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100 MCQs on Operating Theatre (OT) in ICU and Emergency Settings
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Question 1
What is the primary purpose of maintaining a sterile field in the operating theatre?
A) To reduce noise levels
B) To prevent surgical site infections
C) To improve visibility for the surgeon
D) To regulate room temperature
Correct Answer: B) To prevent surgical site infections
Explanation: Maintaining a sterile field minimizes microbial contamination, reducing the risk of surgical site
infections (SSIs), which can lead to severe complications in ICU patients. Noise, visibility, and temperature are
secondary concerns.
Question 2
Which piece of equipment is essential for monitoring oxygen saturation during emergency surgery?
A) Electrocardiogram (ECG)
B) Pulse oximeter
C) Defibrillator
D) Endotracheal tube
Correct Answer: B) Pulse oximeter
Explanation: A pulse oximeter measures oxygen saturation (SpO2), critical for ensuring adequate oxygenation
during surgery. ECG monitors heart activity, defibrillators treat cardiac arrest, and endotracheal tubes secure the
airway.
Question 3
In emergency trauma surgery, what is the first step in the primary survey?
A) Administer pain relief
B) Assess airway patency
C) Perform a neurological exam
D) Check for external bleeding
Correct Answer: B) Assess airway patency
Explanation: The primary survey follows the ABCDE approach (Airway, Breathing,
Circulation, Disability, Exposure). Ensuring airway patency is the first priority to
support breathing and oxygenation.
Question 4
What is the role of the circulating nurse in the OT?
A) Performing the surgery
B) Managing non-sterile tasks and documentation
C) Administering anesthesia
D) Handing sterile instruments to the surgeon
Correct Answer: B) Managing non-sterile tasks and documentation
Explanation: The circulating nurse operates outside the sterile field, handling
tasks like fetching supplies, documenting procedures, and ensuring safety.
Surgery, anesthesia, and sterile instrument handling are roles of the surgeon,
anesthesiologist, and scrub nurse, respectively.
Question 5
Which type of anesthesia is most commonly used in emergency surgeries requiring rapid induction?
A) Local anesthesia
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B) Regional anesthesia
C) General anesthesia
D) Spinal anesthesia
Correct Answer: C) General anesthesia
Explanation: General anesthesia provides rapid induction, unconsciousness, and muscle relaxation, ideal for
urgent surgeries. Local, regional, and spinal anesthesia are slower or less suitable for emergencies.
Question 6
What is a critical consideration when preparing the OT for an emergency cesarean section?
A) Ensuring a quiet environment
B) Availability of neonatal resuscitation equipment
C) Using dim lighting
D) Limiting the surgical team to one surgeon
Correct Answer: B) Availability of neonatal resuscitation equipment
Explanation: Neonatal resuscitation equipment is essential for managing potential newborn complications, such as
respiratory distress, during an emergency cesarean. Other options are not critical priorities.
Question 7
Which is a common complication in ICU patients post-surgery?
A) Seasonal allergies
B) Postoperative delirium
C) Chronic back pain
D) Dental caries
Correct Answer: B) Postoperative delirium
Explanation: Postoperative delirium is common in ICU patients, especially
the elderly, due to anesthesia, pain, or critical illness. Allergies, back pain,
and dental issues are unrelated to typical postoperative ICU care.
Question 8
What is the purpose of the WHO Surgical Safety Checklist in the OT?
A) To track surgical instrument inventory
B) To improve patient safety and reduce errors
C) To train new surgical staff
D) To document postoperative outcomes
Correct Answer: B) To improve patient safety and reduce errors
Explanation: The WHO Surgical Safety Checklist ensures critical steps are
followed, reducing errors like wrong-site surgery. It’s not for inventory,
training, or postoperative documentation.
Question 9
Which vital sign is most critical to monitor during an emergency
craniotomy?
A) Blood glucose level
B) Intracranial pressure (ICP)
C) Body temperature
D) Respiratory rate
Correct Answer: B) Intracranial pressure (ICP)
Explanation: Monitoring ICP is critical in craniotomy to prevent brain
herniation and ensure cerebral perfusion, especially in emergencies like
traumatic brain injury. Other signs are secondary.
Question 10
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What is the primary goal of damage control surgery in emergency trauma?
A) To fully repair all injuries
B) To stabilize the patient and prevent further deterioration
C) To perform cosmetic reconstruction
D) To remove all foreign objects
Correct Answer: B) To stabilize the patient and prevent further deterioration
Explanation: Damage control surgery addresses life-threatening injuries (e.g., bleeding) to stabilize the patient for
ICU care. Full repair, reconstruction, or object removal are secondary.
Question 11
Which gas is commonly used to maintain anesthesia during prolonged surgeries?
A) Oxygen
B) Nitrous oxide
C) Carbon dioxide
D) Nitrogen
Correct Answer: B) Nitrous oxide
Explanation: Nitrous oxide is often used with other agents to maintain anesthesia due to its rapid onset and offset.
Oxygen supports respiration, while carbon dioxide and nitrogen are not used for anesthesia.
Question 12
What is the primary purpose of preoperative antibiotic prophylaxis in the OT?
A) To treat existing infections
B) To prevent postoperative infections
C) To reduce postoperative pain
D) To enhance wound healing
Correct Answer: B) To prevent postoperative infections
Explanation: Preoperative antibiotics reduce the risk of SSIs by targeting potential
pathogens. They are not for treating existing infections, pain, or wound healing.
Question 13
Which device is used to control bleeding during emergency surgery?
A) Suction catheter
B) Electrocautery
C) Pulse oximeter
D) Ventilator
Correct Answer: B) Electrocautery
Explanation: Electrocautery uses electrical energy to coagulate blood vessels,
controlling bleeding. Suction removes fluids, pulse oximeters monitor oxygen, and
ventilators support breathing.
Question 14
In the OT, what does the term “time-out” refer to?
A) A break for the surgical team
B) A pause to verify patient and procedure details
C) A delay in surgery due to equipment failure
D) A timeout for anesthesia induction
Correct Answer: B) A pause to verify patient and procedure details
Explanation: The time-out, part of the WHO Surgical Safety Checklist, verifies patient identity, procedure, and site
to prevent errors. It’s not a break, delay, or anesthesia-related pause.
Question 15
What is a key risk factor for postoperative pulmonary complications in ICU patients?
A) High blood pressure
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B) Prolonged mechanical ventilation
C) Low cholesterol levels
D) Mild fever
Correct Answer: B) Prolonged mechanical ventilation
Explanation: Prolonged mechanical ventilation increases the risk of complications like ventilator-associated
pneumonia. Hypertension, low cholesterol, or mild fever are less directly related.
Question 16
Which team member is responsible for administering anesthesia in the OT?
A) Scrub nurse
B) Anesthesiologist
C) Circulating nurse
D) Surgical technician
Correct Answer: B) Anesthesiologist
Explanation: The anesthesiologist administers and monitors anesthesia. Scrub and
circulating nurses handle surgical tasks, and technicians assist with equipment.
Question 17
What is the purpose of a surgical drape in the OT?
A) To keep the patient warm
B) To maintain a sterile barrier
C) To absorb blood loss
D) To support the patient’s position
Correct Answer: B) To maintain a sterile barrier
Explanation: Surgical drapes create a sterile barrier around the surgical site to
prevent contamination. Warming, absorption, or positioning are secondary functions.
Question 18
Which condition requires immediate surgical intervention in an emergency setting?
A) Chronic arthritis
B) Acute appendicitis
C) Mild asthma
D) Stable angina
Correct Answer: B) Acute appendicitis
Explanation: Acute appendicitis is a surgical emergency due to the risk of rupture and peritonitis. Arthritis, asthma,
and stable angina are typically managed non-surgically.
Question 19
What is the primary function of a crash cart in the OT?
A) To store surgical instruments
B) To provide emergency resuscitation equipment
C) To transport patients
D) To hold sterile drapes
Correct Answer: B) To provide emergency resuscitation equipment
Explanation: A crash cart contains equipment and medications (e.g., defibrillator, drugs) for immediate
resuscitation during cardiac or respiratory arrest.
Question 20
Which monitoring parameter is critical during emergency cardiac surgery?
A) Blood glucose
B) Cardiac output
C) Body temperature
D) Urine output
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100 MCQs on Operating Theatre (OT) in ICU and Emergency Settings
Join WhatsApp Channel For More Updates
Question 1
What is the primary purpose of maintaining a sterile field in the operating theatre?
A) To reduce noise levels
B) To prevent surgical site infections
C) To improve visibility for the surgeon
D) To regulate room temperature
Correct Answer: B) To prevent surgical site infections
Explanation: Maintaining a sterile field minimizes microbial contamination, reducing the risk of surgical site
infections (SSIs), which can lead to severe complications in ICU patients. Noise, visibility, and temperature are
secondary concerns.
Question 2
Which piece of equipment is essential for monitoring oxygen saturation during emergency surgery?
A) Electrocardiogram (ECG)
B) Pulse oximeter
C) Defibrillator
D) Endotracheal tube
Correct Answer: B) Pulse oximeter
Explanation: A pulse oximeter measures oxygen saturation (SpO2), critical for ensuring adequate oxygenation
during surgery. ECG monitors heart activity, defibrillators treat cardiac arrest, and endotracheal tubes secure the
airway.
Question 3
In emergency trauma surgery, what is the first step in the primary survey?
A) Administer pain relief
B) Assess airway patency
C) Perform a neurological exam
D) Check for external bleeding
Correct Answer: B) Assess airway patency
Explanation: The primary survey follows the ABCDE approach (Airway, Breathing,
Circulation, Disability, Exposure). Ensuring airway patency is the first priority to
support breathing and oxygenation.
Question 4
What is the role of the circulating nurse in the OT?
A) Performing the surgery
B) Managing non-sterile tasks and documentation
C) Administering anesthesia
D) Handing sterile instruments to the surgeon
Correct Answer: B) Managing non-sterile tasks and documentation
Explanation: The circulating nurse operates outside the sterile field, handling
tasks like fetching supplies, documenting procedures, and ensuring safety.
Surgery, anesthesia, and sterile instrument handling are roles of the surgeon,
anesthesiologist, and scrub nurse, respectively.
Question 5
Which type of anesthesia is most commonly used in emergency surgeries requiring rapid induction?
A) Local anesthesia
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B) Regional anesthesia
C) General anesthesia
D) Spinal anesthesia
Correct Answer: C) General anesthesia
Explanation: General anesthesia provides rapid induction, unconsciousness, and muscle relaxation, ideal for
urgent surgeries. Local, regional, and spinal anesthesia are slower or less suitable for emergencies.
Question 6
What is a critical consideration when preparing the OT for an emergency cesarean section?
A) Ensuring a quiet environment
B) Availability of neonatal resuscitation equipment
C) Using dim lighting
D) Limiting the surgical team to one surgeon
Correct Answer: B) Availability of neonatal resuscitation equipment
Explanation: Neonatal resuscitation equipment is essential for managing potential newborn complications, such as
respiratory distress, during an emergency cesarean. Other options are not critical priorities.
Question 7
Which is a common complication in ICU patients post-surgery?
A) Seasonal allergies
B) Postoperative delirium
C) Chronic back pain
D) Dental caries
Correct Answer: B) Postoperative delirium
Explanation: Postoperative delirium is common in ICU patients, especially
the elderly, due to anesthesia, pain, or critical illness. Allergies, back pain,
and dental issues are unrelated to typical postoperative ICU care.
Question 8
What is the purpose of the WHO Surgical Safety Checklist in the OT?
A) To track surgical instrument inventory
B) To improve patient safety and reduce errors
C) To train new surgical staff
D) To document postoperative outcomes
Correct Answer: B) To improve patient safety and reduce errors
Explanation: The WHO Surgical Safety Checklist ensures critical steps are
followed, reducing errors like wrong-site surgery. It’s not for inventory,
training, or postoperative documentation.
Question 9
Which vital sign is most critical to monitor during an emergency
craniotomy?
A) Blood glucose level
B) Intracranial pressure (ICP)
C) Body temperature
D) Respiratory rate
Correct Answer: B) Intracranial pressure (ICP)
Explanation: Monitoring ICP is critical in craniotomy to prevent brain
herniation and ensure cerebral perfusion, especially in emergencies like
traumatic brain injury. Other signs are secondary.
Question 10
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What is the primary goal of damage control surgery in emergency trauma?
A) To fully repair all injuries
B) To stabilize the patient and prevent further deterioration
C) To perform cosmetic reconstruction
D) To remove all foreign objects
Correct Answer: B) To stabilize the patient and prevent further deterioration
Explanation: Damage control surgery addresses life-threatening injuries (e.g., bleeding) to stabilize the patient for
ICU care. Full repair, reconstruction, or object removal are secondary.
Question 11
Which gas is commonly used to maintain anesthesia during prolonged surgeries?
A) Oxygen
B) Nitrous oxide
C) Carbon dioxide
D) Nitrogen
Correct Answer: B) Nitrous oxide
Explanation: Nitrous oxide is often used with other agents to maintain anesthesia due to its rapid onset and offset.
Oxygen supports respiration, while carbon dioxide and nitrogen are not used for anesthesia.
Question 12
What is the primary purpose of preoperative antibiotic prophylaxis in the OT?
A) To treat existing infections
B) To prevent postoperative infections
C) To reduce postoperative pain
D) To enhance wound healing
Correct Answer: B) To prevent postoperative infections
Explanation: Preoperative antibiotics reduce the risk of SSIs by targeting potential
pathogens. They are not for treating existing infections, pain, or wound healing.
Question 13
Which device is used to control bleeding during emergency surgery?
A) Suction catheter
B) Electrocautery
C) Pulse oximeter
D) Ventilator
Correct Answer: B) Electrocautery
Explanation: Electrocautery uses electrical energy to coagulate blood vessels,
controlling bleeding. Suction removes fluids, pulse oximeters monitor oxygen, and
ventilators support breathing.
Question 14
In the OT, what does the term “time-out” refer to?
A) A break for the surgical team
B) A pause to verify patient and procedure details
C) A delay in surgery due to equipment failure
D) A timeout for anesthesia induction
Correct Answer: B) A pause to verify patient and procedure details
Explanation: The time-out, part of the WHO Surgical Safety Checklist, verifies patient identity, procedure, and site
to prevent errors. It’s not a break, delay, or anesthesia-related pause.
Question 15
What is a key risk factor for postoperative pulmonary complications in ICU patients?
A) High blood pressure
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B) Prolonged mechanical ventilation
C) Low cholesterol levels
D) Mild fever
Correct Answer: B) Prolonged mechanical ventilation
Explanation: Prolonged mechanical ventilation increases the risk of complications like ventilator-associated
pneumonia. Hypertension, low cholesterol, or mild fever are less directly related.
Question 16
Which team member is responsible for administering anesthesia in the OT?
A) Scrub nurse
B) Anesthesiologist
C) Circulating nurse
D) Surgical technician
Correct Answer: B) Anesthesiologist
Explanation: The anesthesiologist administers and monitors anesthesia. Scrub and
circulating nurses handle surgical tasks, and technicians assist with equipment.
Question 17
What is the purpose of a surgical drape in the OT?
A) To keep the patient warm
B) To maintain a sterile barrier
C) To absorb blood loss
D) To support the patient’s position
Correct Answer: B) To maintain a sterile barrier
Explanation: Surgical drapes create a sterile barrier around the surgical site to
prevent contamination. Warming, absorption, or positioning are secondary functions.
Question 18
Which condition requires immediate surgical intervention in an emergency setting?
A) Chronic arthritis
B) Acute appendicitis
C) Mild asthma
D) Stable angina
Correct Answer: B) Acute appendicitis
Explanation: Acute appendicitis is a surgical emergency due to the risk of rupture and peritonitis. Arthritis, asthma,
and stable angina are typically managed non-surgically.
Question 19
What is the primary function of a crash cart in the OT?
A) To store surgical instruments
B) To provide emergency resuscitation equipment
C) To transport patients
D) To hold sterile drapes
Correct Answer: B) To provide emergency resuscitation equipment
Explanation: A crash cart contains equipment and medications (e.g., defibrillator, drugs) for immediate
resuscitation during cardiac or respiratory arrest.
Question 20
Which monitoring parameter is critical during emergency cardiac surgery?
A) Blood glucose
B) Cardiac output
C) Body temperature
D) Urine output
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