Sinus bradycardia

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Sinus bradycardia
Sinusbradylead2.JPG

Sinus bradycardia seen in lead II with a heart rate of about 50.
ICD-9427.81
MeSHD001146
 
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Sinus bradycardia
Sinusbradylead2.JPG

Sinus bradycardia seen in lead II with a heart rate of about 50.
ICD-9427.81
MeSHD001146

Sinus bradycardia is a heart rhythm that originates from the sinus node and has a rate of under 60 beats per minute.

Signs and symptoms[edit]

The decreased heart rate can cause a decreased cardiac output resulting in symptoms such as lightheadedness, dizziness, hypotension, vertigo, and syncope. The slow heart rate may also lead to atrial, junctional, or ventricular ectopic rhythms.

Bradycardia is not necessarily problematic. People who regularly practice sports may have sinus bradycardia, because their trained hearts can pump enough blood in each contraction to allow a low resting heart rate.

Sinus bradycardia is a sinus rhythm of less than 60 bpm. It is a common condition found in both healthy individuals and those who are considered well conditioned athletes.

Causes[edit]

Diagnosis[edit]

ECG Characteristics

See also[edit]