Translated title of the contribution: Inspiratory effort during obstructive and mixed sleep apnoea

H. Schneider, N. Seinsch, A. Wehrenpfennig, T. Ploch, Th Podszus

Research output: Contribution to journalArticlepeer-review

1 Scopus citations


Oesophageal pressure swings were analysed during complete occlusion of the upper airways in 8 patients with obstructive sleep apnoea. We hypothesed that in dependence of the apnoea type, there is a significant decrease in oesophageal inspiratory effort in REM vs. NREM that is caused by a decrease of the respiratory drive. We analysed in each patient 40 apnoeas in which the respiratory timing (Ti) and the inspiratory effort (Pin) were calculated and compared with the type of apnoea and the degree of oxygen desaturation. A significant decrease in inspiratory effort in REM vs NREM occurred only in mixed apnoeas but not in patients with mainly obstructive apnoeas. Additionally, all apnoeas with a decrease of inspiratory effort at the end of apnoea during NREM were seen in obstructive apnoeas only, whereas none occurred in mixed apnoeas. Due to the significant lower inspiratory timing during obstructive apnoeas vs mixed apnoeas we assume a decrease in respiratory drive in the patients suffering mainly from obstructive apnoeas.

Translated title of the contributionInspiratory effort during obstructive and mixed sleep apnoea
Original languageGerman
Pages (from-to)711-715
Number of pages5
Issue numberSUPPL. 4
StatePublished - 1993
Externally publishedYes

ASJC Scopus subject areas

  • Pulmonary and Respiratory Medicine


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