A CRT (Capillary Refill Time) greater than 2 seconds indicates what?

A Capillary Refill Time (CRT) greater than 2 seconds is an indicator of inadequate peripheral perfusion, which suggests that there may be a problem with the cardiovascular system's ability to effectively circulate blood. This condition can arise from various issues, including shock, heart failure, or other forms of cardiovascular dysfunction.

When blood flow is compromised, it takes longer for the capillaries to refill after being compressed, thus extending the CRT. This delay can serve as an important clinical sign when assessing a patient's hemodynamic status. Understanding that CRT is a vital part of evaluating cardiovascular performance allows healthcare professionals to identify serious underlying conditions that may require immediate attention and treatment.

Additionally, while dehydration can also affect CRT, it is primarily associated with prolonged CRT due to its impact on overall blood volume and circulation. However, the specific reference point of a CRT greater than 2 seconds directly correlates to cardiovascular dysfunction rather than solely dehydration or other factors.