Abstract
The haemodynamic and gas exchange abnormalities occurring in neurogenic pulmonary oedema (NPO) were examined retrospectively in 20 patients admitted to the Intensive Therapy Unit (ITU) over a 45-month period (February 1992 to November 1995). In 12 patients, where vasoactive therapy with dobutamine was employed, its effect on haemodynamics was examined. Cardiac index (CI median 2.2 l min−1 m−2) and left ventricular stroke work index (LVSWI 20 g.m.m−2) were markedly depressed, while pulmonary artery wedge pressure (PAWP 17 mmHg), mean pulmonary artery pressure (MPAP 30.5 mmHg), systemic vascular resistance index (SVRI 2852 dyne.s.cm−5.m2) and pulmonary vascular resistance index (PVRI 393 dyne.s.cm−5.m2) were substantially elevated above normal values. Mean arterial pressure (MAP 82.5 mmHg) and heart rate (HR 102 bpm) were within normal limits. The poor oxygenation is indicated by a median PaO2/fiO2 ratio of 18.0 kPa. Patients treated with dobutamine showed significant increases in CI and LVSWI and significant falls in SVRI and PAWP at 2 and 6 h after institution of therapy, and there was a significant rise in PaO2/fiO2 ratio to 27.8 kPa at 6 h. NPO was generally associated with severe depression of myocardial function and elevation of pulmonary vascular pressures. This dysfunction was readily reversed by dobutamine.
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Deehan, S.C., Grant, I.S. Haemodynamic changes in neurogenic pulmonary oedema: Effect of dobutamine. Intensive Care Med 22, 672–676 (1996). https://doi.org/10.1007/BF01709745
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DOI: https://doi.org/10.1007/BF01709745