Summary of Disorders of the Stomach
This summary provides an overview of common stomach disorders, including gastritis, peptic ulcer disease, pyloric stenosis and gastric cancer. It covers the etiology, pathophysiology, clinical manifestations, diagnostic approaches, and management strategies for each condition. Understanding these disorders is crucial for healthcare professionals in providing effective patient care and improving outcomes.
Gastritis
- Definition: Gastritis involves inflammation of the gastric mucosa, which can be acute or chronic.
- Pathophysiology: The gastric mucosa is normally protected from acid autodigestion by prostaglandins. Injury occurs when this protective barrier is disrupted, leading to histamine release and vagal nerve stimulation.
- Types of Gastritis:
- Acute Gastritis: Characterized by acute inflammation of the gastric mucosa or submucosa, often caused by thermal injuries, chemical irritants, or bacterial infections.
- Chronic Gastritis: Involves chronic degeneration of the mucosa membranes, often associated with Helicobacter pylori infection, alcohol abuse, or autoimmune conditions.
- Signs and Symptoms: Anorexia, nausea, vomiting, dyspepsia, epigastric pain, hematemesis, and melena.
- Diagnosis: Endoscopy, gastroscopy, laboratory tests (FBC), ESR, histological examination of biopsy specimens, serologic testing for H. pylori.
- Treatment: Antiemetics, anticholinergics, and medications to reduce gastric acid secretion (e.g., cimetidine).
Peptic Ulcer Disease
- Definition: Peptic ulcers are erosions in the mucosal wall of the stomach, pylorus, duodenum, or esophagus.
- Epidemiology: Most frequent between 40 and 60 years of age.
- Types of Peptic Ulcers:
- Acute Ulcers: Often multiple and located in the fundus, typically stress-related.
- Chronic Ulcers: Usually single lesions with thickened margins, prone to recurrence.
- Gastric Ulcers: Occur in the stomach and pylorus.
- Duodenal Ulcers: Occur in the duodenum.
- Esophageal Ulcers: Affect the lower portion of the esophagus.
- Causes: Helicobacter pylori infection, emotional factors, inflammation, Zollinger-Ellison syndrome, hereditary factors, trauma, and prolonged use of GI irritants.
- Pathophysiology: Imbalance between acid secretion and mucosal defenses, leading to ulceration.
- Clinical Manifestations: Epigastric pain, heartburn, dyspepsia, nausea, vomiting, weight loss, and anorexia.
- Diagnosis: History, physical examination, H. pylori test, endoscopy, barium swallow, stool test for occult blood.
- Treatment: Modifying diet, promoting rest, triple therapy (amoxicillin, metronidazole, and omeprazole), and antiemetics.
Nursing Management for Gastritis and Peptic Ulcer Disease
- Goals: Relieve symptoms, promote healing, reduce anxiety, maintain nutrition, provide education, and prevent complications.
- Interventions:
- Environment: Ensure a quiet, stress-free environment.
- Rest: Promote mental and physical rest to reduce gastric activity.
- Pain Relief: Assess and manage pain using prescribed medications.
- Psychological Care: Explain the condition and provide emotional support.
- Observation: Monitor vital signs, pain, and complications.
- Nutrition: Monitor nutrition and provide a balanced diet.
- Elimination: Observe intake and output, and manage constipation.
- Exercises: Gradually introduce exercises as the condition improves.
- Advice on Discharge: Educate the patient on precipitating factors, lifestyle modifications, and medication adherence.
Surgical Treatment for Peptic Ulcer Disease
- Types of Gastric Surgery:
- Vagotomy: Ligation of the vagus nerve to decrease gastric acid secretion.
- Antrectomy: Surgical removal of the antrum of the stomach.
- Pyloroplasty: Dilatation of the pyloric sphincter to increase gastric emptying.
- Gastroduodenostomy (Billroth I): Removal of the lower portion of the stomach with anastomosis to the duodenum.
- Gastrojejunostomy (Billroth II): Removal of the stomach antrum and distal duodenum with anastomosis to the jejunum.
- Subtotal Gastrectomy: Removal of 60-80% of the stomach.
- Total Gastrectomy: Removal of the entire stomach.
- Oesophagojejunostomy: Anastomosis of the inferior esophagus to the jejunum.
- Sleeve Gastrectomy: Removal of a large part of the stomach to aid weight loss.
- Pre-operative Care: Includes introduction, aims, patient admission, psychological care, pre-operative teaching, consent form, observations, investigations, and nutrition.
- Physical Preparation: Includes gastric preparation, bowel preparation, bladder preparation, local site/skin preparation, removal of jewelry/dentures, patient identification, pre-medication, gowning, transfer to theatre, post-operative bed, and communication with family.
Pyloric Stenosis
- Definition: Pyloric stenosis is the narrowing of the pylorus, the opening between the stomach and the small intestine.
- Pathophysiology: Thickening of the pyloric muscles interferes with stomach emptying.
- Signs and Symptoms: Vomiting (often projectile), abdominal pain, belching, constant hunger, dehydration, and failure to gain weight.
- Diagnosis: History, physical examination, ultrasound, and barium x-ray.
- Treatment: Pyloromyotomy or pyloroplasty.
Gastric Cancer
- Definition: Gastric cancer is the malignancy of the cells of the stomach.
- Risk Factors: Family history, Helicobacter pylori infection, polyps, chronic atrophic gastritis, pernicious anemia, and smoking.
- Clinical Manifestations: Early symptoms are often subtle, including loss of appetite, indigestion, vomiting, hematemesis, and cachexia.
- Diagnosis: History, physical examination, biopsies, CT scan, and MRI.
- Treatment: Surgical removal (subtotal or total gastrectomy), chemotherapy, and radiation therapy.
Conclusion:
Understanding the etiology, pathophysiology, clinical manifestations, diagnostic approaches, and management strategies for each condition is crucial for healthcare professionals in providing effective patient care and improving outcomes. These disorders can significantly impact a patient's quality of life, and timely and appropriate intervention is essential.
