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The Influence of Ultra-Low Tidal Volume Ventilation During Cardiopulmonary Resuscitation on Renal and Hepatic End-Organ Damage in a Porcine Model

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Journal Biomedicines
Date 2023 Mar 29
PMID 36979878
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Abstract

The optimal ventilation strategy during cardiopulmonary resuscitation (CPR) has eluded scientists for years. This porcine study aims to validate the hypothesis that ultra-low tidal volume ventilation (tidal volume 2-3 mL kg; ULTVV) minimizes renal and hepatic end-organ damage when compared to standard intermittent positive pressure ventilation (tidal volume 8-10 mL kg; IPPV) during CPR. After induced ventricular fibrillation, the animals were ventilated using an established CPR protocol. Upon return of spontaneous circulation (ROSC), the follow-up was 20 h. After sacrifice, kidney and liver samples were harvested and analyzed histopathologically using an Endothelial, Glomerular, Tubular, and Interstitial (EGTI) scoring system for the kidney and a newly developed scoring system for the liver. Of 69 animals, 5 in the IPPV group and 6 in the ULTVV group achieved sustained ROSC and were enlisted, while 4 served as the sham group. Creatinine clearance was significantly lower in the IPPV-group than in the sham group ( < 0.001). The total EGTI score was significantly higher for ULTVV than for the sham group ( = 0.038). Aminotransferase levels and liver score showed no significant difference between the intervention groups. ULTVV may be advantageous when compared to standard ventilation during CPR in the short-term ROSC follow-up period.

Citing Articles

Ultra-low tidal volume ventilation during cardiopulmonary resuscitation shows no mitigating effect on pulmonary end-organ damage compared to standard ventilation: insights from a porcine model.

Mohnke K, Conzelmann P, Renz M, Riedel J, Rissel R, Urmann A Intensive Care Med Exp. 2023; 11(1):81.

PMID: 38006467 PMC: 10676323. DOI: 10.1186/s40635-023-00568-6.

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