Nutrition in Surgical Patients Indian Medical PG Practice Questions and MCQs
Practice Indian Medical PG questions for Nutrition in Surgical Patients. These multiple choice questions (MCQs) cover important concepts and help you prepare for your exams.
Nutrition in Surgical Patients Indian Medical PG Question 1: Fluid of choice for shock in a child with severe acute malnutrition + hypoglycemia
- A. Normal saline
- B. Ringer lactate
- C. 10% dextrose
- D. Ringer lactate + 5% dextrose (Correct Answer)
Nutrition in Surgical Patients Explanation: ***Ringer lactate + 5% dextrose***
- This combination provides both **electrolytes** (from Ringer lactate) to help correct **shock** and **glucose** (from 5% dextrose) to address **hypoglycemia** in a child with severe acute malnutrition (SAM).
- Patients with SAM are at a high risk of **hypoglycemia** during shock, making glucose supplementation crucial.
*Normal saline*
- While suitable for initial fluid resuscitation in shock, it does **not contain glucose** and would not address the concomitant hypoglycemia.
- Excessive use of normal saline can also lead to **hyperchloremic metabolic acidosis**, which is undesirable in already compromised patients.
*Ringer lactate*
- Ringer lactate provides **electrolytes** and is a good crystalloid for shock resuscitation, but it **lacks glucose** to correct hypoglycemia.
- In SAM patients, where energy stores are depleted, simply providing Ringer lactate might not be sufficient to prevent or treat hypoglycemia.
*10% dextrose*
- 10% dextrose would effectively treat **hypoglycemia** but is not an appropriate fluid for fluid resuscitation in **shock**.
- It would not adequately expand the intravascular volume or provide the necessary electrolytes for managing shock alone.
Nutrition in Surgical Patients Indian Medical PG Question 2: What is the most definitive indication for surgery in necrotizing enterocolitis?
- A. Pneumatosis intestinalis- Stage IIA of NEC
- B. Pneumoperitoneum- Stage IIIB of NEC (Correct Answer)
- C. Peritonitis- Stage IIIA of NEC
- D. Portal Vein gas- Stage IIB of NEC
Nutrition in Surgical Patients Explanation: ***Pneumoperitoneum- Stage IIIB of NEC***
- **Pneumoperitoneum** (free air in the peritoneal cavity) is the **most definitive indication** for immediate surgical intervention in necrotizing enterocolitis (NEC), as it provides radiological proof of bowel perforation.
- This finding represents advanced disease (**Stage IIIB** according to the **modified Bell's staging criteria**) and is an **absolute indication for surgery**.
- Pneumoperitoneum is detected on plain abdominal radiographs or cross-table lateral films and indicates full-thickness bowel necrosis with perforation.
*Pneumatosis intestinalis- Stage IIA of NEC*
- **Pneumatosis intestinalis** (intramural gas in the bowel wall) is a hallmark radiological sign of NEC but does **not** warrant surgery in Stage IIA.
- Stage IIA is managed with **medical therapy** including NPO (nil per oral), nasogastric decompression, broad-spectrum antibiotics, and supportive care unless there are signs of clinical deterioration or progression to advanced stages.
*Portal Vein gas- Stage IIB of NEC*
- **Portal vein gas** indicates severe bowel ischemia and necrosis and is a concerning prognostic sign associated with advanced NEC (Stage IIB).
- While it signifies severe disease, portal vein gas is **not an absolute indication for surgery** by itself; surgical intervention is based on overall clinical status, presence of peritonitis, or pneumoperitoneum.
*Peritonitis- Stage IIIA of NEC*
- Clinical signs of **peritonitis** (abdominal wall erythema, edema, tenderness, guarding, rigidity) indicate Stage IIIA NEC and **are also an indication for surgery**.
- However, **pneumoperitoneum** is considered the **most definitive** indication as it provides objective radiological evidence of perforation, whereas peritonitis is based on clinical examination which can be challenging in premature neonates.
Nutrition in Surgical Patients Indian Medical PG Question 3: What is the most frequent complication of Total Parenteral Nutrition (TPN)?
- A. Hyperglycemia (Correct Answer)
- B. Rebound hyperglycemia
- C. Hypoglycemia
- D. Hypertriglyceridemia
Nutrition in Surgical Patients Explanation: ***Hyperglycemia***
- **Hyperglycemia** is the most common metabolic complication of TPN due to the high dextrose content, especially in patients with pre-existing glucose intolerance or stress.
- Close monitoring of blood glucose and insulin administration are often necessary to manage this complication.
*Rebound hyperglycemia*
- **Rebound hyperglycemia** typically refers to a surge in blood glucose levels following a period of hypoglycemia, or in response to a sudden cessation of insulin, neither of which is the most frequent primary complication of TPN initiation.
- While TPN can cause hyperglycemia, the term "rebound hyperglycemia" is not the most accurate description for the initial and most frequent TPN-associated glucose abnormality.
*Hypoglycemia*
- **Hypoglycemia** is less common during continuous TPN infusion but can occur if TPN is abruptly discontinued, or if excessive insulin is administered.
- It is not the most frequent complication observed during steady-state TPN administration.
*Hypertriglyceridemia*
- **Hypertriglyceridemia** can occur with TPN, particularly with excessive lipid emulsion administration or in patients with impaired lipid metabolism.
- Although a potential complication, it is not as frequent as hyperglycemia.
Nutrition in Surgical Patients Indian Medical PG Question 4: A patient presents in coma for 20 days, what will be the best way to give him nutrition?
- A. Ryle's tube feeding (Correct Answer)
- B. Feeding via jejunostomy
- C. Parenteral nutrition
- D. Oral feeding
Nutrition in Surgical Patients Explanation: ***Ryle's tube feeding***
- A **Ryle's tube (nasogastric tube)** is the most appropriate method for enteral feeding in a patient who has been in coma for **20 days (~3 weeks)**.
- **Current guidelines** recommend NG tube feeding for durations up to **4-6 weeks**, making it suitable for this patient's timeline.
- NG tube placement is **non-invasive, quick to establish**, and provides effective enteral nutrition while the patient's neurological status is being assessed and managed.
- The gastrointestinal tract is functioning (no contraindication mentioned), making enteral feeding via NG tube the preferred route following the principle: **"If the gut works, use it."**
- Proper positioning (head elevation 30-45°) and monitoring can minimize aspiration risk in comatose patients.
*Feeding via jejunostomy*
- **Jejunostomy** or PEG tube placement is considered for **long-term feeding beyond 4-6 weeks**.
- At 20 days, it is **premature** to proceed with a surgical/endoscopic procedure for feeding access unless there are specific indications (recurrent aspiration despite NG feeding, NG tube intolerance, anticipated prolonged need beyond 6 weeks).
- Jejunostomy requires a surgical procedure with associated risks and is reserved for patients clearly requiring extended nutritional support.
*Parenteral nutrition*
- **Parenteral nutrition** (intravenous feeding) is indicated when the gastrointestinal tract is **non-functional** or enteral access is impossible.
- Since the question doesn't mention GI dysfunction, enteral feeding is preferred as it maintains gut integrity, is more physiological, safer, and more cost-effective.
- Parenteral nutrition carries risks of catheter-related infections, metabolic complications, and gut mucosal atrophy.
*Oral feeding*
- **Oral feeding** is absolutely contraindicated in a comatose patient due to absent protective airway reflexes and extremely high risk of **aspiration pneumonia**.
- A patient in coma cannot safely swallow and protect their airway during oral intake.
Nutrition in Surgical Patients Indian Medical PG Question 5: A young man weighing 65 kg was admitted to the hospital with severe burns in a severe catabolic state. An individual in this state requires 40 kcal per kg body weight per day and 2 gms of protein/kg body weight/day. This young man was given a solution containing 20% glucose and 4.25% protein. If 3000 ml of solution is infused per day, which of the following statements is most accurate regarding the nutritional provision?
- A. The protein provided exceeds the patient's requirement
- B. The protein provided is insufficient for the patient's requirement
- C. The calories provided are insufficient for the patient's needs (Correct Answer)
- D. The solution provides adequate protein and calories for the patient
Nutrition in Surgical Patients Explanation: ***The calories provided are insufficient for the patient's needs***
- The patient requires 40 kcal/kg/day × 65 kg = **2600 kcal/day**
- The solution provides (200 g glucose/L × 4 kcal/g) × 3 L = **2400 kcal/day**, which is 200 kcal less than required (92.3% of requirement)
- This represents a **7.7% caloric deficit**, which in a severe catabolic state with burns is clinically significant
*The protein provided exceeds the patient's requirement*
- The patient requires 2 g/kg/day × 65 kg = **130 g protein/day**
- The solution provides (42.5 g protein/L) × 3 L = **127.5 g protein/day**, which is slightly below, not exceeding, the requirement
*The protein provided is insufficient for the patient's requirement*
- The patient requires **130 g protein/day**
- The solution provides **127.5 g protein/day** (98% of requirement)
- While technically 2.5 g short, this is nearly adequate, but the more critical issue is the caloric deficit
*The solution provides adequate protein and calories for the patient*
- The provided calories (2400 kcal) are **insufficient** for the patient's needs (2600 kcal)
- The protein (127.5 g) is very close to the requirement (130 g) at 98% adequacy
- In severe catabolic states, even modest deficits can impair recovery, making this provision inadequate
Nutrition in Surgical Patients Indian Medical PG Question 6: A 50 year old male is posted for elective laparoscopic cholecystectomy. No history of comorbidities. His surgery is scheduled at 2 PM on the day of surgery. Which of the following is against the ASA guidelines for preoperative fasting
- A. Water at 12:00 PM
- B. Black coffee at 5:30 AM
- C. Pancakes at 10:00 AM (Correct Answer)
- D. A non-clear liquid (e.g., orange juice) at 7:30 AM
Nutrition in Surgical Patients Explanation: **Pancakes at 10:00 AM**
- According to ASA guidelines, the fasting period for solid food is typically **6-8 hours** before surgery. Eating pancakes, which are solid food, at 10:00 AM for a 2:00 PM surgery (4-hour interval) violates this guideline.
- This short fasting period for solids increases the risk of **pulmonary aspiration** during induction of anesthesia.
*Water at 12:00 PM*
- Water is considered a clear liquid, and ASA guidelines typically allow clear liquids until **2 hours** before surgery. Drinking water at 12:00 PM for a 2:00 PM surgery is within these guidelines.
- Rapid gastric emptying of clear liquids minimizes the risk of aspiration.
*Black coffee at 5:30 AM*
- Black coffee is considered a clear liquid, and it is consumed well within the **2-hour** fasting window for clear liquids before a 2:00 PM surgery.
- The absence of milk or cream ensures it is treated as a clear liquid, which empties quickly from the stomach.
*A non-clear liquid (e.g., orange juice) at 7:30 AM*
- Non-clear liquids, such as orange juice, are treated similarly to light meals and generally require a fasting period of **6 hours** before surgery. Drinking orange juice at 7:30 AM for a 2:00 PM surgery (6.5-hour interval) is compliant with these guidelines.
- The protein and pulp in non-clear liquids delay gastric emptying compared to clear liquids.
Nutrition in Surgical Patients Indian Medical PG Question 7: In surgical stress all hormones are increased except:
- A. Insulin (Correct Answer)
- B. Epinephrine
- C. ACTH
- D. Cortisol
Nutrition in Surgical Patients Explanation: ***Insulin***
- While other **stress hormones** increase, **insulin** levels typically **decrease** or remain stable due to increased **insulin resistance** during surgical stress.
- This physiological response aims to maintain **blood glucose** levels for energy during heightened metabolic demands.
*Epinephrine*
- **Epinephrine** (adrenaline) is a key **catecholamine** released during surgical stress, leading to a "fight or flight" response.
- It increases **heart rate**, **blood pressure**, and promotes **gluconeogenesis** to supply quick energy.
*ACTH*
- **Adrenocorticotropic hormone (ACTH)** is released from the **pituitary gland** in response to surgical stress.
- **ACTH** stimulates the adrenal cortex to produce **cortisol**, a critical stress hormone.
*Cortisol*
- **Cortisol** levels significantly rise during surgical stress, mediated by **ACTH** release.
- It plays a crucial role in **modulating inflammation**, **glucose metabolism**, and maintaining **hemodynamic stability**.
Nutrition in Surgical Patients Indian Medical PG Question 8: In trauma, which of the following hormones is/are increased?
a) Epinephrine
b) ACTH
c) Glucagon
d) Parathormone
- A. bc
- B. acd
- C. bcd
- D. abc (Correct Answer)
Nutrition in Surgical Patients Explanation: ***abc***
- Trauma is a significant stressor that triggers the release of **epinephrine** (a), **ACTH** (b), and **glucagon** (c) as part of the body's **fight-or-flight response** and metabolic adaptation.
- **Epinephrine** increases heart rate, blood pressure, and mobilizes energy stores; **ACTH** stimulates cortisol release to manage stress and inflammation; **glucagon** mobilizes glucose to provide energy for tissues.
- **Parathormone** (d) is NOT significantly increased in acute trauma as it primarily regulates calcium homeostasis, not the acute stress response.
*bc*
- This option is incomplete as **epinephrine** (a) is also significantly increased during trauma due to the activation of the sympathetic nervous system.
- While **ACTH** and **glucagon** are elevated, failing to include epinephrine underestimates the full hormonal response to trauma.
*acd*
- This option incorrectly includes **parathormone** (d) as a primary hormone elevated in acute trauma. While calcium regulation is important, parathormone's immediate increase is not a hallmark of the acute stress response.
- It also omits **ACTH** (b), which is a key hormone in the stress axis response.
*bcd*
- This option incorrectly includes **parathormone** (d) which does not typically show a significant immediate increase during acute trauma.
- It also omits **epinephrine** (a), a crucial component of the acute stress response mediated by sympathetic activation.
Nutrition in Surgical Patients Indian Medical PG Question 9: Biological value is used for the assessment of?
- A. Fat quality
- B. Protein quality (Correct Answer)
- C. Carbohydrate quality
- D. None of the options
Nutrition in Surgical Patients Explanation: ***Protein quality***
- **Biological value (BV)** is a measure of the proportion of absorbed protein from a food that is incorporated into the body's proteins.
- It specifically assesses the amount and **proportions of essential amino acids** available for protein synthesis.
*Fat quality*
- Fat quality is typically assessed by its **fatty acid profile** (e.g., saturated, unsaturated, trans fats) and its impact on cardiovascular health.
- BV is not used to evaluate the nutritional quality or absorption of lipids.
*Carbohydrate quality*
- Carbohydrate quality is generally determined by factors like **fiber content**, **glycemic index**, and presence of complex vs. simple sugars.
- BV does not provide information about the carbohydrate composition or metabolic effects of foods.
*None of the options*
- This option is incorrect because biological value is a well-established method for assessing protein quality.
Nutrition in Surgical Patients Indian Medical PG Question 10: A surgeon is about to start a laparoscopic procedure on a patient. The floor nurse asks the surgeon about the identity of the patient, site of the procedure to be performed and any anticipated critical events during the surgery. These questions are a part of the
- A. nurses safety checklist
- B. WHO surgical safety checklist (Correct Answer)
- C. universal precautions checklist
- D. MCI patient safety checklist
Nutrition in Surgical Patients Explanation: **WHO surgical safety checklist**
- The questions about patient identity, procedure site, and anticipated critical events are key components of the **"Sign In"** and **"Time Out"** sections of the **WHO Surgical Safety Checklist**.
- This checklist is designed to improve **patient safety** by ensuring communication and adherence to essential steps before, during, and after surgery, thereby reducing surgical errors.
*nurses safety checklist*
- While nurses play a crucial role in patient safety, there isn't a universally recognized "nurses safety checklist" that specifically encompasses these exact comprehensive surgical verification steps.
- The comprehensive framework described, with its specific questions, aligns more closely with the broader, interdisciplinary **WHO Surgical Safety Checklist**.
*universal precautions checklist*
- **Universal precautions** focus on preventing the transmission of bloodborne pathogens and other infectious agents by treating all bodily fluids as potentially infectious.
- This checklist primarily addresses **infection control** measures and does not cover patient identification, surgical site verification, or critical event anticipation.
*MCI patient safety checklist*
- A "MCI patient safety checklist" is not a widely recognized or standardized medical safety protocol.
- The scenario describes a standard, internationally adopted set of safety checks specifically for surgical procedures, which is the **WHO Surgical Safety Checklist**.
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