Researchers examined the records of 5,300 patients who were brought to Loyola's emergency room by emergency medical services (EMS). Paramedics were able to identify stroke patients with a 99.3 percent specificity. (In diagnosing disease, a high specificity rate indicates there's a high probability the patient actually has the disease.)
"If a paramedic thinks a patient is having a stroke, that should be a reliable indicator that the hospital's stroke team should be activated," said Dr. Michael Schneck, a co-author of the study, which will be presented at the 64th annual meeting of the American Academy of Neurology in New Orleans.
Dr. Mark Cichon, who heads Loyola's emergency room and is another co-author, said the findings illustrate that paramedics "are very well trained in stroke recognition." He added that stroke is one of many emergency conditions in which paramedics are trained to initiate treatment before the patient arrives at the hospital.
Schneck is a professor in the departments of Neurology and Neurological Surgery of Loyola University Chicago Stritch School of Medicine and medical director of the Neurosciences Intensive Care Unit. Cichon is a professor in the Department of Surgery and division director of Emergency Medical Services. Other co-authors are Elizabeth Wild (first author); Yongwoo Kim, MD; Alexander Venizelos, MD; and David Hyman.
Most strokes are caused by blood clots in the brain. If given promptly, the clot-busting drug tPA, in certain cases, can dissolve the clot and stop the stroke before it causes permanent damage. But before tPA is given, a patient must undergo a CT scan to confirm the stroke is caused by a clot. (About 15 percent of strokes are caused by bleeding in the brain; in such cases, administering tPA could make strokes worse.)
Since every minute counts, hospitals are striving to reduce the "door-to-needle" time -- the length of time it takes from when a stroke patient arrives at the emergency room door until the patient is given intravenous tPA. One way Loyola is cutting times is by having the ambulance radio ahead when it is bringing in an apparent stroke patient. Loyola's stroke team then is activated and ready to go into action as soon as the patient arrives, Cichon said.
While the EMS specificity rate in identifying strokes was 99.3 percent, the sensitivity rate was only 51 percent. In other words, when paramedics suspected patients were having strokes, they were probably correct -- but they also missed many cases. Of the 96 actual strokes, paramedics correctly identified 49 cases, but missed 47. Paramedics were most likely to miss strokes in patients younger than 45."Sensitivity of EMS impression of stroke still requires improvement to reduce time to treatment for acute stroke patients," researchers wrote.
Loyola provides evidence-based, specialized stroke care 24 hours a day, seven days a week. Loyola is certified by the Joint Commission as an Advanced Primary Stroke Center. It is staffed by board-certified vascular neurologists and a multidisciplinary stroke team.
For three years in a row, Loyola has won a Get with the Guidelines® Stroke Gold Plus Performance Achievement Award from the American Heart Association/American Stroke Association.
Jim Ritter | EurekAlert!
The end of pneumonia? New vaccine offers hope
23.10.2017 | University at Buffalo
Scientists track ovarian cancers to site of origin: Fallopian tubes
23.10.2017 | Johns Hopkins Medicine
Salmonellae are dangerous pathogens that enter the body via contaminated food and can cause severe infections. But these bacteria are also known to target...
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...
23.10.2017 | Event News
17.10.2017 | Event News
10.10.2017 | Event News
23.10.2017 | Life Sciences
23.10.2017 | Physics and Astronomy
23.10.2017 | Health and Medicine