<prompt> A 55-year-old woman is recently diagnosed with amyloidosis. She is now noticing increasing shortness of breath, fatigue, and edema. On examination, the JVP is at 10 cm with a negative Kussmauls sign but prominent x and y descent. The blood pressure is 9070 mm Hg, no pulsus paradoxus, pulse 100min with low volume, and normal heart sounds.For the above patient with shortness of breath and peripheral edema, select the most likely diagnosis.cardiac tamponadeconstrictive pericarditisrestrictive cardiomyopathyright ventricle myocardial infarction RVMI  <response>: The combination of absent pulsus and absent Kussmaul sign with prominent x descent favors a restrictive cardiomyopathy.Unlike constrictive pericarditis, restrictive cardiomyopathies frequently present with an enlarged heart, orthopnea, LVH, and bundle branch 