…As the valve area becomes smaller, the transvalvular resistance increases, making it more difficult to eject blood into the aorta. In the early stages of…

…by advancing guidewires and diagnostic catheters from a percutaneous arterial access site to the aortic root, engaging the coronary ostia, and acquiring multiple angiographic projections…

…). Afterload Afterload is the resistance that the left ventricle must overcome to eject blood into the aorta. Afterload affects myocardial muscle fibers during systole and…

…methods may also contribute. The cardioprotective effect is therefore likely to result from the cumulative influence of multiple modest dietary changes. Mediterranean type diets provide…

…depends almost entirely on the capacity to identify, prospectively, those individuals genuinely at risk of arrest. This predictive problem has proven persistently resistant to resolution…

…than the right ventricle. This is the result of ventricular adaptation to the resistance that must be overcome by the ventricles. The left ventricle must…

…than the right ventricle. This is the result of ventricular adaptation to the resistance that must be overcome by the ventricles. The left ventricle must…

…referred to a specialized centre because the work up may require expertise and technologies unavailable in primary care. Before investigating secondary causes, pseudo resistance must…

…the right atrium is commonly a consequence of increased resistance to empty blood into the right ventricle. This may be due to pulmonary valve stenosis…

…resistance and oxygen transport Formulas Mean arterial pressure (MAP) = diastolic + (systolic − diastolic)/3 Cardiac output = stroke volume × heart rate SVR = 80 × (MAP…