Patient Parameters And Laboratory Measures - NAPLEX

$IBW=45.5+2.3\times(\text{in}-60)$ kg. Devine formula estimates lean body mass for females based on height above 5 feet for dosing adjustments.

$\text{cm}=\text{in}\times 2.54$. Converts imperial height to metric for use in formulas like BSA or IBW in clinical assessments.

$AdjBW=IBW+0.4\times(TBW-IBW)$. Adjusts for excess adipose tissue in obese patients by adding a fraction of the difference from total to ideal weight.

$BSA=\sqrt{\frac{\text{ht(cm)}\times \text{wt(kg)}}{3600}}$. DuBois formula normalizes drug doses, especially chemotherapeutics, to body size using height and weight measurements.

$BMI=\frac{\text{wt(kg)}}{\text{ht(m)}^2}$. Quantifies body fatness category for health risk assessment using metric weight and height squared.

$CrCl=\frac{(140-\text{age})\times \text{wt}}{72\times SCr}$ (mL/min). Estimates creatinine clearance based on age, weight in kg, and serum creatinine in mg/dL to assess renal function for drug dosing.

$\text{kg}=\frac{\text{lb}}{2.2}$. Converts imperial weight to metric for accurate pharmacokinetic calculations in medication dosing.

Multiply male $CrCl$ by $0.85$. Accounts for lower muscle mass and creatinine production in females compared to males in renal function estimation.

$eGFR=175\times SCr^{-1.154}\times \text{Age}^{-0.203}\times (0.742\ \text{if female})$. Calculates estimated glomerular filtration rate using serum creatinine, age, and a sex adjustment factor for kidney disease staging.

$135$ to $145,\text{mEq/L}$. Reflects normal extracellular fluid osmolality and electrolyte balance in healthy adults.

$CrCl=\frac{(140-65)\times 70}{72\times 1.0}=72.9,\text{mL/min}$. Applies Cockcroft-Gault formula to estimate renal clearance for age, weight, and SCr in drug dosing.

$2.0$ to $3.0$. Balances anticoagulation efficacy against bleeding risk for conditions like atrial fibrillation or VTE.

$eAG=28.7\times A^1c-46.7$ (mg/dL). Converts A1c percentage to average blood glucose over 2-3 months for patient understanding.

$70$ to $99,\text{mg/dL}$. Defines non-diabetic glycemic control per ADA guidelines for diagnosing prediabetes or diabetes.

$2.5$ to $4.5,\text{mg/dL}$. Maintains bone mineralization, energy metabolism, and cellular signaling within homeostatic bounds.

$1.7$ to $2.2,\text{mg/dL}$. Supports enzymatic reactions, neuromuscular stability, and cardiovascular function in normal physiology.

$8.5$ to $10.5,\text{mg/dL}$. Encompasses bound and free calcium levels essential for bone health, neuromuscular function, and clotting.

$Ca_{corr}=Ca_{meas}+0.8\times(4-\text{Alb})$. Adjusts measured calcium for low albumin binding, providing a more accurate free calcium estimate.

$AG=Na^+-(Cl^-+HCO_3^-)$. Measures unmeasured anions to diagnose metabolic acidosis causes like lactate or ketones.

$22$ to $28,\text{mEq/L}$. Indicates bicarbonate buffering capacity for maintaining blood pH in acid-base homeostasis.

$3.5$ to $5.0,\text{mEq/L}$. Maintains cardiac rhythm, neuromuscular function, and acid-base balance within physiological limits.

$IBW=50+2.3\times(\text{in}-60)$ kg. Devine formula estimates lean body mass for males based on height above 5 feet for dosing adjustments.

$3.5$ to $5.0,\text{g/dL}$. Reflects hepatic synthetic function and nutritional status in healthy individuals.