Cardiac Cycle Flashcards
What valvular event corresponds to atrial depolarization? What Sounds do you hear?
Mitral Opening
S3, S4
What valvular event corresponds to Ventricular depolarization? What Sounds do you hear?
Mitral Closing
S1
What valvular event corresponds to Ventricular Repolarization? What Sounds do you hear?
Aortic Closure
S2
S3 is more common in?
Dilated ventricles and mitral regurgitation
S4 is more common in?
Stiff ventricles
What does the a wave correspond to?
Atrial contraction
What does the c wave correspond to?
RV contraction
What does the X descent correspond to?
atrial relaXation
What does the v wave correspond to?
Villing of the Right atrium
What does the y descent correspond to?
RA emptYing
U wave is caused by?
Hypokalemia and bradycardia
Speed of conduction?
Purkinje>atria>ventricles>AV nodes
Which drugs induce Long QT?
AntiArrhythmics (class IA, III)
AntiBiotics (e.g., macrolides)
Anti“C”ychotics (e.g., haloperidol) AntiDepressants (e.g., TCAs)
AntiEmetics (e.g., ondansetron)
RBBB+ST elevations in an Asian male?
Brugada Syndrome
Delta waves are associated with?
WPW
