Assessment of shock index in healthy cats and in cats presenting to an emergency room with shock

• DOI: 10.1111/vec.13446
• Publication Date: 2025-01-20T11:05:51Z
• Authors: Leandro Fadel; Rodrigo Cardoso R...; Denise Tabacchi F...; Gustavo Machado; Marina Candido Du...; Gabriela da Cruz ...; Mariana Pires Oli...; Jessica de Olivei...; Kamila dos Santos...; Glaucia Bueno Per...; Fernanda Vieira A...
• Keywords: Blood sampling

Abstract Objective To prospectively compare the shock index (SI) in a population of healthy cats with presenting to emergency room (ER) deemed be state shock. Design Prospective cohort study cats. Setting University teaching hospital. Animals Twenty‐seven control were enrolled establish reference interval, and 27 that presented ER clinical signs Shock was defined as abnormalities at least 2 following inclusion criteria: plasma lactate concentration > 2.5 mmol/L; peripheral vasoconstriction (at parameters: capillary refill time >3 s, rectal‐interdigital temperature gradient [RITG] >8°C, femoral pulse not palpable, pale mucous membranes); or systolic blood pressure (SBP) < 100 mm Hg. Interventions Upon presentation, SI (SI = heart rate [HR]/SBP), HR, SBP, RITG recorded both groups, along venous sampling for measurement. Measurements Main Results The mean group 1.47 ± 0.2 1.87 0.47 ( P 0.001). Using equality sensitivity specificity 0.7, an cutoff point 1.54 (95% confidence interval [CI]: 0.49–0.86) determined estimated area under receiver operating characteristic curve 0.78 CI: 0.65–0.90). concentration, did differ between groups. Systolic arterial 0.01), rectal 0.02), interdigital 0.04) differed significantly. Conclusions is noninvasive, easy, reliable parameter distinguishing from normal