart Hospital.

Kathryn L. Hale, MS, PA-C, medical writer, eMedicine.com. Alan D Forker, MD, program director of cardiovascular fellowship, professor of medicine, Department of Internal Medicine, University of Missouri at Kansas City School of Medicine.

Francisco Talavera, PharmD, PhD, senior pharmacy editor, eMedicine.

Anthony Anker, MD, FAAEM, attending doctor, Emergency Department, Mary Washington Hospital, Fredericksburg, VA.

Reviewed by Suzanne R. Steinbaum on August 24, 2017

SOURCES:

Kenneth Ong, MD, associate chief of cardiology, director of Cardiology Fellowship Program, director of Cardiac Noninvasive Imaging Laboratory, Brooklyn Hospital Center. William G McDonald, MD, FAAEM, consulting staff, Department of Emergency Medicine, Arkansas Heart Hospital.

Kathryn L. Hale, MS, PA-C, medical writer, eMedicine.com. Alan D Forker, MD, program director of cardiovascular fellowship, professor of medicine, Department of Internal Medicine, University of Missouri at Kansas City School of Medicine.

Francisco Talavera, PharmD, PhD, senior pharmacy editor, eMedicine.

Anthony Anker, MD, FAAEM, attending doctor, Emergency Department, Mary Washington Hospital, Fredericksburg, VA.

Reviewed by Suzanne R. Steinbaum on August 24, 2017

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What is the normal rate of a typical heart?

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