Arrhythmias - StatPearls - NCBI Bookshelf
2023年6月5日 · Any deviation from this conduction pathway results in arrhythmia. Arrhythmias can be classified based on various criteria. The most common way to categorize them is based on the rate of conduction as bradyarrhythmia with a heart rate of fewer than 60 beats per minute (bpm) and tachyarrhythmia with a heart rate higher than 100 bpm.
Overview of Arrhythmias - Overview of Arrhythmias - MSD Manual ...
Two pathways connect the same points. Pathway A has slower conduction and a shorter refractory period. Pathway B conducts normally and has a longer refractory period. I. A normal impulse arriving at 1 goes down both A and B pathways. Conduction through pathway A is slower and finds tissue at 2 already depolarized and thus refractory.
Guidelines for Cardiac Arrhythmias | Circulation: Arrhythmia and ...
2011年4月1日 · In 1990, the Institute of Medicine proposed guideline development to reduce inappropriate health care variation by assisting patient and practitioner decisions. 1 Clinical guidelines for cardiac arrhythmias, like guidelines in other disciplines of medicine, are developed by organizations primarily to assist health care providers in clinical deci...
Evaluation of Suspected Cardiac Arrhythmia - StatPearls - NCBI Bookshelf
2023年8月17日 · Outline the three main goals when approaching the patient with suspected arrhythmia. Explain how sustained low heart rates affect cardiac output and blood pressure, whether due to sinus bradycardia or AV block with rates in the 30 to 50 bpm ranges.
Pathophysiology of Cardiac Arrhythmias: Arrhythmogenesis and …
Failure of maintenance of normal sinus rhythm often results in adverse or no heart rhythm, a term referred to as “arrhythmias.” These can result in the heart rate being too fast (“tachy-”) or too slow (“brady-”) and alter blood flow resulting in patient morbidities and mortalities.
Atrial Fibrillation Pathophysiology | Circulation - AHA/ASA …
2011年11月15日 · Atrial fibrillation (AF), the most common sustained cardiac arrhythmia, is an important contributor to population morbidity and mortality. An arrhythmia that is particularly common in the elderly, AF is growing in prevalence with the aging of the population.
Arrhythmia - Cardiology Explained - NCBI Bookshelf
Measurements are usually taken from several intracardiac sites, allowing identification of sinus node function and recovery, sinoatrial conduction, AV nodal conduction, and triggered ventricular arrhythmias. Treatment is with radiofrequency stimulation, which can ablate accessory pathways or interrupt re-entry circuits.
Pathophysiology of Cardiac Arrhythmias | SpringerLink
Normal cardiac rhythm occurs when spontaneous electrical impulses generated in the sinoatrial (SA) node are transmitted via the specialized conducting pathways to working myocardium. This orderly progression of impulse formation and propagation ensures a synchronous sequence of contraction in atrial and ventricular myocardium.
Pathophysiology of Cardiac Arrhythmias: Arrhythmogenesis …
2015年1月1日 · Failure of maintenance of normal sinus rhythm often results in adverse or no heart rhythm, a term referred to as arrhythmias. These can result in the heart rate being too fast tachy or too slow...
Pathophysiology of arrhythmias: clinical electrophysiology
Arrhythmias that may be due to disorders of impulse conduction include flutter and fibrillation, atrioventricular nodal reentrant tachycardia, reciprocating tachycardias associated with an accessory pathway, sinus nodal reentry, some atrial tachycardias, and …