Fig. 2. There was a linear relation between rewarming rate and body surface area (BSA): Rate (°C/h) =−0.59 · BSA (m2) + 1.9, r2= 0.74. The three highest rewarming rates were the smallest patients, each weighing only 6 kg. When these three smallest patients were deleted from the analysis, the regression improved: Rate (°C/h) =−0.48 · BSA (m2) + 1.7, r2= 0.88.