View source for WBR0798

 {{WBRQuestion
|QuestionAuthor= {{YD}} (Reviewed by Serge Korjian)
|ExamType=USMLE Step 1
|MainCategory=Physiology
|SubCategory=General Principles
|MainCategory=Physiology
|SubCategory=General Principles
|MainCategory=Physiology
|SubCategory=General Principles
|MainCategory=Physiology
|MainCategory=Physiology
|MainCategory=Physiology
|SubCategory=General Principles
|MainCategory=Physiology
|SubCategory=General Principles
|MainCategory=Physiology
|SubCategory=General Principles
|MainCategory=Physiology
|SubCategory=General Principles
|MainCategory=Physiology
|MainCategory=Physiology
|SubCategory=General Principles
|Prompt=A 25-year-old obese woman presents to the physician's office with complains of weight gain. A complete work-up is unremarkable. The physician decides to attempt lifestyle modification as a first step to help the patient lose weight. The patient explains that she eats 250 grams of proteins, 700 grams of carbohydrates, and 200 grams of fat every day. What is the patient's total caloric intake (in kcal) per day?
|Explanation=The patient's caloric intake must be calculated based on knowledge of the following:
1 gram of protein = 4 kcal <br> 1 gram of carbohydrates = 4 kcal <br> 1 gram of fat = 9 kcal

Accordingly, the following equation may be calculated: (250x4) + (700x4) + (200x9) = (1000 + 2800 + 1800) = 5600 kcal.

|AnswerA=9100 kcal
|AnswerAExp=This is not the correct caloric intake per day of the patient.
|AnswerB=12600 kcal
|AnswerBExp=This is not the correct caloric intake per day of the patient.
|AnswerC=4600 kcal
|AnswerCExp=This is not the correct caloric intake per day of the patient.
|AnswerD=6850 kcal
|AnswerDExp=This is not the correct caloric intake per day of the patient.
|AnswerE=5600 kcal
|AnswerEExp=This is the correct caloric intake per day of the patient. 
Caloric intake/day (kcal) = (250x4) + (700x4) + (200x9) = (1000 + 2800 + 1800) = 5600 kcal.
|EducationalObjectives=1 gram of protein = 4 kcal <br> 1 gram of carbohydrates = 4 kcal <br> 1 gram of fat = 9 kcal
|RightAnswer=E
|WBRKeyword=Calorie, Caloric intake, Obesity, Fats, Carbohydrates, Proteins, kcal, Weight loss
|Approved=No
}}