A 55-year-old smoker complains of chest pain and gestures with a closed fist over her sternum to describe it. Which of the following diagnoses should you consider because of her gesture?

Correct Answer: D

Rationale: The closed fist gesture over the sternum to describe chest pain is a typical characteristic of angina pectoris. Angina pectoris is chest pain or discomfort that occurs when the heart muscle does not receive enough oxygen-rich blood. The gesture of clenching a fist over the sternum is often used to describe the tight, squeezing, or pressure-like discomfort experienced with angina. This type of chest pain is typically triggered by physical or emotional stress and is relieved by rest or medications like nitroglycerin. Considering the patient's age, smoking history, and the description of the chest pain gesture, angina pectoris should be a top consideration in this case.

Correct Answer: B

Rationale: Leaning forward in the upright position increases venous return and systemic vascular resistance, which can help accentuate the intensity of aortic regurgitation murmur. This position helps to bring the heart closer to the chest wall, making the murmur easier to auscultate and potentially increasing its intensity.

Correct Answer: C

Rationale: The target heart rate during physical activity is typically calculated as a percentage of maximum heart rate, which is estimated using the formula: 220 - age. For a 30-year-old individual, the estimated maximum heart rate would be 190 beats per minute. Exercising at 60-70% of the maximum heart rate is usually recommended for moderate-intensity physical activity. For this individual, the target heart rate zone would be approximately 114-133 beats per minute. Therefore, achieving a heart rate of 120 beats per minute would fall within the target range and indicate an appropriate level of exertion for effective physical activity.

Correct Answer: D

Rationale: The scenario described with a strong pulse followed by a weak pulse is characteristic of pulsus paradoxus, a finding often associated with cardiac tamponade. Cardiac tamponade is a medical emergency where there is an accumulation of fluid (such as blood) in the pericardial sac that exerts pressure on the heart, limiting its ability to pump effectively. As a result, patients may exhibit this pulsus paradoxus, where the pulse strength varies with respiration. The other conditions listed (emphysema, asthma exacerbation, severe left heart failure) are not typically associated with this specific pulsatile pattern.

Correct Answer: B

Rationale: Even after a unilateral mastectomy, women should continue to self-examine and have regular clinical examinations for any signs of recurrence or new masses. It is important to closely monitor the surgical scar area for any changes or abnormalities, as breast cancer can still occur in the remaining breast tissue. Regular breast examinations remain important in the early detection of any potential issues, even after mastectomy.