Peer-reviewed veterinary case report
Blood test results during CPR in dogs and cats linked to outcomes
By Hoehne, Sabrina N et al.·Published in Journal of veterinary emergency and critical care (San Antonio, Tex. : 2001)·2023·Department of Veterinary Clinical Sciences, United States·View original on PubMed →
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Original publication title: Association of point-of-care blood variables obtained from dogs and cats during cardiopulmonary resuscitation and following return of spontaneous circulation with patient outcomes.
Plain-English summary
A group of 94 dogs and 27 cats received CPR at a veterinary hospital, and researchers looked at blood tests taken during and after the resuscitation to see how they related to survival. They found that certain blood values, like potassium levels and pH, were linked to whether the pets were able to regain heart function and survive long enough to leave the hospital. For example, higher potassium levels during CPR were associated with a lower chance of survival. These findings suggest that monitoring specific blood tests can help veterinarians predict outcomes for pets undergoing CPR.
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Abstract
OBJECTIVE: To investigate the association of point-of-care biochemical variables obtained during CPR or within 24 hours of return of spontaneous circulation (ROSC) with patient outcomes. DESIGN: Retrospective study. SETTING: University teaching hospital. ANIMALS: Ninety-four dogs and 27 cats undergoing CPR according to the Reassessment Campaign on Veterinary Resuscitation guidelines. INTERVENTIONS: None. MEASUREMENTS AND MAIN RESULTS: Blood gas, acid-base, electrolyte, glucose, and plasma lactate values obtained during CPR or within 24 hours of ROSC were retrospectively evaluated and are described. The blood sample type and collection time with respect to CPR initiation and ROSC were recorded. Measured variables, collection times, and species were included in a multivariable logistic regression model to estimate the odds ratio (OR) and 95% confidence interval of ROSC, sustained ROSC (≥20 min), and survival to hospital discharge. Significance was set at P < 0.05. Seventy-two venous blood samples obtained during CPR and 45 first venous and arterial blood samples obtained after ROSC were included in logistic regression analysis. During CPR, PvO(1.09 [1.036-1.148], P = 0.001) and venous standard base excess (SBE) (1.207 [1.094-1.331], P < 0.001) were associated with ROSC. PvO(1.075 [1.028-1.124], P = 0.002), SBE (1.171 [1.013-1.353], P = 0.032), and potassium concentration (0.635 [0.426-0.946], P = 0.026) were associated with sustained ROSC. Potassium concentration (0.235 [0.083-0.667], P = 0.007) was associated with survival to hospital discharge. Following ROSC, pH (69.110 [4.393-1087], P = 0.003), potassium concentration (0.222 [0.071-0.700], P = 0.010), and chloride concentration (0.805 [0.694-0.933], P = 0.004) were associated with survival to hospital discharge. CONCLUSIONS: Biochemical variables such as PvO, SBE, and potassium concentration during CPR and pH, potassium, and chloride concentration in the postarrest period may help identify dogs and cats with lower odds for ROSC or survival to hospital discharge following CPR.
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Search related cases →Original publication on PubMed: https://pubmed.ncbi.nlm.nih.gov/36537864/