Iran Journal of Nursing

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Nausea and vomiting are two common complaints of the first trimester of pregnancy, which occur in 70% to 90% of pregnancies. They usually begin around 4th to 8th weeks and continue until about 14th to 16th weeks, and in 90% of cases disappear in 22ed week of pregnancy. Nausea and vomiting in the first trimester of pregnancy may occur at any time throughout the day or night. Meanwhile the etiology of nausea and vomiting in pregnancy is said to be unknown, hormonal and Psychological status of the mother may be the causative factors. So, determining the relationships between demographic and pregnancy factors with nausea and vomiting in the first trimester of pregnancy a descriptive cross- sectional study was conducted, in which data were collected through questionnaiors with the use of Rhodes form-2 index. Contributors were 130 pregnant women, selected randomly through cluster sampling method in ten public health centers in Mashhad. Findings revealed that although, there were not significant relationships between age and both nausea and vomiting, age with nausea alone had meaningfull relationship (P= 0.003). The later was through for the relationship between socioeconomic class and vomiting (P=0.007). We also did not find meaningful relationships between gestational age, parity and unplanned pregnancy with nausea, vomiting and reching. To sum up, as some other researchers and we found relationships between demographic and pregnancy factors with nausea and vomiting that can be corrected through instructions, group teaching classes and also face to face teaching sessions, to be held by midwives is recommended.

Keywords: Demographic Factors, Pregnancy Factors, Nausea Vomiting, Ferst trimester of Pregnancy

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