Final answer:
The correct statement regarding weight gain during pregnancy is that the recommended gain is based on current height and weight, with only a small additional intake of 300 calories needed in the second and third trimesters. Proper nutrition and controlled calorie increase are crucial to avoid excessive weight gain and potential health issues.
Step-by-step explanation:
When addressing concerns about excessive weight gain during pregnancy, the most accurate statement a nurse can make is that "the recommended weight gain is determined from your current height and weight". During the first trimester, there is typically no need for additional calorie intake, and a weight gain of approximately 0.45 kg (1 lb) per month is common. However, during the second and third trimesters, the appetite increases, and it is recommended to consume an additional 300 calories per day to support the growing fetus, leading to an average weight gain of 0.45 kg (1 lb) per week.
Pregnancy weight gain primarily occurs in the breasts and abdominal region, and the mother's body undergoes numerous physiological changes like a 30 percent increase in blood volume and a 50 percent increase in respiratory minute volume. It's important to manage weight gain by consuming nutritious foods and ensuring moderate intake of additional calories, proteins, lipids, vitamins, and minerals.
Cravings do occur during pregnancy, but indulging in every craving is not advisable, especially if it leads to excessive caloric intake. The myth that a pregnant woman needs to double her caloric intake is false and can lead to health complications for both the mother and the baby.