A 35-year-old woman is being evaluated due to recent exertional dyspnea and fatigue. She has no prior medical condition and has a sedentary lifestyle. She feels a retrosternal pain accompined with shortenss of breath during exercise. An EKG shows no significant findings. A heart cathetrization is planned. During the procedure, the catheter records periodic pressure changes with a maximum of 25 mm Hg and minimum of 2 mm Hg. The catheter is advanced further, and then shows periodic pressure changes with a maximum of 25 mm Hg and a minimum of 10 mm Hg. Assuming the results of the procedure are normal, the first set of readings was most likely obtained from which of the following locations?

Question

A 35-year-old woman is being evaluated due to recent exertional dyspnea and fatigue. She has no prior medical condition and has a sedentary lifestyle. She feels a retrosternal pain accompined with shortenss of breath during exercise. An EKG shows no significant findings. A heart cathetrization is planned. During the procedure, the catheter records periodic pressure changes with a maximum of 25 mm Hg and minimum of 2 mm Hg.  The catheter is advanced further, and then shows periodic pressure changes with a maximum of 25 mm Hg and a minimum of 10 mm Hg.  Assuming the results of the procedure are normal, the first set of readings was most likely obtained from which of the following locations?

Quizplus · Accepted Answer

Eductional Objective: The pressure differences between right and left heart sided due to lower resistance in the pulmonary vasculature. Right ventricular diastolic pressure is similar to right atrial/central venous pressure (1-6 mm Hg), whereas pulmonary artery diastolic pressure is slightly higher (6-12 mm Hg) due to resistance to flow in the pulmonary circulation.

A 35-Year-Old Woman Is Being Evaluated Due to Recent Exertional