Appendicectomy Techniques
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Direct answer
Where the incision falls matters as much as what follows it: open appendicectomy enters through a muscle-splitting grid iron (or transverse Lanz) incision over McBurney's point, while the laparoscopic operation works through an umbilical port with two working ports, lowering wound infection in the obese, speeding return to work and allowing a full diagnostic sweep when the appendix looks normal. In both, the mesoappendix is divided between ligatures, the base is secured with absorbable ties, clips or a stapler — the stump is not routinely inverted, as trials show inversion adds nothing — and the specimen leaves the abdomen bagged. An appendicular mass in a stable patient is managed conservatively by the Ochsner–Sherren regimen, with interval appendicectomy considered about six weeks later.
What you must remember
- Open steps: grid iron entry, muscles split in the line of their fibres, appendix delivered, mesoappendix ligated, base tied flush and transected; inversion of the stump is optional and adds no benefit.
- Laparoscopic setup: 10 mm umbilical port with 5 mm working ports (typically suprapubic and left iliac fossa); retrograde dissection when the base must be secured before an inflamed tip can be freed.
- Stump discipline: ligate flush with the caecum — a long retained stump causes stump appendicitis, a recognised late complication.
- Appendicular mass: Ochsner–Sherren conservative regimen — intravenous fluids, antibiotics, analgesia and serial monitoring (pulse, temperature, size of mass, abdomen); interval appendicectomy about six weeks later; deterioration means operating.
- Appendicular abscess: percutaneous drainage first, interval appendicectomy later — poking a needle or finger into a phlegmon invites caecal injury.
- Normal appendix found: remove it and document; in fertile women, look hard at the adnexa — the diagnostic advantage of laparoscopy is highest exactly here.
- Specimen rules: extract in a retrieval bag when inflamed or perforated, and always send for histology — an incidental carcinoid or malignancy changes follow-up.
- Carcinoid thresholds: tumours under 1 cm are cured by appendicectomy; over 2 cm, at the base, or deeply invasive warrant right hemicolectomy.
How the exam frames it
Three questions dominate: management of appendicular mass (conservative Ochsner–Sherren with monitoring), of appendicular abscess (drain now, operate later), and of the incidental carcinoid (size and base decide appendicectomy versus hemicolectomy). One-liners test stump appendicitis (long stump), the uselessness of routine stump inversion, and why laparoscopy earns its ports in obese and fertile patients. Indian exams have circled the Ochsner–Sherren monitoring parameters — pulse, temperature, mass size and abdominal signs — for decades, so know what deterioration looks like on that chart rather than just the regimen's name.
Frequently asked questions
Which incision is used for open appendicectomy?
A muscle-splitting grid iron (McBurney) incision over McBurney's point, or the transverse Lanz incision for better cosmesis.
What is the Ochsner–Sherren regimen?
Conservative management of an appendicular mass with intravenous fluids, antibiotics and serial clinical monitoring, reserving surgery for deterioration, with interval appendicectomy about six weeks later.
Is inversion of the appendicular stump necessary?
No — randomised comparisons show no advantage over secure simple ligation; a sound tie or staple line across a healthy base is what matters.
When does laparoscopic appendicectomy win most clearly?
In obese patients and fertile women with diagnostic doubt, lowering wound infection while allowing a complete abdominopelvic survey and treatment of gynaecological mimics.
What follow-up does an incidental appendiceal carcinoid need?
Tumours under 1 cm at the tip are cured by appendicectomy; those over 2 cm, at the base, or deeply invasive warrant right hemicolectomy.