General Surgery Principles Practice Questions

Q: Elective cholecystectomy is classified as which type of surgical procedure?

Clean-contaminated. ### Explanation The classification of surgical wounds is based on the **CDC Surgical Wound Classification**, which predicts the risk of postoperative surgical site infections (SSI). **Why Clean-contaminated is correct:** A **Clean-contaminated (Class II)** wound is defined as a procedure where a hollow viscus (respiratory, alimentary, genital, or urinary tract) is entered under controlled conditions and without unusual contamination. In an **elective cholecystectomy**, the biliary tract (part of the alimentary system) is intentionally entered. Since there is no evidence of active infection (acute inflammation) or major break in technique, it falls into this category. The expected infection rate is 3–11%. **Why the other options are wrong:** * **Clean (Class I):** These are uninfected operative wounds in which no inflammation is encountered and the respiratory, alimentary, genital, or urinary tracts are **not** entered (e.g., Hernioplasty, Thyroidectomy). * **Contaminated (Class III):** These involve open, fresh, accidental wounds or procedures with a major break in sterile technique or gross spillage from the GI tract. Acute non-purulent inflammation (e.g., Cholecystitis with bile spillage) falls here. * **Dirty (Class IV):** These involve old traumatic wounds with retained devitalized tissue or existing clinical infection/perforation (e.g., Perforated peptic ulcer, abscess drainage). **High-Yield Clinical Pearls for NEET-PG:** * **Appendectomy:** Elective/Incidental is **Clean-contaminated**; Inflamed is **Contaminated**; Perforated is **Dirty**. * **Prophylactic Antibiotics:** Usually indicated for Clean-contaminated and Contaminated cases. For Clean cases, they are only used if a prosthetic implant is being placed (e.g., Mesh). * **Vaginal Hysterectomy:** Always Clean-contaminated (vagina is colonized).

Q: Klippel-Trenaunay syndrome is associated with which of the following?

Varicose veins. **Explanation:** **Klippel-Trenaunay Syndrome (KTS)** is a rare congenital vascular anomaly characterized by a classic triad of clinical features. Understanding this triad is essential for identifying the correct answer: 1. **Capillary Malformations:** Typically presenting as a "Port-wine stain." 2. **Venous Malformations:** Most commonly manifesting as **Varicose veins** (often in an atypical distribution, such as the lateral aspect of the limb, known as the *Servelle-Martorell vein*). 3. **Soft tissue and Bony Hypertrophy:** Leading to limb overgrowth (macrodactyly or limb length discrepancy). **Why the correct answer is right:** Varicose veins (Option A) are a core component of the KTS triad. These veins are often present from birth or early childhood and result from venous dysplasia or deep vein abnormalities. **Why other options are incorrect:** * **Arteriovenous malformations (Option B):** This is the most important distractor. If AVMs (high-flow lesions) are present along with the KTS triad, the condition is termed **Parkes-Weber Syndrome**. KTS is strictly a low-flow vascular malformation. * **Aortic aneurysm (Option C):** There is no established clinical association between KTS and aortic aneurysms. * **Lymphedema (Option D):** While lymphatic hypoplasia can occur in KTS, it is not a primary diagnostic feature compared to the classic venous malformations. **Clinical Pearls for NEET-PG:** * **Flow Type:** KTS is a **low-flow** malformation; Parkes-Weber is **high-flow**. * **Diagnosis:** Primarily clinical; however, **Duplex Ultrasound** is the initial investigation of choice to assess the venous system. * **Management:** Mostly conservative (compression stockings). Surgery is reserved for complications due to the high risk of recurrence and deep venous system anomalies.

Q: The remodelling phase of wound healing is characterized by:

Type III collagen being replaced by Type I collagen. ### Explanation Wound healing occurs in three overlapping phases: **Inflammatory, Proliferative, and Remodeling.** **1. Why the correct answer is right:** The **Remodeling (Maturation) phase** is the longest stage, beginning around the 3rd week and lasting up to a year or more. During the earlier proliferative phase, **Type III collagen** (granulation tissue) is laid down rapidly because it is flexible and easy to produce. However, it lacks structural strength. During remodeling, Type III collagen is degraded by matrix metalloproteinases (MMPs) and replaced by **Type I collagen**, which is more robust and organized. This "collagen switch" increases the tensile strength of the wound. **2. Why the incorrect options are wrong:** * **Options A & C:** **Type IV collagen** is primarily found in the **basal lamina** (basement membrane). It is not the primary collagen involved in the bulk structural replacement of the dermis during wound contraction and maturation. * **Option D:** This is the inverse of the physiological process. Type I is the "mature" collagen; replacing it with Type III would result in a weaker, more primitive scar. **3. NEET-PG High-Yield Clinical Pearls:** * **Tensile Strength:** At 1 week, a wound has only ~3% of its original strength. By 3 weeks, it reaches ~20%. After remodeling (1 year), it reaches a maximum of **70-80%**; it never returns to 100% of pre-injury strength. * **Collagen Types:** Remember **"Type One is Bone (and strong skin)"** and **"Type Three is Thre-e (Granulation/Early tissue)."** * **Vitamin C:** Essential for the hydroxylation of proline and lysine residues during collagen synthesis; deficiency leads to scurvy and poor wound healing. * **Zinc:** A necessary cofactor for MMPs involved in the remodeling phase.

Q: According to the CEAP classification, what does a healed venous ulcer represent?

C5. The **CEAP classification** is the international standard for describing chronic venous disorders. It stands for **C**linical, **E**tiological, **A**natomical, and **P**athophysiological. ### Why C5 is the Correct Answer The Clinical (C) component of the classification is based on objective signs of venous disease. **C5** specifically denotes **skin changes with a healed venous ulcer**. In contrast, an active ulcer is classified as C6. This distinction is vital for tracking disease progression and treatment efficacy. ### Explanation of Incorrect Options * **A. C2 (Varicose Veins):** Represents dilated, tortuous subcutaneous veins ≥3 mm in diameter. There are no skin changes or ulcers at this stage. * **B. C3 (Edema):** Represents swelling of the lower limb without secondary skin changes like pigmentation or eczema. * **C. C4 (Skin Changes):** Represents skin changes secondary to venous hypertension (e.g., C4a: pigmentation/eczema; C4b: lipodermatosclerosis/atrophie blanche). While these often precede ulcers, no ulcer has occurred yet. ### High-Yield Clinical Pearls for NEET-PG * **C0:** No visible or palpable signs of venous disease. * **C1:** Telangiectasias or reticular veins ( 0.5.

Q: Which of the following diseases is effectively treated by splenectomy and does not typically present with splenomegaly?

Idiopathic thrombocytopenic purpura. **Explanation:** The correct answer is **Idiopathic Thrombocytopenic Purpura (ITP)**. **1. Why ITP is the correct answer:** In ITP, anti-platelet IgG antibodies (produced in the spleen) coat the platelets, leading to their premature destruction by splenic macrophages. Splenectomy is a highly effective second-line treatment because it removes both the primary site of antibody production and the main site of platelet sequestration. Crucially, the spleen in ITP is **not typically enlarged**; if significant splenomegaly is present, a clinician should investigate alternative diagnoses like leukemia or lymphoma. **2. Analysis of Incorrect Options:** * **Sickle Cell Disease:** While splenectomy may be indicated for acute sequestration crises, these patients typically undergo **autosplenectomy** (shrunken, fibrotic spleen) by adulthood due to repeated infarctions. It is not a primary "treatment" for the underlying disease. * **Aplastic Anaemia:** This is a bone marrow failure syndrome. Splenectomy has no role in its management, as the pathology lies in the marrow's inability to produce cells, not their peripheral destruction. * **Thalassemia:** Splenectomy is often indicated for Thalassemia Major to reduce transfusion requirements, but these patients characteristically present with **massive splenomegaly** due to extramedullary hematopoiesis and secondary hypersplenism. **3. NEET-PG High-Yield Pearls:** * **Most common indication for elective splenectomy:** ITP. * **Most common indication for emergency splenectomy:** Trauma (Splenic rupture). * **Vaccination Protocol:** Post-splenectomy patients must be vaccinated against encapsulated organisms (*S. pneumoniae, H. influenzae, N. meningitidis*) ideally 2 weeks before elective surgery or 2 weeks after emergency surgery. * **Peripheral Smear Findings:** Look for **Howell-Jolly bodies**, Pappenheimer bodies, and Heinz bodies post-splenectomy.

Q: Trophic ulcers are caused by all of the following except?

Varicose veins. ### Explanation The core concept behind a **trophic ulcer** is a lack of nutrition to the tissues resulting from **denervation** (loss of sensory/nerve supply) or **prolonged pressure**. **1. Why Varicose Veins is the correct answer:** Varicose veins lead to **Venous Ulcers** (Gaiter’s ulcers), not trophic ulcers. The pathophysiology involves venous hypertension and valvular incompetence, leading to blood stasis and fibrin cuff formation. Unlike trophic ulcers, venous ulcers are typically painful, associated with skin changes like lipodermatosclerosis and hemosiderin staining, and occur in areas with intact sensation. **2. Analysis of Incorrect Options (Causes of Trophic Ulcers):** * **Syringomyelia:** This is a neurological condition causing a "dissociated sensory loss." The loss of pain and temperature sensation leads to repetitive unnoticed trauma, resulting in trophic ulcers (typically in the upper limbs). * **Leprosy:** The most common cause of trophic ulcers in India. It involves peripheral nerve destruction (e.g., tibial nerve), leading to an insensitive foot. Constant pressure on bony prominences during walking causes tissue necrosis. * **Prolonged Recumbency:** This leads to **Pressure Sores (Decubitus ulcers)**, which are a subtype of trophic ulcers. Constant pressure on areas like the sacrum or heels exceeds capillary perfusion pressure, causing ischemic necrosis. ### NEET-PG High-Yield Pearls: * **Classic Site:** Trophic ulcers occur at pressure-bearing, denervated areas (e.g., the ball of the great toe, heel, or ischial tuberosity). * **Characteristics:** They are typically **painless**, "punched out" in appearance, and have a non-mobile base fixed to underlying bone. * **Management Principle:** The most important step in treating a trophic ulcer is **offloading** (removing pressure), often via a Total Contact Cast (TCC). * **Other Causes:** Diabetes Mellitus (Diabetic foot), Tabes dorsalis, and Spina bifida.

Q: Lockwood repair is performed for which condition?

Femoral hernia. **Explanation:** **Lockwood’s infra-inguinal approach** is a classic surgical technique used for the repair of a **femoral hernia**. In this procedure, the incision is made directly over the femoral swelling, below and parallel to the inguinal ligament. It is primarily indicated for elective cases or when the diagnosis of a femoral hernia is certain. The repair involves reducing the hernial sac and approximating the inguinal ligament to the pectineal (Cooper’s) ligament using non-absorbable sutures to close the femoral canal. **Analysis of Incorrect Options:** * **Appendicitis:** Managed via appendectomy (e.g., McBurney’s or Lanz incision). While a femoral hernia can occasionally contain the appendix (De Garengeot hernia), Lockwood repair refers specifically to the hernia repair technique, not the treatment for primary appendicitis. * **Deep Vein Thrombosis (DVT):** This is a medical/vascular condition managed with anticoagulants or thrombolysis, not a surgical "repair" like Lockwood’s. * **Sigmoid Volvulus:** Managed via sigmoidoscopic detorsion or resection (e.g., Hartmann’s procedure), not a groin-based hernia repair. **High-Yield Clinical Pearls for NEET-PG:** * **Three Approaches to Femoral Hernia:** 1. **Lockwood:** Infra-inguinal (Low) approach. 2. **Lotheissen:** Trans-inguinal approach (through the posterior wall of the inguinal canal). 3. **McEvedy:** High/Supra-inguinal approach (vertical incision; best for strangulated hernias as it provides better exposure to the bowel). * Femoral hernias are more common in **females** and have the **highest risk of strangulation** among all hernias due to the narrow, rigid boundaries of the femoral canal.

Question 1

No-touch technique of suturing should be undertaken to reduce the risk of what?

Accepted Answer

Needle stick injuries

Answer

Hematoma formation

Answer

Abscess formation

Answer

None of the above

Question 2

Elective cholecystectomy is classified as which type of surgical procedure?

Accepted Answer

Clean-contaminated

Answer

Clean

Answer

Dirty

Answer

Contaminated

Question 3

Klippel-Trenaunay syndrome is associated with which of the following?

Accepted Answer

Varicose veins

Answer

Arteriovenous malformations

Answer

Aortic aneurysm

Answer

Lymphedema

Question 4

A 25-year-old female presents with a diffuse, non-progressive, and non-tender swelling of the right maxilla, measuring approximately 2 x 1.5 cm, extending from the canine to the first molar region. Radiography reveals a ground glass appearance of the bone in the affected area. What is the appropriate surgical treatment?

Accepted Answer

Surgical cosmetic recontouring only

Answer

Total excision of the lesion

Answer

Curettage of the area with extraction of the involved teeth

Answer

Surgical excision followed by radiotherapy

Question 5

The remodelling phase of wound healing is characterized by:

Accepted Answer

Type III collagen being replaced by Type I collagen

Answer

Type I collagen replacing Type IV collagen

Answer

Type IV collagen replacing Type I collagen

Answer

Type I collagen replacing Type III collagen

Question 6

According to the CEAP classification, what does a healed venous ulcer represent?

Accepted Answer

C5

Answer

C2

Answer

C3

Answer

C4

Question 7

What is the most common site for an intra-abdominal abscess following a laparotomy?

Accepted Answer

Subhepatic

Answer

Subphrenic

Answer

Pelvic

Answer

Paracolic

Question 8

Which of the following diseases is effectively treated by splenectomy and does not typically present with splenomegaly?

Accepted Answer

Idiopathic thrombocytopenic purpura

Answer

Sickle cell disease

Answer

Aplastic anaemia

Answer

Thalassemia

Question 9

Trophic ulcers are caused by all of the following except?

Accepted Answer

Varicose veins

Answer

Syringomyelia

Answer

Leprosy

Answer

Prolonged recumbency

Question 10

Lockwood repair is performed for which condition?

Accepted Answer

Femoral hernia

Answer

Appendicitis

Answer

Deep vein thrombosis

Answer

Sigmoid volvulus

General Surgery Principles — MCQs

General Surgery Principles — MCQs

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