Navigation Links
Early cystic fibrosis lung disease detected by bronchoalveolar lavage and lung clearance index
Date:1/26/2012

The lung clearance index (LCI) is a sensitive non-invasive marker of early lung disease in young children with cystic fibrosis (CF), according to a new study from Australian researchers.

"We found that LCI is elevated early in children with CF, especially in the presence of airway inflammation and Pseudomonas aeruginosa," said Yvonne Belessis, MBBS, MPH, PhD, respiratory staff specialist at the Sydney Children's Hospital. "LCI may not only be a marker of early CF lung disease, but may be useful as an objective outcome measure in future studies of young children with CF."

The findings were published online ahead of print publication in the American Thoracic Society's American Journal of Respiratory and Critical Care Medicine.

LCI was determined after multiple breath washout (MBW) testing in 47 presymptomatic/minimally symptomatic infants and young children with CF (mean age 1.55 years) and 25 healthy control children (mean age 1.26 years). Bronchoalveolar lavage (BAL) was also performed in the children with CF.

Mean (SD) LCI in children with CF was 7.21 (0.81), compared with 6.45 (0.49) in control children (P<.001). The upper limit of normal for LCI was 7.41. Among the 47 children with CF, 15 (32%) had an elevated LCI. Measurements of LCI were repeatable and reproducible.

Airway infection (≥105 cfu/mL BAL fluid) was detected in 17 (36%) children with CF, including 7 (15%) children who had Pseudomonas aeruginosa infection. LCI in children with Pseudomonas was 7.92 (1.16), compared with 7.02 (0.56) in children without Pseudomonas (P=.038). LCI was significantly correlated with the BAL inflammatory markers interleukin-8 and neutrophil count.

There were some limitations to the study, including the lack of a robust measure of structural lung disease and a higher diagnostic threshold for airway infection than has been used in other BAL studies.

"We obtained reproducible measurements of LCI at the bedside of sedated infants and young children using a portable MBW system," said Dr. Belessis. "Compared with healthy controls, LCI was elevated in well infants and young children with CF, and abnormal LCI was associated with Pseudomonas aeruginosa infection and airway inflammation.

"Our results show that the LCI is a feasible, sensitive and repeatable non-invasive marker of early lung disease in well infants and young children with CF. Longitudinal assessment of the LCI taking into consideration changes in inflammation and airway infection over time are needed to confirm these findings."


'/>"/>

Contact: Nathaniel Dunford
ndunford@thoracic.org
212-315-8620
American Thoracic Society
Source:Eurekalert

Related medicine news :

1. Optimal Heart Health Starts Early: Study
2. Drug May Slow Early Prostate Cancer: Study
3. Rate of physician referrals nearly doubled
4. Small Stem Cell Study Claims Early Success in Treating Eye Disease
5. New test offers greater accuracy in early detection of colorectal cancer
6. JCI online early table of contents: Jan. 17, 2012
7. Is Continued Lip-Reading an Early Sign of Autism?
8. Tests Might Someday Help Spot Early Lung Cancer
9. Disruption of biological clocks causes neurodegeneration, early death
10. Early-stage breast cancer patients lack knowledge; may not receive treatment they prefer
11. Hopkins researchers find Google Flu Trends a powerful early warning system for emergency departments
Post Your Comments:
*Name:
*Comment:
*Email:
(Date:10/13/2017)... ... 2017 , ... Coveros, a leader in agile coaching services ... by the Center for Medicare and Medicaid Services (CMS). The Enterprise Agile Transformation ... Agile methodologies in a consistent and high value manner across CMS programs. Coveros ...
(Date:10/12/2017)... ... October 12, 2017 , ... CitiDent and San Francisco dentists, ... cutting-edge Oventus O2Vent technology. As many as 18 million Americans are estimated to ... breathing. Oral appliances can offer significant relief to about 75 percent of people ...
(Date:10/12/2017)... ... , ... The American College of Medical Informatics (ACMI) will present the 2017 ... Session of AMIA’s Annual Symposium in Washington, D.C. AMIA’s Annual Symposium is ... pioneer in the field of medical informatics, this prestigious award is presented to an ...
(Date:10/12/2017)... ... 2017 , ... HMP , a leader in healthcare events and education, today ... Digital Award for ‘Best B-to-B Healthcare Website.’ Winners were announced during the Eddie & ... award competition recognizes editorial and design excellence across a range of sectors. This year’s ...
(Date:10/12/2017)... ... ... Health Literacy Innovations (HLI), creator of the Health Literacy ... Patient Education Network (CPEN), an independent professional organization that shares best practices in ... , As CPEN’s strategic partner, HLI will help support CPEN members by sharing ...
Breaking Medicine News(10 mins):
(Date:10/11/2017)... Oct. 11, 2017  Hill-Rom Holdings, Inc. ("Hill-Rom") (NYSE: ... facility in Las Piedras, Puerto Rico ... blades. Following ... facility sustained minor structural damage, temporary loss of power ... have been completed, manufacturing operations have resumed, and the ...
(Date:10/5/2017)... , Oct. 5, 2017  In response ... of Oral and Maxillofacial Surgeons (AAOMS) released prescribing ... – to be used as a first-line therapy ... Recognizing the ... AAOMS White Paper "Opioid Prescribing: Acute and Postoperative ...
(Date:10/2/2017)... 2, 2017 Diplomat Pharmacy, Inc. (NYSE: ... and Consulting, LLC , and named its founder as ... in Tennessee , will operate under ... EnvoyHealth,s service offerings for health care partners to include ... "In an interoperable world, technology delivers ...
Breaking Medicine Technology: