Body surface area (BSA) in m² from height and weight by the Mosteller, DuBois and Haycock formulas, with the spread between them.
अद्यतनित तपासलेली उदाहरणे: ४
Your body surface area is about 1.84 m² by Mosteller; DuBois gives 1.85 m² and Haycock 1.85 m², a spread of 0.2 %.
Body surface area (BSA) is the total area of the skin, estimated here from height and weight with three formulas. Mosteller (1987) takes the square root of height in centimetres times weight in kilograms divided by 3600. DuBois (1916) and Haycock (1978) raise weight and height to fitted powers. The spread shows how far the three disagree.
Many chemotherapy drugs are dosed in mg per m², cardiac output is divided by BSA to give cardiac index, and kidney function (eGFR) is reported per 1.73 m². At the default 70 kg and 175 cm, Mosteller gives 1.84 m², and DuBois and Haycock both round to 1.85 m².
For adults of average build the formulas agree within about 1.5 %, but they drift apart in obesity: at 120 kg and 170 cm they range from 2.28 to 2.44 m². Dosing protocols state which formula their doses assume.
पडताळणीचा स्रोत: Python 3.8 math: √(175 × 70 / 3600) = 1.844662; 0.007184 × 70^0.425 × 175^0.725 = 1.848143; 0.024265 × 70^0.5378 × 175^0.3964 = 1.846776
पडताळणीचा स्रोत: Python 3.8 math with 90.718474 kg and 182.88 cm: 2.146741, 2.130382, 2.160487
पडताळणीचा स्रोत: Python 3.8 math: 0.456435, 0.437306, 0.463505
पडताळणीचा स्रोत: Python 3.8 math: 0.220479, 0.208616, 0.224415
About 1.8 m². In 3,613 UK adults receiving chemotherapy in 2005, Sacco and colleagues (PLoS One 2010) found a mean of 1.79 m²: 1.91 m² for men and 1.71 m² for women. eGFR is normalised to a reference adult of 1.73 m², so a person with a BSA of 2.1 m² has an absolute kidney filtration rate about 21 % higher than the reported eGFR.
BSA in m² equals the square root of height in centimetres times weight in kilograms, divided by 3600. For 175 cm and 70 kg that is √(175 × 70 ÷ 3600) = √3.40 = 1.84 m². R. D. Mosteller published it in a 1987 letter to the New England Journal of Medicine as a simpler alternative to the DuBois formula that can be worked out on a pocket calculator.
DuBois is the least suited to small children. Haycock and colleagues measured 81 subjects from premature infants to adults and found that the DuBois formula increasingly underestimated surface area below 0.7 m², by 7.96 % in newborns. For a 3.5 kg, 50 cm newborn, DuBois gives 0.209 m² against Haycock's 0.224 m² and Mosteller's 0.220 m². DuBois itself was fitted to only 9 people.
Metabolic rate, blood volume and drug clearance were found to scale more closely with surface area than with weight across body sizes, so mg per m² became the standard way to scale cytotoxic doses. A 75 mg/m² dose for a 1.84 m² adult is 138 mg. BSA explains only part of the variation in clearance between patients, and some drugs, such as carboplatin, are dosed on kidney function instead.
अचूकता तुमच्या इनपुटवर आणि पद्धतीच्या गृहीतकांवर अवलंबून असते. दशांश गणना 50 सार्थ अंक वापरते, पण अंदाज, संख्यात्मक पद्धती आणि मूळ डेटा कमी अचूक असू शकतात; दाखवलेल्या मूल्यांचे पूर्णांकन केल्याने या मर्यादा दूर होत नाहीत. स्वतंत्र स्रोतांतील सोडवलेल्या उदाहरणांशी पडताळणी: ४. उदाहरणार्थ, “70 kg, 175 cm” ची पडताळणी Python 3.8 math: √(175 × 70 / 3600) = 1.844662; 0.007184 × 70^0.425 × 175^0.725 = 1.848143; 0.024265 × 70^0.5378 × 175^0.3964 = 1.846776 याच्याशी केली आहे.
Mosteller RD. Simplified calculation of body-surface area. N Engl J Med 1987;317(17):1098; DuBois D, DuBois EF. A formula to estimate the approximate surface area if height and weight be known. Arch Intern Med 1916;17:863–871; Haycock GB, Schwartz GJ, Wisotsky DH. Geometric method for measuring body surface area: a height-weight formula validated in infants, children, and adults. J Pediatr 1978;93(1):62–66.
केवळ माहितीसाठी, वैद्यकीय सल्ला नाही. ही सूत्रे लोकसमूहांचे वर्णन करतात, तुमचे वैयक्तिक मूल्यमापन नाही; निकालानुसार कृती करण्यापूर्वी डॉक्टरांशी बोला.
या कॅल्क्युलेटरमध्ये स्वतंत्र स्रोतांमधील उत्तरांसह ४ सोडवलेली उदाहरणे आहेत. ती चाचणी संचात चालतात आणि तुम्ही ती येथेही चालवू शकता.
Dose by weight from a mg/kg rate and body weight, capped at the single and daily maximum, with the liquid volume in mL for a given strength.
मेट्रिक किंवा इम्पीरियल एककांतील उंची व वजनावरून बॉडी मास इंडेक्स (BMI) काढा. WHO चा प्रौढांसाठीचा वर्ग व उंचीनुसार निरोगी वजनाची मर्यादा पाहा.
Lean body mass (LBM) from height, weight and sex by the Boer, James and Hume formulas, with the implied body fat percentage.
अमेरिकन नौदलाची मोजपट्टी पद्धत, Jackson-Pollock च्या 3 किंवा 7 ठिकाणच्या त्वचेच्या घड्या किंवा BMI वरून चरबीची टक्केवारी काढा. चरबी, चरबीविरहित वस्तुमान व ACE वर्गही पाहा.
उंची व लिंगानुसार Devine, Robinson, Miller आणि Hamwi सूत्रांनी आदर्श वजन व निरोगी BMI साठीची वजन मर्यादा काढा.
Waist-to-hip ratio and waist-to-height ratio from tape measurements, with the WHO risk cut-offs, the NICE bands and the WHO waist size category.