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This presentation aligns with cardiac tamponade (Beck’s triad). Field pericardiocentesis is rarely performed outside specific advanced teams due to technical risks. Prehospital care emphasizes rapid recognition, oxygenation, cautious fluid boluses to maintain preload (temporizing), and urgent transport to surgical capability (ED thoracotomy/pericardiotomy). Needle thoracostomy treats tension pneumothorax, not tamponade. Nitroglycerin reduces preload and would worsen hypotension. Paramedic trauma objectives stress quick identification of obstructive shock etiologies and early communication to expedite definitive care.

Warfarin predisposes to intracranial hemorrhage. Symptoms: thunderclap headache, vomiting, unequal pupils, altered mentation. Ischemic stroke is more gradual and focal. Hypoglycemia mimics neuro deficits but is reversible with glucose. Seizures may occur but are not primary cause. Prehospital priorities: airway, oxygenation, BP monitoring, glucose check, rapid transport to stroke-capable center, avoid aggressive BP lowering.

The most common initial rhythm in witnessed cardiac arrest is ventricular fibrillation. Asystole/PEA are more common in unwitnessed arrests. VF requires immediate defibrillation. Atrial fibrillation rarely causes sudden arrest. EMS focus: rapid recognition, early defibrillation, high-quality CPR.

If HR <60–80 after effective PPV, start compressions 3:1 ratio with ventilations. After 60 seconds, if HR <60, give epinephrine. Resuscitation steps are sequential; stopping is not appropriate early. EMS must know neonatal resuscitation sequence.

Emphysema, a COPD type, shows alveolar destruction, hyperinflation, loss of elasticity, and classic pursed-lip breathing to maintain airway pressure. Barrel chest develops from chronic hyperinflation. Croup = stridor, PE = pleuritic pain, asthma = episodic wheezing. Paramedics must recognize emphysema to titrate O₂ 88–92% and prepare for ventilatory support.