Anesthesia & Analgesia, Vol 84, 1091-1096, Copyright © 1997 by International Anesthesia Research Society
The effect of nasal continuous positive airway pressure on plasma endothelin-1 concentrations in patients with severe cardiogenic pulmonary edema
S Takeda, T Takano and R Ogawa
Department of Intensive Care Medicine, Nippon Medical School, Tokyo, Japan.
We investigated the effects of nasal continuous positive airway pressure
(CPAP) on plasma endothelin-1 (ET-1) concentrations in patients with
cardiogenic pulmonary edema. Thirty patients were randomly assigned to two
groups: 15 patients who received oxygen plus nasal CPAP (CPAP group), and
15 patients who received only oxygen by face mask (oxygen group). The heart
rate and the mean pulmonary artery pressure decreased significantly in the
CPAP group. The PaO2/ fraction of inspired oxygen (FIO2) ratio increased in
the CPAP group (163 +/- 70 to 332 +/- 104, P < 0.01) after 6 h and was
significantly higher than that in the oxygen group. Arterial plasma ET-1
concentrations decreased from 6.2 +/- 2.0 pg/mL to 4.8 +/- 1.7 pg/mL (P
< 0.05) after 6 h and to 3.3 +/- 0.7 pg/mL (P < 0.01) after 24 h in
the CPAP group. Arterial plasma ET-1 concentrations in the CPAP group
compared with the oxygen group were significantly lower at 24 h. There was
a correlation between the arterial plasma ET-1 concentrations and mean
pulmonary artery pressure (r = 0.62, P < 0.001), and PaO2/FIO2 (r =
-0.46, P < 0.01). Nasal CPAP led to an early decrease in plasma ET-1
concentrations, and improvement in oxygenation and hemodynamics.