Abstract
In both human and animal studies a stimulatory effect of corticotropin-releasing hormone (CRH) on respiration and on cognitive parameters has been demonstrated. Our own studies employing human CRH (hCRH) iv in healthy volunteers and different groups of patients have shown hCRH to be a safe drug. We prospectively studied the clinical effects of a standardized dose of 100 micrograms hCRH iv in 12 elderly patients following major abdominal surgery who remained comatose and were under prolonged respirator therapy over a mean period of 37 days. Cardio-respiratory parameters, blood gas values, plasma cortisol and catecholamines were evaluated before and 30 min following hCRH injection. Furthermore, vigilance was tested using a score system. Ventilation was markedly enhanced following hCRH injection while the cardiovascular parameters were only moderately affected. Vigilance was augmented in all subjects and improved impressively in five patients. The changes were of great benefit for the patients treated and supported their respirator weaning procedures and mobilization training.
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