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  • Title: Isoproterenol-induced panic attacks.
    Author: Pohl R, Yeragani VK, Balon R, Rainey JM, Lycaki H, Ortiz A, Berchou R, Weinberg P.
    Journal: Biol Psychiatry; 1988 Dec; 24(8):891-902. PubMed ID: 3069135.
    Abstract:
    Eighty-six panic disorder patients and 45 nonpsychiatric controls were infused with isoproterenol at a rate of 1 microgram/min for up to 20 min in a placebo-controlled, double-blind study. Sixty-six percent of panic disorder patients experienced panic attacks during isoproterenol infusions, compared to 16% during placebo infusions. Nine percent of control subjects panicked with isoproterenol, but none panicked with placebo. Patients were more sensitive than controls to the anxiogenic effects of isoproterenol, as measured by subject self-ratings on a panic description scale. The frequency of panic attacks induced in patients was related to the dosage of isoproterenol; 79% of the patients who received a mean of 18.5 ng/min/kg of isoproterenol panicked. The panic attacks experienced by patients during isoproterenol infusions were similar to those experienced during placebo infusions.
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