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This review strongly suggests that isoproterenol may not have an effect on stimulating vasovagal syncope during upright tilt testing.We recommend protocols of passive tilt testing procedures at 60 degrees for 45 to 60 minutes since the overall specificity is higher with this method.The use of isoproterenol during tilt testing adds to the cost and complexity of the test,is associated with a higher rate of false-positive responses. leads to potential complications and,thus,should be avoided. |
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