The authors study the changes in cardiopulmonary function after application of bromhexine metabolite VIII (NA 872) in an animal model of adult respiratory distress syndrome (ARDS) and bromhexine glucose solution (BGS) in ARDS patients. After damage of the lung alveolar surfactant by intratracheal atomization of 0.2 M HC1 in LEWE Minipigs significant changes in lung compliance, dead space ventilation, venous admixture, alveolo-arterial oxygen tension difference, pulmonary vascular resistance, and oxygen uptake are present under application of NA 872 in comparison to untreated animals. In ARDS patients treated with BGS, pulmonary function is significantly ameliorated indicated by changes in static effective compliance, oxygen exchange ratio, and alveolo-arterial oxygen tension difference
Abstract
Aim/Hypothesis It was the aim to prospectively study regimes
of “preventive” carbohydrate administration to avoid major
reduction in plasma glucose during physical activity.
Methods 24 patients with type 1 diabetes (age 41±12 years; 11
women, 13 men; BMI 26.5±4.7 kg/m2;
HbA1c 9.1±1.5%; insulin dose
0.64±0.22 IU/kg body weight and day) participated in one
experiment without physical activity and in three experiments with a 4 km,
60 min hike starting at 2 p.m.. No “preventive”
carbohydrates, 2×10 g or 2×20 g carbohydrates (muesli bars)
were taken when starting and after 30 min (randomized order). Plasma glucose
was determined.
Results Within 30 min after starting physical activity, plasma
glucose fell by approximately 70 mg/dl, making additional
carbohydrate intake necessary in 70% of the subjects. This drop was
not prevented by any regimens of “preventive” carbohydrate
intake. After the nadir, plasma glucose rose faster after the 2×20 g
carbohydrate regime (the largest amount tested; p=0.0036). With
“preventive” administration of carbohydrates, significantly
(p<0.05) less additional “therapeutic” carbohydrates
needed to be administered in 6 h following the initiation of the hike.
Conclusions/Interpretation In conclusion, in the setting of 2
h postprandial exercise in type 1 diabetes, preventive carbohydrate
supplementation alone will not completely eliminate the risk of brisk falls
in plasma glucose concentrations or hypoglycaemic episodes. Else, higher
amounts or repeated administration of carbohydrates may be necessary.
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