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Medicina crítica (Colegio Mexicano de Medicina Crítica)
Print version ISSN 2448-8909
Abstract
PEREYRA-GUZMAN, Eric and TOLEDO-SALINAS, Otoniel. High shock index as a risk factor for organ dysfunction progression: prospective cohort. Med. crít. (Col. Mex. Med. Crít.) [online]. 2023, vol.37, n.2, pp.106-112. Epub May 13, 2024. ISSN 2448-8909. https://doi.org/10.35366/110445.
Introduction:
the relationship between heart rate and systolic blood pressure has been called shock index (SI). The progressive organ dysfunction (POD) is associated with increased mortality.
Objective:
to determine whether elevated shock index is a risk factor for POD in patients with circulatory shock.
Material and methods:
observational and prospective study in patients with circulatory shock. The shock index at admission, 24, 48 and 72 hours was calculated. A shock index > 0.70 beats per minute/mmHg was considered elevated. POD was defined as an increase in the SOFA score (Sequential Organ Failure Assessment) ≥ 2 points at 72 hours. Logistic regression analysis was performed to calculate the strength of association of the shock index with POD.
Results:
90 patients were analyzed, 64.4% of participants had elevated shock index with median of 0.94 (0.81-1.15) beats per minute/mmHg. The percentage of POD in the group with high shock index was 25.86% vs 9.37%, p = 0.09. Multivariate logistic regression analysis showed an OR of 4.11 (1.00-16.92), p = 0.05 for the elevated shock index.
Conclusions:
the shock index > 0.70 beats per minute/mmHg on admission is a risk factor for POD in patients with circulatory shock.
Keywords : shock; shock index; scores on organ dysfunction; critical illness.
