Mortality in a general hospital and urban air pollution.
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Biomedical subjects
Publications and source records attributed to L Clancy.
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We have studied maximal oxygen uptake, maximal heart rate, maximal exercise ventilation and the ventilatory response to exercise in 24 male and 14 female Scottish athletes. The values for maximal oxygen uptake are similar to those reported in other international studies. In eight athletes repeat measurements of maximal oxygen uptake 7-11 months after the initial study showed no change from the initial values. The values for the ventilatory response to exercise in our athletes were normal. The relationship is discussed between maximal oxygen uptake and ventilatory responses to exercise, hypoxia and hypercapnia and it is suggested that these may be related to athletic event.
Ten patients with cor pulmonale complicating severe chronic bronchitis and emphysema have been treated with 2 litres/min of oxygen for prolonged periods in the day, at home, over 12 to 62 months. Two patients died after 12 and 36 months of treatment. Pulmonary arterial pressure was reduced in seven patients, and red cell mass in eight, when the oxygen was given for over 15 hours in the day. Hospital inpatient treatment was greatly reduced following the start of long-term oxygen treatment in all patients. This treatment is expensive, and a controlled trial is necessary to establish its definitive place and cost-effectiveness, but the results of such a current Medical Research Council trial will not be available for a further two years.
1. Maximal oxygen uptake (VO2 max), lung volumes, and ventilatory responses to carbon dioxide and hypoxia have been measured in identical twin athletes, who were trained to a similar high degree. 2. The results confirm previous findings for VO2 max. and lung volumes in identical twins, and are in keeping with the suggestion that genetic factors play a major part in determining the ventilatory response to carbon dioxide and hypoxia.
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