17 Questions
What is the correct sequence of steps to measure pulsus paradoxus using auscultatory method?
Inflate the cuff past the point of no sounds, slowly deflate until sounds are heard intermittently, then deflate until sounds are heard with every heartbeat
What is the significance of a difference >10 mmHg in pulsus paradoxus measurement?
It is considered a significant indicator of pulsus paradoxus
What is the reason for taking the pulse for a full minute?
To identify irregularities in the heart rhythm
What is the term for a repeating pattern of irregular beats?
Regular irregularity
What may be recommended by the nurse or RCP if irregularities are suspected?
Ordering an EKG
What is the term for the interruption in the transmission of electrical impulses through the heart's conducting system?
Heart block
What is the correct definition of pulsus paradoxus?
A difference in blood pressure between inspiration and expiration
What is the significance of skipped beats or extra beats in the heart rhythm?
They are a sign of irregularities in the heart rhythm
What is the purpose of deflating the cuff until sounds are heard intermittently during pulsus paradoxus measurement?
To measure the highest systemic blood pressure during expiration
What is the effect of increased venous return on the right ventricle during inspiration?
It distends
What is the effect of increased blood volume pooling in the expanded lungs on the left atrium and ventricle?
It decreases blood return
What is the result of the interventricular septum bulging into the left ventricle during inspiration?
It decreases left ventricular stroke volume
What is the minimum inspiratory systolic BP drop required for pulsus paradoxus to occur in respiratory conditions?
> 10 mmHg
What is the method to quantify pulsus paradoxus?
Blood pressure measurement
What is the condition in which the drop in pulse rate and strength can be grossly assessed by radial artery palpation?
Severe asthma
What is the name of the doctor who discovered the correlation between radial artery palpation and pulsus paradoxus?
Dr. Kussmaul
What is the unit of measurement for the amplitude of pulsus paradoxus in the figure?
mmHg
Test your understanding of how changes in intrathoracic pressure during spontaneous breathing affect the heart and great vessels. Learn how inspiration impacts ventricular function and blood flow. Evaluate your knowledge of cardiovascular physiology and its mechanisms.
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