Page 118 - AACN Essentials of Critical-Care Nursing Pocket Handbook, Second Edition
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Corrective Action Remove unnecessary tubing and stopcocks. Add a damping device.
Clinical Effect Produces a falsely high systolic and low diastolic value.
Assessing Damping Concepts From Square Wave Test (continued)
Underdamped system. The waveform is characterized by numerous amplified oscilla- tions above and below the baseline following the fast flush. The monitored pressure wave displays falsely high systolic pressure (overshoot), possibly falsely low d
Square Wave Test system. Use large bore, shorter tubing, or a damping device. (Reprinted from Vanriper S, Vanriper J. Fluid-filled monitoring systems. In: Darovic GO, ed. Hemodynamic Monitoring: Invasive and Noninvasive Clini- cal Application.
Underdamped Observed waveform Darovic GO, Used with permission from Elsevier.)
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