الفهرس 
Hyperemesi sgrvidorum
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Abstract
Nausea and vomiting of pregnancy begins between the fourth and seventh week after the last menstrual period and cease by 12 weeks tn
60”10of affected women. About 9O.ie of affected women have symptoms
lbat persist beyond 16 weeks and may persist until 22 weeks (If gestation
(Logioll d 1’Il., J003).
Hyperem,esis gravidarum is a severe form of nausea and vomiting
in pregrumc.y. often essocisted with weight loss, ketonemia, ketonuria,
dehydration, electrolyte imbalaince, and possible bepatic and renal
damage necessitating hospitalization (Eliald •• e1 aL. 2000).
The actual iacidence of hyper emesis gravidarum has not yet been
established, but has been reported to be between 0.3% and 2% of all
pregmant women (Davi&, 1(04) •
Different biological and psychological factors may play a role in
triggering hyperemesis gravidarum, Elevated serum steroid bonn one and
aC.G. eoncernranoas as well as gastric motiUty disturbances in early
pregnancy are thought to play a. role in this eolldition (BroU85an1 rutd
Richter., 1998).
Some studies have recently suggested that there is an association
between hyperemes.is gravidarwn and helicobacter pylori infection (Frigo
d aL, 1998;KGUI’OOIfi ,et d. 2002; Slririlt et tII., 2tJIU).
HeHcobacter Pylori is curved Of spiral shaped, Gram negative, noncapsulated
non spore-forming bacillus. The organism measures (O.S-})
nm. in width and (2.5-5.0) om. in length. Helicobacter pylorus plays a
major role in abdominal symptoms and g&SU’I.)-duodenal pathology
(Suerlxlum lind BlllSer •• 20(1).