If you have symptoms like these, you need to see a doctor right away, especially if they are sudden and severe. In most cases, pulmonary embolism is caused by a blood clot in the leg that breaks loose and travels to the lungs. A blood clot in a vein close to the skin is not likely to cause problems. But having blood clots in deep veins (deep vein thrombosis) can lead to pulmonary embolism.
â A daily increase of 340 calories is recommended during the second trimester of pregnancy, and an increase of 452 calories is recommended during the third trimester of pregnancy. â The nutritional requirements of women who are pregnant or lactating involves more than increased caloric intake.
Generally speaking, women need to increase their caloric intake by 340 kcal/day during the second trimester and 450 kcal/day during the third for a singleton pregnancy, according to the IOM. As with total weight gain, a womanâs rate of weight gain during the second and third trimesters is based on her prepregnancy BMI. Table 3 offers a summary of suggested rates of weight gain for a singleton pregnancy. The IOM report does not provide information about weight gain rates for twin pregnancies.