Which of the following is NOT a value used in the Child-Pugh classification for cirrhosis staging?

The Child-Pugh classification is a scoring system used to assess the severity of liver disease and to guide treatment decisions in patients with cirrhosis. It incorporates several clinical and laboratory parameters that reflect liver function and the presence of complications associated with liver dysfunction.

The parameters included in the Child-Pugh classification are total bilirubin, serum albumin, prothrombin time (represented by the International Normalized Ratio, or INR), and the presence of ascites and hepatic encephalopathy. These values help determine the prognosis and assist in assessing the severity of liver impairment.

Blood pressure is not one of the parameters used in the Child-Pugh classification. While blood pressure can be relevant in the context of various medical conditions, and monitoring vital signs is important in assessing a patient's overall health, it does not directly measure liver function or the complications associated with cirrhosis. Thus, it is correctly identified as the value that is not included in the Child-Pugh classification.