Red flags in dyspnea

Red flags in dyspnea

Red flags in dyspnea

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Red flags in dyspnea - Gasping for Alarms

  • Recognition of red flags in a patient with dyspnea is critical to identify life-threatening conditions requiring immediate intervention. These signs and symptoms suggest serious underlying pulmonary, cardiac, or systemic pathology.

  • Critical Red Flags (History & Symptoms):

    • Acute, Sudden Onset: Suggests catastrophic events like PE, pneumothorax, or MI.
    • Chest Pain: Especially if crushing (MI), pleuritic (PE, pneumothorax), or tearing (aortic dissection).
    • Altered Mental Status (Confusion, Lethargy): Indicates severe hypoxemia or hypercapnia.
    • Hemoptysis: Raises concern for PE, malignancy, or diffuse alveolar hemorrhage.
    • Syncope or Presyncope: Can occur with massive PE or cardiogenic shock.
    • Inability to Speak in Full Sentences: A simple but reliable sign of severe respiratory distress.
  • Critical Red Flags (Physical Examination & Vitals):

    • Hypoxemia: SpO₂ < 90% on room air.
    • Hypotension & Tachycardia: Signs of shock (cardiogenic, obstructive, septic).
    • Stridor: Inspiratory noise indicating upper airway obstruction (e.g., anaphylaxis, foreign body).
    • Accessory Muscle Use / Tripod Position: Indicates significant work of breathing and impending respiratory failure.
    • Asymmetric Breath Sounds or Unilateral Chest Wall Movement: Suggests pneumothorax, large pleural effusion, or mainstem bronchus obstruction.
    • Tracheal Deviation: Classic sign of a tension pneumothorax.
    • New Cardiac Murmur: May indicate acute valvular dysfunction.
    • Cyanosis: A late and ominous sign of severe hypoxemia.

⭐ In a patient with risk factors for VTE (e.g., recent surgery, malignancy, immobilization), the acute onset of dyspnea, pleuritic chest pain, and tachycardia should be considered a pulmonary embolism until proven otherwise.

Initial Triage & Management Flow

High‑Yield Points - ⚡ Biggest Takeaways

  • Acute, severe onset of dyspnea is a critical warning sign for pulmonary embolism, pneumothorax, or MI.
  • Any associated chest pain, especially if pleuritic or crushing, requires immediate evaluation.
  • Hemoptysis is highly concerning for PE, malignancy, or severe infection like tuberculosis.
  • Altered mental status, confusion, or cyanosis signals life-threatening hypoxia or hypercapnia.
  • Asymmetric leg swelling and pain strongly suggest a DVT as a likely source of PE.
  • Tracheal deviation, hypotension, and unilateral absent breath sounds indicate tension pneumothorax.

Practice Questions: Red flags in dyspnea

Test your understanding with these related questions

A 36-year-old man presents to the physician with difficulty in breathing for 3 hours. There is no history of chest pain, cough or palpitation. He is a chronic smoker and underwent elective cholecystectomy one month back. There is no history of chronic or recurrent cough, wheezing or breathlessness. His temperature is 38.2°C (100.8°F), pulse is 108/min, blood pressure is 124/80 mm Hg, and respirations are 25/min. His arterial oxygen saturation is 98% in room air as shown by pulse oximetry. After a detailed physical examination, the physician orders a plasma D-dimer level, which was elevated. A contrast-enhanced computed tomography (CT) of the chest shows a filling defect in a segmental pulmonary artery on the left side. Which of the following signs is most likely to have been observed by the physician during the physical examination of this patient’s chest?

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Flashcards: Red flags in dyspnea

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Which intracranial hemorrhage presents as the "worst headache of my life"? _____

TAP TO REVEAL ANSWER

Which intracranial hemorrhage presents as the "worst headache of my life"? _____

Subarachnoid hemorrhage

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