Final answer:
If atropine is ineffective in treating symptomatic bradycardia, dopamine and isoproterenol may be administered as alternative drugs. These medications improve cardiac output and increase heart rate by acting on beta-1 receptors.
Step-by-step explanation:
When atropine is ineffective in the treatment of symptomatic bradycardia, two drugs that may be given as alternatives include dopamine and isoproterenol. Dopamine acts on the heart by increasing heart rate and improving cardiac output, while isoproterenol works as a nonspecific beta-adrenergic agonist, which can increase heart rate by stimulating the beta-1 receptors in the heart.
It is important to note that these medications are part of a larger list of options for managing bradycardia, and the specific choice of drug should be based on individual patient circumstances and under the guidance of medical professionals.
To diagnose bradycardia, a health care provider will usually perform a physical exam and listen to your heart with a stethoscope. He or she may ask you questions about your symptoms and medical history.
Your health care provider may recommend tests to check your heart rate and see if you have a heart problem that can cause bradycardia. Blood tests may be done to check for other conditions that can cause slow heartbeats, such as an infection, an underactive thyroid (hypothyroidism) or an electrolyte imbalance.