Navigation Links
New look at old test may provide earlier detection of meningitis, MU researchers find
Date:10/30/2013

COLUMBIA, Mo. ― Researchers from the University of Missouri School of Medicine have found a more accurate method to screen for bacterial meningococcal infection in its early stages, when it's hardest to detect. According to the researchers, the method for diagnosis could save lives by getting patients treatment earlier, when the infection is most treatable.

While meningococcal infection is relatively rare, affecting approximately 2,500 people per year in the United States, it is a devastating disease. It kills seven to 15 percent of those who acquire the infection, and often causes permanent complications for survivors, such as brain damage and hearing loss. Many patients also require amputation of limbs because the disease can cause severe tissue damage to extremities.

Immediate treatment is important in meningococcal infection because it usually progresses rapidly within eight to twelve hours. Some patients may die within as little as 12 to 24 hours after onset of symptoms, which can include a sudden high fever, severe headache, neck stiffness and mental confusion. About half of patients with the infection have a rash.

"When we talk about early diagnosis, we're not talking about days, but rather hours and even minutes," said Michael Cooperstock, M.D., professor of child health in the Division of Pediatric Infectious Diseases at the MU School of Medicine, medical director of infection control at University of Missouri Health Care and senior author of the study.

"Diagnosis of most bacterial infections traditionally has relied upon the detection of an increase in the total number of white blood cells," Cooperstock said. "That's because an increase in a patient's white blood cell count is an indication of acute inflammation associated with infection."

However, in their study of 216 cases from the U.S. Multicenter Meningococcal Surveillance Study, MU researchers found that 33 percent of the patients with active infections had total white blood cell counts that appeared normal. After examining the patients' blood tests more closely, the researchers found that a better indicator of infection was not the total white blood cell count but rather abnormalities in two particular types of white blood cells called neutrophils.

"When we looked at the neutrophil counts of each patient, we examined not only the total number of neutrophils, but also the number of immature neutrophils and the ratio of immature to total neutrophil cells," Cooperstock said. "We found that 94 percent of the patients showed an abnormality of one or more of these three tests, indicating a serious infection might be present. Reliance on the total white blood cell count alone, however, would have given false reassurance that infection was not present in more than 30 percent of those cases."

Neutrophils are the most abundant type of white blood cells, acting as first responders to help fight infection, particularly bacterial infections. Mature neutrophil cells are called segmented neutrophils, and immature cells are known as band neutrophils.

"Our study suggests that physicians should look not at the total white cell count but at the total number of neutrophils, the total number of band neutrophils and the ratio of band to total neutrophils as an indicator that could lead to a suspicion of meningococcal infection," Cooperstock said. "If any of the three neutrophil indicators are outside a certain range, there is a possibility that the patient has a serious bacterial infection, including the possibility of meningococcal disease, and would need careful attention."

Cooperstock also pointed out that although automated white cell counts, a method used in many emergency rooms and clinics, may be quicker, they do not measure neutrophil bands and could lead to a missed diagnosis.

"Our purpose with the publication of this study is to point out the best way to evaluate neutrophil counts when ordering blood analysis," Cooperstock said. "That's especially important for children with fever, who often may not present with typical meningococcal symptoms."


'/>"/>

Contact: Jeff Hoelscher
hoelscherj@missouri.edu
573-884-1608
University of Missouri-Columbia
Source:Eurekalert  

Related medicine news :

1. New online portal, app provide information on tsunami zones in the Northwest
2. Adding drug to standard chemotherapy provides no survival benefit for older lung cancer patients
3. Study of half siblings provides genetic clues to autism
4. Physicians mindfulness skills can improve care for patient and provider
5. Everyday fish oil capsule may provide kidney-related benefits
6. Partnership provides inclusive workout
7. 16th-century Korean mummy provides clue to hepatitis B virus genetic code
8. Mutations in JAK3 gene identified in subtype of lymphoma provide potential drug target
9. InsuranceCalculator.net Now Provides Competitive Car Insurance Quotes To Missouri Drivers
10. SEOMiracle.com Provides SEO Services with PayPal Verified Option
11. InsuranceCalculator.net Now Provides Competitive Car Insurance Quotes To Maryland Drivers
Post Your Comments:
*Name:
*Comment:
*Email:
Related Image:
New look at old test may provide earlier detection of meningitis, MU researchers find
(Date:6/27/2016)... Viejo, California (PRWEB) , ... June 27, 2016 , ... ... are fully customizable inside of Final Cut Pro X," said Christina Austin - CEO ... another unique style. Final Cut Pro X users can now reveal the ...
(Date:6/26/2016)... , ... June 27, 2016 , ... Quality metrics are ... in many ways they remain in the eye of the beholder, according to experts ... publication of The American Journal of Managed Care. For the full issue, click ...
(Date:6/26/2016)... Lake Orion, Clarkston, Michigan (PRWEB) , ... June ... ... direction with respect to fertility once they have been diagnosed with endometriosis. These ... tolerable intercourse but they also require a comprehensive approach that can help for ...
(Date:6/25/2016)... ... 2016 , ... First Choice Emergency Room , the largest network of ... Medical Director of its new Mesquite-Samuell Farm facility. , “We are pleased to ... said Dr. James M. Muzzarelli, Executive Medical Director of First Choice Emergency Room. ...
(Date:6/24/2016)... ... , ... A recent article published June 14 on E Online ... on to state that individuals are now more comfortable seeking to undergo not only ... calf and cheek reduction. The Los Angeles area medical group, Beverly Hills Physicians (BHP) ...
Breaking Medicine News(10 mins):
(Date:6/23/2016)... , June 23, 2016 Roche (SIX: ... 510(k) clearance for its Elecsys BRAHMS PCT (procalcitonin) assay ... sepsis or septic shock. With this clearance, Roche is ... a fully integrated solution for sepsis risk assessment and ... with bacterial infection and PCT levels in blood can ...
(Date:6/23/2016)... , , , WHEN: , , ... , , , LOCATION: , , , Online, with free registration ... PANELISTS:  , , , Frost & Sullivan,s Global Vice President of ... Analyst, Divyaa Ravishankar and Unmesh Lal, Program Manager , ... witnessing an exceptional era. Several new demand spaces, such as innovative ...
(Date:6/23/2016)... MEDIA, Pa. , June 23, 2016 ... treatments in an outpatient dialysis facility.  Treatments are usually ... to 6 hours per visit, including travel time, equipment ... on a patient, but especially grueling for patients who ... residents of a skilled nursing and rehabilitation centers for ...
Breaking Medicine Technology: