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Although nausea and vomiting (morning sickness) is a minor disorder during pregnancy, it may escalate and become a serious complication of pregnancy, and may develop into life–threatening hyperemesis gravidarum. Nausea and vomiting, generally occurs durinA major role in promoting maternal and fetal health is health education to the pregnant women during the first trimester. A pregnant women may need instructions on what constitutes a healthy lifestyle for herself and her baby. The nursing role is very impHowever, although little of research has been done on morning sickness, the exact causes of nausea and vomiting during the first trimester is still unclear, and there is a lack of data related to nausea and vomiting in the first trimester, the most importThe main aim of this study was to provide a detailed description of the patterns of nausea and vomiting during the first trimester of pregnancySummarythat would help in designing plans for health promotion of the pregnant women. This was achieved through providing a detailed description of the patterns of nausea and vomiting in the first trimester of pregnancy and identifying the most important factorsThe study was conducted at the maternal and child health centers of Zagazig City, with a prospective cohort research design. The sample was recruited from attendants at 5th week of pregnancy until 14 weeks, with ranging, age from 20 to 40 years, both primThe tools for data collection included a structured interview questionnaire for socio– demographic and obstetric history, and follow up sheets including questionnaire related to occurrence of nausea and vomiting, degree, frequency associated symptoms, facThe highest percentage (44.0%) were in the age group 20 to less than 25 years, 24.0% of them had a secondary school education, more than three quarters 78.4% were housewives, and three filths of them (60%) had < 200 monthly percapita income.SummaryLess than half of them (45.6%) were primigravidas, whereas 43.2% of them were nulliparas. In most of the cases (94.4%) the current pregnancy was wanted and planned and less than half of the sample (46.4%) were free from disease, 12% of them had glucosuriaThe most common precipitating factors during current pregnancy were cooking (98.0%), smell of certain foods (92.0%), cigarette smoke (90.%), eating certain foods (84.0%), certain odors (72%), stress (60%), the most common relieving factors were avoiding fAs regards the characteristics of nausea and vomiting during current pregnancy, there was a gradual statistically significant decrease in this symptom, from 100% in the first visit to 92.7%, in the third one, (PA statistically significant increase was detected in the evacuation of all content of food from 36.2% in the first visit to 42.3% in the third one, while the evacuation of parts of food decreased from 56.4% in the first visit to 39.4% in the third one.SummaryMoreover, the results have shown statistically significant improve-ements between successive visits in nausea and vomiting, as well as associated symptoms, (P < 0.001), as more then one third of women (36.0%) improved over all symptoms between the first aThe frequency and severity of nausea and vomiting have shown statistically significant improvement throughout the follow-up visit with home care more than medical advice.It is recommended to offer programs raising awareness about the relieving and aggravating factors for nausea and vomiting during pregnancy, particularly for illiterate women, and low income. 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