🔄 Mid-Gut / Intestinal Volvulus & Gastric Volvulus

A volvulus is a critical medical emergency characterized by a bowel obstruction where a segment of the gastrointestinal tract abnormally twists upon itself. This twisting compromises both the flow of digestive contents and the vital blood supply to the organs.

1. Midgut & Intestinal Volvulus

Intestinal volvulus primarily impacts two distinct demographics based on underlying anatomy: infants (due to congenital anomalies) and older adults (due to acquired structural changes).

🚨 Signs & Symptoms

Regardless of the patient’s age, a volvulus triggers symptoms via two distinct mechanisms:

1. Bowel Obstruction: Leading to a severely swollen belly (abdominal distension) and vomiting.

2. Ischemia (Loss of Blood Flow): Leading to severe pain, tissue death (necrosis), life-threatening metabolic acidosis, and shock.

🔍 Types & Age Distribution

• 👶 Infants (Midgut Volvulus): Highly vulnerable due to congenital intestinal malrotation (an abnormality where the intestines do not properly fixate in the abdomen during fetal development).

• 👴 Middle-Aged & Elderly Men: Most prone to colonic volvulus. This can happen as a rare complication in people born with a redundant colon (an anatomical variation resulting in extra, floppy colonic loops).

• Segmental Volvulus (All Ages): Can affect anyone, usually predisposed by sticky scar tissue (adhesions) or abnormal, heavy intestinal contents (such as meconium ileus in newborns).

⚠️ Sigmoid Volvulus is the most prevalent form in the entire gastrointestinal tract, accounting for 8% of all intestinal obstructions. It is particularly common in elderly individuals suffering from chronic constipation.

2. Gastric Volvulus (Stomach Twisting)

Gastric volvulus occurs when the stomach twists or rotates abnormally. This severe rotation can block the stomach entirely and cut off its blood supply, risking tissue death and stomach perforation.

📋 The Classic Borchardt’s Triad

First described in 1904, gastric volvulus presents with a distinct triad of symptoms:

1. 💥 Severe, sudden pain in the upper abdomen (epigastric pain).

2. 🤢 Violent dry heaving and retching without the ability to actually vomit.

3. 🛑 The inability of medical staff to pass a nasogastric (NG) tube into the stomach.

🔬 Classification

• Organic Gastric Volvulus: Occurs when there is a structural defect or weakness in the ligaments meant to hold the stomach in place. It is often linked to other anatomical abnormalities (like a hiatal hernia).

• Primary Gastric Volvulus: Less common. It involves a sudden, complete rotation of the stomach, sometimes triggered by severe trauma or intense physical activity.

🏥 Clinical Management & Treatment

All forms of volvulus are time-sensitive medical emergencies. Delayed treatment increases the risk of intestinal gangrene, perforation, and sepsis.

[ Volvulus Suspected ] ──▶ [ Immediate Imaging / X-ray ] ──▶ [ Decompression or Surgery ]

🩺 Non-Surgical Decompression (For Sigmoid Volvulus)

• Sigmoidoscopy & Rectal Tube: For stable adult patients with sigmoid volvulus, doctors may carefully use a flexible camera scope to untwist the bowel and place a temporary rectal tube to release trapped gas and fluid.

• Post-Procedure Monitoring: The patient must be closely monitored in the hospital for 2–3 days to watch for any delayed signs of hidden bowel tissue death (ischemia).

🥼 Surgical Intervention (Laparotomy)

If the patient is unstable, if the stomach is twisted, or if non-surgical untwisting fails, an emergency open-abdominal surgery (laparotomy) is required:

• Untwisting: The surgeon manually unwinds the stomach or intestine.

• Intestinal Resection: Any dead, necrotic bowel tissue must be surgically cut out.

• Primary Anastomosis / Resection: For a sigmoid volvulus, the loose segment is removed, and the remaining healthy ends of the colon are reconnected to prevent the twisting from ever happening again.