Guide 2026|2027 Questions With
Correct Verified Answers A+ Rated
Dark line method - Correct Answer -heart rate determination method that can
only be used when the heart rate is regular. This method can be a very accurate
way to determine heart rate or to generate a close estimate
1500 method - Correct Answer -Count number of small squares between two
consecutive R-waves and divide that number by 1500, it is the most accurate
method of obtaining the heart rate but can only be used on regular rhythms.
6 second method - Correct Answer -The number of QRS Complexes between 6
sec marks on the EKG paper is multiplied by 10. Used generally for estimating
slow or irregular rhythms.
atrioventricular valves - Correct Answer -Valves located between the atrial and
ventricular chambers on each side of the heart, prevent backflow into the atria
when the ventricles are contracting.
,semilunar valves - Correct Answer -pulmonary and aortic valves located
between the right ventricle and the pulmonary artery and between the left
ventricle and the aorta
Hexaxial Reference System - Correct Answer -The system of intersecting lines of
the standard limb leads and three other intersecting lines of reference: I, II, III,
aVR, aVL, and aVF leads.
Normal is 0-90
Two-Lead method of axis determination - Correct Answer -Lead I and aVF
Right Bundle Branch Block - Correct Answer --QRS >0.12 seconds
-RSR pattern with final R in V1(bunny ear)
-QRS pattern with final wide S in V6
-Right chest lead will show T wave inversion
-Complete RBBB, QRS >0.12
-Incomplete RBBB, QRS is 0.10 to 0.12 seconds
Left Bundle Branch Block - Correct Answer --QR pattern
-QRS> 0.12 seconds in V1
,-Wide tall R wave in V6
V1: Dominant S waveV
6: broad, notched ('M'-shaped) R wave
-Septal depolarization is right to left
Digitalis Effect at normal Therapeutic levels - Correct Answer -*Increases
contractility*
-shortened ventricular depolarization and repolarization time
-shortened QT interval
-scooping of the ST-T complex
-Flat, inverted, or biphasic T waves
Einthoven's triangle - Correct Answer -the leads between the three limb
electrodes "standard lead I, II and III" referring to the two arm electrodes and
the left leg electrode.
Epicardium - Correct Answer -Serous membrane that makes up the outer surface
of the heart
Captopril (capoten) - Correct Answer -First ACE inhibitor approved for use in the
US
, -HTN tx
What is the normal pressure of the Right Atria? - Correct Answer -6 mmHg
What is the normal pulmonary artery pressure? - Correct Answer -25/8 mmHg
Positive inotropic agents often: - Correct Answer -block calcium entry
Which is not a source of peripheral resistance?
volume
turbulence
vascular tone
viscosity - Correct Answer -volume
Which of the following will respond to changes in oxygen levels, blood pH and
cerebrospinal fluid?
chemoreceptros
carotid sinuses