Assessment of Oxygen Therapy by Arterial Blood Gases.

Effect of controlled oxygen therapy on arterial blood gases in acute respiratory failure.

Seven patients in acute exacerbation of chronic respiratory failure were given 24.5% and later 28% oxygen through Ventimasks. The mean increases in arterial PO(2) were 11 and 21 mm. Hg while breathing 24.5% and 28% oxygen respectively compared with control values while breathing air. Associated increases in arterial PCO(2) were 4 and 8 mm. Hg, respectively. In five of the patients these increas...

Can we better estimate resting oxygen consumption by incorporating arterial blood gases and spirometric determinations?

BACKGROUND We hypothesize that oxygen consumption (V̇o2) estimation in patients with respiratory symptoms is inaccurate and can be improved by considering arterial blood gases or spirometric variables. METHODS For this retrospective study, we included consecutive subjects who underwent cardiopulmonary exercise testing. Resting V̇o2 was determined using breath-by-breath testing methodology. Usin...

Making sense of arterial blood gases.

Arterial Blood Gases: A Simplified Bedside Approach

Interpretation of Arterial blood gases is an essence of critical care. It helps for the assessment of clinical oxygenation, ventilation and acid-base status in critically ill patients. The four closely inter-related physiological parameters pH, PCO2, HCO3 and PO2 helps to diagnose, monitor and manage the ICU patients. Its correct interpretation and application necessitates the knowledge of basi...

Interpreting arterial blood gases: easy as ABC.