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Nutrition Through the Life Cycle (...

6th Edition
Judith E. Brown
ISBN: 9781305628007

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BuyFindarrow_forward

Nutrition Through the Life Cycle (...

6th Edition
Judith E. Brown
ISBN: 9781305628007
Textbook Problem

This case study involves use of the American Dietetic Association’s Nutrition Care Process.

  At 37 years of age, Señora Mendez was in her 23rd week of pregnancy and expecting her second child. Or so she thought, until an ultrasound scan detected twins. Her prepregnancy weight was 142 lb (64.5 kg) and her BMI 23 kg/m2. Señora Mendez’s weight-gain progress has been poor due to nausea and vomiting experienced in the first half of pregnancy. Otherwise, Sra. Mendez was experiencing a normal pregnancy for women expecting twins. Concerns about her weight-gain progress and the nutritional needs of women with twin gestation prompted her certified–nurse-midwife to prescribe a prenatal vitamin and mineral supplement and to refer her to a registered dietitian/certified diabetes educator.

  A nutritional assessment completed during week 25 of pregnancy identified that Sra. Mendez had gained 14 pounds since conception, and that her typical dietary intake excluded fish or other sources of omega-3 fatty acids. Her plasma 25-hydroxyvitamin D level was below 24 nmol/L, indicating low vitamin D status. No other nutrition-related problems were identified.

1.    Assume Sra. Mendez will deliver toward the end of week 37 and is now in the beginning of week 25. How many pounds (or kilograms) should be set as a goal for weekly weight gain if a total pregnancy gain at the midpoint of the provisionally recommended range for weight gain in twin pregnancy is to be achieved?

Summary Introduction

To determine: A goal for Person S for weekly weight gain provided that the total pregnancy gain at the midpoint of the recommended range for weight gain in twin pregnancy is to be achieved.

Introduction: In multi fetal pregnancy, weight gain and nutritional factors are important factors in determining the health of the mother. According to the Institute of Medicine, provisional weight gain during twin pregnancies is as follows:

Current weight status of womanWeight gain (in kg)
Normal weight17-25
Overweight14-23
Obese11-19

Weight gain in twin pregnancy is a positive indicator of increased birth weight.

Explanation

Person S aged 37 with a body mass index (BMI) of 23 kg/m2and weighing 142lb (64.5 kg) is in her second pregnancy and expecting twins. In the first half of her pregnancy, her weight gain progress is poor due to nausea and vomiting, otherwise, it was a normal pregnancy. She was prescribed prenatal vitamin and mineral supplements by her midwife. At 25th week, she had a 14 pound weight gain and her nutritional assessment indicated that although her plasma 25-hydroxyvitamin D level was below 24 nmol/L (implying low vitamin D status), there were no other nutrition-related problems.

The BMI of Person S is 23 kg/m2, which implies that she falls under the category of normal weight woman. Since a normal woman is expected to gain a total weight of 17-25 kg with a midpoint of 21 kg during the entire course of her pregnancy. The weight she requires to gain is obtained by the following calculation:

64

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