Clinical safety of gadopentetate dimeglumine.

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Abstract
To quantify the rate of adverse reactions to gadopentetate dimeglumine. Magnetic resonance (MR) imaging was performed in 15,496 patients in April-September 1992. Data were collected before and after intravenous administration of 0.1 mmol/kg gadopentetate dimeglumine. Adverse reactions occurred in 2.4% (n = 372) of patients. Symptoms abated the same or next day in 94.1% (n = 350). Whereas onset occurred within 30 minutes after injection in 49.7% (n = 185), onset occurred more than 1 hour after injection in 44.9% (n = 167). Two serious adverse reactions occurred and were attributed to underlying disease. The rate of adverse reaction was 3.7% in patients with a history of asthma (31 of 831 patients) or allergy (144 of 3,860 patients). Patients with previous reactions to an MR imaging or iodinated contrast agent had an adverse-reaction rate in this study of 21.3% (16 of 75) and 6.3% (54 of 857), respectively. The rate of adverse reaction was 2.2% when gadopentetate dimeglumine was administered slowly and 2.9% when it was administered rapidly. Findings confirm the safety of gadopentetate dimeglumine.

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