Cardiology>>>>>Valvular heart disease and Endocarditis
Question 4#

An 82-year-old retired solicitor presents to the ED with chest pain radiating to his jaw. He has hypertension treated with ramipril 5 mg bd but is otherwise normally fit and well. His admission ECG shows atrial fibrillation with a ventricular rate of 90 bpm, LVH, and widespread ST segment depression. His peak troponin is 110 ng/L (normal <30 ng/L). He is started on treatment for an acute coronary syndrome and listed for an inpatient angiogram. You are asked to perform a bedside echocardiogram as a systolic murmur is heard on the post-take ward round. Calculate the aortic valve area (using the continuity equation) from the following pics

A. 0.76 cm²
B. 0.80 cm²
C. 0.92 cm²
D. 1.02 cm²
E. 1.08 cm²

Correct Answer is B

Comment:

CSA_AV = CSA_LVOT × VTI_LVOT/VTI_AV

CSA_LVOT = 0.785(2.48²)

CSA_AV = 4.82 × 11.61/70.22

CSA_AV = 0.798 cm²  = 0.8 cm²