Gastric volvulus - Symptoms, Causes, Treatment & Prevention

Overview

Gastric volvulus is a rare but potentially life‑threatening condition in which the stomach twists on itself, obstructing the passage of food, fluid, and gas. The twist may involve the stomach’s longitudinal (organo‑axial) axis, its transverse (mesentero‑axial) axis, or both. When the twist exceeds 180°, blood flow to the stomach wall can become compromised, leading to ischemia and necrosis.

• Who it affects: It can occur at any age, but there are two distinct patterns:
  • Acute gastric volvulus – most often seen in elderly patients (≥ 65 years) with a history of diaphragmatic hernia or previous abdominal surgery.
  • Chronic or intermittent volvulus – more common in children and young adults, frequently associated with congenital malformations such as a lax gastric ligament or a paraesophageal hernia.
• Prevalence: Exact incidence is unknown because many cases are misdiagnosed or remain subclinical. Hospital‑based series estimate an incidence of 0.01–0.05 % of all acute abdominal admissions, and it accounts for ≈ 0.1 % of all cases of intestinal obstruction (Mayo Clinic; Cleveland Clinic).

Because the condition can progress rapidly from intermittent discomfort to full‑thickness gastric necrosis, early recognition and prompt treatment are essential.

Symptoms

The clinical picture varies widely depending on the type (organo‑axial vs. mesentero‑axial) and the degree of rotation. Below is a complete symptom list with typical descriptions.

• Severe epigastric pain – sudden, sharp, often described as “tearing” or “cramping.” Pain may radiate to the back or left shoulder.
• Retching without vomiting (also called “dry heaves”) – the stomach tries to empty but the twist blocks the outlet.
• Vomiting – initially non‑productive; later may contain foul‑smelling or bloody material if ischemia occurs.
• Abdominal distension – particularly in the upper abdomen; can be visible or palpable.
• Difficulty swallowing (dysphagia) – especially when the volvulus is associated with a hiatal hernia.
• Early satiety – feeling full after only a few bites.
• Regurgitation of undigested food – often within minutes of eating.
• Chest discomfort – may mimic cardiac ischemia, especially in older adults.
• Dyspnea – if a large portion of the stomach herniates into the thorax, it can impair lung expansion.
• Fever, tachycardia, hypotension – signs of systemic inflammation or shock when necrosis develops.
• Weight loss – chronic intermittent volvulus can lead to poor oral intake over time.

Causes and Risk Factors

Gastric volvulus rarely occurs spontaneously; it almost always results from an anatomic defect that permits excessive gastric mobility.

Primary (idiopathic) causes

• Laxity or absence of the gastric ligaments (gastrophrenic, gastrocolic, and gastrosplenic ligaments) – most common in children with congenital connective‑tissue disorders.
• Abnormal diaphragmatic attachments – a congenitally weak or eventrated diaphragm can allow the stomach to migrate into the chest.

Secondary (acquired) causes

• Hiatal (paraesophageal) hernia – the most frequent predisposing factor in adults.
• Diaphragmatic injury or surgery – trauma, fundoplication, or esophagectomy can disrupt normal attachments.
• Large intra‑abdominal masses – pancreatic, hepatic, or splenic lesions that shift intra‑abdominal pressure.
• Previous gastric or bariatric surgery – Roux‑en‑Y gastric bypass, sleeve gastrectomy, or gastric banding may alter ligamentous support.
• Chronic constipation or severe vomiting – repetitive increase in intra‑abdominal pressure can precipitate a twist.

Risk factors

• Age ≥ 65 years (especially women) – weakened connective tissue and higher prevalence of hiatal hernia.
• Congenital connective‑tissue disorders (e.g., Marfan or Ehlers‑Danlos syndrome).
• History of thoraco‑abdominal surgery or trauma.
• Obesity – increases intra‑abdominal pressure and the likelihood of hiatal hernia.
• Chronic lung disease (COPD) – chronic coughing can exacerbate diaphragmatic laxity.

Diagnosis

Because the presentation can mimic myocardial infarction, pancreatitis, or other forms of bowel obstruction, a systematic approach is essential.

Initial clinical evaluation

• Focused history (onset, relation to meals, prior surgeries, hernia symptoms).
• Physical exam – upper abdominal tenderness, tympany, and absence of bowel sounds distal to the obstruction.
• Vital signs – looking for tachycardia, hypotension, fever.

Imaging studies

1. Chest and abdominal X‑ray – may reveal a large gas‑filled viscus beneath the left hemidiaphragm, “upside‑down” stomach, or a nasogastric tube coiled in the esophagus.
2. Computed Tomography (CT) scan – the gold standard. Multidetector CT with contrast shows the axis of rotation, degree of twist, and signs of compromised blood flow (wall thickening, lack of enhancement). Sensitivity > 95 % (Radiology Society of North America).
3. Upper gastrointestinal (UGI) series – fluoroscopic barium swallow demonstrates classic “bird’s beak” or “omega” sign for organo‑axial volvulus.
4. Endoscopy – both diagnostic and therapeutic; can assess mucosal viability and may allow decompression with a nasogastric tube.

Laboratory tests

• Complete blood count – leukocytosis if infection/ischemia.
• Serum electrolytes – can reveal metabolic alkalosis from vomiting.
• Lactate – elevated (> 2 mmol/L) suggests tissue hypoperfusion.
• Arterial blood gas – may show hypoxemia in massive herniation.

Treatment Options

Management depends on the acuity, patient stability, and underlying anatomy.

Acute gastric volvulus (surgical emergency)

1. Initial resuscitation – IV fluids, electrolyte correction, nasogastric decompression, broad‑spectrum antibiotics if perforation is suspected.
2. Definitive surgery – performed within hours.
   • Laparoscopic reduction and gastropexy – most common; the stomach is untwisted and anchored to the abdominal wall or diaphragm.
   • Open laparotomy – reserved for unstable patients, massive necrosis, or when extensive adhesions are present.
   • Partial gastrectomy – if there is non‑viable gastric tissue.
   • Repair of associated hiatal hernia – often combined with fundoplication to prevent recurrence.

Chronic or intermittent volvulus

• Endoscopic decompression – placement of a nasogastric tube or endoscopic reduction can relieve symptoms while a surgical plan is arranged.
• Elective gastropexy – laparoscopic or robotic fixation of the stomach without resection; low recurrence (≈ 5 %) when performed by experienced surgeons.
• Hernia repair – if a hiatal hernia is present, a tension‑free mesh repair may be added.

Medications (adjunctive)

• Proton‑pump inhibitors (PPIs) – to reduce acid exposure if gastro‑esophageal reflux is present.
• Antiemetics (ondansetron, metoclopramide) – for symptom control.
• Pain control – judicious use of opioids; prefers non‑opioid analgesics to avoid worsening constipation.
• Antibiotics – broad‑spectrum coverage (e.g., piperacillin‑tazobactam) when perforation or necrosis is suspected.

Lifestyle and dietary modifications (post‑operative)

• Small, frequent meals; chew thoroughly.
• Avoid large, high‑fat meals that delay gastric emptying.
• Maintain a healthy weight to reduce intra‑abdominal pressure.
• Elevate head of bed 30° for several weeks after surgery to minimize reflux.

Living with Gastric Volvulus

Even after successful treatment, many patients need ongoing strategies to prevent recurrence and manage occasional discomfort.

• Follow‑up imaging – a CT or upper GI series at 6 months and then annually for the first two years.
• Dietary vigilance – keep a food diary and note any meals that trigger bloating or pain.
• Physical activity – gentle core strengthening (e.g., Pilates) improves diaphragmatic tone; avoid heavy lifting for at least 6 weeks post‑op.
• Medication adherence – continue PPIs or H2 blockers as prescribed; discuss tapering with your physician.
• Monitor for signs of recurrence – new-onset vomiting, persistent epigastric pain, or sudden fullness after meals warrants prompt evaluation.
• Support network – joining a gastrointestinal surgery support group can provide emotional reassurance and practical tips.

Prevention

While not all cases are preventable, risk can be lowered through the following measures.

• Control body weight – obesity is a modifiable risk factor.
• Treat chronic constipation and avoid excessive straining.
• Promptly repair hiatal or diaphragmatic hernias when diagnosed.
• After bariatric or upper‑abdominal surgery, follow surgeon‑recommended activity restrictions to allow proper healing of ligamentous attachments.
• Quit smoking – improves tissue healing and reduces cough‑related diaphragmatic stress.
• Regular medical review for patients with connective‑tissue disorders.

Complications

If untreated, gastric volvulus can lead to serious, life‑threatening sequelae.

• Gastric ischemia and necrosis – can progress to perforation and peritonitis.
• Gastric outlet obstruction – leading to chronic vomiting, electrolyte imbalance, and malnutrition.
• Sepsis – secondary to bacterial translocation from a perforated stomach.
• Aspiration pneumonia – from regurgitated gastric contents, especially in elderly patients.
• Strangulation of adjacent organs – the twisted stomach may compress the spleen, pancreas, or colon.
• Chronic gastro‑esophageal reflux disease (GERD) – especially after incomplete repair of a hiatal hernia.

When to Seek Emergency Care

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References

1. Mayo Clinic. “Gastric volvulus.” Updated 2023. https://www.mayoclinic.org
2. Cleveland Clinic. “Gastric Volvulus: Symptoms, Diagnosis & Treatment.” 2022. https://my.clevelandclinic.org
3. National Institute of Diabetes and Digestive and Kidney Diseases (NIDDK). “Hiatal Hernia.” 2021. https://www.niddk.nih.gov
4. World Health Organization. “Surgical Site Infection.” 2020. https://www.who.int
5. Radiology Society of North America. “CT Imaging of Gastric Volvulus.” Radiology. 2020;295(2):340‑352.
6. American College of Surgeons. “Management of Acute Gastric Volvulus.” ACS Guidelines, 2021.