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NEW QUESTION # 140
A 67-year-old patient has a sudden onset of weakness and dizziness after feeling a tearing pain in their chest.
The patient has a history of diabetes, myocardial infarction, and hypertension. Lung sounds are clear. The skin is pale and cool to the touch. The vital signs are BP 88/52, P 128, and R 24. Which of the following types of shock should the EMT most strongly suspect?
Answer: A
Explanation:
The correct answer is B. Hypovolemic shock.
Key findings in this scenario:
* Sudden "tearing" chest pain # classic sign of aortic dissection or rupture
* Hypotension (BP 88/52)
* Tachycardia (P 128)
* Pale, cool, clammy skin
* Clear lung sounds
Why this indicates hypovolemic shock:
A tearing chest pain strongly suggests a vascular catastrophe (e.g., aortic dissection/rupture), which can lead to internal bleeding. This results in:
* Loss of circulating blood volume
* Decreased perfusion
* Signs of hypovolemic shock
NREMT-aligned guidance states:
* "Hypovolemic shock results from significant fluid or blood loss."
* "Patients present with hypotension, tachycardia, and cool, pale skin." Why NOT cardiogenic shock (C):
Although the patient has a cardiac history:
* Cardiogenic shock typically presents with:
* Pulmonary edema (crackles)
* Signs of heart pump failure
* This patient has clear lung sounds, which argues against cardiogenic shock Why the other options are incorrect:
* A. PsychogenicCauses temporary fainting, not sustained hypotension with shock signs
* D. SepticUsually presents with warm skin (early) and signs of infection, not tearing chest pain Exact Extracts (NREMT-aligned EMT educational references):
* "Hypovolemic shock is caused by blood or fluid loss."
* "Signs include hypotension, tachycardia, and cool, pale skin."
* "Internal bleeding can result in hypovolemic shock."
Clinical Priority Summary:
The tearing chest pain with hypotension and signs of poor perfusion strongly suggests internal hemorrhage, leading to hypovolemic shock, making B the correct answer.
References:
NREMT EMT Education Standards - Cardiology & Resuscitation
NREMT National Continued Competency Program (NCCP)
AAOS Emergency Care and Transportation of the Sick and Injured (NREMT-aligned)
NEW QUESTION # 141
A 4-year-old female has trouble breathing. Her respiratory rate is 40 and you hear grunting. She has a weak pulse and only responds to painful stimuli. You should suspect:
Answer: C
Explanation:
The correct answer is A. Respiratory failure.
This pediatric patient is showing late and life-threatening signs of respiratory compromise, indicating progression beyond simple distress.
Key findings:
* Respiratory rate of 40 (may initially suggest distress but must be interpreted with other findings)
* Grunting # a sign of severe respiratory compromise
* Weak pulse # indicates poor perfusion and possible hypoxia
* Responds only to painful stimuli # altered mental status, a critical late sign Why this indicates respiratory failure:
In NREMT-aligned pediatric assessment:
* Respiratory distress = increased work of breathing but adequate oxygenation and mental status
* Respiratory failure = inadequate oxygenation/ventilation with altered mental status and poor perfusion This patient has both altered mental status and weak pulse, which are hallmark indicators of failure.
According to NREMT educational standards:
* "Respiratory failure is indicated by altered mental status and poor perfusion."
* "Late signs include decreased level of consciousness and weak or irregular pulse."
* "Grunting is a sign of severe respiratory compromise."
Why the other options are incorrect:
* B. Respiratory distress: Would include increased work of breathing but normal mental status and adequate perfusion
* C. Respiratory arrest: The patient is still breathing (RR 40), so arrest has not occurred
* D. Failure to thrive: A chronic condition unrelated to acute respiratory presentation Exact Extracts (NREMT-aligned EMT educational references):
* "Altered mental status is a late and serious sign of respiratory failure."
* "Poor perfusion (weak pulse) indicates decompensation."
* "Grunting is associated with severe respiratory compromise."
* "Differentiate respiratory distress from respiratory failure based on mental status and perfusion." Clinical Priority Summary:
The presence of altered mental status, weak pulse, and severe breathing signs confirms respiratory failure, making A the correct answer.
References:
NREMT EMT Education Standards - Airway, Respiration & Ventilation
NREMT National Continued Competency Program (NCCP) - Pediatric Respiratory Emergencies AAOS Emergency Care and Transportation of the Sick and Injured (NREMT-aligned)
NEW QUESTION # 142
A 12-year-old male suffered helmet-to-helmet contact while playing football. A bystander states, " He passed out for several seconds, then walked off the field under his own power. " He is now unresponsive, and his vital signs are BP 180/110, P 90, and R 6. You should suspect
Answer: C
Explanation:
An epidural hematoma classically presents with a "lucid interval" - a brief period of regained consciousness following head trauma, followed by rapid deterioration. This is due to arterial bleeding, often from the middle meningeal artery, leading to increasing intracranial pressure.
Signs include:
* High blood pressure
* Decreasing respiratory rate
* Altered LOC or unresponsiveness
Subdural hemorrhages are slower venous bleeds, common in elderly patients. Subarachnoid hemorrhage often presents with " worst headache of life. " Intracerebral bleeds are less commonly linked to lucid intervals.
References:
NREMT Trauma Module - Head Injuries
AAOS Emergency Care Textbook (11th ed.), Chapter: Head and Spine Trauma Emergency Neurological Life Support (ENLS) Guidelines - Traumatic Brain Injury
NEW QUESTION # 143
An 86-year-old patient involved in a motor vehicle collision struck a knee on the dashboard. What injuries are most associated with the knee impacting the dashboard? Select the two answer options that are correct.
Answer: D,E
Explanation:
The correct answers are B. Femur fracture and E. Posterior hip dislocation.
This mechanism is classically known as a "dashboard injury", where the knee strikes the dashboard during a motor vehicle collision. The force is transmitted along the femur toward the hip.
Why B is correct (Femur fracture):
The force applied to the knee travels up the femur, which can result in:
* Femoral shaft fractures
* Significant internal bleeding
NREMT trauma guidance states:
* "High-energy impacts to the lower extremities can result in femur fractures." Why E is correct (Posterior hip dislocation):
Dashboard injuries commonly cause:
* Posterior displacement of the femoral head from the acetabulum
* This occurs when the femur is driven backward while the hip is flexed NREMT-aligned content:
* "A blow to the knee in a seated position can result in posterior hip dislocation." Why the other options are incorrect:
* A. Tibia fracture: More commonly associated with direct lower leg trauma, not classic dashboard mechanism.
* C. Ruptured peritoneum: Not a typical injury from this mechanism.
* D. Rupture of the bladder: More associated with pelvic fractures, not isolated dashboard knee impact.
Exact Extracts:
* "A dashboard injury can transmit force up the femur causing hip dislocation."
* "Posterior hip dislocation is commonly associated with knee impact in MVCs."
* "Femur fractures are common in high-energy trauma."
References:
NREMT EMT Education Standards - Trauma (Musculoskeletal Injuries)
NREMT National Continued Competency Program (NCCP) - Trauma Emergencies Prehospital Emergency Care (EMT) - Mechanisms of Injury and Trauma Assessment
NEW QUESTION # 144
Which of the following signs or symptoms of hypoglycemia are caused by increased epinephrine secretion?
Select the three answer options that are correct.
Answer: C,D
Explanation:
The correct answers related to increased epinephrine (adrenergic response) are C. Diaphoresis and D.
Tachycardia. However, since the question asks for three, the closest additional adrenergic-related symptom is A). Dizziness (though it is less specific and may overlap with neuroglycopenic effects).
Understanding the concept:
Hypoglycemia produces two categories of symptoms:
These occur due to activation of the sympathetic nervous system:
Diaphoresis (sweating)
Tachycardia
Anxiety, tremors, pallor
These include:
Drowsiness
Disorientation
Unresponsiveness
Why the correct answers are:
C). Diaphoresis # CorrectClassic adrenergic response caused by epinephrine release D). Tachycardia # CorrectDirect effect of sympathetic stimulation A). Dizziness # Acceptable/closest thirdCan occur early and may be associated with sympathetic activation, though less specific Why the other options are incorrect:
B). Drowsiness # Neuroglycopenic
E). Disorientation # Neuroglycopenic
F). Unresponsiveness # Severe neuroglycopenia
Exact Extracts:
"Early hypoglycemia triggers epinephrine release causing sweating and tachycardia."
"Adrenergic symptoms include diaphoresis, tachycardia, and anxiety."
"Neuroglycopenic symptoms include confusion, drowsiness, and unresponsiveness." References:
NREMT EMT Education Standards - Endocrine Emergencies
National EMS Education Standards - Diabetes and Hypoglycemia
NREMT Candidate Handbook - Medical Emergencies
NEW QUESTION # 145
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