General Surgery Principles Practice Questions

Q: High incidence of oral malignancies is attributed to which of the following factors?

Use of pan. **Explanation:** The primary risk factor for oral malignancies, particularly in the Indian subcontinent, is the chronic use of **Pan (betel quid)**. Pan typically contains betel leaf, areca nut, slaked lime, and often tobacco. The underlying medical mechanism involves both chemical and mechanical irritation. **Areca nut** contains alkaloids (like arecoline) that induce fibroblastic proliferation, leading to **Oral Submucous Fibrosis (OSMF)**, a potent premalignant condition. When combined with **tobacco**, the nitrosamines act as potent carcinogens, causing DNA damage and squamous cell carcinoma. **Analysis of Options:** * **Option A (Correct):** Pan chewing is the single most significant epidemiological factor in South Asia, leading to a high "field cancerization" effect in the oral cavity. * **Option B (Incorrect):** While poor oral hygiene and jagged teeth can cause chronic mechanical trauma (leading to ulcers), they are considered secondary or contributory factors rather than the primary driver of high incidence. * **Option C (Incorrect):** HPV (specifically strains 16 and 18) is strongly associated with **Oropharyngeal cancer** (tonsils and base of tongue), but in the Indian context, oral cavity proper cancers are overwhelmingly linked to chewable tobacco. * **Option D (Incorrect):** Poor nutrition (e.g., Vitamin A and iron deficiency/Plummer-Vinson syndrome) predisposes to mucosal atrophy, but it is not the leading cause compared to direct carcinogen exposure. **Clinical Pearls for NEET-PG:** * **Most common site** of oral cancer in India: **Buccal mucosa** (due to the "tobacco pouch" habit). * **Most common histological type:** Squamous Cell Carcinoma (SCC). * **Premalignant conditions:** Erythroplakia (highest transformation risk), Leukoplakia, and OSMF. * **Field Cancerization:** A concept where the entire mucosal surface exposed to a carcinogen is at risk of developing multiple primary tumors.

Q: HIPEC is used for?

Treating peritoneal metastasis. **Explanation:** **HIPEC (Hyperthermic Intraperitoneal Chemotherapy)** is a specialized treatment modality used primarily for **peritoneal carcinomatosis** (metastasis to the lining of the abdominal cavity). The procedure involves two main steps: 1. **Cytoreductive Surgery (CRS):** All visible tumor nodules are surgically removed from the abdomen. 2. **Chemotherapy Infusion:** Heated chemotherapy drugs (usually 41°C to 43°C) are circulated within the abdominal cavity for 60–90 minutes. **Why Option C is correct:** The "Hyperthermic" component enhances the cytotoxicity of the chemotherapy and increases drug penetration into any remaining microscopic tumor cells. By delivering the drug directly into the peritoneum, a high local concentration is achieved with minimal systemic toxicity, making it the gold standard for peritoneal surface malignancies (e.g., pseudomyxoma peritonei, mesothelioma, and select cases of colorectal or ovarian cancer). **Why other options are incorrect:** * **Option A:** Bone metastases are typically identified using Technetium-99m MDP bone scans or PET-CT. * **Option B:** Breast cancer screening relies on Mammography (standard) or MRI (high-risk patients). * **Option C:** Tuberculosis (specifically abdominal TB) is diagnosed via imaging (CT), ADA levels in ascitic fluid, or laparoscopy with biopsy. **High-Yield Clinical Pearls for NEET-PG:** * **Sugarbaker’s Procedure:** Another name for the combination of CRS and HIPEC. * **Common Drugs used:** Mitomycin C (Colorectal), Cisplatin/Doxorubicin (Ovarian/Mesothelioma), and Oxaliplatin. * **PCI (Peritoneal Cancer Index):** A scoring system used to determine the extent of peritoneal spread and eligibility for HIPEC. * **Best Prognosis:** HIPEC shows the best outcomes in **Pseudomyxoma Peritonei** (secondary to appendiceal mucinous neoplasms).

Q: In a patient receiving total parenteral nutrition, what is monitored daily?

Body weight. **Explanation:** Monitoring a patient on Total Parenteral Nutrition (TPN) is critical to prevent metabolic and fluid-related complications. **Why Body Weight is the Correct Answer:** Daily measurement of **body weight** is the most sensitive and practical bedside indicator of a patient's **fluid status**. In the initial phase of TPN, rapid weight gain (e.g., >0.5–1.0 kg/day) usually signifies fluid overload or pulmonary edema rather than true tissue accretion. Conversely, weight loss may indicate inadequate caloric intake or dehydration. Therefore, it is the primary parameter monitored **daily** to adjust fluid and electrolyte administration. **Analysis of Incorrect Options:** * **Plasma Protein (B):** Albumin and pre-albumin have long half-lives (approx. 20 days and 2 days, respectively). They reflect nutritional trends over weeks or several days, making daily monitoring unnecessary and clinically unhelpful. * **Complete Blood Count (C):** CBC is typically monitored 1–2 times per week to check for signs of infection (leukocytosis) or anemia, unless an acute complication is suspected. * **Plasma Osmolality (D):** While TPN is hypertonic, plasma osmolality is generally monitored via indirect markers like serum glucose and electrolytes. It is not a routine daily requirement unless the patient is at high risk for hyperosmolar non-ketotic states. **High-Yield Clinical Pearls for NEET-PG:** * **Daily Monitoring:** Body weight, Intake/Output (I/O) charts, and Blood Glucose (often 6-hourly initially). * **Bi-weekly/Weekly Monitoring:** Electrolytes (BUN, Cr, Na, K), Liver Function Tests (LFTs), and CBC. * **Refeeding Syndrome:** Watch for sudden drops in **Phosphate, Magnesium, and Potassium** when starting TPN in malnourished patients. * **Most common complication:** Catheter-related sepsis (specifically *Staphylococcus aureus* or *Candida*).

Q: A tumor arising in a burns scar is likely to be?

Squamous cell carcinoma. **Explanation:** The correct answer is **Squamous cell carcinoma (SCC)**. A malignancy arising in a site of chronic irritation, chronic non-healing ulcers, or old burn scars is classically known as a **Marjolin’s ulcer**. **Why Squamous Cell Carcinoma is correct:** The underlying mechanism involves chronic inflammation and repeated attempts at tissue repair in a relatively avascular scar. This persistent cellular turnover, combined with poor lymphatic drainage in the fibrotic tissue, predisposes the epithelium to malignant transformation. While Marjolin’s ulcers can occur in various chronic wounds (like osteomyelitis sinuses), they are most characteristically associated with **post-burn cicatrices**. These tumors are typically more aggressive and have a higher rate of metastasis than standard SCC. **Why other options are incorrect:** * **Basal cell carcinoma (BCC):** While BCC is the most common skin cancer overall, it typically occurs on sun-exposed healthy skin. It is rarely associated with burn scars. * **Malignant melanoma:** This arises from melanocytes and is primarily linked to UV radiation and genetic factors, not chronic scar tissue. * **Fibrosarcoma:** This is a mesenchymal tumor. While radiation scars can occasionally predispose to sarcomas, epithelial malignancies (SCC) are far more common in burn scars. **High-Yield Clinical Pearls for NEET-PG:** * **Latency Period:** The average time from the initial burn to the development of Marjolin’s ulcer is **30–35 years** (chronic type). * **Characteristic Feature:** The ulcer usually has **everted edges** and a foul-smelling discharge. * **Management:** Wide local excision (usually with a 2 cm margin) or amputation is the treatment of choice. * **Biopsy:** Always perform a biopsy on any ulcer arising in an old scar that shows new growth, bleeding, or induration.

Q: What is the recommended patient position for optimal insertion of a Ryle's tube?

Sitting position with neck slightly flexed. ### Explanation The correct position for Ryle’s tube (Nasogastric tube) insertion is the **sitting position with the neck slightly flexed**. **Why it is correct:** The goal during NG tube insertion is to guide the tube into the esophagus while avoiding the trachea. 1. **Sitting/High-Fowler’s position** uses gravity to help the tube descend and reduces the risk of aspiration. 2. **Neck Flexion (Chin-to-chest):** This is the most critical maneuver. Flexing the neck narrows the airway opening (laryngeal inlet) and widens the esophageal opening. It also facilitates the "swallowing" reflex, which further helps the tube enter the esophagus. **Why other options are incorrect:** * **Sitting with neck extended:** Extending the neck straightens the path to the trachea, significantly increasing the risk of accidental tracheal intubation and lung trauma. * **Left lateral position:** While used for gastric lavage or in unconscious patients to prevent aspiration, it is not the "optimal" position for active insertion in a conscious patient as it lacks the anatomical advantage of flexion. * **Supine position:** This increases the risk of the tube coiling in the pharynx and poses a high risk of aspiration if the patient gags or vomits. **High-Yield Clinical Pearls for NEET-PG:** * **Measurement:** Measure the tube length from the **Nose to the Earlobe to the Xiphoid process (NEX)**. * **Gold Standard Confirmation:** A **Chest X-ray** is the most reliable method to confirm correct placement. * **Bedside Confirmation:** Aspirating gastric contents (pH <5.5) is the preferred bedside method. The "whoosh test" (auscultation over the epigastrium) is now considered unreliable. * **Contraindication:** Avoid NG tubes in patients with **Basal Skull Fractures** (risk of intracranial insertion) or **Esophageal Varices/Strictures**.

Q: Which of the following is NOT included in the SIRS criteria?

Oliguria. The **Systemic Inflammatory Response Syndrome (SIRS)** is a clinical syndrome characterized by a robust inflammatory response to various insults (infectious or non-infectious). The criteria focus on vital signs and laboratory parameters rather than end-organ dysfunction. ### Why Oliguria is the Correct Answer **Oliguria** (low urine output) is a sign of **organ dysfunction** (specifically acute kidney injury). While it is a critical component of the **SOFA (Sequential Organ Failure Assessment) score** and is used to define "Severe Sepsis" in older classifications, it is **not** part of the four SIRS criteria. ### Explanation of Incorrect Options The SIRS criteria require at least **two** of the following: * **Tachycardia (Option B):** Heart rate > 90 beats per minute. * **Leukocytosis/Leukopenia (Options C & D):** White blood cell count > 12,000/mm³, 10% immature (band) forms. * **Temperature:** > 38°C (100.4°F) or 20 breaths per minute or PaCO₂ < 32 mmHg. ### High-Yield Clinical Pearls for NEET-PG * **Sepsis Definition:** Sepsis was traditionally defined as SIRS + a documented source of infection. However, the **Sepsis-3 guidelines** now define sepsis as life-threatening organ dysfunction caused by a dysregulated host response to infection (SOFA score increase of ≥2). * **qSOFA (Quick SOFA):** A bedside tool used to identify patients at risk of poor outcomes. It includes: 1. Altered mental status (GCS < 15) 2. Systolic BP ≤ 100 mmHg 3. Respiratory rate ≥ 22/min. * **Note:** SIRS is sensitive but not specific; it can be triggered by trauma, burns, or pancreatitis without infection.

Q: According to NHS protocol, what is the correct sequence for surgical handovers and checks?

Sign in, time out, sign out. The correct sequence follows the **WHO Surgical Safety Checklist**, which has been adopted globally (including by the NHS) to reduce morbidity and mortality in the operating theatre. The protocol is designed to follow the chronological flow of a surgical procedure: 1. **Sign In (Before Induction of Anesthesia):** This occurs before the patient is anesthetized. It involves confirming the patient’s identity, the surgical site, the procedure, and consent. It also includes checks for anesthesia safety, pulse oximetry, and allergy/airway risks. 2. **Time Out (Before Skin Incision):** This is a "surgical pause" involving the entire team (surgeon, anesthetist, and nurse). They verbally confirm the patient’s name, the procedure, the site, and anticipate critical events (blood loss, equipment needs, antibiotic prophylaxis). 3. **Sign Out (Before the Patient Leaves the OR):** This occurs during or immediately after wound closure. The nurse verbally confirms the name of the procedure, ensures instrument/sponge counts are correct, and labels any specimens. **Why other options are incorrect:** * **Options A, B, and D** are incorrect because they disrupt the logical clinical timeline. You cannot "Sign Out" (post-op) before you "Sign In" (pre-op), and the "Time Out" must occur immediately before the incision to ensure the final safety check is fresh in the team's mind. **High-Yield Clinical Pearls for NEET-PG:** * **Origin:** The checklist was introduced by the WHO in **2008** (Safe Surgery Saves Lives campaign). * **Goal:** To reduce "Never Events" (e.g., wrong-site surgery). * **Key Step:** The **Time Out** is the only phase where the *entire* surgical team must stop and participate simultaneously. * **Antibiotics:** Administration of prophylactic antibiotics (if indicated) should be confirmed during the **Time Out** (ideally within 60 minutes before incision).

Question 1

You are examining a direct inguinal hernia in a 45-year-old man. On examination, the swelling is doughy in consistency and dull on percussion. The swelling is reducible, but reduction is difficult towards the end. What is your diagnosis?

Accepted Answer

Epiplocele

Answer

Cystocele

Answer

Enterocele

Answer

Hydrocele

Question 2

High incidence of oral malignancies is attributed to which of the following factors?

Accepted Answer

Use of pan

Answer

Poor hygiene

Answer

High incidence of HPV

Answer

Poor nutrition

Question 3

HIPEC is used for?

Accepted Answer

Treating peritoneal metastasis

Answer

Identifying bone metastases

Answer

Screening protocol for breast cancer

Answer

Diagnosing tuberculosis

Question 4

Regarding the management of diabetic foot, which of the following statements are TRUE?

Accepted Answer

Strict diabetic control, topical antibiotics, and diabetic ulcers being trophic ulcers are true; venous system involvement and early amputation are false.

Answer

Strict diabetic control, venous system involvement, and topical antibiotics are true; early amputation and trophic ulcers are false.

Answer

All statements are false.

Answer

All statements are true.

Question 5

Which of the following conditions does NOT show fibrosis?

Accepted Answer

Buruli ulcer

Answer

Marjolin's ulcer

Answer

Venous ulcer

Answer

Peptic ulcer

Question 6

In a patient receiving total parenteral nutrition, what is monitored daily?

Accepted Answer

Body weight

Answer

Plasma protein

Answer

Complete blood count (CBC)

Answer

Plasma osmolality

Question 7

A tumor arising in a burns scar is likely to be?

Accepted Answer

Squamous cell carcinoma

Answer

Basal cell carcinoma

Answer

Malignant melanoma

Answer

Fibrosarcoma

Question 8

What is the recommended patient position for optimal insertion of a Ryle's tube?

Accepted Answer

Sitting position with neck slightly flexed

Answer

Left lateral position

Answer

Sitting position with neck slightly extended

Answer

Supine position

Question 9

Which of the following is NOT included in the SIRS criteria?

Accepted Answer

Oliguria

Answer

Tachycardia

Answer

Leukocytosis

Answer

Leukopenia

Question 10

According to NHS protocol, what is the correct sequence for surgical handovers and checks?

Accepted Answer

Sign in, time out, sign out

Answer

Sign out, sign in, time out

Answer

Sign out, time out, sign in

Answer

Sign in, sign out, time out

General Surgery Principles — MCQs

General Surgery Principles — MCQs

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