During examination of a patient's extremities, you press firmly for a brief period on a fingernail
You observe that it takes approximately 5 sec for the color to return to the nail bed. This finding is most consistent with which of the following?
a. Reduction in cardiac output or poor pe-ripheral perfusion
b. Presence of a disorder causing chronic hypoxemia
c. Reduction in venous return to the right side of the heart
d. Presence of a disorder causing systemic hypertension
ANS: A
When cardiac output is reduced and digital perfusion is poor, capillary refill is slow, taking sev-eral seconds to complete. In healthy individuals with good cardiac output and digital perfusion, capillary refill time is less than 3 sec.
You might also like to view...
Coloring and flavoring actually have a therapeutic benefit
Indicate whether the statement is true or false
Stirring rods or paddles are utilized during darkroom processing for which purpose?
mixing the developer and fixer agitating the rinse obtaining uniform concentration throughout the solutions The stirring rods and paddles can be utilized for any of the above items.