LPN Physiological Adaptation 2

Question 1

A patient with chronic kidney disease has a serum potassium of 6.2 mEq/L. Which ECG change should the LPN anticipate?

Accepted Answer

Peaked T waves

Answer

Hyperkalemia first manifests on ECG as peaked (tall, narrow) T waves before progressing to widened QRS and sine-wave pattern.

Question 2

A patient develops sudden-onset wheezing, urticaria, and hypotension after receiving IV penicillin. The priority intervention is to administer:

Accepted Answer

Epinephrine 1:1000 IM

Answer

Anaphylaxis requires immediate epinephrine 1:1000 IM (usually in the thigh) as the first-line life-saving intervention.

Question 3

Which assessment finding in a patient with liver cirrhosis indicates hepatic encephalopathy?

Accepted Answer

Asterixis (flapping tremor)

Answer

Asterixis, a flapping hand tremor elicited by wrist extension, is a hallmark neurological sign of hepatic encephalopathy due to ammonia accumulation.

Question 4

A patient with COPD is receiving oxygen therapy. The LPN should maintain SpO2 at which target range to avoid suppressing hypoxic drive?

Accepted Answer

88–92%

Answer

COPD patients rely on hypoxic drive; target SpO2 of 88–92% provides adequate oxygenation without eliminating the hypoxic stimulus to breathe.

Question 5

A post-operative patient reports sudden pleuritic chest pain and shortness of breath. The LPN notes tachycardia and decreased breath sounds on the right. These findings most suggest:

Accepted Answer

Pulmonary embolism

Answer

Sudden pleuritic chest pain, dyspnea, tachycardia, and decreased breath sounds in a post-op patient are classic signs of pulmonary embolism.

(LPN) Certified Practical Nurse Practice Test

(LPN) Certified Practical Nurse Practice Test

LPN Physiological Adaptation 2