Dosing of antimicrobials in obesity: Difference between revisions
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== Calculating Body Weight == |
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! Statistic !! Equation (Male) !! Equation (Female) !! Notes |
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| '''[https://www.mdcalc.com/body-mass-index-bmi-body-surface-area-bsa Body mass index]''' (BMI) (kg/m<sup>2</sup>) |
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| colspan=2 | weight, kg / (height, m)<sup>2</sup> |
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| '''[https://www.mdcalc.com/body-mass-index-bmi-body-surface-area-bsa Body surface area]''' (BSA) (m<sup>2</sup>) |
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| colspan=2 | (height, cm × weight, kg / 3600)<sup>1/2</sup> |
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| '''[https://www.mdcalc.com/ideal-body-weight-adjusted-body-weight Ideal body weight]''' (IBW) (kg) |
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| 50 + 2.3 × (inches over 5 ft) |
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| 45.5 + 2.3 × (inches over 5 ft) |
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| '''[https://www.mdcalc.com/ideal-body-weight-adjusted-body-weight Adjusted body weight]''' (ABW) (kg) |
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| colspan=2 | IBW + C × (TBW - IBW) |
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| C = 0.3 to 0.4 |
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| '''Lean body weight''' (LBW) (kg) |
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| 9270 × TBW / 6680 + 216 x BMI |
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| 9270 × TBW / 8780 + 244 x BMI |
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| '''Fat-free weight''' (FFW) (kg) |
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| 0.00139 × (height, cm)<sup>2</sup> - 0.0801 × R + 0.187 × TBW + 39.83 |
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| 0.00151 × (height, cm)<sup>2</sup> - 0.0344 × R + 0.14 × TBW - (0.158 × age) + 20.387 |
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| R = resistance |
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== Further Reading == |
== Further Reading == |
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* Comprehensive Guidance for Antibiotic Dosing in Obese Adults. ''Pharmacotherapy''. 2017;37(11):1415-1431. doi: [https://doi.org/10.1002/phar.2023 10.1002/phar.2023] |
* Comprehensive Guidance for Antibiotic Dosing in Obese Adults. ''Pharmacotherapy''. 2017;37(11):1415-1431. doi: [https://doi.org/10.1002/phar.2023 10.1002/phar.2023] |
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Revision as of 14:55, 9 December 2019
Calculating Body Weight
| Statistic | Equation (Male) | Equation (Female) | Notes |
|---|---|---|---|
| Body mass index (BMI) (kg/m2) | weight, kg / (height, m)2 | ||
| Body surface area (BSA) (m2) | (height, cm × weight, kg / 3600)1/2 | ||
| Ideal body weight (IBW) (kg) | 50 + 2.3 × (inches over 5 ft) | 45.5 + 2.3 × (inches over 5 ft) | |
| Adjusted body weight (ABW) (kg) | IBW + C × (TBW - IBW) | C = 0.3 to 0.4 | |
| Lean body weight (LBW) (kg) | 9270 × TBW / 6680 + 216 x BMI | 9270 × TBW / 8780 + 244 x BMI | |
| Fat-free weight (FFW) (kg) | 0.00139 × (height, cm)2 - 0.0801 × R + 0.187 × TBW + 39.83 | 0.00151 × (height, cm)2 - 0.0344 × R + 0.14 × TBW - (0.158 × age) + 20.387 | R = resistance |
Further Reading
- Comprehensive Guidance for Antibiotic Dosing in Obese Adults. Pharmacotherapy. 2017;37(11):1415-1431. doi: 10.1002/phar.2023
- Dosing of antibiotics in obesity. Curr Opin Infect Dis. 2012;25(6):634-49. doi: 10.1097/QCO.0b013e328359a4c1
