摘要:

SummaryGastric dilatation‐volvulus (GDV>was surgically induced in ten dogs to evaluate changes in the following variables: surface oxygen partial pressure (PsO2) of splanchnic viscera, systemic O2transport (DO2), systemic O2consumption (VO2), and O2utillization ratio (O2UR). These variables have been shown to be closely correlated to tissue viability and patient survival in a variety of ischemic disorders.Gastric dilatation‐volvulus was corrected after 2.5 hours and the dogs were given lactated Ringer's solution (90ml/kg) over 30 minutes (resuscitation). At 6 hours, the dogs were euthanized without recovery from anesthesia.Gastric dilatation‐volvulus resulted in a significant (p<0.05) decrease of splanchnic visceral PsO2and DO2and a significant (p<0.01) increase in O2UR. Systemic O2consumption did not change significantly during the experiment.Resuscitation resulted in a translent and significant (p<0.05) increase in PsO2to baseline, except for hepatic PsO2. Systemic O2transport and O2UR increased significantly (p<0.001) compared to baseline. Surface oxygen partial pressure and D02were significantly (P<0.05) below baseline at the conclusion of the experiment, whereas O2UR remained significantly (p<0.05) above baseline. Surface oxygen partial pressure of all splanchnic viscera, except liver PsO2correlated DO2throughout the experiment (r: 0.69–0.78).Assessment of DO2, VO2, and O2UR may be used to evaluate efficacy of cardiovascular support during corrective surgery for can

ISSN:1479-3261    

DOI:10.1111/j.1476-4431.1991.tb00088.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

SummaryThe purpose of this study was to determine whether lingual vanous blood gas samples reflect arterial acid‐base gas status in anethetized dogs. Heparinized blood samples were drawn simultaneously from the lingual vein and a peripheral artery in 50 anestheized dogs that were clinical surgical patients, as well as from four experimental dogs in which hemorrahaic shock was being studied. Blood pH, oxygen tension (PO2), and bicarbonate (HCO3‐)) from the two sources in clinical patients showed significant liner correlation, although arterial PO2)(PaO2)) tended to be approximately 110mm Hg higher than lingual venous PO2). During hemorrahgic shock, however, PaO2) and PaCO2) were significantly different from lingual venous PO2) and PCO2), Lingula venous blood gas analysis may be useful in assessing acid‐base and blood gas status in routline cases, but should not be relied upon in dogs with low cardiac output or poor perf

ISSN:1479-3261    

DOI:10.1111/j.1476-4431.1991.tb00089.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

摘要:

SummaryWith respiratory therapy in critically ill veterinary patients becoming more commonplace, a consistent Indicator of pulmonary function status is necessary. Although calculation of the pulmonary shunt fraction correlates well with the degree of pulmonary dysfunction, lts detetmination requires placement of a pulmonary arterial catheter, an invasive procedure that may not be practical in many clinical situations. Using Information obtained from the atterial blood gas, many other oxygen‐tension derived Indices have been suggested as noninvasive measurements of the efficiency of pulmonary gas exchange, lncluding the alveoiar‐arterial oxygen tension difference, the ratio of arterial to alveolar oxygen tension, the ratio of arterial to inspired oxygen tension, and the ratio of alveolar‐arterial gradient to arterial oxygen tension. A total of 427 blood gas values from 195 different patients were evaluated. A loglstic regression model using a stepwise algorithm was constructed to assess potential multicollinearity and interaction between factors. The only factors that contributed significantly to the model predictive of survival were age (p<0.015), base excess (p<0.029), and the alveolar‐arterial oxygen tension difference (p

ISSN:1479-3261    

DOI:10.1111/j.1476-4431.1991.tb00090.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY

ISSN:1479-3261    

DOI:10.1111/j.1476-4431.1991.tb00091.x

出版商:Blackwell Publishing Ltd    

年代:1991

数据来源: WILEY