A 45-year-old immigrant from sub-Saharan Africa is admitted to the hospital with several months of shortness of breath, abdominal distension, and pitting lower extremity edema. On physical examination, the jugular venous pressure is estimated at 15 cm above the angle of the sternum and the pressure increases during respiration. A blowing, holosystolic murmur is heard best along the lower left sternal border. What condition is this patient most likely suffering from? Aortic stenosis. Pulmonic stenosis. Constrictive pericarditis. Restrictive cardiomyopathy. Mitral regurgitation.