Hemoglobin (Hbg) Lab Values
Jun 21, 2023•4 min
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Episode description
Overview
- Hemoglobin
- Normal Value Range
- Pathophysiology
- Special considerations
- Elevated hemoglobin
- Decreased hemoglobin
- Normal value range
- Males – 13.5-16.5 g/dL
- Females – 12.0 – 15.0 g/dL
- Pathophysiology
- Protein attached to red blood cell
- Iron based protein
- 4 groups
- 2 alpha
- 2 beta
- Has a high affinity (attraction) for oxygen
- Oxyhemoglobin
- Has oxygen attached
- Deoxyhemoglobin
- Oxygen has been released
- Oxyhemoglobin
- Oxyhemoglobin Dissociation Curve
- Oxygen saturation
- Shift to the right
- Partial pressure is higher
- HGB attraction to oxygen is lower
- Oxygen becomes less "sticky" and wants to be released
- Causes
- ↓pH
- ↑pCO2
- ↑Temperature
- Shift to the left
- Partial pressure is lower
- HGB attraction is higher
- Oxygen wants to stay "stuck" to HGB
- Causes
- ↑pH
- ↓pCO2
- ↓Temperature
- Special considerations
- Submit in lavender top tube
- Be cautious with phlebotomy technique
- Reduce hemolysis with proper tubing and syringes
- Elevated HGB values
- Polycythemia vera
- Treatments
- Blood letting
- Increased water intake
- Some medications
- Treatments
- Dehydration
- Lung disease
- Pulmonary fibrosis
- COPD
- Certain medical therapies
- EPO supplementation
- Polycythemia vera
- Decreased HGB values
- Thalassemia
- Blood loss
- Sickle Cell anemia
- Aplastic anemia
- Cancers
- Assess for signs of anemia
- Tachycardia
- Fatigue
- Shortness of breath
- Decreased SaO2
- Pallor
- Blood transfusions as necessary
- Treat primary cause of anemia
- Lab Values
- Oxygenation
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