The possibility of nocturnal oxygen desaturation (NOD) in patients with chronic bronchitis and emphysema (CBE) even with basal hypoxemia greater that 55 mmHg is well recognised. Nocturnal hypoventilation is admitted as the main cause for this NOD. In this study we evaluate how the presence of left ventricular dysfunction (LVD) could aggravate NOD. Thirty-six patients with CBE and basal stabilised PaO2 55-70 mmH...
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