Gerd in Pregnant Women

Topics: Gastroesophageal reflux disease, Achalasia, Stomach Pages: 5 (1446 words) Published: July 12, 2008
Gastroesophageal Reflux Disease
And Dysphagia
In Pregnancy

Gastroesophageal Reflux Disease (GERD) is a common disorder among the general adult population. GERD is a backflow of contents of the stomach into the esophagus that is often due to the result of weakness of the lower esophageal sphincter (LES). This backflow of gastric acids may often produce a burning pain in the esophagus, commonly known as heartburn. Repeated episodes of reflux may cause esophagitis, peptic esophageal strictures, esophageal ulcers, and dysphagia. Dysphagia, or difficulty swallowing, is a major symptom of GERD . Dysphagia may be caused by primary or secondary esophageal motor dysfunction (Ogorek, 1989). In one study, it was found that out of 1000 patients with GERD, 51.3 percent experienced dysphagia. Aspiration, secondary to food obstruction, occurred in 30 percent of these patients. Some patients even developed respiration problems (Henderson, 1977).

In uncomplicated cases of GERD, treatment consists of elevation of the head of the bed, avoidance of acid-stimulating foods, and regular administration of antacids and promotility agents(Richter, 1997). In more extreme cases of GERD, surgical repair may provide relief. One example of a surgical repair is an anti-reflux surgery, called fundoplication. Fundoplication involves wrapping the stomach fundus around the distal esophagus to improve LES pressure. However, this procedure had been shown to interfere with LES relaxation which may not allow food to enter the stomach from the esophagus (Richter, 1997). Many surgical methods can cause serious side effects. One major side effect is dysphagia, so the surgery can help solve GERD, but may cause other problems as well. GERD during pregnancy is a very common occurrence, effecting up to two thirds of all pregnancies (Marrero, 1992). The clinical features of GERD do not appear to be different of that in the general population (Katz, 1998). Symptoms of GERD usually start appearing at about the fifth month of gestation and may increasingly become worse with progression on gestation, even though there have been cases where symptoms start as early as the first trimester. Symptoms of GERD normally subside soon after delivery. Dysphagia is a symptom of complicated reflux, including motility abnormalities, esophageal stricture, esophageal ulceration, or esophageal cancer. However, these complications are rare in pregnancy (Katz, 1998).

The origin of GERD is multifactoral, including the loss of intra-abdominal portion of the LES combined with an elevated intra-gastric pressure secondary to the gravid uterus, altered esophageal mucosal resistance, delayed gastric emptying and quantity of acid secretion (Baron, 1992). Another factor of the decreased LES pressure during pregnancy is due to the increased levels of the female sex organs estrogen, and progesterone. Studies were performed on opossums to identify whether the decrease in LES function is due to estrogen, progesterone, or both causes the smooth muscle relaxation of the LES. The results of the study showed that progesterone appeared to be the mediator of smooth muscle relaxation of the LES, however, estrogen may be needed for progesterone to act on LES (Day, 1990). Another factor that may contribute to GERD is an alteration in gastrointestinal transit time. Studies were done on 15 women in the third trimester of pregnancy, and four weeks postpartum to study the length of time bolus took to travel from the mouth to the stomach. Nine out of 15 women had prolonged transit times during pregnancy. These results show that there also may be delayed gastric emptying, which may promote reflux of gastric contents by increasing the quantity and duration of pooling of gastric secretions (Katz, 1998). In esophageal peristalsis, pregnant women exhibited a slower wave velocity and lower amplitude than women that were not pregnant. These changes in esophageal peristalsis may...
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