Acid base status in chronic obstructive pulmonary disease patients |
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| Authors: | Varinder Saini Narinder Saini Jasbinder Kaur G P Singh |
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| Institution: | 1. Departments of Chest Diseases and Tuberculosis, Social and Preventive Medicine and Biochemistry, Medical College, 124001, Rohtak, Inida
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| Abstract: | 348 patients of chronic obstructive pulmonary diseases (COPD) were studied for their acid base profile using ABL-3 blood gas
analyser (Radiometer, copenhagan). 185 patients (53.1%) had simple disorders (respiratory acidosis—53%, respiratory alkalosis—25.4%,
metabolic acidosis—11.3%, metabolic alkalosis—10.2%). Mixed disorders were present in 131 patients (34.9%) (respiratory acidosis
and metabolic acidosis—75.2%, respiratory acidosis and metabolic acidosis—14%, metabolic acidosis and metabolic alkalosis—5.7%,
metabolic alkalosis and respiratory alkalosis—4.9%). Hypoxemia without other acid base abnormalities was observed in early
patients of GOPD (42 patients—12%). Chronic respiratory acidosis was the most common finding in advanced cases of COPD (98%).
An almost equal number of such patients had a mixed disorder of respiratory acidosis with metabolic alkalosis (91%). Salt
restriction, prolonged use of steriods and hypokalemia were often related to metabolic alkalosis in such patients. |
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