Explanation:

• McBurney’s point → Correct because it marks the surface location of the base of the appendix.

• Midpoint of inguinal ligament → Incorrect because it relates to the femoral artery.

• Tip of xiphoid process → Incorrect because it is in the epigastric region.

• Linea alba → Incorrect because it is a midline fibrous structure.

• Costal margin → Incorrect because it is too superior.

Explanation:

• Streptococcus pyogenes → Correct because it appears as Gram-positive cocci arranged in chains.

• Staphylococcus aureus → Incorrect because it forms clusters.

• Neisseria gonorrhoeae → Incorrect because it is Gram-negative diplococci.

• Enterococcus faecalis → Incorrect because it usually forms pairs or short chains.

• Micrococcus luteus → Incorrect because it forms tetrads.

Explanation:

• CT scan → Correct because it uses X-rays, which are ionizing radiation.

• Ultrasound → Incorrect because it uses sound waves.

• MRI → Incorrect because it uses magnetic fields and radio waves.

• PET without tracer → Incorrect because PET inherently uses radioactive tracers.

• Doppler study → Incorrect because it is a form of ultrasound.

Explanation:

• Testicular torsion → Correct because it threatens testicular viability and needs urgent surgery.

• Epididymitis → Incorrect because it is usually managed medically.

• Hydrocele → Incorrect because it is painless and elective.

• Varicocele → Incorrect because it is chronic.

• Testicular tumor → Incorrect because it presents as painless mass.

Explanation:

• Suppurative inflammation → Correct because it involves neutrophils and pus.

• Serous inflammation → Incorrect because it produces clear fluid.

• Fibrinous inflammation → Incorrect because it produces fibrin.

• Granulomatous inflammation → Incorrect because it involves macrophages.

• Chronic inflammation → Incorrect because it involves lymphocytes and fibrosis.

Explanation:

• Relieve ischemia and preserve limb function → Correct because limb salvage and perfusion are priorities.

• Remove affected vessels → Incorrect because reconstruction is preferred.

• Improve cosmetic appearance → Incorrect because function is primary.

• Avoid medical therapy → Incorrect because surgery complements medical care.

• Delay intervention → Incorrect because early treatment prevents complications.

Explanation: Colchicine or NSAIDs are used acutely.

Explanation:

• Coagulation abnormalities → Correct because cardiopulmonary bypass affects clotting.

• Infection → Incorrect because it causes late bleeding.

• Graft failure → Incorrect because it causes ischemia.

• Myocardial infarction → Incorrect because it causes hemodynamic instability.

• Arrhythmias → Incorrect because they cause rhythm problems.

Explanation:

• T10 → Correct because the umbilicus lies at the T10 dermatome level.

• T6 → Incorrect because it corresponds to the xiphoid process.

• T8 → Incorrect because it is above the umbilicus.

• L2 → Incorrect because it is below the umbilical level.

• L4 → Incorrect because it corresponds to the iliac crest.