Question

If the systolic pressure, is 120 mm Hg and diastolic pressure is 80 mm Hg, the pulse pressure is
A. $120 - 80= 40mmHg$
B. $\dfrac{120}{80} =1.3mmHg$
C. $120 \times 80 =9600mmHg$
D. $120+80= 200mmHg$

Answer 1

Hint: As in case of heart generally three types of pressure are numerically calculated. As the cardiac cycle is going on so two types of the stage occur i.e. systole and diastole. So from these in systole pressure is termed as systolic pressure and in diastole, it is the diastolic pressure. The pulse pressure is the difference between systolic and diastolic pressure.

Complete answer:
Pulse pressure is defined as simply the difference between the systolic and diastolic blood pressures.
Pulse Pressure = systolic pressure level – diastolic pressure level
The pulse pressure level is outlined because the most pressure is held within the arterial blood vessel once the guts contract and ejects blood into the arterial blood vessel from the ventricle (approximately a hundred and twenty mmHg). The beat pressure level is that the minimum pressure holds within the arterial blood vessel once the guts are reposeful before ejecting blood into the arterial blood vessel from the ventricle (approximately eighty mmHg). traditional pulse pressure is, therefore, roughly forty mmHg. A modification in pulse pressure ($\Delta Pp$) is directly proportional to volume modification (delta-V) however inversely proportional to blood vessel compliance (C):
$\Delta Pp =\dfrac{\Delta V}{C}$
Because the modification in volume is thanks to the stroke volume of blood ejected from the ventricles only. In case of a normal young adult at rest includes a stroke volume of roughly eighty millilitres. blood vessel compliance is roughly two mL/mm Hg, that confirms that standard pulse pressure is roughly 40 mm Hg. Arterial compliance is up to the modification in volume (Delta V) over a given modification in pressure (Delta P) is termed as
$C = \dfrac{\Delta V}{\Delta P}$
Because the arterial blood vessel is the most compliant portion of the human blood vessel system, the heartbeat pressure is the lowest. Compliance more and more decreases till it reaches a minimum within the limb and saphenous arteries, then it begins to extend once more. This idea needs an associated understanding of the result of pressure wave reflection on amplification of arterial blood vessel pressure and therefore pulse pressure. The development eventually happens within the lower one body, particularly the lower one extremities wherever pressure waves mirror back for only the vessel branching, and also the vessels square measure less compliant (stiffer) once a mirrored wave is in part with a forward wave, it generates a wave-like thing with higher amplitude also. associatealogy here is waves bouncing off a barrier and interacting with an incoming wave. If they're in part, the wave height is larger and is represented as the same.
A pulse pressure that's but twenty-fifths of the blood pressure is not suitably low or narrowed, whereas a pulse pressure of larger than a hundred is high or widened just for a calculation.

So, option (A) is the correct answer.

Note:
We also derive the correct answer simply because pulse pressure is the difference between the systolic pressure and diastolic pressure. So it is just a simple calculation. The term pulse is implied that the net pressure is gained by the heart from completion of one cardiac cycle that means after systole and diastole.