NURSING ANM AND GNM

Detailed explanation-1: -A CRT longer than 2 seconds suggests poor perfusion due to peripheral vasoconstriction. Peripheral vasoconstriction is an appropriate response to low circulating blood volume and reduced oxygen delivery to vital tissues.

Detailed explanation-2: -Interpretation of Results A CRT> 2 seconds or prolonged CRT is suggestive of an early sign of shock. Several other factors can affect the CRT measurement and therefore its results. They may include: Peripheral vascular disease. Hypothermia.

Detailed explanation-3: -If the foot or chest is used for assessment, CRTs of 4 seconds or less should be considered normal. CRTs in neonates (up to 7 days of age) may be longer than in older infants and children, with the upper limit of normal ranging from 5–7 seconds.

Detailed explanation-4: -A capillary refill time of three seconds or more should be considered abnormal. The results show that an abnormal CRT of 3 seconds or more increases the likelihood of a serious outcome including death and dehydration – however a normal CRT does not make a serious outcome less likely.