The major physiological reason for heartburn (reflux oesophagitis) in pregnancy is due to the relaxation of the LES(lower esophageal sphincter) and the decreased tone and mobility of the smooth muscles, which is caused from increased progesterone. As the fetus increases in size, pressure in the abdomen compounds, decreasing the angle of the gastroesophageal junction. This allows for oesophageal regurgitation, less time for the stomach to empty and reverse peristalsis (Blackburn 2007; Stables & Rankin 2010). The main symptoms of heartburn are a “burning sensation” in the chest or back of the throat. Other symptoms may include eructation, difficulty in swallowing, and an acid or metal taste in the mouth. In terms of advice, there are some standard measures that can alleviate symptoms. These include examining the woman’s diet and eliminating foods that might aggravate, eating smaller portions and more frequently, sleeping in upright positions and avoidance of eating closer to bedtime (Law et al. 2010; Vazquez 2010).
Constipation is known to affect more that 40% of women during their pregnancy (Derbyshire, Davies & Detmar 2007). In looking at the physiological reason for constipation, increasing levels of progesterone affects bowel motility and reduces the peristaltic movement of the gastrointestinal tract. This is turn then increases the time food is passed through the gut causing
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