venous blood gas
Jump to navigation
Jump to search
Indications
- evaluation of acid-base status
- ventilation-perfusion abnormalities
Reference interval
* pH measurements may be obtained from venous blood, collected & analyzed as arterial blood. pH values are a mean of -0.04 pH units lower with venous blood (2 SDs -0.11 to + 0.04)[2].
In the elderly, pO2 (PaO2) is generally less than that in younger patients. (see PaO2)
Clinical significance
More general terms
Additional terms
Components
- partial pressure of oxygen in venous blood
- partial pressure of carbon dioxide (paCO2) in venous blood
- pH in blood
References
- ↑ Lacy ME et al. Things We Do for No Reason<TM>: Arterial blood gas testing to screen for hypercarbic respiratory failure. J Hosp Med 2025 Apr 4; PMID: https://pubmed.ncbi.nlm.nih.gov/40183604 https://shmpublications.onlinelibrary.wiley.com/doi/10.1002/jhm.70039
- ↑ 2.0 2.1 Journal Watch 21(24):196, 2001
Kelly AM, McAlpine R, Kyle E. Venous pH can safely replace arterial pH in the initial evaluation of patients in the emergency department. Emerg Med J. 2001 Sep;18(5):340-2. PMID: https://pubmed.ncbi.nlm.nih.gov/11559602 Free PMC Article