Figure 32-7 Overdamped arterial pressure waveform. The overdamped pressure waveform (A) shows a diminished pulse pressure when compared with the normal waveform (B). The slow-speed recording below demonstrates a 3-minute period of damped arterial pressure. Despite the damped pressure waveform, mean arterial pressure remains unchanged during this period. (Redrawn from Mark JB: Atlas of Cardiovascular Monitoring. New York, Churchill Livingstone, 1998, Fig. 9-3.)