Diastolic pressure, Biology

Assignment Help:

Palpate the radial or brachial artery pulsation while inflating the cuff to a level of 30 mm Hg above the point at which the brachial or radial artery pulsation disappears. Reinflate the cuff to this pressure and release the pressure (deflate) slowly and steadily at a rate of  2 mmHg/sec. The cuff is deflated fast after the diastolic pressure is recorded. A gap of at least one minute must be given in case the pressure is rerecorded.

What one listens to with the stethoscope are the Korotkoff sounds:

Phase 1 : The first appearance of clear tapping sound. This represents the systolic pressure
Phase 2 : Soft murmurs
Phase 3 : Louder murmurs
Phase 4 : Muffled sounds
Phase 5 : Disappearance of sounds

At what point is the diastolic pressure recorded? Comparative studies with intra arterial measurement shows that it corresponds to Phase 4. However, the diastolic is taken just before disappearance of Phase 5.

What are the conditions where Korotkoff sounds are difficult to hear?  In slow rising pulse of aortic stenosis, shock and in heart failure, it might be difficult to hear these sounds. It helps to ask the patient to clench and unclench the fist 5 or 6 times and listen again.

What is the auscultatory gap? This occurs when after the first appearance of the Kortkoff sound, it disappears, then reappears at a lower pressure. For this reason, it is better that the systolic pressure is noted by the palpation of the disappearance of the radial pulse. The cuff pressure must be raised to a point above this before one starts listening to the Korotkoff sounds. When BP is recorded for the first time, it should be done in both arms. A difference of more than 10 mmHg should raise the suspicion of obstructive lesions in the arterial supply to the upper limb.


Related Discussions:- Diastolic pressure

Define essentiality of carbon for growth of micro-organism, Define the Esse...

Define the Essentiality of Carbon for the Growth of Microorganisms Carbon is needed for the skeleton of all organic molecules. Microorganisms acquire it either as inorganic car

Locomotion, discuss locomotion in annelids

discuss locomotion in annelids

Accumulation of phenylalanine, Accumulation of phenylalanine and its catabo...

Accumulation of phenylalanine and its catabolic products leads to central nervous system damage. The extent of damage caused to the brain depends on the time at which the insult oc

Metamorphosis, ME T AMORPHOSIS The differentiation results in the for...

ME T AMORPHOSIS The differentiation results in the formation of larva / infant. The formation of adult from the larva / infant is called as metamorphosis. The metamorph

Subatomic Particles, We have end of semester exams coming up meaning that a...

We have end of semester exams coming up meaning that a majority of it will be over subatomic particles

Echocardiography, Echocardiography: LV hypertrophy can be identified using ...

Echocardiography: LV hypertrophy can be identified using M-Mode and 2 D imaging. Indications of myocardial ischemic states and systolic functions can be assessed by studying region

Define stress factors - etiological risk factors in cancer, Define Stress F...

Define Stress Factors - Etiological Risk Factors in Cancer? Emotions playing a part in malignancy are not a new idea. But these relationships are extremely difficult to measure

Define iron requirements of school children and adolescents, Define Iron re...

Define Iron requirements of school children and adolescents? The iron requirements are also computed by factorial method and should therefore add iron requirement of maintenanc

Polarity - root and shoot morphogenesis, Polarity - Root and Shoot Morphoge...

Polarity - Root and Shoot Morphogenesis Polarity is defined as having a difference (morphological, physiological or both) between the two ends of an axis or cells. This is lar

Write Your Message!

Captcha
Free Assignment Quote

Assured A++ Grade

Get guaranteed satisfaction & time on delivery in every assignment order you paid with us! We ensure premium quality solution document along with free turntin report!

All rights reserved! Copyrights ©2019-2020 ExpertsMind IT Educational Pvt Ltd