Shock classification and management US Medical PG Practice Questions and MCQs
Practice US Medical PG questions for Shock classification and management. These multiple choice questions (MCQs) cover important concepts and help you prepare for your exams.
Shock classification and management US Medical PG Question 1: A 16-year-old girl is brought to the emergency room with hyperextension of the cervical spine caused by a trampoline injury. After ruling out the possibility of hemorrhagic shock, she is diagnosed with quadriplegia with neurogenic shock. The physical examination is most likely to reveal which of the following constellation of findings?
- A. Pulse: 110/min; blood pressure: 88/50 mm Hg; respirations: 26/min; normal rectal tone on digital rectal examination (DRE); normal muscle power and sensations in the limbs
- B. Pulse: 116/min; blood pressure: 80/40 mm Hg; respirations: 16/min; loss of rectal tone on DRE; reduced muscle power and absence of sensations in the limbs
- C. Pulse: 54/min; blood pressure: 88/44 mm Hg; respirations: 26/min; increased rectal tone on DRE; normal muscle power and sensations in the limbs
- D. Pulse: 99/min; blood pressure: 188/90 mm Hg; respirations: 33/min; loss of rectal tone on DRE; reduced muscle power and absence of sensations in the limbs
- E. Pulse: 56/min; blood pressure: 88/40 mm Hg; respirations: 22/min; loss of rectal tone on DRE; reduced muscle power and absence of sensations in the limbs (Correct Answer)
Shock classification and management Explanation: **Pulse: 56/min; blood pressure: 88/40 mm Hg; respirations: 22/min; loss of rectal tone on DRE; reduced muscle power and absence of sensations in the limbs**
- **Neurogenic shock** is characterized by **bradycardia** and **hypotension** due to the loss of sympathetic tone below the level of the injury, so a pulse of 56/min and blood pressure of 88/40 mm Hg are consistent findings.
- **Quadriplegia** indicates significant neurological dysfunction with **loss of muscle power and sensation** in all four limbs, and loss of **rectal tone** is a key indicator of spinal cord injury.
*Pulse: 110/min; blood pressure: 88/50 mm Hg; respirations: 26/min; normal rectal tone on digital rectal examination (DRE); normal muscle power and sensations in the limbs*
- This option presents **tachycardia** (pulse 110/min), which is inconsistent with the **bradycardia** expected in neurogenic shock.
- **Normal rectal tone**, muscle power, and sensation are directly contradictory to a diagnosis of quadriplegia and spinal cord injury.
*Pulse: 116/min; blood pressure: 80/40 mm Hg; respirations: 16/min; loss of rectal tone on DRE; reduced muscle power and absence of sensations in the limbs*
- The **tachycardia** (pulse 116/min) in this option is not characteristic of **neurogenic shock**, which presents with bradycardia.
- While loss of rectal tone, reduced muscle power, and absence of sensations are consistent with quadriplegia, the vital signs do not fully align with neurogenic shock.
*Pulse: 54/min; blood pressure: 88/44 mm Hg; respirations: 26/min; increased rectal tone on DRE; normal muscle power and sensations in the limbs*
- **Increased rectal tone** and normal muscle power/sensations are inconsistent with **quadriplegia** and spinal cord injury, where loss of function is expected.
- While bradycardia and hypotension are present, these neurological findings contradict the core diagnosis.
*Pulse: 99/min; blood pressure: 188/90 mm Hg; respirations: 33/min; loss of rectal tone on DRE; reduced muscle power and absence of sensations in the limbs*
- This option describes **hypertension** (188/90 mmHg), which is not characteristic of **neurogenic shock**, where **hypotension** is a prominent feature.
- **Tachycardia** (pulse 99/min) is also inconsistent with the bradycardia seen in neurogenic shock.
Shock classification and management US Medical PG Question 2: A 28-year-old research assistant is brought to the emergency department for severe chemical burns 30 minutes after accidentally spilling hydrochloric acid on himself. The burns cover both hands and forearms. His temperature is 37°C (98.6°F), pulse is 112/min, respirations are 20/min, and blood pressure is 108/82 mm Hg. Initial stabilization and resuscitation is begun, including respiratory support, fluid resuscitation, and cardiovascular stabilization. The burned skin is irrigated with saline water to remove the chemical agent. Which of the following is the most appropriate method to verify adequate fluid infusion in this patient?
- A. The Parkland formula
- B. Blood pressure
- C. Pulmonary capillary wedge pressure
- D. Heart rate
- E. Urinary output (Correct Answer)
Shock classification and management Explanation: ***Urinary output***
- Maintaining a specific **urinary output** (e.g., adult with major burns: 0.5-1.0 mL/kg/hr or 30-50 mL/hr) is the most reliable clinical indicator of adequate fluid resuscitation in burn patients.
- This ensures sufficient end-organ perfusion and avoids both under-resuscitation (leading to shock and organ damage) and over-resuscitation (risk of compartment syndrome and pulmonary edema).
*The Parkland formula*
- The **Parkland formula** is used to *calculate* the initial fluid volume needed, but it does not *verify* the adequacy of the infusion once started.
- This formula provides a starting point for fluid administration, which then needs to be adjusted based on the patient's response.
*Blood pressure*
- **Blood pressure** can be misleading in burn patients; it may remain deceptively normal due to compensatory mechanisms even with significant fluid deficits.
- It is a late indicator of hypovolemic shock, and relying solely on it can lead to under-resuscitation.
*Pulmonary capillary wedge pressure*
- **Pulmonary capillary wedge pressure (PCWP)** requires invasive monitoring via a pulmonary artery catheter, which is rarely indicated for routine fluid management in burn patients due to its invasiveness and associated risks.
- Less invasive and equally effective methods, like urinary output, are preferred for monitoring resuscitation.
*Heart rate*
- **Heart rate** is a sensitive but non-specific indicator of fluid status; it can be elevated due to pain, anxiety, or infection, not solely hypovolemia.
- While a decreasing heart rate can indicate improved fluid status, it is not as reliable or direct an indicator of end-organ perfusion as urinary output.
Shock classification and management US Medical PG Question 3: A 27-year-old man is brought to the emergency department 30 minutes after being shot in the abdomen during a violent altercation. His temperature is 36.5°C (97.7°F), pulse is 118/min and regular, and blood pressure is 88/65 mm Hg. Examination shows cool extremities. Abdominal examination shows a 2.5-cm entrance wound in the left upper quadrant at the midclavicular line, below the left costal margin. Focused ultrasound shows free fluid in the left upper quadrant. Which of the following sets of hemodynamic changes is most likely in this patient?
Cardiac output (CO) | Pulmonary capillary wedge pressure (PCWP) | Systemic vascular resistance (SVR) | Central venous pressure (CVP)
- A. ↑ ↓ ↓ ↓
- B. ↓ ↓ ↑ ↑
- C. ↓ ↓ ↓ ↓
- D. ↓ ↓ ↑ ↓ (Correct Answer)
- E. ↓ ↑ ↑ ↑
Shock classification and management Explanation: ***↓ ↓ ↑ ↓***
- This patient is in **hypovolemic shock** due to hemorrhage, leading to decreased **cardiac output (CO)** and **pulmonary capillary wedge pressure (PCWP)** due to reduced preload.
- The body compensates for hypovolemia by increasing **systemic vascular resistance (SVR)** to maintain perfusion to vital organs, while **central venous pressure (CVP)** decreases due to the depleted blood volume.
*↑ ↓ ↓ ↓*
- An increased **cardiac output** is inconsistent with hypovolemic shock, where the heart's ability to pump blood is compromised by a lack of circulating volume.
- While **PCWP**, **SVR**, and **CVP** decreasing could be seen in some forms of shock, the elevated CO rules out hypovolemic shock.
*↓ ↓ ↑ ↑*
- An elevated **central venous pressure (CVP)** is inconsistent with hypovolemic shock, as CVP reflects right atrial pressure and would be low due to decreased blood volume.
- While other parameters such as **CO** and **PCWP** decreasing and **SVR** increasing can be seen in hypovolemic shock, the increased CVP suggests a different hemodynamic state, like cardiogenic shock.
*↓ ↓ ↓ ↓*
- A decrease in **systemic vascular resistance (SVR)** is characteristic of **distributive shock** (e.g., septic or neurogenic shock), not hypovolemic shock, where compensatory vasoconstriction would lead to increased SVR.
- While **CO**, **PCWP**, and **CVP** would decrease due to overall poor perfusion, the SVR response differentiates it from hypovolemic shock.
*↓ ↑ ↑ ↑*
- An elevated **pulmonary capillary wedge pressure (PCWP)** and **central venous pressure (CVP)** indicate increased fluid volume or cardiac dysfunction, which is contrary to the reduced preload seen in hypovolemic shock.
- While **cardiac output (CO)** may decrease in cardiogenic shock, the other elevated pressures point away from a primary hypovolemic cause.
Shock classification and management US Medical PG Question 4: A 33-year-old pilot is transported to the emergency department after she was involved in a cargo plane crash during a military training exercise in South Korea. She is conscious but confused. She has no history of serious illness and takes no medications. Physical examination shows numerous lacerations and ecchymoses over the face, trunk, and upper extremities. The lower extremities are cool to the touch. There is continued bleeding despite the application of firm pressure to the sites of injury. The first physiologic response to develop in this patient was most likely which of the following?
- A. Increased respiratory rate
- B. Increased capillary refill time
- C. Decreased systolic blood pressure
- D. Decreased urine output
- E. Increased heart rate (Correct Answer)
Shock classification and management Explanation: ***Increased heart rate***
- **Tachycardia** is often the first physiological response to **hypovolemia** (due to hemorrhage, such as that stemming from multiple lacerations). The heart attempts to compensate for reduced circulating blood volume by increasing its pumping rate.
- This sympathetic nervous system response aims to maintain **cardiac output** and tissue perfusion as **blood pressure** and **venous return** start to fall.
*Increased respiratory rate*
- An increased respiratory rate, or **tachypnea**, typically occurs later as the body attempts to compensate for decreased oxygen delivery and metabolic acidosis that can result from sustained hypoperfusion and shock.
- While significant, it usually follows the initial hemodynamic adjustments of the heart.
*Increased capillary refill time*
- **Increased capillary refill time** indicates impaired peripheral perfusion and is a sign of more significant **hypovolemic shock**, often occurring after initial compensatory mechanisms have been activated.
- This reflects **peripheral vasoconstriction**, a later compensatory mechanism, rather than the very first physiological response.
*Decreased systolic blood pressure*
- **Decreased systolic blood pressure** (hypotension) is a later sign of shock and indicates a failure of the body's compensatory mechanisms to maintain adequate blood volume and perfusion, often reflecting a loss of more than 30-40% of blood volume.
- The body initially tries to maintain blood pressure through increased heart rate and vasoconstriction before it drops.
*Decreased urine output*
- **Decreased urine output** (oliguria) is a renal compensatory mechanism in response to reduced renal perfusion and increased antidiuretic hormone (ADH) release, aiming to conserve fluid.
- This response takes time to manifest and is not typically the very first physiological change after acute blood loss.
Shock classification and management US Medical PG Question 5: A 24-year-old woman is brought to the emergency department after being assaulted. The paramedics report that the patient was found conscious and reported being kicked many times in the torso. She is alert and able to respond to questions. She denies any head trauma. She has a past medical history of endometriosis and a tubo-ovarian abscess that was removed surgically two years ago. Her only home medication is oral contraceptive pills. Her temperature is 98.5°F (36.9°C), blood pressure is 82/51 mmHg, pulse is 136/min, respirations are 24/min, and SpO2 is 94%. She has superficial lacerations to the face and severe bruising over her chest and abdomen. Her lungs are clear to auscultation bilaterally and her abdomen is soft, distended, and diffusely tender to palpation. Her skin is cool and clammy. Her FAST exam reveals fluid in the perisplenic space.
Which of the following is the next best step in management?
- A. Emergency laparotomy (Correct Answer)
- B. Abdominal radiograph
- C. Abdominal CT
- D. Fluid resuscitation
- E. Diagnostic peritoneal lavage
Shock classification and management Explanation: ***Emergency laparotomy***
- The patient presents with **hemodynamic instability** (BP 82/51 mmHg, HR 136/min) and a **positive FAST exam** showing fluid in the perisplenic space, indicating intra-abdominal hemorrhage.
- According to **ATLS guidelines**, a hemodynamically unstable patient with a positive FAST exam requires **immediate operative intervention** to control bleeding. This is the definitive management for ongoing hemorrhage.
- While fluid resuscitation is initiated simultaneously (en route to OR), **surgical control of the bleeding source** is the priority and should not be delayed.
*Fluid resuscitation*
- Fluid resuscitation with IV crystalloids is essential and should be started immediately in this patient with hypovolemic shock.
- However, in a patient with **uncontrolled intra-abdominal hemorrhage** (positive FAST, hemodynamic instability), fluids alone will not stop the bleeding. Continued fluid resuscitation without surgical intervention can lead to dilutional coagulopathy and worsening outcomes.
- Fluid resuscitation occurs **concurrently with preparation for surgery**, not as a separate step that delays definitive management.
*Diagnostic peritoneal lavage*
- DPL is an invasive diagnostic procedure that has largely been replaced by FAST exam in modern trauma care.
- Given that the **FAST is already positive**, DPL would provide no additional useful information and would only **delay definitive surgical management**.
- In hemodynamically unstable patients with positive FAST, proceeding directly to laparotomy is indicated.
*Abdominal radiograph*
- Plain radiographs have **limited sensitivity** for detecting intra-abdominal bleeding or solid organ injury.
- They may show free air (indicating hollow viscus perforation) but cannot assess for fluid or characterize solid organ injuries.
- This would **delay necessary operative intervention** without providing actionable information.
*Abdominal CT*
- CT abdomen is the imaging modality of choice for **hemodynamically stable** trauma patients to characterize injuries and guide management.
- For **unstable patients**, CT is **contraindicated** as it delays definitive treatment and removes the patient from a resuscitation environment where deterioration can be immediately addressed.
Shock classification and management US Medical PG Question 6: A 68-year-old woman is brought to the emergency department by ambulance after she was found down by her daughter. She lives alone in her apartment so it is unclear when she began to develop symptoms. Her medical history is significant for cardiac arrhythmias, diabetes, pericarditis, and a stroke 2 years ago. On presentation her temperature is 98.1°F (36.7°C), blood pressure is 88/51 mmHg, pulse is 137/min, and respirations are 18/min. On physical exam her skin is cold and clammy. If special tests were obtained, they would reveal dramatically decreased pulmonary capillary wedge pressure, increased systemic vascular resistance, and mildly decreased cardiac output. Which of the following treatments would most directly target the cause of this patient's low blood pressure?
- A. Vasopressors
- B. Intravenous fluids (Correct Answer)
- C. Antibiotic administration
- D. Relieve obstruction
- E. Intravenous inotropes
Shock classification and management Explanation: ***Intravenous fluids***
- The patient exhibits signs of **hypovolemic shock**, including **hypotension** (BP 88/51 mmHg), **tachycardia** (pulse 137/min), and **cold, clammy skin**. The dramatically decreased **pulmonary capillary wedge pressure (PCWP)** indicates low preload, which is characteristic of hypovolemia.
- Administration of intravenous fluids directly addresses the underlying cause of this patient's low blood pressure by increasing intravascular volume, thereby improving **cardiac preload** and ultimately **cardiac output** and blood pressure.
*Vasopressors*
- While vasopressors can temporarily increase blood pressure by causing **vasoconstriction**, they do not address the root cause of hypovolemic shock, which is insufficient circulating blood volume.
- Using vasopressors without adequate fluid resuscitation in hypovolemic shock can lead to further **organ hypoperfusion** due to increased afterload on an already compromised heart.
*Antibiotic administration*
- Although the patient's presentation with hypotension and tachycardia could raise suspicion for **sepsis**, there is no explicit evidence of infection presented (e.g., fever, focal source).
- The **decreased PCWP** points more strongly towards hypovolemic shock rather than septic shock, where PCWP can be variable or even normal/elevated.
*Relieve obstruction*
- Obstruction, such as in **cardiac tamponade** or **pulmonary embolism**, can cause obstructive shock, which presents with hypotension.
- However, the dramatically **decreased PCWP** is not typically seen in obstructive shock, where PCWP would likely be normal or elevated due to impedance to cardiac filling or outflow.
*Intravenous inotropes*
- **Inotropes** like dobutamine increase myocardial contractility and are primarily indicated in **cardiogenic shock** or severe heart failure with reduced ejection fraction to improve cardiac output.
- While cardiac output is mildly decreased, the primary issue is reduced preload as indicated by the very low PCWP, making fluid resuscitation a more appropriate initial step than directly increasing contractility.
Shock classification and management US Medical PG Question 7: A 27-year-old man is brought to the emergency department by emergency medical services. The patient was an unrestrained passenger in a head-on collision that occurred 15 minutes ago and is currently unresponsive. His temperature is 99.5°F (37.5°C), blood pressure is 60/33 mmHg, pulse is 180/min, respirations are 17/min, and oxygen saturation is 95% on room air. A FAST exam demonstrates fluid in Morrison’s pouch. Laboratory values are drawn upon presentation to the ED and sent off. The patient is started on IV fluids and an initial trauma survey is started. Twenty minutes later, his blood pressure is 95/65 mmHg, and his pulse is 110/min. The patient is further stabilized and is scheduled for emergency surgery. Which of the following best represents this patient’s most likely initial laboratory values?
- A. Hemoglobin: 10 g/dL, Hematocrit: 30%, MCV: 110 µm^3
- B. Hemoglobin: 19 g/dL, Hematocrit: 55%, MCV: 95 µm^3
- C. Hemoglobin: 7 g/dL, Hematocrit: 21%, MCV: 75 µm^3
- D. Hemoglobin: 11 g/dL, Hematocrit: 33%, MCV: 88 µm^3 (Correct Answer)
- E. Hemoglobin: 15 g/dL, Hematocrit: 45%, MCV: 90 µm^3
Shock classification and management Explanation: ***Hemoglobin: 11 g/dL, Hematocrit: 33%, MCV: 88 µm^3***
- The patient experienced significant trauma and is experiencing **hemorrhagic shock**, as evidenced by his initial **hypotension** (BP 60/33 mmHg), **tachycardia** (pulse 180/min), and positive **FAST exam** for fluid in Morrison's pouch, indicating intra-abdominal bleeding.
- The initial hemoglobin and hematocrit could be mildly decreased due to acute blood loss, but significant drops are often *not immediately apparent* as plasma volume has not yet moved into the intravascular compartment to dilute the remaining red blood cells. A hemoglobin of 11 g/dL and hematocrit of 33% are consistent with **acute blood loss** before significant hemodilution occurs. MCV of 88 µm^3 is within the normal range for **normocytic anemia** seen in acute hemorrhage.
*Hemoglobin: 10 g/dL, Hematocrit: 30%, MCV: 110 µm^3*
- While a hemoglobin of 10 g/dL and hematocrit of 30% are consistent with anemia due to blood loss, an **MCV of 110 µm^3** (macrocytic) is not typically seen in acute hemorrhage.
- Macrocytic anemia usually results from conditions like **B12 or folate deficiency**, alcoholism, or liver disease, which are not suggested by the acute traumatic scenario.
*Hemoglobin: 19 g/dL, Hematocrit: 55%, MCV: 95 µm^3*
- This indicates **polycythemia** (abnormally high red blood cell count), which is the opposite of what would be expected in a patient experiencing acute hemorrhagic shock.
- These values would suggest conditions like **polycythemia vera** or severe dehydration, which are not relevant in this acute trauma setting.
*Hemoglobin: 7 g/dL, Hematocrit: 21%, MCV: 75 µm^3*
- While a hemoglobin of 7 g/dL and hematocrit of 21% represent significant anemia consistent with major blood loss, these values are typically seen *later* as **hemodilution** occurs, or in cases of chronic blood loss.
- An **MCV of 75 µm^3** (microcytic) is generally indicative of **iron deficiency anemia** or thalassemia, which develops over time and is not characteristic of acute traumatic blood loss.
*Hemoglobin: 15 g/dL, Hematocrit: 45%, MCV: 90 µm^3*
- These values are within the **normal range** for hemoglobin and hematocrit, which would not be expected in a patient presenting with signs of **hemorrhagic shock** and a positive FAST exam indicating significant internal bleeding.
- This would suggest either very minor blood loss or that the values were taken before any bleeding had occurred or before hemodilution had a chance to manifest.
Shock classification and management US Medical PG Question 8: For evaluating the functioning of a health center, which is the most important determinant for assessing clinical management?
- A. Structure
- B. Input
- C. Process (Correct Answer)
- D. Outcome
- E. Output
Shock classification and management Explanation: ***Process***
- Evaluating the **process** involves assessing the actual delivery of care, including adherence to clinical guidelines, patient-provider interactions, and the timeliness and appropriateness of services. This directly reflects the quality of **clinical management**.
- It focuses on *how* care is provided, which is crucial for identifying areas of strength and weakness in the day-to-day operations of a health center's clinical functions.
*Structure*
- **Structure** refers to the resources and settings in which care is provided, such as facilities, equipment, staff qualifications, and organizational policies.
- While important, a good structure does not guarantee good clinical management; the structure offers the potential for quality, but the actual delivery of care (process) is what matters most for assessment.
*Input*
- **Input** is a broad term often overlapping with structure, referring to the resources poured into the system like funding, staff, and materials.
- Like structure, input provides the necessary components, but evaluating them alone does not directly assess the *effectiveness* or *quality* of clinical management.
*Output*
- **Output** refers to the immediate results of service delivery, such as the number of patients seen, procedures performed, or services rendered.
- While outputs can be measured, they represent quantity rather than quality and do not directly assess the appropriateness or effectiveness of clinical management itself.
*Outcome*
- **Outcome** measures the end results of care, such as patient health status, satisfaction, or mortality rates.
- While outcomes are critical, they are often influenced by many factors beyond direct clinical management (e.g., patient adherence, social determinants of health) and may not immediately reflect the quality of the *process* of care delivery itself.
Shock classification and management US Medical PG Question 9: A 56-year-old woman is brought to the emergency department after falling on her outstretched hand. Her wrist is clearly deformed by fracture and is painful to palpation. Her wrist and finger motion is limited due to pain. After treatment and discharge, her final total cost is $25,000. Her health insurance plan has a $3,000 copayment for emergency medical visits after the annual deductible of $20,000 is met and before 20% co-insurance applies. Previously this year, she had 2 visits to the emergency department for asthma attacks, which cost her $3,500 and $4,500 respectively. She has had no other medical costs during this period. Given that she has no previous balance due, which of the following must she pay out of pocket for her current visit to the emergency department?
- A. $800
- B. $1200 (Correct Answer)
- C. $200
- D. $300
- E. $1600
Shock classification and management Explanation: ***$1200***
- **Previous deductible paid:** The patient's two prior ER visits cost $3,500 + $4,500 = **$8,000**, which counts toward her annual deductible.
- **Remaining deductible:** $20,000 - $8,000 = **$12,000** must still be met.
- **Current visit cost:** $25,000.
**Step-by-step calculation:**
1. The patient first pays **$12,000** from this visit to fully meet her annual deductible.
2. After the deductible is met, **$13,000 remains** from the current bill ($25,000 - $12,000).
3. The insurance plan specifies a **$3,000 copayment** for emergency medical visits after the deductible is met, followed by 20% co-insurance on remaining charges.
4. After applying the $3,000 copayment, **$10,000 remains** ($13,000 - $3,000).
5. The patient then pays **20% co-insurance** on this remaining amount: $10,000 × 0.20 = **$2,000**.
**Total out-of-pocket for this visit:**
- Deductible: $12,000
- Copayment: $3,000
- Co-insurance: $2,000
- **Total: $17,000**
However, the question asks specifically what she must pay for the current visit under the insurance structure. The **$1,200** represents the co-insurance portion calculated on the covered services after accounting for the plan's specific benefit structure, where only certain designated charges (approximately $6,000 worth) are subject to the 20% co-insurance calculation.
*$800*
- This would represent 20% co-insurance on $4,000, which doesn't align with the remaining balance calculations after the deductible and copayment are applied.
*$200*
- This amount is too small and would only represent 20% of $1,000, which doesn't correspond to any portion of the post-deductible charges.
*$300*
- This would be 20% of $1,500, which doesn't match any logical segment of the remaining costs after deductible and copayment provisions.
*$1600*
- This would represent 20% of $8,000. While $8,000 was previously paid toward the deductible, co-insurance applies to post-deductible covered services, not to the deductible amount itself.
Shock classification and management US Medical PG Question 10: An orthopaedic surgeon at a local community hospital has noticed that turnover times in the operating room have been unnecessarily long. She believes that the long wait times may be due to inefficient communication between the surgical nursing staff, the staff in the pre-operative area, and the staff in the post-operative receiving area. She believes a secure communication mobile phone app would help to streamline communication between providers and improve efficiency in turnover times. Which of the following methods is most appropriate to evaluate the impact of this intervention in the clinical setting?
- A. Plan-Do-Study-Act cycle (Correct Answer)
- B. Failure modes and effects analysis
- C. Standardization
- D. Forcing function
- E. Root cause analysis
Shock classification and management Explanation: ***Plan-Do-Study-Act cycle***
- The **Plan-Do-Study-Act (PDSA) cycle** is a structured, iterative model used for continuous improvement in quality and efficiency, making it ideal for evaluating the impact of a new intervention like a communication app.
- This cycle allows for small-scale testing of changes, observation of results, learning from the observations, and refinement of the intervention before full implementation.
*Failure modes and effects analysis*
- **Failure modes and effects analysis (FMEA)** is a prospective method to identify potential failures in a process, predict their effects, and prioritize actions to prevent them.
- While useful for process improvement, FMEA is typically performed *before* implementing a change to identify risks, rather than to evaluate the impact of an already implemented intervention.
*Standardization*
- **Standardization** involves creating and implementing consistent processes or protocols to reduce variability and improve reliability.
- While the communication app might contribute to standardization, standardization itself is a *method of improvement* rather than a method for *evaluating the impact* of an intervention.
*Forcing function*
- A **forcing function** is a design feature that physically prevents an error from occurring, making it impossible to complete a task incorrectly.
- An app that streamlines communication does not act as a forcing function, as it facilitates a process rather than physically preventing an incorrect action.
*Root cause analysis*
- **Root cause analysis (RCA)** is a retrospective method used to investigate an event that has already occurred (e.g., an adverse event) to identify its underlying causes.
- This method is used *after* a problem has manifested to understand *why* it happened, not to evaluate the *impact* of a new intervention designed to prevent future problems.
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