A nurse is assessing a client following a colonoscopy. Which of the following findings indicates a possible complication of the procedure?

A. Abdominal cramping: Mild abdominal cramping is common after a colonoscopy due to air insufflation during the procedure. This symptom is typically transient and not indicative of a serious complication. B. Light-headedness: Light-headedness may indicate bleeding, hypotension, or hypovolemia, which are potential complications following a colonoscopy. This symptom requires prompt assessment to rule out internal bleeding or other serious adverse events. C. Increased flatus: Passing gas is expected after colonoscopy because of residual air introduced during the procedure. This finding is a normal part of recovery and does not signal a complication. D. Feeling of fullness: A sensation of fullness is common post-procedure and usually results from retained air or mild distention. It typically resolves spontaneously and is not considered a complication.