What is the formula for oxygen delivery?

Equation 1 Oxygen delivery index (DO2I) calculation formula (normal range 520-720 ml O2/min/m2). DO2I = O2 delivery index = DO2 mls/min/m2 = (10 × Hb/dl × 1.34 × SpO2) + (PaO2 in mmHg × 0.003 × 10) × Cardiac index l/min/m2.

What is the normal total oxygen delivery?

997.5 ml min
Global oxygen delivery describes the amount of oxygen delivered to the tissues in each minute and is a product of the cardiac output and arterial oxygen content. With a resting cardiac output of 5 litre min−1 (and using the same figures as before), a ‘normal’ adult male has an oxygen delivery of 997.5 ml min−1.

What is normal DO2?

NORMAL VALUES DO2 is approx 1 L/min. O2ER is 25% (increases to ~70% during maximal exercise in an athlete) SvO2 70%

What is oxygen delivery index?

It is the calculated oxygen content difference between arterial and venous blood standardized to cardiac index.

What are the different types of oxygen delivery systems?

Oxygen delivery devices have historically been categorized into three basic types based on their design: low-flow, reservoir, and high-flow.

What is the concentration of oxygen in the blood?

In healthy individuals breathing room air at sea level, SaO2 is between 96% and 98%. The maximum volume of oxygen which the blood can carry when fully saturated is termed the oxygen carrying capacity, which, with a normal haemoglobin concentration, is approximately 20 mL oxygen per 100 mL blood.

What’s the normal range of oxygen extraction ratio?

Oxygen extraction ratio (O2ER) is a ratio of the body’s oxygen consumption (VO2) compared to the systemic oxygen delivery (DO2, formula below). A normal O2ER is ~25%. If oxygen delivery decreases, the O2ER increases as tissues extract more of the delivered oxygen.

What is the normal CaO2?

Normal CaO2 ranges from 16 to 22 ml O2/dl. Because PaO2 and/or SaO2 can be normal in certain conditions associated with hypoxemia, one should always make sure CaO2 is adequate when assessing oxygenation.

How is oxygen delivery related to blood flow?

Most of the oxygen binds to hemoglobin in red blood cells, although a small amount dissolves into the plasma. The oxygen is then transported from the lungs to the peripheral tissues, where it is removed from the blood and used to fuel aerobic cellular metabolism.

What are the most common methods of oxygen delivery?

A nasal cannula is the most common oxygen delivery system, used for mild hypoxia (figure 4a).