NREMT Paramedic Cognitive ExamMedicalHard
A 35-year-old female presents with sudden onset of severe, tearing chest pain radiating to her back, described as 'the worst pain of my life.' She has a history of uncontrolled hypertension. Her vital signs are BP 180/110 mmHg (right arm), 140/80 mmHg (left arm), HR 110 bpm, RR 20 bpm. Her ECG shows sinus tachycardia with no ischemic changes. What is the most likely diagnosis?
- AAcute myocardial infarction (AMI).
- BPulmonary embolism.
- CPericarditis.
- DAortic dissection.
Show answer & explanationAnswer & explanation
Correct answer: D. Aortic dissection.
The patient's presentation with sudden, severe, tearing chest pain radiating to the back, a history of uncontrolled hypertension, and a significant blood pressure differential between the two arms (a classic sign) is highly indicative of an acute aortic dissection. This is a life-threatening emergency requiring rapid diagnosis and intervention.
Why the other options are wrong
- A. While chest pain is present, the tearing quality, back radiation, and especially the BP differential make AMI less likely, especially with no ischemic ECG changes.
- B. Pulmonary embolism can cause sudden chest pain and dyspnea, but the pain is typically pleuritic, and the tearing quality and BP differential are not characteristic features.
- C. Pericarditis typically presents with sharp, pleuritic chest pain that improves when leaning forward, and usually does not involve such a severe, tearing quality or BP differential.
Aortic Dissection Recognition
Aortic dissection is a life-threatening condition where the inner layer of the aorta tears, allowing blood to surge between layers. Key signs include sudden, severe tearing chest pain radiating to the back and a differential blood pressure between limbs.
- Sudden, severe, tearing chest pain, often radiating to back.
- Blood pressure differential (>20 mmHg) between arms is highly suggestive.
- History of hypertension is a major risk factor.
- Requires immediate surgical intervention.
Memory trick: Aorta's Anguish: Asymmetric Pressure, Ripping Pain, Often Hypertensive.