Rces arrhythmias exam - Study guides, Class notes & Summaries

RCES Actual Exam Questions with Complete Solutions What ionic flows occur across the cardiac muscle cell membrane during the plateau (phase 2) of the action potential? - ANSWER Ca++ enters, K+ exits What is the response of cardiac tissues paced during the relative refractory period (RRP)? Compared to fully depolarized cells, stimulation in the RRP ______ - ANSWER require higher mA but creates a weaker contraction What is required to sustain a reentry circuit? - ANSW...

RCES FML Exam Questions and Answers All Correct The plateau (phase 2) of the ventricular action potential occurs on the surface ECG during the ___________ and during mechanical ___________ - ANSWER -QT interval -systole what phase does the QRS occur within the ventricular action potential? - ANSWER phase 0 what ionic flows occur across the cardiac muscle cell membrane during the resting phase (phase 4) of the action potential? - ANSWER ca++ exits k+ enters the...

RCES Exam Questions and Correct Answers Catecholaminergic polymorphic ventricular tachycardia/fibrillation (CPVF) is .....? - ANSWER (also known as familial polymorphic VT) is a rare and highly arrhythmogenic INHERITED channelopathy. It is characterized as exercise-induced polymorphic VF in a structurally normal heart. The genetic mutation specifically affects the calcium RyR2 gene, which is responsible for calcium release (contraction). Triggered:DELAYED AFTERDEPOLARIZATION (DAD) caus...

RCES Arrhythmias Exam Questions with All Correct Answers PVC complexes are distinguished from simple supraventricular QRS complexes in that in PVCs the QRS complexes ________ and the T waves are usually ________. - ANSWER Board and bizarre in shape and the T waves are larges and in an opposite direction. -The QRS is not preceded by a premature P wave. Long QT syndrome is associated with: - ANSWER Torsades de pointes. -An EAD-induced extra systole {after depolarization} is b...