Dizziness is one of the most common health concerns. However, few cases of dizziness are due to serious conditions.
Fatigue can signal many things. Here are some tips to help you decipher why you're wiped out and to regain your energy.
Heart palpitations are skipped, fluttering or racing heartbeats that aren't usually a symptom of a serious heart problem. Discover the causes and symptoms of this condition.
Shortness of breath can be frightening. Most of the time, a heart or lung condition is the cause.
Tests and diagnosis
An electrocardiogram (ECG or EKG) is a test that provides valuable clues about your heart health. Here's what you need to know about the test.
Treatments and drugs
A pacemaker can correct a heartbeat that's too slow. Find out the risks, results and recovery time of the procedure to implant a pacemaker.
May 13, 2014
- Zipes DP, et al. Cardiac Elecrophysiology: From Cell to Bedside. 6th ed. Philadelphia, Pa.: Saunders Elsevier; 2014. http://www.clinicalkey.com. Accessed Jan. 8, 2014.
- Sinus node dysfunction. The Merck Manuals: The Merck Manual for Health Care Professionals. http://www.merckmanuals.com/professional/cardiovascular_disorders/arrhythmias_and_conduction_disorders/sinus_node_dysfunction.html. Accessed Jan. 8, 2014.
- Lau CP, et al. Prospective randomized study to assess the efficacy of site and rate of atrial pacing on long-term progression of atrial fibrillation in sick sinus syndrome: Septal pacing for atrial fibrillation suppression evaluation (SAFE) study. Circulation. 2013;128:687.
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- Semelka M, et al. Sick sinus syndrome: A review. American Family Physician. 2013;87:691.
- What is a pacemaker? National Heart, Lung, and Blood Institute. http://www.nhlbi.nih.gov/health/health-topics/topics/pace/. Accessed Jan. 8, 2014.
- Tracy CM, et al. 2012 ACCF/AHA/HRS focused update incorporated into the ACCF/AHA/HRS 2008 guidelines for device-based therapy of cardiac rhythm abnormalities. Journal of the American College of Cardiology. 2013;61:e6.
- Non-surgical procedures for atrial fibrillation (Fib or AF). American Heart Association. http://www.heart.org/HEARTORG/Conditions/Arrhythmia/AboutArrhythmia/Non-surgical-Procedures-for-Atrial-Fibrillation-Fib-or-AF_UCM_423782_Article.jsp. Accessed Jan. 8, 2014.
- Your guide to a healthy heart. National Heart, Lung, and Blood Institute. http://www.nhlbi.nih.gov/health/public/heart/other/your_guide/yg_hh.htm. Accessed Jan. 8, 2014.