What is the reason of heartburn during pregnancy?

RIMS Nursing Officer - 2022

Obstetrics and Midwifery Nursing

Easy

Appeared in: RIMS Nursing Officer - 2022

Explanation

Heartburn in pregnancy is primarily caused by hormonal and physical changes.
The hormone progesterone, which is elevated during pregnancy, causes relaxation of the lower esophageal sphincter (LES), the muscle that prevents stomach acid from entering the esophagus.
A relaxed LES allows acidic stomach contents to reflux into the esophagus, causing a burning sensation.
Additionally, the growing uterus exerts physical pressure on the stomach, which can further promote the backflow of acid.

Option B: While bile can reflux into the stomach and esophagus (bile reflux), the typical burning sensation of heartburn during pregnancy is caused by stomach acid, not an excess secretion of bile.
Option C: Hyperemesis gravidarum is a severe, persistent form of nausea and vomiting during pregnancy that can lead to significant weight loss and dehydration. It is a much more serious condition than common heartburn.
Option D: Palpitations are the sensation of a rapid, fluttering, or pounding heartbeat. This is a cardiovascular symptom and is unrelated to the digestive system or the causes of heartburn.

Clinical Relevance

Nursing practice connection: This is primarily an exam-oriented knowledge point with limited direct bedside application, so retain Pathophysiology of heartburn (pyrosis) in pregnancy as background academic context rather than a clinical decision trigger.
Nurses play a key role in educating pregnant women about simple, effective lifestyle and dietary modifications to manage heartburn, which can significantly improve their quality of life.
It is crucial for nurses to help patients differentiate between common heartburn and symptoms of more severe conditions, such as preeclampsia (epigastric pain) or cardiac issues, ensuring they seek appropriate medical care when necessary.
What if? If a pregnant woman reports heartburn that is not relieved by lifestyle changes and antacids, and is accompanied by severe upper abdominal pain, headache, and visual disturbances, the nurse should suspect preeclampsia and facilitate immediate medical evaluation.

How to Approach the Question

First, identify the key terms in the question: 'heartburn' and 'pregnancy'.
Recall the major physiological changes that occur during pregnancy, focusing on the endocrine (hormonal) and gastrointestinal systems.
Consider the role of progesterone. This hormone is known to relax smooth muscles throughout the body.
Evaluate how this hormonal effect, combined with the physical pressure from the growing uterus, would affect the gastrointestinal tract.
Analyze each option: 'Hormonal changes relaxing the esophagus' directly aligns with the known effects of progesterone on the lower esophageal sphincter. The other options (bile, hyperemesis, palpitations) relate to different body systems or conditions and can be eliminated as the primary cause of simple heartburn.

Concept Tested & Keywords

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E6 Nutrition Kumud Khanna 2e p. 78-80

E6 Obstetrics Williams p. 84-91