TEST BANK QUESTIONS AND CORRECT ANSWERS / DETAILED
RATIONALES/ GRADED A+/ LATEST VERSION UPDATE
1. What is the primary purpose of continuous telemetry monitoring in hospitalized
patients, and why is it important for early detection of arrhythmias?
Telemetry provides continuous cardiac monitoring to detect abnormal heart rhythms
early, allowing timely interventions that can prevent complications such as stroke or
cardiac arrest.
2. Which electrolyte imbalance is most commonly associated with peaked T waves on
an ECG, and what complications can result if untreated?
Hyperkalemia; if untreated, it can lead to life-threatening ventricular arrhythmias.
3. What does the P wave on an electrocardiogram represent, and how can
abnormalities indicate atrial problems?
The P wave represents atrial depolarization; abnormal P waves may indicate atrial
enlargement or conduction problems.
4. Which medication is considered first-line treatment for symptomatic bradycardia
and how does it work?
Atropine; it blocks vagal stimulation to increase heart rate.
5. What is the normal PR interval range on an ECG, and what does a prolonged
interval suggest?
0.12–0.20 seconds; prolonged PR interval may indicate first-degree heart block.
6. Which arrhythmia is characterized by a sawtooth pattern of atrial waves, and how
does it differ from atrial fibrillation?
, Atrial flutter; unlike atrial fibrillation, the rhythm is usually regular, and the atrial rate is
often around 250–350 bpm.
7. What is the main clinical concern in a patient with atrial fibrillation, and what is the
rationale for anticoagulation therapy?
The main concern is thromboembolism leading to stroke; anticoagulation reduces the risk
of clot formation in the atria.
8. Which laboratory value must be monitored closely in a patient receiving heparin
therapy, and why?
Activated partial thromboplastin time (aPTT); it ensures the dose is therapeutic without
causing bleeding.
9. Which ECG rhythm presents with no identifiable P waves and an irregularly
irregular R-R interval?
Atrial fibrillation.
10. What is the recommended positioning for a patient experiencing shortness of
breath, and why does it help?
High Fowler’s position; it promotes lung expansion and improves oxygenation.
11. What does ST-segment elevation on an ECG typically indicate, and what immediate
interventions are required?
It usually indicates an acute myocardial infarction; interventions include rapid cardiac
evaluation, oxygen, and possible reperfusion therapy.
12. What is the therapeutic INR range for most patients taking warfarin, and why is it
important to maintain this range?