# What are normal pH bicarbonate HCO3 and PaCO2 levels?

## What are normal pH bicarbonate HCO3 and PaCO2 levels?

Normal Results Partial pressure of carbon dioxide (PaCO2): 38 to 42 mm Hg (5.1 to 5.6 kPa) Arterial blood pH: 7.38 to 7.42. Oxygen saturation (SaO2): 94% to 100% Bicarbonate (HCO3): 22 to 28 milliequivalents per liter (mEq/L)

What is normal value of pH pCO2 and HCO3 in blood?

pH (7.35-7.45) PaO2 (75-100 mmHg) PaCO2 (35-45 mmHg) HCO3 (22-26 meq/L)

### How do you calculate hc03?

Background:

1. Normal values: HCO3: 22-26 meq/L. PCO2: 35 – 45 mmHg. pH: 7.35 – 7.45.
2. Quick derivation: Carbonic acid (H2CO3) equilibrium: [H+] x [HCO3-] <—> [H2CO3] <—> [CO2] x [H2O] [H+] x [HCO3-] = K x [CO2] x [H2O]
3. Final: pH = 6.1 +log (HCO3-/ (0.03 x PCO2))

What is a normal PaCO2?

#### What is HCO3 normal range?

22 to 28 milliequivalents
Normal Results Arterial blood pH: 7.38 to 7.42. Oxygen saturation (SaO2): 94% to 100% Bicarbonate (HCO3): 22 to 28 milliequivalents per liter (mEq/L)

What is normal PCO2 level?

between 35 to 45 mmHg
The partial pressure of carbon dioxide (PCO2) is the measure of carbon dioxide within arterial or venous blood. It often serves as a marker of sufficient alveolar ventilation within the lungs. Generally, under normal physiologic conditions, the value of PCO2 ranges between 35 to 45 mmHg, or 4.7 to 6.0 kPa.

## How do you calculate pCO2 from HCO3?

In contrast, the equation pCO2 = 1.5 × HCO3 + 8, known as Winters’ formula, exhibits larger errors. Conclusions: The easy-to-use expression pCO2 = HCO3 + 15 seems suitable for the daily clinical practice in hemodialysis patients.

Can you calculate HCO3 from CO2?

The equations are as follows: H2O + CO2 <=> H2CO3 <=> H+ and HCO3- <=> another H+ and CO3 with a charge of -2. All the reactions in this series are two-way, in other words, the reaction can go forward or in reverse. You can calculate the concentration of bicarbonate, HCO3, at equilibrium using equilibrium constants.

### What is HCO3 in ABG?

HCO3- Concentration of hydrogen carbonate in. blood. Used to determine along with pH. and CO2 source of acid base imbalance.

How much does pH change with PCO2?

1. For an acute change in pCO2 of 10, the pH will change by 0.08. If all changes in pH can be accounted for by the change in pCO2, then the problem is an acute respiratory acidosis or alkalosis. If not, there is a metabolic component.