Effects of mechanical ventilation on hemodynamic waveforms.
Interpreting hemodynamic waveforms in the critically ill patient requires an understanding of the influence of breathing on waveform values. Included in this understanding is differentiating between physiologic changes associated with breathing and artifact associated with an atmospheric (not pleural) referenced transducer system. Techniques such as airway pressure measurement can aid the clinician in the identification of specific points in the respiratory cycle. This article provided a review of the major respiratory factors influencing waveform values, both physiologic and artifactual. Application of principles outlined in this article should improve the accuracy associated with interpreting hemodynamic waveforms.
Ahrens
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D016477:Artifacts; D006439:Hemodynamics; D006801:Humans; D008991:Monitoring, Physiologic; D012121:Respiration, Artificial / Q000451:nursing / Q000592:standards*