Anesthesia for Emergency Surgery Indian Medical PG Practice Questions and MCQs
Practice Indian Medical PG questions for Anesthesia for Emergency Surgery. These multiple choice questions (MCQs) cover important concepts and help you prepare for your exams.
Anesthesia for Emergency Surgery Indian Medical PG Question 1: Which of the following statements are correct regarding primary survey/management of traumatic head injury patient?
I. Ensure adequate oxygenation and circulation
II. Exclude hypoglycaemia
III. Check for mechanism of injury
IV. Check pupil size and response
Select the answer using the code given below :
- A. II, III and IV
- B. I, III and IV
- C. I, II and III
- D. I, II and IV (Correct Answer)
Anesthesia for Emergency Surgery Explanation: ***I, II and IV***
- **Primary survey** in trauma management, including head injury, focuses on immediately life-threatening conditions (Airway, Breathing, Circulation, Disability, Exposure). Ensuring adequate **oxygenation and circulation** (Statement I) is paramount to prevent secondary brain injury.
- Exclude **hypoglycemia** (Statement II) is critical because altered mental status due to low blood sugar can mimic head injury and delay appropriate treatment, making it an essential part of the 'D' (disability) assessment. Checking **pupil size and response** (Statement IV) is also part of the 'D' assessment, providing vital information about potential brain stem compromise or intracranial pressure changes.
*II, III and IV*
- While excluding hypoglycemia and checking pupil response are crucial parts of the primary survey, Statement III, "Check for mechanism of injury," is typically part of the **secondary survey** or initial assessment but not immediately life-saving like ABCD.
- The primary survey prioritizes immediate threats to life, and while understanding the mechanism of injury informs subsequent care, it does not directly address a patient's immediate physiologic stability.
*I, III and IV*
- This option includes checking the mechanism of injury (Statement III) as part of the primary survey, which is generally conducted after the **life-threatening conditions** are addressed.
- It omits the critical step of excluding **hypoglycemia** (Statement II), which is an immediate reversible cause of altered mental status that must be ruled out during the primary assessment.
*I, II and III*
- This option correctly includes ensuring adequate **oxygenation and circulation** (Statement I) and excluding **hypoglycemia** (Statement II) as part of the primary survey.
- However, it incorrectly includes checking for the **mechanism of injury** (Statement III) as a primary survey component and omits checking **pupil size and response** (Statement IV), which is an essential part of the 'Disability' assessment in the primary survey for head injury.
Anesthesia for Emergency Surgery Indian Medical PG Question 2: Muscle relaxant ideal for rapid intubation and short procedures is:
- A. Rocuronium (Correct Answer)
- B. Atracurium
- C. Suxamethonium
- D. Vecuronium
Anesthesia for Emergency Surgery Explanation: ***Rocuronium***
- **Rocuronium** has a rapid onset of action (60-90 seconds) and an intermediate duration of action (30-60 minutes), making it suitable for rapid sequence intubation.
- Its effects can be rapidly reversed by **sugammadex**, allowing for controlled and quick recovery when needed for short procedures.
*Atracurium*
- **Atracurium** has an intermediate onset (2-3 minutes) and duration of action (20-35 minutes), which is slower than ideal for rapid intubation.
- It undergoes **Hofmann elimination** and ester hydrolysis, making it suitable for patients with renal or hepatic dysfunction, but not primarily for rapid onset.
*Suxamethonium*
- **Suxamethonium** (succinylcholine) has the most rapid onset of action (30-60 seconds) among muscle relaxants, historically making it the drug of choice for rapid sequence intubation.
- However, its side effects, such as **malignant hyperthermia**, hyperkalemia, and prolonged paralysis in patients with atypical pseudocholinesterase, limit its use where alternative agents like rocuronium are available and suitable.
*Vecuronium*
- **Vecuronium** has an intermediate onset (2-3 minutes) and duration of action (25-40 minutes), making it too slow for rapid sequence intubation.
- It is often chosen for its minimal cardiovascular effects and moderate duration, making it suitable for procedures where a longer duration of paralysis is acceptable, but not for rapid intubation.
Anesthesia for Emergency Surgery Indian Medical PG Question 3: 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
Anesthesia for Emergency Surgery 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.
Anesthesia for Emergency Surgery Indian Medical PG Question 4: Best guide for the management of Resuscitation is:
- A. Saturation of Oxygen
- B. CVP
- C. Blood pressure
- D. Urine output (Correct Answer)
Anesthesia for Emergency Surgery Explanation: ***Urine output***
- **Urine output** is considered the **gold standard** for assessing adequacy of resuscitation as it directly reflects **end-organ perfusion** and **tissue oxygenation**. A target of **0.5-1 mL/kg/hour** indicates adequate renal perfusion and overall circulatory status.
- It serves as a reliable **endpoint of resuscitation** in trauma and critical care protocols, providing objective evidence that fluid resuscitation has achieved adequate **tissue perfusion** and **microcirculatory flow**.
*Saturation of Oxygen*
- While **oxygen saturation** is crucial for ensuring adequate **oxygen delivery** to tissues, it represents only one component of the oxygen delivery equation and doesn't reflect **tissue perfusion** adequacy.
- Maintaining normal oxygen saturation does not guarantee adequate **end-organ perfusion** if cardiac output or tissue perfusion is compromised during resuscitation.
*CVP*
- **Central venous pressure** has poor correlation with actual **intravascular volume status** and **cardiac preload**, making it an unreliable guide for fluid resuscitation.
- CVP measurements are influenced by multiple factors including **ventilator settings**, **tricuspid valve function**, and **chest wall compliance**, limiting its utility as a resuscitation endpoint.
*Blood pressure*
- While **blood pressure** provides immediate feedback on **circulatory status** and is emphasized in current **ACLS** and **ATLS** protocols as an immediate target, it may not accurately reflect **microcirculatory perfusion**.
- Blood pressure can be maintained through **vasoconstriction** while **end-organ perfusion** remains inadequate, making it less reliable than urine output for assessing true resuscitation adequacy.
Anesthesia for Emergency Surgery Indian Medical PG Question 5: A comatose 28-year-old woman sustained a depressed skull fracture in an automobile collision. She has been unconscious for 6 weeks. Her vital signs are stable and she breathes room air. Following her initial decompressive craniotomy, she has returned to the operating room twice due to intracranial bleeding. Select the best method of physiologic monitoring necessary for the patient.
- A. Central venous catheterization
- B. Pulmonary artery catheterization
- C. Intracranial pressure monitoring (Correct Answer)
- D. Blood-gas monitoring
Anesthesia for Emergency Surgery Explanation: ***Intracranial pressure monitoring***
- This patient has a history of **depressed skull fracture**, **decompressive craniotomy**, and **intracranial bleeding**, all of which significantly increase the risk of elevated **intracranial pressure (ICP)**.
- Monitoring ICP is crucial for detecting and managing cerebral edema or hematoma expansion, preventing secondary brain injury in a comatose patient.
*Central venous catheterization*
- While useful for monitoring **central venous pressure (CVP)** and administering fluids/medications, it does not directly assess cerebral perfusion or intracranial dynamics.
- CVP alone is a poor indicator of ICP, and changes in CVP do not reliably reflect changes in cerebral perfusion pressure (CPP).
*Pulmonary artery catheterization*
- This provides detailed hemodynamic information including **cardiac output**, **pulmonary artery pressure**, and **pulmonary capillary wedge pressure**, primarily for assessing cardiac function and fluid status.
- It is overly invasive and unnecessary for a patient with stable vital signs whose primary concern is neurological status.
*Blood-gas monitoring*
- **Arterial blood gas (ABG)** analysis assesses **oxygenation**, **ventilation**, and **acid-base balance**, which are important for overall patient management.
- While important, ABG monitoring does not directly provide information about ICP or cerebral perfusion, which is the most critical parameter in this specific neurological injury scenario.
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