Obstruction of the superior vena cava results from mediastinal mass lesions. Features include a plethoric and cyanosed face with periorbital oedema, exophthalmos, conjunctival injection, and venous dilatation in the fundi, distended non-pulsatile neck veins and a positive Pemberton sign.
Bradycardia differential diagnosis. Bradycardia refers to heart rate <60/min in an adult; Bradycardias are classified as regular or irregular, narrow complex or wide complex; The underlying causes of bradycardia are legion
In emergency medicine and critical care, the cardiac failure that primarily concerns us is acute heart failure syndrome (AHFS), which refers to rapid worsening of heart failure signs and symptoms, and has many possible causes.
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