A newly described method for measuring ventilatory response to carbon dioxide and hypoxaemia offers higher accuracy than previous techniques and is suitable for patients with impaired ventilation-perfusion ratios.
Answers are grounded in this paper and cite their sources.
May enable more accurate ventilatory testing in impaired ventilation-perfusion patients; leaves open prospective validation before clinical use.
A method for clinical studies of the ventilatory response to carbon dioxide and to hypoxaemia in patients is described. The main parameters with this method are respiratory frequency, tidal volume, minute volume, timing, and drive. The ventilation of volunteers was not affected while breathing air through the designed apparatus. The response to carbon dioxide and to hypoxaemia in volunteers was reproducible and similar to what has previously been described. Our method proved suitable to test the ventilatory responses in patients with varying degrees of impaired ventilation-perfusion ratios and thus also in patients with a low PaO2. Our method has a higher accuracy than earlier methods.
No takes yet. Share an insight, caveat, or question.
Johnson et al. (1990) studied this question.
Synapse has enriched 10 related papers. Consider them for comparative context: