Skin testing and adverse reactions in fluorescein: A prospective study
Abstract:Sodium fluorescein (SF) is widely used to assess chorioretinal disorders. Adverse reactions are well documented but the underlying mechanism is still uncertain. The aim of this study was the evaluation of skin testing to predict SF reaction, the identification of possible predisposing factors, and the objective record of the reported reactions. All patients with adequate indication for SF angiography (SFA) during an 18-month period were evaluated as follows: (a) detailed personal history of atopy, diabetes, previous SFA, and/or diagnostic procedures with radiocontrast media (RCM) and possible side effect; (b) skin testing with SF 10% diluted preparations; (c) SFA with 5 mL of SF, objective record of any reaction. Two hundred twenty-four patients (108 men and 116 women) with a mean age of 65.2 years (SD, 12.86; range, 16–92 years) underwent SFA. The overall rate of adverse reactions was 3.6% (8/224), which consists of 5 (2.2%) individuals with transient mild nausea; 2 (0.9%) subjects with face and upper trunk flushing that appeared in one case after 60 minutes and in the other case 24 hours later and both resolved without treatment, and 1 subject with transient bilateral frontal headache and dizziness. None of the 224 patients had positive skin or intradermal testings. One hundred thirty-six of 224 (60.7%) patients stated no previous SFA and 74.1% had not performed RCM injection. None of the recorded variables correlated with increased risk of reaction. SFA is a safe procedure with minor adverse effects. Although in vivo testing can not identify reactors it may help to exclude an underlying IgE-mediated mechanism in susceptible individuals.
Document Type: Research Article
Publication date: 2007-07-01
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