Final answer:
The recommended method for determining left ventricular volumes by two-dimensional echocardiography is the Single plane area-length method, which measures volumes like the EDV and ESV important for cardiac function assessment.
Step-by-step explanation:
The recommended method for determining left ventricular volumes by two-dimensional echocardiography is B. Single plane area-length. This method is used to measure the volumes of the left ventricle, which include the end diastolic volume (EDV) and the end systolic volume (ESV). EDV is the amount of blood in the ventricles at the end of atrial systole just prior to ventricular contraction, and ESV is the amount of blood remaining in each ventricle following systole. Stroke volume (SV) is an important calculation derived from these measurements and is defined as SV = EDV - ESV. Determining these volumes is crucial for assessing cardiac function and health.