RCES exam Exam Questions and Answers with Verified Solutions | Latest Updated 2026

RCES exam Exam Questions and Answers
with Verified Solutions | Latest Updated 2026



PR interval 120 - 200 ms



QRS interval < 100 ms



QT interval < 400 ms



QTc interval Measure of time between start of Q wave
and end
of T wave in cardiac cycle


QTc interval (men) < 450 ms



QTc interval (women) < 470 ms



Basic Cycle Length (BCL) 1000 - 600 ms aka 60-100 bpm



PA interval 25 - 55 ms



AH interval 55 - 125 ms



HBE interval < 30 ms

, HV interval 35 - 55 ms



QRS interval < 100 ms



Triangle of Koch defined by the following structures within
the right
atrium: (1) The ostium of the coronary
sinus,
posteriorly; (2) the anterior-septal leaflet
commissure; and (3) the tendon of Todaro
(a
tendinous structure connecting the valve of
the
inferior vena cava ostium to the central
fibrous
body), posteriorly.


Thesbian valve a fold located at the ostium of the CS



most posterior part of the heart left atrium



crista terminalis seperates the trabeculated muscle from
the
smooth muscle in the right atrium


Mobitz Type I (Wenckebach) progressive lengthening of PR interval until
a beat
is 'dropped' (P wave not followed by a
QRS
complex) usually asymptomatic