Five Patients (Vintage Paperback) by Michael Crichton

ER has become the most successful television series in the world since Charlie's Angels. Michael Crichton created the series from his own experiences as a medical doctor in the emergency rooms, operating rooms and wards of Massachusetts General Hospital. 

Five Patients is Michael Crichton's true account of the real life dramas so vividly portrayed in ER. A construction worker is seriously injured in a scaffold collapse: a middle-aged dispatcher is brought in suffering from a fever that has reduced him to a delirious wreck; a young man nearly severs his hand in an accident; an airline traveller suffers chest pains; a mother of three is diagnosed with a life-threatening disease.