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Pulmonary Hemodynamics During Direct Diagnostic Laryngoscopy
Author(s) -
Sørensen C. Hjort,
Sørensen M. Bredgaard,
Jacobsen E.
Publication year - 1981
Publication title -
acta anaesthesiologica scandinavica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.738
H-Index - 107
eISSN - 1399-6576
pISSN - 0001-5172
DOI - 10.1111/j.1399-6576.1981.tb01605.x
Subject(s) - medicine , anesthesia , laryngoscopy , hemodynamics , pulmonary wedge pressure , central venous pressure , blood pressure , vascular resistance , intubation , heart rate
Acute changes in systemic and pulmonary hemodynamics, together with blood gas changes, were recorded during diagnostic laryngoscopy for biopsy. Laryngoscopy was performed under general anesthesia, and two groups of patients were studied, one was ventilated intermittently, the other had controlied ventilation through an endotracheal tube. Paco 2 rose in both groups, but only in the intermittently ventilated patients did the Paco 2 values increase above normal levels. No significant difference in cardiovascular response was found between the two groups. Significant changes were: increases in mean arterial pressure, pulmonary arterial mean pressure, pulmonary capillary wedge pressure and central venous pressure. The increases reached a maximum during the laryngoscopic procedure and returned towards control values when the laryngoscope was removed. Systemic and pulmonary vascular resistance remained unchanged. The rises in Paco 2 and sympathetic stimulation are believed to be the main causes for the observed hemodynamic changes.