Altered Microvascular Reactivity During a Skin Thermal Challenge Is Associated With Organ Dysfunction and Slow Recovery After Cardiac Surgery.
J Cardiothorac Vasc Anesth
; 2024 Jul 04.
Article
em En
| MEDLINE
| ID: mdl-39034163
ABSTRACT
OBJECTIVES:
To assess microvascular reactivity during a skin thermal challenge early post-cardiac surgery and its association with outcomes.DESIGN:
Noninvasive physiological study.SETTING:
Thirty-five-bed department of intensive care.PARTICIPANTS:
Patients admitted to the intensive care unit post-cardiac surgery.INTERVENTIONS:
Thermal challenge. MEASUREMENTS AND MAINRESULTS:
A total of 46 patients were included; 14 needed vasoactive or ventilatory support for at least 48 hours (slow recovery), and 32 had a more rapid recovery. Skin blood flow (SBF) was measured on the anterior proximal forearm using skin laser Doppler. A thermal challenge was performed by abruptly increasing local skin temperature from 37°C to 43°C while monitoring SBF. The ratio between SBFs at 43°C and 37°C was calculated to measure microvascular reactivity. SBF at 37°C was not significantly different in patients with a slow recovery and those with a rapid recovery, but SBF after 9 minutes at 43°C was lower (48.5 [17.3-69.0] v 85.1 [45.2-125.7], p < 0.01), resulting in a lower SBF ratio (2.8 [1.5-4.7] v 4.8 [3.7-7.8], p < 0.01). Patients with lower SBF ratios were more likely to have dysfunction of at least one organ (assessed using the sequential organ dysfunction score) 48 hours post-cardiac surgery than those with higher ratios 88% versus 40% versus 27% (p < 0.01), respectively, for the lowest, middle, and highest tertiles of SBF ratio. In multivariable analysis, a lower SBF ratio was an independent risk factor for slow recovery.CONCLUSIONS:
Early alterations in microvascular reactivity, evaluated by a skin thermal challenge, are correlated with organ dysfunction. These observations may help in the development of new, simple, noninvasive monitoring systems in postoperative patients.
Texto completo:
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Base de dados:
MEDLINE
Idioma:
En
Revista:
J Cardiothorac Vasc Anesth
Assunto da revista:
ANESTESIOLOGIA
/
CARDIOLOGIA
Ano de publicação:
2024
Tipo de documento:
Article
País de afiliação:
Bélgica