Key result
Positive end-expiratory pressure (PEEP) decreased cardiac output due to reduced right and left ventricular preloads, with TEE-derived cardiac output correlating closely with thermodilution (r=0.97).
Why the study?
Does positive end-expiratory pressure (PEEP) alter cardiac chamber dimensions and cardiac output compared to zero end-expiratory pressure?
Comparison
Positive end-expiratory pressure at 10 cmH2O and… vs Zero end-expiratory pressure (ZEEP)
Design
Other
Authors
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May warrant preload monitoring during PEEP titration in at-risk patients; hypothesis-generating for TEE-guided ventilation, requiring prospective validation.
Does positive end-expiratory pressure (PEEP) alter cardiac chamber dimensions and cardiac output compared to zero end-expiratory pressure?
PEEP-induced reductions in cardiac output are driven by decreased ventricular preload rather than impaired systolic function, as demonstrated by transesophageal echocardiographic dimensional analysis.
Terai et al. (1985) studied this question. Positive end-expiratory pressure (PEEP) vs. Zero end-expiratory pressure (ZEEP) was evaluated on Cardiac output and ventricular preloads. Positive end-expiratory pressure (PEEP) decreased cardiac output due to reduced right and left ventricular preloads, with TEE-derived cardiac output correlating closely with thermodilution (r=0.97).
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