2026 Questions and Correct Detailed Answers
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Acute Coronary Syndrome (ACS): any group of clinical symptoms resulting from
acute myocardial ischemia. - CORRECT ANSWER-begins with the rupture of
atherosclerotic plaque, creating an injured area on the endothelium.
platelet activation of the coagulation cascade and the formation of a thrombus
over the injured area ensues - CORRECT ANSWER-restricted blood flow,
cardiac ischemia and chest pain, the most common symptom of ACS.
ACS is divided into three categories: - CORRECT ANSWER-unstable angina
(USA)
Non ST segment elevation MI (NSTEMI)
ST segment elevation MI (STEMI).
A first-degree AV block occurs when there is a conduction delay between -
CORRECT ANSWER-the sinoatrial node and ventricles. most commonly in the
AV node,
intra arterial or in the His-Purkinje relay system.
,PR interval, >0.20 seconds.
Medication
calcium channel blockers
beta-blockers
digoxin
2nd degree AVB Type I, Mobitz Type I, Wenckebach occurs when - CORRECT
ANSWER-PR interval gradually lengthens
P wave fails to conduct to the AV dropped QRS complex.
Typically asymptomatic.
If decreased CO, a permanent pacemaker.
Monitor closely for progression to worse block.
Causes of Type I 2nd degree AVB - CORRECT ANSWER-Recent inferior wall MI
Excess vagal tone.
Medication
calcium channel blockers
beta-blockers
digoxin
, amiodarone
Type II 2nd degree AVB, Mobitz Type II occurs when conduction between SA node
and AV node is - CORRECT ANSWER-blocked without warning
dropped QRS complex.
regular R-R interval preceding a P wave with no QRS complex.
If the patient is symptomatic temporary pacing should be considered.
Monitor closely for development of third degree heart block.
Third degree heart block occurs when there is no conduction between the SA and
the AV nodes. - CORRECT ANSWER-The P to P intervals are regular, as are the
QRS to QRS intervals.
No correlation between the P waves and the QRS complexes.
Ventricular rate drops to 20-40 bpm. S/S syncope, chest pain, dizziness, and AMS.
Temporary pacing
Permanent pacemaker will be required if the complete heart block continues to
occur
unstable angina (USA) - CORRECT ANSWER-no rise in cardiac biomarkers. If
there is a decrease in left ventricular function secondary to cardiac ischemia, it
returns to normal after the ischemia has resolved.