An unusual increase in haemodynamic values in a sleep apnoea syndrome patient with prolonged apnoea

M. Vitacca, E. Clini, D. Facchetti, K. Foglio, S. Scalvini, A. Quadri, G. F. Levi

Research output: Contribution to journalArticlepeer-review

Abstract

This case report shows the results of a right heart catheterisation in a patient with sleep apnoea syndrome (SAS). Arterial oxygen saturation (SaO2), heart rate, oronasal flow, and monitoring of electroencephalographic (EEG), sovrayoidal electromyographic (EMG) and thoracoabdominal movements were recorded simultaneously. A mixed apnoea of 180 s was registered, SaO2 fell to 54% and systolyc pulmonary artery pressure (sPAP) increased to 130 mmHg. Slowly, haemodynamic values began to normalise with the reappearance of respiratory acts. We can hypothesize that this patient's nocturnal apnoeas may cause frequent and deep negative pleural pressure swings, with severe continuous action on pulmonary circulation. This case report has shown that a SAS patient is capable of developing an adaptative response to an unusual and remarkable systolyc pulmonary artery pressure increase, which is mainly due to hypoxic vasoconstriction.

Original languageEnglish
Pages (from-to)22-24
Number of pages3
JournalMonaldi Archives for Chest Disease - Cardiac Series
Volume49
Issue number1
Publication statusPublished - 1994

ASJC Scopus subject areas

  • Cardiology and Cardiovascular Medicine
  • Pulmonary and Respiratory Medicine

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