CARDIOVASCULAR AND METABOLIC RESPONSE TO ADRENALINE INFUSION IN WEIGHT-LOSING PATIENTS WITH AND WITHOUT CANCER
CARDIOVASCULAR AND METABOLIC RESPONSE TO ADRENALINE INFUSION IN WEIGHT-LOSING PATIENTS WITH AND WITHOUT CANCER
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DOI：
10.1111/j.1475-097x.1989.tb00997.x
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发表时间：
1989-10-01
期刊：
影响因子：
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通讯作者：
LUNDHOLM, K
中科院分区：
文献类型：
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作者：
DROTT, C;PERSSON, H;LUNDHOLM, K
Fasting is generally accompanied by a decrease in energy metabolism and hormones. On the other hand, indirect evidence has suggested that the response to adrenergic agonists may be maintained or even increased in malnutrition. The present study evaluated whether weight-losing patients with and without cancer have increased plasma concentrations of catecholamines and different responses to intravenously infused adrenaline compared to weight-stable individuals. Eight malnourished cancer and 10 non-cancer patients (11% weight loss) were compared to seven well-nourished and weight-stable patients. Adrenaline was infused i.v. at a rate of 0.005 .mu.g min-1 kg-1 body weight during 40 min followed by a 40 min rest period (without infusion) and then a final 40 min period with i.v. adrenaline infusion (0.02 .mu.g min-1 kg-1 body weight). Plasma glycerol concentration at fast was higher in weight-losing patients compared to weight-stable individuals. Whole body oxygen uptake, carbon dioxide production, heart rate and plasma concentrations of free fatty acids (FFA) increased while the mean arterial pressure decreased significantly in response to adrenaline infusion at 0.02 .mu.g kg-1 min-1 in both weight-losing and weight-stable patients. Adrenaline at 0.005 .mu.g kg min-1 increased plasma FFA levels by 19% (P < 0.05) in weight-losing patients while no significant alteration was observed in well-nourished patients. Adrenaline infusion at 0.02 .mu.g kg-1 min-1 decreased the mean arterial blood pressure and stimulated respiratory gas exchange and heart rate significantly more in weight-losing than in weight-stable patients. The slopes for oxygen uptake, carbon dioxide production, heart rate, plasma FFA and plasma glycerol vs. plasma adrenaline and noradrenaline were all significantly steeper (P < 0.05-0.01) in malnourished patients than in well-nourished controls. The present study suggests an increased sensitivity to adrenaline in weight-losing patients compared to matched controls with normal nutritional state and stable weight.
