Ian R. G. Dowdeswell

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Available evidence indicates that hypercalcemia in pulmonary tuberculosis results from increases in circulating 1α,25-dihydroxyvitamin D [1α,25(OH)2D]. To further characterize vitamin D metabolism in this disorder, the effects of vitamin D, 100,000 units a day for 4 days, were compared in 25 normal subjects and 11 patients with active pulmonary tuberculosis(More)
PURPOSE To retrospectively determine the distribution of stage I lung cancer growth rates with serial volumetric computed tomographic (CT) measurements. MATERIALS AND METHODS This study was institutional review board approved and HIPAA compliant. The informed consent requirement was waived. Patients (n = 149) with stage I lung cancer who underwent two(More)
The effect of acute exercise on natural killer (NK) activity and on the distribution of phenotypic characteristics of peripheral blood lymphocytes was examined. Trained and sedentary individuals underwent a standard progressive exercise test on a cycle ergometer using an incremental work load of 15 W (90 kpm), increased every minute. Each subject was(More)
In advanced chronic obstructive lung disease (COLD), sodium retention is common, associated with reduction in renal plasma flow (RPF) and stimulation of the renin-aldosterone (PRA-PA) system, two abnormalities due to or influenced by hypercapnia: the independent role of hypoxemia in perturbing sodium homeostasis is unknown. In five stable patients with COLD(More)
An increase work rate exercise test was performed by 15 patients with sarcoidosis and by 20 patients with fibrosing alveolitis. The patients with sarcoidosis had a moderate reduction in total lung capacity (TLC) and transfer factor (DLCO), with chest radiographs showing widespread pulmonary infiltration but no evidence of fibrosis. The patients with(More)
To determine the role of hypoxemia in the pathogenesis of impaired sodium and water excretion in advanced chronic obstructive lung disease, 11 clinically stable, hypercapneic patients requiring long-term supplemental oxygen were studied. The renal, hormonal, and cardiovascular responses to sodium and water loading were determined during five-and-a-half-hour(More)
Inspiratory muscle fatigue, a common event in patients in the intensive care unit, is under multifactorial control. To test the hypothesis that systemic oxygenation is a factor in this event, we subjected five healthy males (age 42 +/- 3 yr) to continuous inspiratory pressure (75% of maximal inspiratory pressure, -95 +/- 5 cmH2O) with the use of a(More)
We report the case of a patient who was treated with fluoxetine hydrochloride (Prozac) for depression. Approximately 8 weeks into the treatment, an eosinophilic pleural effusion and serum eosinophilia developed. An extensive workup for the etiology of eosinophilic pleural effusion was unrevealing. Pleural biopsy showed a nonspecific inflammatory reaction(More)