The choice of isoprenaline and atropine needs to be based on the specific condition. 1. Atropine is mainly used in the following clinical aspects: colic caused by visceral smooth muscle spasm; inhibit intraoperative glandular secretion in surgical patients; optometry, funduscopic examination; treatment of bradyarrhythmia caused by vagal excitation; infectious shock; antagonism of organophosphorus pesticide poisoning. Atropine is contraindicated in patients with glaucoma, prostatic hypertrophy and those with high fever. Adverse reactions include constipation, decreased sweating, dryness of the mouth, nose and throat, and low gastrointestinal motility. 2. The main clinical applications of isoprenaline: allergic diseases; cardiac arrest; treatment of glaucoma; the common adverse reactions of the drug are dryness of the oropharynx, palpitations (accelerated heartbeat, often accompanied by panic) and so on. It is contraindicated in patients with hypertension and myocardial infarction. Patients are advised to follow the doctor’s instructions to choose the appropriate medication and follow the instructions or doctor’s orders for medication.