Episode 57 – Weight and Calculate w/Lynn Lamkin


How do you calculate your drug dosages? What do you base it on? In this podcast episode, we are joined by Lynn Lamkin, EM pharmacist, to discuss weight based versus non-weight based drug dosages. We also breakdown when true body weight (TBW), ideal body weight (IBW), lean body weight (LBW) or adjusted body weight (ABW) is a more appropriate option.

Weight Calculations

True Body Weight (TBW): No calculation needed

Body Mass Index (BMI): (TBW(lbs)/2.25)/(height(in)/39.37)2

Lean Body Weight (LBW): Female: (9270xTBW)/(8780+(244xBMI), Male: (9270xTWB)/(6680+216xBMI)

Ideal Body Weight (IBW): Female: [2.3 x (height-60)]+45, Male: [2.3 x (height-60)] + 50

Adjust Body Weight (ABW): IBW + [0.4x(total body weight-IBW)]



Lynn Lamkin, PharmD, BCPS is an emergency medicine pharmacy specialist at Clark Memorial Hospital in Jeffersonville, Indiana.  Since graduating from Purdue College of Pharmacy in 2007, she has started new practice sites at two separate community hospitals, including her current institution. Additionally, she has promoted significant expansion of  pharmacist coverage in the emergency department, and established a PGY2 emergency medicine residency at University of Louisville Hospital.  She holds academic appointments at multiple  colleges of pharmacy, as well as University of Louisville Medical School. Over the course of her career, she has delivered presentations at the local and state level highlighting anticoagulant reversal, pharmacist impact on human trafficking, and immunization updates. Her current areas of research and practice interest include emergency preparedness, pharmacist practice expansion in the emergency department, and optimizing transitions of care for indigent populations.

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