“While adverse reactions to iodinated contrast media are rare, they are encountered regularly by all physicians who administer contrast material to patients and some of these reactions will require treatment,” said Richard Cohan, MD, lead author of the study.
“We reviewed our experience to determine how often we encountered these reactions in our practice and how often the reactions required treatment. We also wanted to know what happened to those patients who required treatment, particularly when they had reactions that were moderate or severe,” said Dr. Cohan.
The study consisted of 84,928 IV injections of nonionic iodinated contrast media in adults. In this group, there were 545 (0.6%) patients who had allergic-like reactions, with 221 receiving treatment. The most commonly administered medications were diphenhydramine to 145 (27%) reacting patients, corticosteroids to 17 patients, albuterol to 16 patients, ephinephine to 15 patients, and nitroglycerin to eight patients. According to the study, 99% of the allergic-like reactions resolved completely within 24 hours. This included all 418 patients who had mild reactions, all 116 patients who had moderate reactions, and nine of the 11 patients who had severe reactions.
“Commonly used medications can be administered safely; however, treatment errors are not uncommon and in a few instances can lead to patient morbidity,” said Dr. Cohan. “In our study, we found a number of instances in which non-recommended treatment was provided. These cases included the administration of oxygen by nasal cannula (rather than mask) and at lower than recommended doses, over-utilization of diphenhydramine (including to a few patients who were hypotensive), and the administration of higher than recommended doses of epinephrine, as well as occasional confusion about which concentrations of epinephrine should be injected in which manner (subcutaneously or intravenously).
In our study, the most striking example of patient morbidity from non-recommended treatment occurred in the two patients who received doses of 1 mg of epinephrine in the absence of cardiopulmonary arrest, who both had cardiac complications. Fortunately, these complications were mild and transient and caused no serious morbidity,” he said.
“We hope that after reading our study, radiologists, nurses, and technologists will agree that they must review the algorithms for treating contrast reactions on a regular basis (particularly issues related to diphenhydramine, oxygen, and epinephrine administration),” said Dr. Cohan. “In fact, we would suggest that such a review should probably occur at least twice a year. However, it is also consoling to know that even when patients have moderate or severe contrast reactions, the vast majority recover promptly and without any long term complications,” he said.
This study appears in the August issue of the American Journal of Roentgenology.
Necoya Tyson | Newswise Science News
Win-win strategies for climate and food security
02.10.2017 | International Institute for Applied Systems Analysis (IIASA)
The personality factor: How to foster the sharing of research data
06.09.2017 | ZBW – Leibniz-Informationszentrum Wirtschaft
University of Maryland researchers contribute to historic detection of gravitational waves and light created by event
On August 17, 2017, at 12:41:04 UTC, scientists made the first direct observation of a merger between two neutron stars--the dense, collapsed cores that remain...
Seven new papers describe the first-ever detection of light from a gravitational wave source. The event, caused by two neutron stars colliding and merging together, was dubbed GW170817 because it sent ripples through space-time that reached Earth on 2017 August 17. Around the world, hundreds of excited astronomers mobilized quickly and were able to observe the event using numerous telescopes, providing a wealth of new data.
Previous detections of gravitational waves have all involved the merger of two black holes, a feat that won the 2017 Nobel Prize in Physics earlier this month....
Material defects in end products can quickly result in failures in many areas of industry, and have a massive impact on the safe use of their products. This is why, in the field of quality assurance, intelligent, nondestructive sensor systems play a key role. They allow testing components and parts in a rapid and cost-efficient manner without destroying the actual product or changing its surface. Experts from the Fraunhofer IZFP in Saarbrücken will be presenting two exhibits at the Blechexpo in Stuttgart from 7–10 November 2017 that allow fast, reliable, and automated characterization of materials and detection of defects (Hall 5, Booth 5306).
When quality testing uses time-consuming destructive test methods, it can result in enormous costs due to damaging or destroying the products. And given that...
Using a new cooling technique MPQ scientists succeed at observing collisions in a dense beam of cold and slow dipolar molecules.
How do chemical reactions proceed at extremely low temperatures? The answer requires the investigation of molecular samples that are cold, dense, and slow at...
Scientists from the Max Planck Institute of Quantum Optics, using high precision laser spectroscopy of atomic hydrogen, confirm the surprisingly small value of the proton radius determined from muonic hydrogen.
It was one of the breakthroughs of the year 2010: Laser spectroscopy of muonic hydrogen resulted in a value for the proton charge radius that was significantly...
17.10.2017 | Event News
10.10.2017 | Event News
10.10.2017 | Event News
20.10.2017 | Information Technology
20.10.2017 | Materials Sciences
20.10.2017 | Interdisciplinary Research