1. How do you elicit capillary pulsation (Quincke's sign)?
ANS: Compress the skin of the face or hands with a glass slide, or exert slight pressure on the nail beds and watch for intermittent flushing. You can also transilluminate the nail bed with a flashlight against the pad of the patient's finger while shading the finger with the other hand.
2. What is the mechanism of capillary pulsations and what noncardiac conditions can cause it?
ANS: The mechanism is the transmission of the arterial pulse through dilated capillaries to the subpapillary venous plexus. It is found in any condition that causes capillary dilatation, such as hot weather, a hot bath, fever, anemia, pregnancy, or hyperthyroidism.
3. Which cardiac conditions cause capillary pulsation?
ANS: Any cardiac condition that causes a large pulse pressure, such as AR, systolic hypertension, or marked-bradycardia, as in complete atrioventricular block.
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Your heart pumps blood throughout your body using a network of tubing called arteries and capillaries which return the blood back to your heart via your veins. Blood pressure is the force of the blood pushing against the walls of your arteries as your heart beats.Learn more...