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Pediatrics HESI Exam 2023 Update Questions And Answers Rated 100% A three-month old boy weighing 10 lbs 15 oz has an axillary temperature of 98.9° F. The nurse determines the daily caloric need for this child is approximately 400 calories per day. 500 calories per day. 600 calories per day. 700 calories per day. - ANSWER-600 calories per day. Rationale: 10 lbs 15 oz = 10.9 lbs. Convert lbs to kg by dividing pounds by 2.2; 10.9/2.2 = 4.954 kg, rounded to 5 kg. An infant ...