Mass Disaster Management — MCQs
In an accident case, after the arrival of medical team, all should be done in early management except;
In immediate disaster response management (first 24-48 hours), which of the following is not typically practiced?
What is the investigation of choice for blunt abdominal trauma in an unstable patient?
In the TRIAGE system for disaster management, which of the following color codes denotes "high-priority treatment and/or transfer"?
Ambulatory patients after a disaster are categorized into what color of triage?
Which method is considered the most reliable for fingerprint identification?
A 24-year-old female patient presents with a few weeks of amenorrhea, a left adnexal mass on ultrasound, and a beta-hCG level of $2500 \mathrm{mIU} / \mathrm{mL}$. No fetal heart rate is detected on the ultrasound. What is the most appropriate management?
Which of the following is an indication for medical management in ectopic pregnancy?
Following a major fire in a hotel, 50 severely charred bodies need identification. Initial assessment shows: Group A (20 bodies) - moderate charring with some fingerprint possibility; Group B (15 bodies) - severe charring, teeth intact; Group C (15 bodies) - extreme charring with fragmentation. Evaluate the most appropriate sequential identification strategy considering efficiency, cost, and identification success rate.
A country is developing a disaster victim identification protocol for mass casualty events. Considering resource limitations, technological capabilities, and medico-legal requirements, which combination of primary and secondary identification methods would provide the most comprehensive and cost-effective DVI system?
Mass Disaster Management Indian Medical PG Practice Questions and MCQs
Question 1: In an accident case, after the arrival of medical team, all should be done in early management except;
- A. Glasgow coma scale
- B. Check BP (Correct Answer)
- C. Stabilization of cervical vertebrae
- D. Check Respiration
Explanation: ***Check BP*** - In the **immediate/early management** of trauma (primary survey), while circulation assessment is crucial, the **initial assessment of circulation** focuses on: - **Pulse rate and quality** (radial, carotid) - **Capillary refill time** - **Skin color and temperature** - **Active hemorrhage control** - **Formal blood pressure measurement** with a cuff, while important, is typically recorded during or after these rapid initial assessments, as it takes more time to obtain an accurate reading. - In the context of this question, among the four options listed, BP measurement is relatively less immediate compared to the other life-saving priorities (airway protection, breathing assessment, C-spine stabilization, and GCS). - **Note:** This is a nuanced distinction - BP is assessed during primary survey, but the other three options have more immediate life-threatening implications if not addressed. *Glasgow coma scale* - **GCS assessment** is part of the **"D" (Disability)** step in the ATLS primary survey. - It is performed early to assess neurological status and level of consciousness. - GCS <8 indicates need for **definitive airway protection** (intubation). - This is a critical early assessment that guides immediate management decisions. *Stabilization of cervical vertebrae* - **C-spine immobilization** is part of the **"A" (Airway)** step - "Airway with cervical spine protection." - It is performed **simultaneously** with airway assessment using a **rigid cervical collar**. - This is the **first priority** in trauma management to prevent secondary spinal cord injury. - All trauma patients should be assumed to have C-spine injury until proven otherwise. *Check Respiration* - **Respiratory assessment** is part of the **"B" (Breathing)** step in the ATLS primary survey. - This involves checking: - **Respiratory rate and pattern** - **Chest wall movement** - **Air entry bilaterally** - **Signs of tension pneumothorax or flail chest** - This is an immediate life-saving priority and must be assessed early.
Question 2: In immediate disaster response management (first 24-48 hours), which of the following is not typically practiced?
- A. Rehabilitation
- B. Triage
- C. Mass vaccination (Correct Answer)
- D. Search and rescue
Explanation: ***Mass vaccination*** - **Mass vaccination** is typically a strategy for **preparedness/prevention phase** or **post-disaster disease prevention**, not an immediate disaster response activity. - Immediate disaster response focuses on **saving lives, providing emergency medical care, establishing shelter, and restoring critical infrastructure**, rather than large-scale preventative health campaigns. - Mass vaccination requires **planning, logistics, cold chain management**, which are incompatible with chaotic immediate response scenarios. *Triage* - **Triage** is a **critical and immediate** component of disaster response, involving the **prioritization of injured patients** for treatment based on severity and survival likelihood. - It ensures limited resources are allocated effectively to **maximize lives saved** during the acute phase. - Typically uses **color-coded tags** (red-immediate, yellow-delayed, green-minor, black-deceased). *Rehabilitation* - While **rehabilitation** is part of the **recovery phase** (weeks to months post-disaster), **early rehabilitation activities** may begin during the immediate response period. - Basic rehabilitation services like **mobility aids, psychological first aid**, can be initiated alongside acute care. - This makes it partially practiced even in immediate response, unlike mass vaccination which is never immediate. *Search and rescue* - **Search and rescue** is the **primary immediate response activity**, focusing on locating and extracting survivors from disaster-affected areas. - Time-critical operation following the **"golden period"** principle where survival rates decrease rapidly after 72 hours. - Involves specialized teams with equipment for **debris removal, victim location, and emergency extraction**.
Question 3: What is the investigation of choice for blunt abdominal trauma in an unstable patient?
- A. X-ray abdomen
- B. MRI
- C. USG (Correct Answer)
- D. Diagnostic Peritoneal Lavage (DPL)
Explanation: ***USG (FAST Exam)*** - In an **unstable patient** with blunt abdominal trauma, **Focused Assessment with Sonography for Trauma (FAST) exam** is the investigation of choice. - It is **rapid, non-invasive, and bedside**, allowing immediate detection of **free fluid** (blood) in the peritoneal cavity, pericardium, and pleural spaces without transporting the patient. - Guides immediate decision for **laparotomy** in hemodynamically unstable patients. - **Note:** In **stable patients**, **CT abdomen** is the gold standard as it provides detailed anatomical information, but it requires patient transport and time. *X-ray abdomen* - Provides limited information in blunt trauma, primarily showing **free air** (bowel perforation) or **bony fractures**. - **Not sensitive** for detecting intraperitoneal bleeding, which is the primary concern in unstable patients. *MRI* - Offers excellent soft tissue detail but is **time-consuming** and requires the patient to be **hemodynamically stable**. - **Impractical** for unstable trauma patients requiring rapid assessment and intervention. *Diagnostic Peritoneal Lavage (DPL)* - An **invasive procedure** that is sensitive for detecting intra-abdominal hemorrhage. - Has largely been **replaced by FAST exam** in most trauma centers due to FAST being non-invasive, rapid, and repeatable. - DPL has a **higher false-positive rate** and cannot identify the source of bleeding.
Question 4: In the TRIAGE system for disaster management, which of the following color codes denotes "high-priority treatment and/or transfer"?
- A. Red (Correct Answer)
- B. Black
- C. Yellow
- D. Green
Explanation: ***Red*** - The **red tag** in the TRIAGE system signifies critical injuries requiring **immediate intervention** and transport to save life or limb. - Patients tagged red have a high priority for treatment with a good chance of survival if attended to promptly. - This represents the **highest priority** category for "high-priority treatment and/or transfer." *Green* - The **green tag** indicates patients with **minor injuries** who can walk and care for themselves. - Also known as the "**walking wounded**," these patients require minimal or delayed medical attention. - They have the **lowest priority** in disaster triage and can wait hours for treatment. *Black* - A **black tag** indicates the patient is **deceased** or has injuries so severe that survival is unlikely given the available resources. - These patients are assigned a low priority for treatment to allocate resources to those with a better prognosis. - Also called "**expectant**" in some systems. *Yellow* - The **yellow tag** designates patients with **serious, but non-life-threatening injuries** who can wait for treatment for a few hours. - These patients are stable enough that they do not require immediate intervention but will need medical attention. - Examples include fractures, moderate burns, or stable abdominal injuries.
Question 5: 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 6: Which method is considered the most reliable for fingerprint identification?
- A. Gustafson method
- B. Galton method (Correct Answer)
- C. Anthropometry
- D. Scars
Explanation: ***Galton method*** - The **Galton method**, or **Galton's details**, refers to the unique patterns of **ridges and minutiae** (e.g., bifurcations, endings, dots) in fingerprints. - This method focuses on the **individual characteristics** and arrangements of these features, which are considered **highly individualizing** and form the basis of modern fingerprint analysis. *Gustafson method* - The **Gustafson method** is used in **forensic odontology** (dental forensics) for **age estimation** based on the examination of teeth. - It involves analyzing six morphological criteria of tooth changes, such as **attrition, secondary dentin deposits, and cementum apposition**, which are unrelated to fingerprint identification. *Anthropometry* - **Anthropometry** is the scientific study of the **measurements and proportions of the human body**. - It was historically used for identification (e.g., **Bertillonage system**) but was found to be less reliable than fingerprints due to the variability and commonality of body measurements. *Scars* - While **scars** can be unique bodily marks, they are **not considered a primary method for definitive identification** in the same way fingerprints are. - Scars can change over time, are not always present or uniformly documented, and lack the detailed, unchangeable patterns found in friction ridge skin.
Question 7: A 24-year-old female patient presents with a few weeks of amenorrhea, a left adnexal mass on ultrasound, and a beta-hCG level of $2500 \mathrm{mIU} / \mathrm{mL}$. No fetal heart rate is detected on the ultrasound. What is the most appropriate management?
- A. Expectant management
- B. Salpingectomy
- C. Milking of tube
- D. Single dose methotrexate (Correct Answer)
Explanation: **Single dose methotrexate** - A **beta-hCG level of 2500 mIU/mL** in conjunction with an adnexal mass and no fetal heart rate visible on ultrasound is consistent with an **unruptured ectopic pregnancy** in a hemodynamically stable patient. - **Methotrexate** is a systemic treatment that inhibits trophoblastic cell growth, leading to the resolution of the ectopic pregnancy without surgery. *Expectant management* - This approach is typically reserved for patients with very **low and declining beta-hCG levels** who are completely asymptomatic and have no evidence of rupture. - With a beta-hCG of 2500 mIU/mL and a definite adnexal mass, the risk of rupture is significant, making expectant management inappropriate. *Salpingectomy* - **Salpingectomy** (surgical removal of the fallopian tube) is usually indicated for **ruptured ectopic pregnancies**, hemodynamically unstable patients, or when medical management fails. - While it's an effective treatment, the patient's current presentation (unruptured, stable beta-hCG) allows for a less invasive medical approach first. *Milking of tube* - **"Milking" or "expressing" the tube** is an outdated and potentially harmful maneuver that involves squeezing the fallopian tube to push the ectopic pregnancy out. - This method is associated with **high rates of recurrence** and potential for tubal damage, and is not a recommended treatment for ectopic pregnancy.
Question 8: Which of the following is an indication for medical management in ectopic pregnancy?
- A. Ectopic mass size < 4 cm (Correct Answer)
- B. Presence of fetal heart activity in the ectopic mass
- C. Gestation age < 6 weeks
- D. hCG level > 5000 mIU/mL
Explanation: ***Ectopic mass size < 4 cm*** - A small ectopic mass size, generally less than 3.5 to 4 cm, is a **key criterion for medical management with methotrexate**, as larger masses are associated with higher risk of rupture and treatment failure. - This dimension indicates a lower risk of imminent rupture, making medical intervention a safer and effective option. *Presence of fetal heart activity in the ectopic mass* - The presence of **fetal cardiac activity** is a **contraindication** for medical management and typically necessitates **surgical intervention** due to high failure rate of methotrexate and increased risk of rupture. - Fetal viability signifies an actively growing pregnancy, which is less likely to resolve successfully with medical treatment. *Gestation age < 6 weeks* - While a low gestational age might seem favorable, there is **no specific gestational age cutoff** as an independent indication for medical management of ectopic pregnancy. - The decision depends more on **hCG levels**, mass size, and absence of fetal cardiac activity rather than gestational weeks alone. *hCG level > 5000 mIU/mL* - An hCG level **greater than 5000 mIU/mL** is generally a **contraindication** for medical management, not an indication. - For methotrexate therapy to be considered, hCG levels should typically be **below 5000 mIU/mL** (some protocols use < 10,000 mIU/mL), as higher levels are associated with **lower success rates** and increased risk of treatment failure. - Very high hCG levels generally prompt consideration for surgical intervention, especially if other risk factors are present.
Question 9: Following a major fire in a hotel, 50 severely charred bodies need identification. Initial assessment shows: Group A (20 bodies) - moderate charring with some fingerprint possibility; Group B (15 bodies) - severe charring, teeth intact; Group C (15 bodies) - extreme charring with fragmentation. Evaluate the most appropriate sequential identification strategy considering efficiency, cost, and identification success rate.
- A. Complete post-mortem data collection on all bodies, then prioritize identification based on ante-mortem data availability
- B. Dental examination on all bodies first as teeth survive fire, then DNA on unidentified cases
- C. Simultaneous DNA analysis on all bodies for uniformity, followed by dental and fingerprint verification
- D. Fingerprints on Group A, dental on Group B, DNA on Group C; then DNA on unidentified from A and B (Correct Answer)
Explanation: ***Fingerprints on Group A, dental on Group B, DNA on Group C; then DNA on unidentified from A and B*** - This approach utilizes the **DVI (Disaster Victim Identification)** principle of using the least invasive and most cost-effective reliable methods first based on the state of remains. - **Fingerprinting** is the fastest for Group A, **Forensic Odontology** is highly resistant to heat for Group B, and **DNA analysis** is reserved for the fragmented remains in Group C or as a secondary backup. *Complete post-mortem data collection on all bodies, then prioritize identification based on ante-mortem data availability* - While thorough, this method is **time-inefficient** in a mass disaster scenario where rapid identification is required to manage logistics and family grieving. - It fails to triage the bodies based on their **physical condition**, leading to a bottleneck in processing fragmented remains alongside more intact ones. *Dental examination on all bodies first as teeth survive fire, then DNA on unidentified cases* - Although **dental pulp** and enamel are heat-resistant, performing dental exams on Group A is less efficient than **dactyloscopy** if fingerprints are still viable. - This strategy ignores the utility of **fingerprints**, which provide a faster match if ante-mortem records (like national IDs) are readily available. *Simultaneous DNA analysis on all bodies for uniformity, followed by dental and fingerprint verification* - This is the least **cost-effective** strategy, as **DNA extraction** and sequencing are expensive and labor-intensive compared to primary identifiers. - DNA should typically be used as a **confirmatory** tool or when primary methods (fingerprints/teeth) are not feasible due to extreme **charring or fragmentation**.
Question 10: A country is developing a disaster victim identification protocol for mass casualty events. Considering resource limitations, technological capabilities, and medico-legal requirements, which combination of primary and secondary identification methods would provide the most comprehensive and cost-effective DVI system?
- A. Primary: DNA profiling only; Secondary: Photography and anthropometry
- B. Primary: DNA and radiological comparison; Secondary: Dental, fingerprints, and facial recognition
- C. Primary: Dental and fingerprints; Secondary: DNA, radiological comparison, and anthropometry
- D. Primary: Fingerprints, dental, and DNA; Secondary: Medical records, tattoos, and personal effects (Correct Answer)
Explanation: ***Primary: Fingerprints, dental, and DNA; Secondary: Medical records, tattoos, and personal effects*** - According to **INTERPOL guidelines**, the three scientifically recognized **primary methods** for positive identification are **fingerprints**, **dental (odontology)** comparison, and **DNA profiling**. - **Secondary methods** such as **medical findings**, **tattoos**, and **personal effects** (jewelry, clothing) serve as supporting evidence but are generally insufficient for standalone legal identification. *Primary: DNA profiling only; Secondary: Photography and anthropometry* - Relying solely on **DNA** as a primary method is not cost-effective and ignores faster, cheaper primary methods like **dactyloscopy** (fingerprints). - **Photography** and **anthropometry** are considered unreliable for positive identification in mass disasters due to post-mortem changes and lack of unique specificity. *Primary: DNA and radiological comparison; Secondary: Dental, fingerprints, and facial recognition* - **Dental records** and **fingerprints** are primary identifiers and should not be relegated to secondary status. - **Radiological comparison** is typically classified as a **secondary method** (or supporting primary evidence) because it requires specific, high-quality ante-mortem records that may not be available. *Primary: Dental and fingerprints; Secondary: DNA, radiological comparison, and anthropometry* - While dental and fingerprints are primary, **DNA** must also be categorized as a **primary method** because it provides the highest level of scientific certainty when others fail. - Classification of **DNA** as secondary is medically and legally incorrect under **Disaster Victim Identification (DVI)** international protocols.
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