Fig. 2From: The NAPRESSIM trial: the use of low-dose, prophylactic naloxone infusion to prevent respiratory depression with intrathecally administered morphine in elective hepatobiliary surgery: a study protocol and statistical analysis plan for a randomised controlled trialData collection. Schematic diagram demonstrating the data which will be collected, and the timing of that data collection. *All observations may be collected more frequently if clinically indicatedBack to article page