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Peripheral oxygen extraction in patients with malignant obstructive jaundice
Author(s) -
Junejo M. A.,
Siriwardena A. K.,
Parker M. J.
Publication year - 2014
Publication title -
anaesthesia
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 1.839
H-Index - 117
eISSN - 1365-2044
pISSN - 0003-2409
DOI - 10.1111/anae.12478
Subject(s) - medicine , oxygen , peripheral , jaundice , oxygen saturation , anesthesia , cardiology , surgery , chemistry , organic chemistry
Summary Malignant obstructive jaundice is associated with poor aerobic capacity. We measured oxygen consumption and oxygen extraction (arterial‐venous oxygen content) in the legs of nine patients during cardiopulmonary exercise testing before pancreaticoduodenectomy. The median (IQR [range]) peak oxygen consumption was 67 (49–77 [32–84])% of predicted. Normal patterns of oxygen extraction were seen with increasing power towards lactate threshold. Near maximal oxygen extraction occurred at peak exercise. Femoral venous oxygen pressure and saturation exceeded baseline values whilst recovering from exercise. These findings suggest that peripheral oxygen extraction is normal during exercise in patients with malignant obstructive jaundice. The primary limitation in oxygen consumption is reduced oxygen delivery.