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Transcutaneous Oxygen Measurement During One‐Lung Anaesthesia
Author(s) -
Salmenperä M.,
Hein J.
Publication year - 1984
Publication title -
acta anaesthesiologica scandinavica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.738
H-Index - 107
eISSN - 1399-6576
pISSN - 0001-5172
DOI - 10.1111/j.1399-6576.1984.tb02051.x
Subject(s) - medicine , enflurane , anesthesia , oxygenation , arterial oxygen tension , ventilation (architecture) , arterial blood , oxygen tension , lung , oxygen , halothane , mechanical engineering , chemistry , organic chemistry , engineering
The value of continuous transcutaneous oxygen tension (Ptco2) monitoring was assessed during the rapidly changing conditions of oxygenation associated with the commencement of one‐lung ventilation (OLV) during thoracic surgery. In ten patients anaesthetized with enflurane‐N 2 O (Fio 2 0.5), PaO 2 , Ptco 2 ,“cardiac output and arterial pressure were measured first during two‐lung ventilation (TLV) and thereafter at frequent intervals during OLV. These variables remained stable during TLV. The mean Pao2 dropped from 24.9 kPa to 11.4 kPa during the first 10 min of OLV. The accompanying decrease in Ptco2 was slower, the mean PtcO2 being 1.3‐2.1 kPa higher than Pao 2 . Ptco 2 correlated well with Pao 2 during OLV (r = 0.907). The elevated PtcO 2 index (PtcO 2 /PaO 2 ) may be partly due to the delayed response of the Ptc02‐detection system in vivo. It is concluded that transcutaneous oxygen monitoring may be used to assess oxygenation in those cases where arterial cannulation is not feasible or if the laboratory conditions cause an undue delay between blood sampling and obtaining the blood‐gas data.