An electronic clipboard has been developed which is simple to used and allows for the accurate timing and recording of events during a cardiac arrest. A flowsheet made of translucent 8 1/2 inches by 11 inches paper is clipped to a plastic board. Along the left margin of the flowsheet is a list of common events and therapies which should be recorded during a cardiac arrest (ie, cardiac rhythm, defibrillation, intubation, intravenous (IV) therapy, medications, etc). Across the page next to each category are columns of boxes, illuminated from below automatically by bars of light from the clipboard at one-minute intervals. Comparison of the events recorded during the first 20 minutes of cardiac resuscitatioon in an emergency department in 18 patients using the electronic clipboard method versus 18 randomly selected, matched patients with conventional recording methods demonstrated the superiority of the newer technique. More total events were recorded with the electronic clipboard (P less than 0.005), especially in the following categories: use of cardiopulmonary resuscitation Thumper, cardiac rhythm, defibrillation, sampling of arterial blood gases, IV insertion, and use of medications. The flowsheet is a superb instrument for reconstructing events for scientific analysis, legal documentation, and education.