Bedridden Patient Height Calculator
Estimate height and weight for immobile patients using validated medical formulas
Patient Information & Measurements
Height Estimation
Weight Estimation (Optional)
📏 Measurement Guide
Semi-span (Demi-span)
Distance from sternal notch to middle fingertip with arm extended horizontally
Knee Height
Heel to anterior thigh surface with leg at 90° angle
Arm Circumference
Mid-point between shoulder and elbow, arm relaxed
Recumbent Height
Crown-to-heel length while lying flat
🏥 Clinical Applications
Nutritional Assessment
Calculate BMI and nutritional requirements
Medication Dosing
Body surface area calculations for drug dosing
Care Planning
Equipment sizing and positioning
📊 Formula Accuracy
Understanding Height and Weight Estimation in Bedridden Patients
📋 Clinical Importance
Accurate height and weight estimation in bedridden patients is crucial for:
- Nutritional assessment and caloric requirements
- Medication dosing calculations
- Body surface area calculations
- Ventilator settings and medical equipment sizing
- Monitoring treatment progress
Why Direct Measurement Isn't Always Possible
Direct height and weight measurement may be impossible due to:
- Spinal deformities or contractures
- Inability to stand or bear weight
- Severe illness or unconsciousness
- Medical equipment limitations
- Safety concerns for patient movement
🎯 Formula Selection Guide
Most Accurate Methods:
- Knee Height: Gold standard for height estimation
- Recumbent Height: Direct measurement when possible
- Semi-span: Good alternative when knee height unavailable
Population Considerations:
- Age-related height loss affects accuracy
- Gender-specific formulas improve precision
- Race/ethnicity considerations in some formulas
- Body habitus may affect measurement accuracy
Measurement Tips:
- Use consistent measurement techniques
- Ensure patient comfort and cooperation
- Take multiple measurements when possible
- Document measurement conditions
⚠️ Important Medical Disclaimer
This calculator is for educational and informational purposes only. The estimated values are approximations based on validated formulas but may not reflect actual measurements.
Always consult with healthcare professionals for medical decisions. Clinical judgment should always supersede calculator results. Consider patient-specific factors and use multiple estimation methods when possible.
Not intended for: Primary diagnosis, treatment planning without professional oversight, or replacement of clinical assessment.