Class II agents fall within the beta-blocker group described above, some of which are useful in treating arrhythmias.
contra indication give oral beta blocker for at least 1 year, if tolerated.
vagal tone was increased by beta blocker therapy, even under conditions of stress.
Spectral analysis showed that cardiac vagal tone was increased by beta blocker therapy, even under conditions of stress.
If the child is being treated with beta blocker medications commonly used to treat high blood pressure, angina, thyroid disorders, migraines, or glaucoma, it may be difficult to reverse an anaphylactic reaction.
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