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Zorluk: OrtaCardiothoracic and Vascular Surgery

Paramedics rush a 68-year-old retired teacher into the resuscitation bay after he collapsed at home. His wife reports that he suddenly grabbed his chest and screamed about an agonizing pain tearing through his back before losing consciousness. His medical records indicate a history of chronic tobacco use, severe hypertension, and a previously documented descending thoracic aortic aneurysm measuring 6.1 cm in diameter. Current vital signs exhibit profound hemodynamic collapse: blood pressure is 68/38 mm Hg and heart rate is 128/min with a weak, thready pulse. Point-of-care ultrasound of the chest reveals a massive collection of fluid in the left pleural space. The patient remains unresponsive. Which of the following is the most appropriate next step in management?

  1. Emergent surgical or endovascular aortic repairCevap
  2. B
    Computed tomography angiography of the aorta
  3. C
    Insertion of a large-bore left thoracostomy tube
  4. D
    Administration of intravenous labetalol
  5. E
    Diagnostic and therapeutic pericardiocentesis

Cevap

Emergent surgical or endovascular aortic repair is the correct next step for a hemodynamically unstable patient with a ruptured thoracic aortic aneurysm.
The correct answer is emergent surgical or endovascular aortic repair. This patient presents with classic signs of a ruptured descending thoracic aortic aneurysm: sudden severe tearing back pain, profound hemorrhagic shock, and a massive left-sided hemothorax on ultrasound. The descending thoracic aorta lies in the posterior mediastinum adjacent to the left pleural space; therefore, ruptures commonly bleed directly into the left hemithorax. In a hemodynamically unstable patient with a known large aneurysm and clear evidence of rupture, the only appropriate step is immediate transfer to the operating room for source control.

Adım Adım Çözüm

1
Analyze the patient's presentation and medical history.
The patient has sudden-onset tearing back pain, a known 6.1 cm descending thoracic aortic aneurysm, and profound hypotension.
This constellation of findings strongly points to an acute catastrophic vascular event, specifically a ruptured aneurysm.
2
Interpret the imaging findings in the context of the clinical status.
Point-of-care ultrasound reveals a massive left pleural fluid collection, which represents a massive hemothorax from the ruptured aorta.
Descending thoracic aortic aneurysms typically rupture into the left hemithorax due to their anatomic location.
3
Determine the most appropriate management for a hemodynamically unstable patient with a ruptured aortic aneurysm.
Immediate transfer to the operating room for surgical or endovascular control of the bleeding is required.
Any delay for further imaging or inappropriate interventions will likely result in fatal exsanguination.

Anahtar Kavram

Hemodynamically unstable patients with a suspected ruptured descending thoracic aortic aneurysm (presenting with shock and left hemothorax) require immediate surgical or endovascular repair without delaying for advanced imaging.
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Cardiothoracic and Vascular Surgery

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