Body Surface Area, m2
Dubois & Dubois		0.007184 * W0.425 * H0.725
Furquan & Haque		([4 * W + 7] / [90 + W])
Gehan & George		0.0235 * W0.51456 * H0.42246
Haycock		0.024265 * W0.5378 * H0.3964
Livingston & Lee		0.1173 * W0.6466
Mosteller		√ [W * H / 3600]
W = weight, kg H = height, cm

The BMI (or Quetelet Index) is calculated as: BMI = 703 * Weight(lb) ÷ [Height(in)]²
Standard BMI weight status categories for adults are:(*)

BMI	Weight Status
Below 18.5	Underweight
18.5 - 24.9	Normal
25.0 - 29.9	Overweight
Above 29.9	Obese

(midpoint weight from 1999 Metropolitan table range) = height(in) * Slope + Intercept

Sex/Frame Size	Slope	Intercept	R-value
Female/Small	2.82	-59.36	0.9954
Female/Medium	2.95	-52.73	0.9994
Female/Large	3.25	-65.15	0.9986
Male/Small	2.66	-36.14	0.9879
Male/Medium	3.07	-56.46	0.9916
Male/Large	3.54	-78.08	0.9934

Sedentary or light activity lifestyles. These people have occupations that do not demand much physical effort, are not required to walk long distances, generally use motor vehicles for transportation, do not exercise or participate in sports regularly, and spend most of their leisure time sitting or standing, with little body displacement (e.g. talking, reading, watching television, listening to the radio, using computers). One example is male office workers in urban areas, who only occasionally engage in physically demanding activities during or outside working hours. Another example are rural women living in villages that have electricity, piped water and nearby paved roads, who spend most of the time selling produce at home or in the marketplace, or doing light household chores and caring for children in or around their houses.
Active or moderately active lifestyles. These people have occupations that are not strenuous in terms of energy demands, but involve more energy expenditure than that described for sedentary lifestyles. Alternatively, they can be people with sedentary occupations who regularly spend a certain amount of time in moderate to vigorous physical activities, during either the obligatory or the discretionary part of their daily routine. For example, the daily performance of one hour (either continuous or in several bouts during the day) of moderate to vigorous exercise, such as jogging/running, cycling, aerobic dancing or various sports activities, can raise a person's average PAL from 1.55 (corresponding to the sedentary category) to 1.75 (the moderately active category). Other examples of moderately active lifestyles are associated with occupations such as masons and construction workers, or rural women in less developed traditional villages who participate in agricultural chores or walk long distances to fetch water and fuelwood.
Vigorous or vigorously active lifestyles. These people engage regularly in strenuous work or in strenuous leisure activities for several hours. Examples are women with non-sedentary occupations who swim or dance an average of two hours each day, or non-mechanized agricultural labourers who work with a machete, hoe or axe for several hours daily and walk long distances over rugged terrains, often carrying heavy loads.

Estimation based on body weight
Source	Patient characteristics	Multiplier		Predicted Energy Requirement, kcal	Select
Ziegler	Critically ill patients	25		hi
ASPEN	nonobese	25 - 30		hi
	BMI 30 - 50	11 - 14		hi
	BMI > 50	22 - 25 * IBW		hi

Estimation based on REE multipliers
Source	Patient characteristics	Multiplier		Predicted Energy Requirement, kcal	Select
Miles	All hospitalized patients without burns, head injuries or fever	1.0 - 1.2		hi
	Head trauma	1.2 - 1.45		xxxx - xxxx
	Burns > 45% BSA	1.4 - 1.5		xxxx - xxxx
Ziegler	Critically ill patients	1.0 - 1.2		hi
Barak	Infection	xxxxx		xxxx - xxxx
	Liver disease	xxxxx		xxxx - xxxx
	IBD	xxxxx		xxxx - xxxx
	Abscess	xxxxx		xxxx - xxxx
	Pancreatic disease	xxxxx		xxxx - xxxx
	Solid tumor	1.0 - 1.2		hi
	Other infections	xxxxx		xxxx - xxxx
	Transplantation	xxxxx		xxxx - xxxx
	General Surgery	xxxxx		xxxx - xxxx
	Leukemia/lymphoma	xxxxx		xxxx - xxxx
	Sepsis	xxxxx		xxxx - xxxx
	Burns	xxxxx		xxxx - xxxx
rd411.com	Predicted EE = BMR * Activity Factor * Stress Factor + T° Factor
	Activity Factor			xxxx - xxxx	🡄 🡄
	Comatose	1.1
	Confined to bed	1.2
	Confined to chair	1.25
	Out of bed	1.3
	Ambulatory	1.5
	Stress Factor
	Surgery
	Minor	1.0-1.2
	Major	1.1-1.3
	Skeletal trauma	1.1-1.6
	Head trauma	1.6-1.8
	Pressure Ulcers
	Stage I	1.0-1.1
	Stage II	1.2
	Stage III	1.3-1.4
	Stage IV	1.5-1.6
	Infection
	Mild	1.0-1.2
	Moderate	1.2-1.4
	Severe	1.4-1.8
	Burns
	< 20% BSA	1.2-1.5
	20%-40% BSA	1.5-1.8

Source	Patient characteristics	Multiplier	Predicted Protein Requirement, g/24h	Select
Ziegler	Normal renal & hepatic function	1.2-1.5	hi
	Hepatic failure (cholestasis)	0.6-1.2	hi
	Encephalopathy	0.6	hi
	Acute renal failure, not on replacement therapy	0.6-1.0	hi
	Renal failure, on replacement therapy	1.2-1.5	hi
Stein	Normal metabolism	0.8	hi
	Non-hypercatabolic, polyuric recovery from ARF	1.0-1.3	hi
	Severe acute pancreatitis	1.2-1.5	hi
	1.5 g/kg/day may be exceeded in extremely catabolic, critically ill patients depending on their energy requirements. An intake of up to 2.5 g/kg body weight/day is recommended by some authors in order to achieve a positive nitrogen balance, particularly in burns patients with no kidney or liver insufficiency, as well as in critically ill patients requiring dialysis due to renal insufficiency An adjustment of the protein intake to >1.5 g/kg body weight/day is also recommended in malnourished patients
ESPEN	Acute renal failure Conservative therapy Mild catabolism	0.6-0.8	hi
	Acute renal failure Extracorporeal therapy Moderate catabolism	1.0-1.5	hi
	Acute renal failure Continuous replacement therapy Severe hypercatabolism	1.7	hi
	Alcoholic steatohepatitis Hepatic cirrhosis	1.2-1.5	hi
	Acute liver failure	0.8-1.2	hi
Aspen 2016	Non-obese	1.2 - 2.0	hi
	BMI 30 - 40	2.0 * IBW	hi
	BMI 40 - 50	2.0 - 2.5 * IBW	hi
	BMI > 50	2.5 * IBW	hi
	Continuous renal replacement therapy	2.5	hi
	Burns	1.5 - 2	hi
	For open abdomen, add 15 - 30 g/liter of lost exudate

Choose components and parameters
Choose CHO source		Target kcal/24h
Choose Lipid source
% nonprotein kcal as lipid
Choose Protein source		Target protein, g/day:
Estimated fluid requirement, cc/day

AA, cc/day		Dextrose, cc/day		Lipids, cc/day		Total volume, cc/day	****	Volume excess/deficit, cc/day	****
Protein kcal		CHO kcal :		Lipid kcal :		Non-lipid infusion rate, cc/hr
AA, final conc	**.*	Dextrose, final conc	**.*	Lipid load, g/kg/d	*.*	Nonprotein kcal	***	Nonprotein kcal : g N ratio	***
Glucose load, g/kg/hr			*.**

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