Tissue oxygen saturation is predictive of lactate clearance in patients with circulatory shock.

ABSTRACT:

Background

Tissue oxygen saturation (StO₂) decrease could appear earlier than lactate alteration. However, the correlation between StO₂ and lactate clearance was unknown.

Methods

This was a prospective observational study. All consecutive patients with circulatory shock and lactate over 3 mmol/L were included. Based on the rule of nines, a BSA (body surface area) weighted StO₂ was calculated from four sites of StO₂ (masseter, deltoid, thenar and knee). The formulation was as follows: masseter StO₂ × 9% + (deltoid StO₂ + thenar StO₂) × (18% + 27%)/ 2 + knee StO₂ × 46%. Vital signs, blood lactate, arterial and central venous blood gas were measured simultaneously within 48 h of ICU admissio

SUBMITTER: Chen Y 

PROVIDER: S-EPMC10210288 | biostudies-literature | 2023 May

REPOSITORIES: biostudies-literature