Physical Examination and Health Assessment 9th Edition Test Bank

Correct Answer: B

Rationale: Atrial flutter is a cardiac arrhythmia characterized by rapid, regular atrial contractions at a rate of around 250-350 beats per minute. This can lead to a ventricular response rate that is usually around 150 beats per minute, resulting in a fast heart rate. The ECG pattern in atrial flutter typically shows a sawtooth pattern of flutter waves, which distinguishes it from other arrhythmias. In contrast, second-degree A-V block, sinus arrhythmia, and atrial fibrillation would not typically present with the rapid regular atrial contractions seen in atrial flutter.

Correct Answer: D

Rationale: Chronic arterial insufficiency results in poor blood flow to the lower extremities. This leads to inadequate oxygen and nutrient supply to the tissues, causing damage and changes in the skin. A common physical examination finding in chronic arterial insufficiency is thin, shiny, atrophic skin. The skin may appear pale, cool to the touch, and may have decreased hair growth. It is important to note that other findings such as diminished or absent pulses and reduced temperatures may also be present with chronic arterial insufficiency.

Correct Answer: D

Rationale: The patient in this scenario presents with symptoms suggestive of an anorectal disorder. The presence of an irregular, firm mass on the posterior side of the rectum, along with frank blood seen on the glove after a digital rectal examination, raises suspicion for an underlying anorectal cancer. Anorectal cancer can present with symptoms such as rectal bleeding, changes in bowel habits, palpable masses, and weight loss. In this case, the findings of an irregular mass and rectal bleeding are concerning for a malignant process such as anorectal cancer. Further evaluation with imaging studies and biopsy would be warranted for confirmation and to guide appropriate management.

Correct Answer: A

Rationale: Inspiratory splitting of S occurs due to the normal physiological delay in the closure of the aortic and pulmonic valves during inspiration. During inspiration, the negative intrathoracic pressure leads to increased venous return to the right side of the heart, causing a slight delay in the closure of the pulmonic valve. This results in the aortic valve closing first, followed by the closure of the pulmonic valve, leading to the splitting of S during inspiration.

Correct Answer: C

Rationale: The most likely explanation for Mrs. Lenzo noticing a 4-pound weight gain over just 2 days is fluctuations in body fluid. Our body weight can fluctuate throughout the day due to factors such as hydration levels, sodium intake, and hormonal changes. It is not physically possible to gain 4 pounds of actual body mass (e.g., fat or muscle) in such a short period of time by overeating or wearing different clothing. Additionally, if Mrs. Lenzo's scale is very accurate as mentioned, it is less likely that the weight gain is due to instrument inaccuracy. Therefore, the most plausible reason for the sudden weight gain is fluctuations in body fluid retention.