Sinus rhythm with a rate that is lower than normal
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Medical condition
Sinus bradycardia
ECG of Sinus bradycardia with a heart rate of 43 bpm.
Specialty
Cardiology
Symptoms
lightheadedness
dizziness
hypotension
vertigo
syncope
Diagnostic method
electrocardiogram
Sinus bradycardia is a sinus rhythm with a reduced rate of electrical discharge from the sinoatrial node, resulting in a bradycardia, a heart rate that is lower than the normal range (60–100 beats per minute for adult humans).[1][2]
^Hafeez Y, Grossman SA (2020). "Sinus Bradycardia". StatPearls. Treasure Island (FL): StatPearls Publishing. PMID 29630253. Retrieved 2020-07-27.
Sinusbradycardia is a sinus rhythm with a reduced rate of electrical discharge from the sinoatrial node, resulting in a bradycardia, a heart rate that...
by a malfunction of the sinus node, the heart's primary pacemaker. Tachycardia-bradycardia syndrome is a variant of sick sinus syndrome in which the arrhythmia...
broad categories of sinus node dysfunction (SND), atrioventricular block, and other conduction tissue diseases. However, bradycardia can also result without...
discouraged. Other types of sinus rhythm that can be normal include sinus tachycardia, sinusbradycardia, and sinus arrhythmia. Sinus rhythms may be present...
Sinus tachycardia is a sinus rhythm of the heart, with an increased rate of electrical discharge from the sinoatrial node, resulting in a tachycardia,...
are also classified by site of origin:[citation needed] SinusbradycardiaSinus arrhythmia Sinus tachycardia Premature atrial contractions (PACs) Wandering...
mediators in thrombus formation. Coronary sinus thrombosis as a severe complication after procedures. The coronary sinus is the venous counterpart to the coronary...
antiarrhythmic drugs. Most episodes will revert spontaneously to a normal sinus rhythm. Symptoms and consequences include palpitations, dizziness, lightheadedness...
Reflex bradycardia is a bradycardia (decrease in heart rate) in response to the baroreceptor reflex, one of the body's homeostatic mechanisms for preventing...
refractory AV node and not be conducted. This can be mistaken for sinusbradycardia if the PAC is buried in the T wave since the PAC will reset the SA...
escape rhythm. If no other pacemaker begins pacing during an episode of sinus arrest it becomes a cardiac arrest. This condition is sometimes confused...
any resulting severe or life-threatening symptoms, such as symptomatic bradycardia or hypotension, and, thus, do not require treatment. Similarly, patients...
Inappropriate sinus tachycardia (IST) is defined as sinus tachycardia that is not caused by identifiable medical ailments, a physiological reaction, or...
automatic rate of electrical discharge. Inappropriate sinus tachycardia (IST) is defined as sinus tachycardia that is not caused by medical ailments, a...
skin contact of the electrode Physiologic J-junctional depression with sinus tachycardia Hyperventilation Other, non-ischemic, causes include: Side effect...
Electrocardiographic abnormalities were noted to be common, the most common being sinusbradycardia. Around half of the patients develop thrombocytopenia. Temporary cardiac...
similar in morphology to each other Might be inverted Differs from normal sinus P wave May exhibit either long RP or short PR intervals Rhythm may be paroxysmal...
BradycardiaSinusbradycardia Sick sinus syndrome Heart block: Sinoatrial AV 1° 2° 3° Intraventricular Bundle branch block Right Left Left anterior fascicle...
BradycardiaSinusbradycardia Sick sinus syndrome Heart block: Sinoatrial AV 1° 2° 3° Intraventricular Bundle branch block Right Left Left anterior fascicle...
periodic, and occur only during an "episode", usually after eating. Sinusbradycardia Difficulty inhaling Angina pectoris Left ventricular discomfort Premature...
spread to the limbs. Cardiovascular features include hypotension, sinusbradycardia, and ventricular arrhythmias. Other features may include sweating...
The ECG can detect sinusbradycardia, a resting heart rate of fewer than 60 beats per minute. This is often accompanied by sinus arrhythmia. The pulse...
near-normal range (known as rate control) or to convert the rhythm to normal sinus rhythm (known as rhythm control). Electrical cardioversion can convert AF...
atrioventricular node). This most commonly occurs in the setting of a sinusbradycardia. Accelerated idioventricular rhythm is the most common reperfusion...
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