بررسی اثر Accupuncture-Like TENS برروی نقطه Pe6 در تهوع و استفراغ سه ماهه اول بارداری

Sixty pregnant women with the gestational age of 6-14 weeks who met the following criteria were selected: 1) Presence of nausea and vomiting. 2) Absence of other medical conditions that cause nausea and vomiting. 3) Negative history of medical treatment for at last three days prior to admission. 4) Negative for threatened abortion, molar and twin pregnancy. Cases were randomly divided into two groups. Mean age of the cases was 25.16 y (range: 16-37 y) and not significantly different in the two groups. The two groups were also similar in gestational age, severity of nausea and vomiting, number of previous pregnancies and abortions, profession, working inside or outside the house, family income and education of patients and their spouses. In one group, Pe6 point of acupuncture was stimulated by TENS (once every 2 hours, 10 minutes each time, from the time of awakening). The other group received placebo. Both groups were hospitalized for 48 hours, and were evaluated for severity of nausea and vomiting, apetite, frequency of vomiting and VAS at their worst day, 24 hours prior to admission and 24 and 48 hours after admission. The two groups were similar in frequency of vomiting, VAS, appetite, and severity of nausea 24 hours prior to admission, and the worst degree of nausea and vomiting. However, a significant difference was observed in the severity of nausea and vomiting 24 and 48 hours after the adminission between TENS and placebo (P=0.000). In the group who received TENS, 24 cases (86.7%) reported improvement (compared to 23.3% in the control group). Of all the cases, 81.6% had received prior medication, only 18.3% of the latter reported improvement with medication. Level of VAS in the groups with severe and mild to moderate nausea and vomiting was not significantly different in the first and second days of admission. Fifteen percent of the cases reported a transient cutaneous rash. Five cases were hospitalized more than once. Of the cases who reported improvement with TENS, 5% had improved after two stimulations, and 47% reported a relapse of symptoms in less than 24 hours after cessation of TENS. In one of the cases who were re-admitted, TENS did not result in alleviation of nausea and vomiting, and 56.6% of all the cases suggested to use TENS at home, 45% were attracted to TENS by commercial advertisements. Disscusion: Stimulation of Pe6 (Neiguan) point alleviates the nausea and vomiting of pregnancy.