 Solution

Suspected strangulation means threatened or impaired blood supply to herniated tissue; it is more serious than irreducibility alone and can occur without complete intestinal obstruction. The diagnostic assessment must combine the local swelling, abdominal symptoms, general condition and time course.

Ask about a previous hernia, whether it was reducible, a new painful swelling, abrupt failure of reduction, the onset of pain and vomiting, bowel function and prior attempts at manipulation. Examine the relevant sites, including both groins and the femoral regions, rather than attributing unexplained vomiting and abdominal pain solely to a gastric illness. A previously familiar painless lump can become dangerous after years of intermittent reduction. A small femoral hernia may be less conspicuous than its systemic consequences suggest.

Locally, new tenderness, tension, irreducibility and loss of a usual cough impulse raise concern. Erythematous or discoloured overlying skin is more alarming, but can be absent early. Abdominal distension, persistent vomiting and failure to pass stool or flatus support intestinal obstruction. Increasing pain, tachycardia, fever, dehydration, peritonitis or shock suggest advancing compromise. Do not wait for every late sign: prolonged delay can lead to intestinal ischaemia, necrosis and sepsis.^[ref]

Several negative observations are unsafe reassurances. Passage of stool may merely empty bowel below the obstruction. If only part of the bowel wall is trapped, as in a Richter hernia, complete obstruction may never occur. A very ill person may describe less pain late in the course. Disappearance of the external swelling after a forceful manipulation does not prove safe restoration of viable bowel: persistence of pain or obstruction demands reassessment, including possible reduction en masse.^[ref]

An 1866 surgeon relied heavily on these bedside features and on the distinction from an inflamed lymph node, hydrocele, another groin mass or non-strangulated hernia. Contemporary reports describe sequences of attempted reduction, baths, enemata and chloroform before operation. They document period practice; they must not be transferred into a rule that strangulation begins only when repeated reduction has failed.^[ref]

Modern correction: suspected strangulation needs immediate surgical assessment and timely operative treatment. Selected blood tests and imaging, commonly contrast-enhanced computed tomography when useful and feasible, support assessment but should not delay action in a convincing emergency. Normal early laboratory results do not exclude local ischaemia. Current guidance distinguishes an acutely irreducible hernia without evidence of bowel compromise, where supervised reduction may be considered, from suspected strangulation, where emergency surgery is indicated. Ongoing symptoms after apparent reduction also require observation and reassessment.^[ref] The diagnostic goal is not merely to name the lump, but to recognize endangered tissue before irreversible injury.