ANATOMY

GENERAL ANATOMY

ANATOMY OF THE HEART

Question [CLICK ON ANY CHOICE TO KNOW THE RIGHT ANSWER]
The average pressure in the right ventricle is ____ the pressure in the left ventricle.
A
the same as
B
considerably lower than
C
slightly higher than
D
much higher than
Explanation: 

Detailed explanation-1: -For the right ventricle, systolic pressure is normally 25 to 30 mm Hg, with end-diastolic pressures of 5 to 7 mm Hg. The systolic pressure in the left ventricle increases with age and should equal the systolic arterial pressure. The end-diastolic pressure is typically less than 10 mm Hg.

Detailed explanation-2: -Normally the pressure on the right side of the heart and in the pulmonary arteries is lower than the pressure on the left side of the heart and in the aorta. This is because: the right side of the heart pumps blue (deoxygenated – little or no oxygen) blood returning from the body back to the lungs.

Detailed explanation-3: -Normally, maximum chamber compliance is substantially higher for the right ventricle because it is thin-walled; since for a given chamber volume a lower filling pressure is required than for the LV, Pf at maximum CC is considerably lower in the right than the left ventricle.

Detailed explanation-4: -In normal, resting, supine man the ventricular function curve is at its peak at a left ventricular end-diastolic pressure of approximately 10 mm Hg.

Detailed explanation-5: -Normal RV systolic pressure is 20–30 mmHg and normal diastolic pressure is 3–7 mmHg (Table 2). The RV waveform has a rapid upstroke and downstroke during systole.

There is 1 question to complete.