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Capnographic Monitoring during Anesthesia with Controlled Ventilation in the Horse
Author(s) -
CRIBB PETER H.
Publication year - 1988
Publication title -
veterinary surgery
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.652
H-Index - 79
eISSN - 1532-950X
pISSN - 0161-3499
DOI - 10.1111/j.1532-950x.1988.tb00274.x
Subject(s) - medicine , isoflurane , anesthesia , carbon dioxide , halothane , ventilation (architecture) , anesthetic , arterial blood , blood pressure , dead space , partial pressure , respiratory minute volume , tidal volume , respiratory system , mechanical ventilation , oxygen , mechanical engineering , ecology , chemistry , organic chemistry , engineering , biology
Forty‐five horses were maintained on halothane or isoflurane anesthesia for at least 90 minutes and received positive pressure ventilation after the first 30 minutes of anesthesia. Parameters monitored included end‐tidal partial pressure of carbon dioxide (ETPCO 2 ), arterial blood pressure, and arterial blood gases and pH. There was a statistically significant correlation between end‐tidal carbon dioxide and arterial partial pressure of carbon dioxide (PaCO 2 ) for both halothane and isoflurane anesthesia. There was no significant correlation between end‐tidal carbon dioxide and either body weight or systolic blood pressure. No statistically significant difference was found in arterial to end‐tidal carbon dioxide difference nor in alveolar dead space because of time or positioning over anesthetic periods of up to 3 hours. It is concluded that end‐tidal carbon dioxide monitoring is a satisfactory measure of changes in respiratory acid‐base balance with inhalation anesthesia in horses when ventilation is controlled.