Fast-Track Recovery Protocols — MCQs
Which anesthetic agent is known for the fastest induction and recovery?
Patient with BMI 40 presents for emergency surgery. All are correct about airway management EXCEPT:
Postoperative third-space accumulation should be managed by intravenous fluid with
After a major oral surgery, the acute catabolic phase lasts for?
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
Ambulatory patients after a disaster are categorized into what color of triage?
Which of the following is the FIRST-LINE antiemetic drug most commonly used for post-operative nausea and vomiting (PONV) prophylaxis?
A 55-year-old male, known smoker, complains of calf pain while walking. He experiences calf pain while walking but can continue walking with effort. Which grade of claudication does this patient fall under?
Which drug is commonly used for outpatient department (OPD) analgesia?
Which of the following agents is used for the treatment of post operative shivering?
Fast-Track Recovery Protocols Indian Medical PG Practice Questions and MCQs
Question 1: Which anesthetic agent is known for the fastest induction and recovery?
- A. Halothane
- B. Enflurane
- C. Desflurane
- D. N2O (Correct Answer)
Explanation: ***N2O*** - **Nitrous oxide** has a very **low blood-gas partition coefficient** (0.47), meaning it quickly saturates the blood and brain, leading to rapid induction and recovery. - Its **low solubility** allows for fast changes in anesthetic depth as it moves rapidly in and out of the bloodstream. *Desflurane* - While Desflurane also has a **low blood-gas partition coefficient** (0.42) and provides rapid induction and recovery, **N2O** is generally recognized as having the fastest kinetics. - Desflurane's volatility often requires a specialized heated vaporizer due to its **low boiling point**. *Halothane* - Halothane has a **higher blood-gas partition coefficient** (2.4) compared to N2O and desflurane, resulting in a slower induction and recovery time. - It is associated with potential **hepatotoxicity** (halothane hepatitis) and is no longer widely used. *Enflurane* - Enflurane has an intermediate **blood-gas partition coefficient** (1.9), making its induction and recovery slower than N2O, desflurane, and sevoflurane. - It can cause **seizures** at high concentrations and is also largely replaced by newer agents.
Question 2: Patient with BMI 40 presents for emergency surgery. All are correct about airway management EXCEPT:
- A. Extended ramping
- B. Avoid cricoid pressure (Correct Answer)
- C. Rapid sequence induction
- D. Avoid preoxygenation
Explanation: ***Avoid cricoid pressure*** - While **cricoid pressure** (Sellick's maneuver) is used to prevent **aspiration** by compressing the esophagus, its effectiveness in **obese patients** is highly debated and often hindered by excess neck tissue. - In obese patients, cricoid pressure can actually worsen the view during laryngoscopy, making intubation more difficult and potentially causing airway trauma. *Extended ramping* - **Ramping** the patient, where the head and shoulders are elevated, is crucial in **obese patients** to align the **oral, pharyngeal, and laryngeal axes**. - This position improves the view during laryngoscopy and facilitates successful intubation by effectively displacing excess tissue. *Rapid sequence induction* - **Rapid sequence induction (RSI)** is often indicated in **obese patients** undergoing emergency surgery due to their increased risk of **gastric reflux** and **pulmonary aspiration**. - RSI involves administering a sedative and a paralytic agent in rapid succession, followed immediately by intubation, to minimize the time the airway is unprotected. *Avoid preoxygenation* - **Preoxygenation** is essential in **obese patients** to maximize their **oxygen reserves** before intubation. - Obese patients have reduced **functional residual capacity (FRC)** and increased **oxygen consumption**, making them desaturate rapidly during apnea, so preoxygenation significantly prolongs safe apnea time.
Question 3: Postoperative third-space accumulation should be managed by intravenous fluid with
- A. Albumin
- B. Normal saline (Correct Answer)
- C. Fluid restriction
- D. Dextrose in water
Explanation: ***Normal saline*** - **Third-space accumulation** leads to fluid shifts from the intravascular space to the interstitial space, commonly seen after trauma or surgery, resulting in **hypovolemia**. - **Isotonic solutions** like normal saline help replenish the lost intravascular volume and maintain blood pressure without shifting more fluid into the third space. *Albumin* - While albumin can increase oncotic pressure and draw fluid back into the intravascular space, it is typically reserved for cases of **severe hypoalbuminemia** or when crystalloids alone are insufficient. - Using albumin in the setting of acute third-space loss without clear indications of hypoalbuminemia may not be the initial or most appropriate intervention. *Fluid restriction* - **Fluid restriction** would worsen the patient's hypovolemia as third-space losses deplete the effective circulating volume of the patient. - This approach is appropriate for conditions like **heart failure** or **SIADH**, where there is true fluid excess or impaired excretion, not for hypovolemic states due to fluid shifts. *Dextrose in water* - Dextrose in water is a **hypotonic solution** that would rapidly distribute into the intracellular and interstitial compartments and may contribute to worsening edema in the third space. - It does not effectively expand intravascular volume and can lead to **hyponatremia** if administered in large quantities.
Question 4: After a major oral surgery, the acute catabolic phase lasts for?
- A. 1-2 days
- B. 2-5 days (Correct Answer)
- C. 4-7 days
- D. 5-10 days
Explanation: ***2-5 days*** - The **acute catabolic phase** following major surgery, including oral surgery, typically lasts for **2 to 5 days**. - During this phase, the body mobilizes energy stores and protein to cope with surgical stress, leading to a net loss of lean body mass. *1-2 days* - This timeframe represents the **immediate post-operative period**, but the acute catabolic response often extends beyond 1-2 days. - While some catabolic changes begin immediately, the peak catabolic phase usually occurs slightly later. *4-7 days* - While some catabolic effects might still be present, the most intense **acute catabolic phase** usually starts to subside by day 4 or 5. - This period often marks the transition towards the **adaptive phase** of recovery. *5-10 days* - By this point, the patient is generally entering the **adaptive or anabolic phase** of recovery, where the body begins to rebuild tissues and restore energy reserves. - The most acute catabolic processes have significantly diminished.
Question 5: 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
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.
Question 6: Ambulatory patients after a disaster are categorized into what color of triage?
- A. Red
- B. Yellow
- C. Green (Correct Answer)
- D. Black
Explanation: ***Green*** - **Green tag** is for the walking wounded, meaning those with minor injuries who can move independently and do not require immediate medical attention. - These patients can often assist with **their own care** or aid others, and their treatment can be delayed. *Red* - **Red tag** patients have critical, life-threatening injuries that require immediate intervention to save life or limb. - This category includes conditions like **severe bleeding**, shock, or airway compromise. *Yellow* - **Yellow tag** is assigned to patients with serious injuries that are not immediately life-threatening but require definitive treatment within a few hours. - Examples include **stable fractures**, moderate burns, or significant but controlled bleeding. *Black* - **Black tag** indicates patients who are deceased or have injuries so severe that survival is unlikely even with maximal medical care. - Resources are diverted from these patients to those with a higher chance of survival, to **maximize overall saved lives**.
Question 7: Which of the following is the FIRST-LINE antiemetic drug most commonly used for post-operative nausea and vomiting (PONV) prophylaxis?
- A. Lorazepam
- B. Metoclopramide
- C. Promethazine
- D. Ondansetron (Correct Answer)
Explanation: ***Ondansetron*** - **Ondansetron** is a **5-HT3 receptor antagonist** and is considered a first-line agent due to its high efficacy and favorable side effect profile in preventing PONV. - It works by blocking serotonin receptors in the **chemoreceptor trigger zone** and the **gastrointestinal tract**, reducing the sensation of nausea and vomiting. *Lorazepam* - **Lorazepam** is a **benzodiazepine** primarily used for its **anxiolytic** and **sedative effects**, and sometimes as an adjunct for refractory nausea, but not as a first-line antiemetic for PONV prophylaxis. - While it can help indirectly by reducing anxiety, it does not directly target the key pathways involved in PONV as effectively as 5-HT3 antagonists. *Phenytoin* - **Phenytoin** is an **anticonvulsant** medication used to prevent seizures and has no role in the direct treatment or prophylaxis of PONV. - It primarily acts on voltage-gated sodium channels in neurons and does not possess antiemetic properties. *Metoclopramide* - **Metoclopramide** is a **dopamine D2 receptor antagonist** and a **prokinetic agent** that can be used for PONV, particularly when gastric stasis is a concern. - However, it is generally considered a second-line agent due to the risk of **extrapyramidal side effects**, especially with higher doses or prolonged use. *Promethazine* - **Promethazine** is a **first-generation antihistamine** with **antidopaminergic** and **anticholinergic properties** that can be effective for nausea and vomiting. - It is often used as a rescue antiemetic or in combination therapy, but its sedative effects and potential for extrapyramidal symptoms make it less preferable as a first-line prophylactic agent compared to ondansetron.
Question 8: A 55-year-old male, known smoker, complains of calf pain while walking. He experiences calf pain while walking but can continue walking with effort. Which grade of claudication does this patient fall under?
- A. Grade I (Mild claudication)
- B. Grade II (Moderate claudication) (Correct Answer)
- C. Grade III (Severe claudication)
- D. Grade IV (Ischemic rest pain)
Explanation: ***Grade II (Moderate claudication)*** - **Grade II claudication** is characterized by **intermittent claudication** where the patient experiences pain while walking but can **continue walking with effort**. - This level of claudication reflects a moderate degree of peripheral arterial disease, where blood flow is sufficiently compromised to cause pain with exertion but not severe enough to force immediate cessation of activity. - The patient in this scenario can continue ambulation despite discomfort, which is the defining feature of this grade. *Grade I (Mild claudication)* - **Grade I claudication** involves discomfort or pain that the patient can **tolerate without significantly altering their gait or pace**. - In this stage, the pain is minimal, and the patient may perceive it as a dull ache or mild fatigue rather than true pain. - Walking can continue without significant effort or limitation. *Grade III (Severe claudication)* - **Grade III claudication** is marked by pain that is **severe enough to stop the patient from walking within a short distance** (typically less than 200 meters). - The pain forces the patient to rest and recover before they can resume walking. - This represents significant functional limitation in daily activities. *Grade IV (Ischemic rest pain)* - **Grade IV**, also known as **critical limb ischemia**, involves **pain even at rest**, especially in the feet or toes, often worsening at night when the limb is elevated. - This stage indicates severe arterial obstruction and is frequently associated with **ulcers, non-healing wounds, or gangrene**. - This represents advanced peripheral arterial disease requiring urgent intervention. **Note:** This grading system is a simplified clinical classification. The standard medical classifications for peripheral arterial disease are the **Fontaine classification** (Stages I-IV) and **Rutherford classification** (Categories 0-6).
Question 9: Which drug is commonly used for outpatient department (OPD) analgesia?
- A. Diclofenac
- B. Ibuprofen
- C. Paracetamol (Correct Answer)
- D. Tramadol
Explanation: ***Paracetamol*** - It is a widely used and generally **safe analgesic** and antipyretic often prescribed for mild to moderate pain in an outpatient setting. - Its favorable side effect profile and availability as an **over-the-counter (OTC)** medication make it a first-choice drug for many common pain conditions. *Diclofenac* - While it is an effective NSAID used for pain and inflammation, its use can be associated with **gastrointestinal side effects** like ulcers and bleeding, as well as cardiovascular risks. - It is often reserved for more significant inflammatory pain or when other analgesics are insufficient, and may require more careful monitoring in an outpatient setting. *Ibuprofen* - Similar to diclofenac, Ibuprofen is an **NSAID** which is effective for pain and inflammation. However, it also carries risks of **gastrointestinal irritation** and renal side effects, especially with prolonged use or in certain patient populations. - While available OTC, its use for routine outpatient analgesia may be less preferred than paracetamol in some cases due to its GI and renal side effect profile. *Tramadol* - Tramadol is a **central acting opioid analgesic** with a higher potential for side effects such as nausea, dizziness, constipation, and the risk of dependence or abuse. - It is typically reserved for moderate to severe pain that is not adequately managed by non-opioid analgesics, and its prescription often involves more stringent monitoring than paracetamol.
Question 10: Which of the following agents is used for the treatment of post operative shivering?
- A. Atropine
- B. Thiopentone
- C. Pethidine (Correct Answer)
- D. Suxamethonium
Explanation: ***Pethidine*** - **Pethidine (meperidine)** is a **synthetic opioid** known for its **mu-receptor agonism** and weak anticholinergic properties, making it effective in treating **post-operative shivering**. - Its mechanism in reducing shivering is thought to involve modulation of the **thermoregulatory center** in the hypothalamus. *Atropine* - **Atropine** is an **anticholinergic drug** that primarily blocks muscarinic acetylcholine receptors, leading to effects like increased heart rate and decreased secretions. - It does not directly act on the thermoregulatory centers or muscle activity responsible for shivering. *Thiopentone* - **Thiopentone** is a **barbiturate** used as an intravenous anesthetic, primarily for induction of anesthesia. - While it has CNS depressant effects, it is not indicated or effective for the specific treatment of post-operative shivering. *Suxamethonium* - **Suxamethonium (succinylcholine)** is a **depolarizing neuromuscular blocker** used to induce muscle paralysis, typically for intubation. - It would prevent shivering by paralyzing skeletal muscles, but this is a dangerous and inappropriate treatment for shivering due to its profound respiratory depressant effects.
Want unlimited practice?
Get full access to all questions, explanations, and performance tracking.
Start For Free