Many of information on the safety of drugs during pregnancy were obtained many years ago, before the pregnant women were excluded from the study protocols for possible fetal risks. Because randomized trials in pregnancy are complex and considered unethical. For the same reasons, there are no randomized controlled trials in pregnant women on dialysis. Moreover Compared to the normal subject, the pharmacokinetics and pharmacodynamics in these patients are influenced or by pregnancy or from dialysis techniques or from chronic uremia. Protein energy wasting – PEW- is largely present in dialysis subjects. Nausea and vomiting are present in over 85% of pregnancy and may aggravate PEW. Therefore, it is necessary to adopt specific measures to prevent the PEW as well as periodic inspections of weight gain during pregnancy.
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