normal sinus rhythm


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Related to normal sinus rhythm: Sinus tachycardia

nor·mal si·nus rhythm

(nōŕmăl sīnŭs ridhŭm)
Beating of the heart that falls within the range of what is considered to indicate good health.

normal sinus rhythm

The normal heart rhythm whose pacemaker is in the sinoatrial node and whose conduction through the atria, atrioventricular node, and ventricles is unimpaired. The interval between complexes is regular, the ventricular rate is 60 to 100, there are upright P waves in leads I and II, a negative P wave in lead AVR, a P-R interval of 0.12 to 0.20 sec, and one P wave preceding each QRS complex. Synonym: sinus rhthym
See also: rhythm
References in periodicals archive ?
This is the major factor why the mechanical responses of the LV (LV PV-loop, LV pressure, and CO) were also the same as that in normal sinus rhythm. Even the CRT implementation in the RBBB condition did not affect the mechanical responses of the LV chamber.
If the cardiac functions of such patients are normal, they may be clinically monitored until normal sinus rhythm is restored.
Patients without an operative complication or with a nonstroke complication end the short-term model either in normal sinus rhythm (NSR) or with atrial fibrillation (AF).
The prescribing information for dronedarone has been revised to reflect the results of the safety review, and now advises against prescribing dronedarone to patients with AF "who will not or cannot be converted into normal sinus rhythm," because "it doubles the rate of cardiovascular death, stroke, and heart failure in such patients." The label also recommends an electrocardiogram to monitor heart rhythm in patients on the drug "at least once every three months," and if a patient is in AF, treatment should be stopped or, "if clinically indicated," the patient should be cardioverted.
In this particular case, it even enabled conversion to normal sinus rhythm during the ablation of the right superior pulmonary vein.
(12) Hospitalization may also include the need for more definitive care, including catheter or surgical ablation techniques to restore normal sinus rhythm. (1), (8), (9), (12)
He was in normal sinus rhythm at the time of surgery, which was carried out under combined spinal epidural anaesthesia without adverse intraoperative event.
Intuitively, restoring normal sinus rhythm seems superior to rate control, but several randomized trials (9-12) and one meta-analysis (13) found no support for that belief when researchers looked at mortality, thromboembolic events, and major hemorrhage.
An electrocardiogram showed normal sinus rhythm. A transthoracic echocardiogram demonstrated a ventricular septal defect and vegetations on the septal leaflet of the tricuspid valve.
Despite Coreg, Digoxin, etc., he has not been able to revert to a normal sinus rhythm.
Its 14 chapters cover epidemiology, etiology and pathogenesis, electrophysiological mechanisms relating to pharmacological therapy of atria fibrillation, lessons learned from preclinical models, rate control versus maintenance of sinus rhythm, strategies for rate control, anticoagulation, cardioversion, pharmacological cardioversion of atrial fibrillation, maintenance of normal sinus rhythm with antiarrhythmic drugs, device therapy, catheter ablation of atrial fibrillation, atrial fibrillation after cardiac surgery, and treatment of atrial fibrillation in the recent past and future.
Recommendations center on the main issues that arise in managing patients with postoperative AF, including overall prevention; control of ventricular response rate; restoration of normal sinus rhythm; prevention of thromboembolism; and the role of anticoagulation.