- sinus beat
- a natural pulsation of the heart, originating in the sinus node.
Medical dictionary. 2011.
sinus beat
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Sinus rhythm — is a term used in medicine to describe the normal beating of the heart, as measured by an electrocardiogram (ECG). It has certain generic features that serve as hallmarks for comparison with normal ECGs. ECG Structure There are typically five… … Wikipedia
beat — 1. To strike; to throb or pulsate. 2. A stroke, impulse, or pulsation, as of the heart or pulse. 3. Activity of a cardiac chamber produced by catching a stimulus generated elsewhere in the … Medical dictionary
Sinus bradycardia — A regular but unusually slow heart beat (60 beats/minute or less at rest). Sinus bradycardia can be the result of many things including good physical fitness, medications, and some forms of heart block. Sinus refers to the sinus node, the heart s … Medical dictionary
Maxillary sinus — Outline of bones of face, showing position of air sinuses. Latin sinus maxilliaris Gray s … Wikipedia
Frontal sinus — Infobox Anatomy Name = Frontal sinus Latin = sinus frontales GraySubject = 223 GrayPage = 998 Caption = Paranasal sinuses Caption2 = Nose and nasal cavities Precursor = System = Artery = supra orbital, anterior ethmoidal Vein = Nerve =… … Wikipedia
ectopic beat — a heartbeat due to an impulse generated somewhere in the heart outside the sinoatrial node. Ectopic beats are generally premature in timing; they are classified as supraventricular if they originate in the atria and ventricular if they arise from … Medical dictionary
atrial beat — an ectopic beat originating within the atria; it occurs when the sinus node does not fire or fires ineffectively … Medical dictionary
atrioventricular (AV) junctional escape beat — a depolarization initiated in the atrioventricular junction when one or more impulses from the sinus node are nonexistent or ineffective … Medical dictionary
interpolated beat — a contraction occurring exactly between two normal heart beats without altering the sinus rhythm … Medical dictionary
rhythm — 1. Measured time or motion; the regular alternation of two or more different or opposite states. 2. SYN: r. method. 3. Regular or irregular occurrence of an electrical event in the electrocardiogram or electroencephalogram. SEE ALSO: wave. 4.… … Medical dictionary
