Respiratory and Airway Management Practice Questions

Q: Mallampati test is used for the assessment of :

Airway. ***Airway*** - The **Mallampati test** is a widely used bedside test to assess the **visibility of the soft palate, uvula, tonsillar pillars, and tongue** within the oral cavity. - This assessment helps in predicting the **ease of intubation** and the potential for a difficult airway during anesthesia. *Tongue size* - While the Mallampati test indirectly considers the relative size of the tongue by visualizing how much of the pharynx it obstructs, its primary purpose is not to quantify **tongue size** independently. - The test assesses the **overall oral cavity geometry** for airway management, not just a single anatomical dimension. *Ability to protrude jaw* - The ability to protrude the jaw, or **mandibular protrusion**, is a different airway assessment parameter used to evaluate potential difficulty with intubation. - It is often assessed with the **upper lip bite test** or other maneuvers, not the Mallampati classification. *Breath hold time* - **Breath-hold time** is a measure related to respiratory function and patient cooperation, and it has no direct relevance to the Mallampati test. - The Mallampati test is a **visual assessment** of oral pharyngeal structures at rest or with phonation, not a dynamic respiratory measurement.

Q: Preoperative Samsoon and Young modified, Mallampati test is used for assessing:

Difficulty in intubation. ***Difficulty in intubation*** - The **Mallampati test** classifies the visibility of pharyngeal structures, which directly correlates with the **likelihood of difficult intubation**. - A higher Mallampati score (e.g., Class III or IV) indicates **less visibility of the soft palate, uvula, and fauces**, suggesting potential challenges during airway management. *Preoperative nutrition status of patient* - Preoperative nutritional status is assessed using methods like **albumin levels, BMI, and nutritional risk screening tools**, not the Mallampati score. - While patient health influences surgery, the Mallampati test is specifically for **airway anatomy**. *Patient's overall fitness for surgery* - Overall fitness for surgery involves a comprehensive assessment of **cardiac, pulmonary, renal, and metabolic health**, often using tools like the ASA physical status classification. - The Mallampati test focuses solely on **airway assessment** and does not provide a global measure of surgical fitness. *Blood requirement during surgery* - Blood requirements during surgery are estimated based on the **type of surgery, anticipated blood loss, patient's hemoglobin levels, and coagulation status**, not the Mallampati test. - The Mallampati test is entirely unrelated to **hemostasis or transfusion needs**.

Q: Rapid Sequence Induction is indicated in:

Emergency surgery for intestinal obstruction. ***Emergency surgery for intestinal obstruction*** - Rapid Sequence Induction (RSI) is indicated in situations where there is a high risk of **pulmonary aspiration** of gastric contents, such as in **intestinal obstruction**, due to a full stomach or impaired gastric emptying. - The goal of RSI is to achieve rapid intubation while minimizing the risk of aspiration by using a specific sequence of medications and techniques (e.g., cricoid pressure). *Cardiopulmonary bypass surgery* - This is an **elective procedure** where patients are typically fasted and have time for a thorough pre-operative assessment and standard induction. - While significant, it does not inherently carry the same immediate high risk of aspiration as an emergency with a full stomach. *Elective open hernia surgery* - This is an **elective procedure** where the patient can be properly fasted, significantly reducing the risk of a full stomach. - A standard, controlled anesthetic induction is generally preferred, allowing for gradual intubation and ventilation. *Elective laparoscopic surgery* - Similar to elective open surgery, patients undergoing **elective laparoscopic procedures** are properly fasted. - The primary concern in laparoscopic surgery is often related to pneumoperitoneum and its effects, rather than a high aspiration risk during induction if fasting guidelines are followed.

Q: What is the pressure required to open the shown in the image?

Pulse present, breath absent. ***Pulse present, breath absent*** - The image shown is depicting a scenario where a person has a **detectable pulse** but is not breathing, indicating respiratory arrest while the heart is still functioning. - This scenario specifically calls for **rescue breaths** (artificial ventilation) without chest compressions, as the heart is still circulating blood. *Pulse absent, breath present* - This situation is highly unlikely as **breathing requires cardiac output** to supply oxygen to respiratory muscles. - If a patient is breathing, they generally have a pulse, even if it is weak. *Pulse & breath present* - This indicates a conscious and stable individual, or someone who is unconscious but still breathing and has a pulse. **CPR or rescue breaths are not needed** in this case. - The patient would likely need monitoring and assessment for other medical issues. *Pulse and breath both not found* - This scenario describes **cardiac arrest**, requiring immediate **cardiopulmonary resuscitation (CPR)** which includes both chest compressions and rescue breaths. - This is a more critical situation than just respiratory arrest.

Q: In which clinical scenario would you find a patient requiring the vital signs assessment technique shown in the image?

Pulse present, breath absent. ***Pulse present, breath absent*** - The image depicts a **mouth-to-mouth resuscitation** technique, specifically rescue breaths being administered by one person to another. - This technique is applied when a person has a **detectable pulse** but is **not breathing** or is only gasping, indicating respiratory arrest while the heart is still circulating blood. *Pulse absent, breath present* - This scenario would represent **cardiac arrest** where the heart has stopped, but the person is still attempting to breathe. This is a rare, transient state. - In such a case, the primary intervention would be **chest compressions**, not just rescue breathing, as circulation is the immediate priority. *Pulse and breath both not present* - This describes **cardiopulmonary arrest (CPA)**, where both the heart and lungs have ceased functioning. - The appropriate intervention is **cardiopulmonary resuscitation (CPR)**, which involves a combination of **chest compressions and rescue breaths (30:2 ratio)**, not just rescue breaths alone. *Pulse and breath present* - If both vital signs are present, the person is **conscious and breathing adequately**, or unconscious but breathing normally. - No advanced respiratory intervention like mouth-to-mouth resuscitation is needed; the priority would be maintaining their airway and monitoring their condition.

Q: What is the staging system used for the condition seen in the patient after a history of intubation, as shown in the image?

Cormack and Lehane. ***Cormack and Lehane*** - The **Cormack and Lehane classification** system is used to grade the view of the **larynx** during **direct laryngoscopy** for intubation. - Given the history of intubation and the image showing the laryngeal view, this system is the most appropriate for staging the visual difficulty or success of intubation. *AJCC* - The **American Joint Committee on Cancer (AJCC) staging system** is primarily used for **oncological staging**, classifying the extent of cancer. - It is not relevant for assessing the view of the larynx during intubation. *TNM* - **TNM staging** (Tumor, Node, Metastasis) is a widely used system for classifying the **progression of cancer**. - This system is specific to cancer staging and is not applicable to the assessment of airways for intubation. *Radkowski* - The **Radkowski staging system** is used to classify **pediatric subglottic stenosis**, a narrowing of the airway below the vocal cords. - While it deals with airway issues, the question focuses on the view during intubation, not the severity of subglottic stenosis, and the image does not specifically point to this condition.

Q: What is the purpose of Positive End-Expiratory Pressure (PEEP)?

To prevent atelectasis. ***To prevent atelectasis*** - PEEP maintains a positive pressure in the airways at the end of exhalation, which helps to keep **alveoli open** and prevents their collapse. - This recruitment of collapsed alveoli improves **oxygenation** and reduces the work of breathing. *To decrease preload* - While PEEP can indirectly decrease cardiac preload by increasing intrathoracic pressure, its primary purpose is not cardiovascular but rather respiratory. - The impact on preload is a potential side effect that requires careful monitoring, especially in patients with compromised cardiac function. *To increase venous return* - PEEP actually tends to **decrease venous return** due to increased intrathoracic pressure compressing the vena cava and reducing the pressure gradient for blood flow back to the heart. - This can lead to a reduction in cardiac output, which is a potential adverse effect. *To increase respiratory rate (RR)* - PEEP does not directly increase the respiratory rate; instead, it is a setting on a mechanical ventilator that affects lung volumes and oxygenation. - Respiratory rate is typically set independently or influenced by the patient's ventilatory drive.

Q: Identify the instrument shown in the image:

Uncuffed endotracheal (ET) tube. ***Uncuffed endotracheal (ET) tube*** - This image displays a transparent, flexible tube with a distinct connector at one end and no inflated cuff near the distal tip, which is characteristic of an **uncuffed endotracheal tube**. - Uncuffed ET tubes are commonly used in **pediatric patients** where a cuff could potentially damage the narrower, cone-shaped trachea. *Nasogastric tube* - A nasogastric tube typically has a much **smaller diameter** and a distinctly different tip design, often with multiple side ports for fluid aspiration or administration. - It does not feature the large, universal connector seen on endotracheal tubes. *Oropharyngeal tube* - An oropharyngeal (Guedel) airway is a **rigid, curved device** inserted into the mouth to maintain an open airway, and it looks distinctly different from the flexible tube shown. - It does not extend into the trachea like an ET tube. *Tracheostomy tube* - A tracheostomy tube is typically shorter, often with a curved neck flange for securement to the neck, and frequently made with an outer and inner cannula, which are absent in the image. - While it helps maintain an airway, its design is specific for insertion directly into a tracheostomy stoma, unlike the longer tube for oral/nasal intubation.

Q: The procedure shown in the image is performed to maintain the airway. Which of the following techniques is being used?

Jaw thrust. ***Jaw thrust*** - The image distinctly shows a rescuer performing a **jaw thrust maneuver** by placing fingers under the angles of the patient's mandible and displacing the jaw forward. - This technique is used to open the airway by lifting the tongue off the posterior pharyngeal wall, especially in cases of suspected **cervical spine injury**. *Head stabilization* - While important in trauma, **head stabilization alone** does not open the airway; it prevents movement without actively repositioning the jaw or head. - Head stabilization is a supportive technique, often used in conjunction with airway maneuvers, but it is not the primary airway-opening technique depicted. *In line manual stabilization* - **In-line manual stabilization** is a method where a rescuer holds the patient's head and neck in a neutral, in-line position to prevent movement, particularly during transport or other interventions. - This technique is used to protect the spine from further injury and prevents any movement from the head or neck. *Head tilt chin lift* - The **head tilt-chin lift** involves tilting the head back and lifting the chin, which is a different hand placement and body movement than what is shown. - This maneuver is contraindicated in suspected cervical spine injuries due to the risk of exacerbating spinal cord damage.

Q: In conventional oxygen therapy, which device will deliver the highest FiO2?

Non rebreathing mask. **Non rebreathing mask** - This device features a **one-way valve** between the mask and the reservoir bag, preventing exhaled air from mixing with fresh oxygen. This allows for the delivery of the **highest possible FiO2** among conventional oxygen therapy devices, often up to 90-100%. - The **reservoir bag** ensures a continuous supply of high-concentration oxygen during inspiration, maximizing the amount of oxygen inhaled. *Hudson mask* - Also known as a **simple face mask**, it delivers a moderate FiO2 (40-60%) at flow rates of 5-10 L/min. - The open ports on the sides allow for mixing of room air with oxygen, making it less efficient for delivering very high oxygen concentrations. *Venturi mask* - This device uses the Venturi principle to deliver a **precise and consistent FiO2** by entraining room air with oxygen. - While it provides controlled oxygen delivery, its maximum FiO2 typically ranges from 24-60%, which is lower than a non-rebreathing mask. *Nasal cannula* - The nasal cannula delivers a relatively low FiO2 (24-44%) at flow rates of 1-6 L/min. - It is designed for **low-flow oxygen delivery** and is not suitable for patients requiring high concentrations of oxygen.

Question 1

Mallampati test is used for the assessment of :

Accepted Answer

Airway

Answer

Tongue size

Answer

Ability to protrude jaw

Answer

Breath hold time

Question 2

Preoperative Samsoon and Young modified, Mallampati test is used for assessing:

Accepted Answer

Difficulty in intubation

Answer

Preoperative nutrition status of patient

Answer

Patient's overall fitness for surgery

Answer

Blood requirement during surgery

Question 3

Rapid Sequence Induction is indicated in:

Accepted Answer

Emergency surgery for intestinal obstruction

Answer

Cardiopulmonary bypass surgery

Answer

Elective open hernia surgery

Answer

Elective laparoscopic surgery

Question 4

What is the pressure required to open the shown in the image?

Accepted Answer

Pulse present, breath absent

Answer

Pulse absent, breath present

Answer

Pulse & breath present

Answer

Pulse and breath both not found

Question 5

In which clinical scenario would you find a patient requiring the vital signs assessment technique shown in the image?

Accepted Answer

Pulse present, breath absent

Answer

Pulse absent, breath present

Answer

Pulse and breath both not present

Answer

Pulse and breath present

Question 6

What is the staging system used for the condition seen in the patient after a history of intubation, as shown in the image?

Accepted Answer

Cormack and Lehane

Answer

AJCC

Answer

TNM

Answer

Radkowski

Question 7

What is the purpose of Positive End-Expiratory Pressure (PEEP)?

Accepted Answer

To prevent atelectasis

Answer

To decrease preload

Answer

To increase venous return

Answer

To increase respiratory rate (RR)

Question 8

Identify the instrument shown in the image:

Accepted Answer

Uncuffed endotracheal (ET) tube

Answer

Nasogastric tube

Answer

Oropharyngeal tube

Answer

Tracheostomy tube

Question 9

The procedure shown in the image is performed to maintain the airway. Which of the following techniques is being used?

Accepted Answer

Jaw thrust

Answer

Head stabilization

Answer

In line manual stabilization

Answer

Head tilt chin lift

Question 10

In conventional oxygen therapy, which device will deliver the highest FiO2?

Accepted Answer

Non rebreathing mask

Answer

Hudson mask

Answer

Venturi mask

Answer

Nasal cannula

Respiratory and Airway Management — MCQs

Respiratory and Airway Management — MCQs

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