Chronic systemic hypertension results in increased afterload (“pressure load”) o

Question

Chronic systemic hypertension results in increased afterload (“pressure load”) on the left ventricle of the heart, affecting the pressure-volume relationship of the left ventricle. What effect does this have on the normal electrical and/or pressure events of the cardiac cycle? In your answer, you should include terms and processes such as right atrium, tricuspid valve, right ventricle, pulmonary valve, pulmonary circulation, left atrium, bicuspid valve, left ventricle, aortic valve, systemic circulation, systole, diastole, ventricular systole/diastole, atrial systole/diastole, passive ventricular filling, “atrial kick,” isovolumic ventricular contraction, ventricular ejection, isovolumic relaxation, stroke volume, preload, afterload, pressure-volume loop, and physiologic vs. pathogenic cardiac hypertrophy. ANSWER VERY THOROUGHLY PLEASE

Explanation / Answer

When blood pressure is increased there is increase in pressure of flow of blood from right atrium which forces tricuspid valve to open with increased pressure.

Due to increased pressure the flow of blood through pulmonary valve is increased.

The time period of 1 cardiac cycle is decreased. The processes taking place while pulmonary circulation are fasten up.

The systolic pressure and diastolic pressures are increased.

The volume of ventricular ejection is also increased due to increased blood pressure.

The stroke volume is also increased due to increase in cardiac output.

The physiologic hypertrophy is due to increase in mental stress,tension, exercise,etc whereas pathogenic hypertrophy is due to diseases like diabetes, sensitivity to allergens,etc.

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