NEET MDS

The Power Course

In Corrigan Pulse is all are true except



Choices

1 ) There is a rapid carotid upstroke
2 ) Pulse pressure is narrow.
3 ) Seen is severe aortic regurgitation
4 ) Seen is artery to venous fistulas

Explanation


Corrigan's pulse also called water-hammer pulse

Characterized rapid carotid upstroke during systole and rapid fall in pressure is during diastole.

This happens due to cardiac output with reduced resistance.

In the case of aortic regurgitation left ventricle is dilated this produces large cardiac output during systole. But in diastole, blood flows back into the low-pressure left ventricle this produces rapid fall in pressure leading Corrigan's pulse

In case the of the artery to the venous fistula, there is increased cardiac output due to hyperdynamic circulation. Diastolic pressure is decreased because the flow of blood happens to the low-pressure venous system this produces Corrigon's Pulse.

Pulse pressure means the gap between systolic and diastolic pressure.  This is increased in Corrigan's Pulse

Effectively all cause of hyperdynamic circulation can produce Corrigon's Pulse

Causes of Corrigan's Pulse are

Cardiac lesions Hyperdynamic circulatory states include Physiological etiologies include
Aortic regurgitation Thyrotoxicosis Exercise
Patent ductus arteriosus Anemia Fever
Aortopulmonary window Paget disease Pregnancy
Sinus of Valsalva rupture Liver cirrhosis  
Leaking aortic valve prosthesis Thiamine deficiency or beriberi  
A ventricular septal defect with aortic regurgitation Systolic hypertension  
Truncus arteriosus Arteriovenous fistula  
Mitral regurgitation Cor pulmonale  
Complete heart block    

 


Answer

Pulse pressure is narrow.

Last Modified : 25-Dec-2019

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