Exhaled diphtheria mainly includes Lopressor and Coramycin, both of which are central respiratory stimulants and are mainly used in patients with acute respiratory arrest and respiratory failure. The cardiac triad usually includes epinephrine, lidocaine, and atropine, which are mainly used for acute cardiac diseases and are often used in acute cardiac arrest. Epinephrine mainly enhances the contractility of the heart muscle and increases the cardiac output, thus having the effect of accelerating the heart rate, and is the drug of choice for acute cardiac arrest. In addition, epinephrine can be used to treat patients with anaphylaxis. Lidocaine is mainly an antiarrhythmic drug used to stabilize the heart rhythm after cardiopulmonary resuscitation, especially for ventricular tachycardia and frequent premature ventricular contractions. Atropine is mainly used for patients with slow heart rate, which can increase the heart rate and also has a stimulating effect on respiration, and is also a drug used to rescue acute organophosphorus pesticide poisoning.