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Home Q & A Board Biology-Related Homework Help Medicine Emergency Medical Care
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123kduncan 123kduncan
wrote...
6 years ago
What procedure is used to overcome the limitations associated with estimating resting energy expenditures?
 
  a. Measuring blood glucose before and after exercise
  b. Monitoring body temperature during heavy exercise
  c. Indirect calorimetry
  d. The Douglas procedure


Q. 2  Which of the following statements is false regarding energy needs?
 
  a. They vary with state of health.
  b. They vary with activity level.
  c. They are increased with obese patients.
  d. They increase with sepsis.


Q. 3  When is the basal metabolic rate (BMR) best obtained?
 
  a. After 10 hr of fasting
  b. While walking on a treadmill
  c. On rising in the morning
  d. 1 hr after lunch


Q. 4  In which of the following patients would indirect calorimetry be indicated? 1. Patients who are difficult to wean from mechanical ventilation 2. Patients with morbid obesity 3. Patients with a high level of stress
 
  a. 1 only
  b. 1 and 2 only
  c. 1 and 3 only
  d. 3 only
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Replies
wrote...
#1
6 years ago
(Answer to Q. 1)  ANS: C
To overcome the limitations of estimating formulas, energy needs can be measured at the bed-side. To do so, a procedure called indirect calorimetry is used.

(Answer to Q. 2)  ANS: C
Of course, energy needs vary according to activity level and state of health. Energy needs of sick patients can be significantly higher than predicted normal values. Energy needs for obese indi-viduals are less because adipose tissue uses less energy than does muscle. Energy needs should be reevaluated and adjusted whenever weight changes more than 5 to 10 lb.

(Answer to Q. 3)  ANS: A
Obtained after 10 hr of fasting, the BMR measures the number of calories (kcal) expended at rest per square meter of body surface per hour (kcal/m2/hr).

(Answer to Q. 4)  ANS: C
Specific clinical conditions supporting the need for indirect calorimetry as a tool in nutrition as-sessment are listed in Box 23-4.
123kduncan Author
wrote...
#2
6 years ago
Brilliant
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