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2017 ; 17
(1
): 59
Nephropedia Template TP
gab.com Text
Twit Text FOAVip
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English Wikipedia
Electromagnetic navigation bronchoscopy to access lung lesions in 1,000 subjects:
first results of the prospective, multicenter NAVIGATE study
#MMPMID28399830
Khandhar SJ
; Bowling MR
; Flandes J
; Gildea TR
; Hood KL
; Krimsky WS
; Minnich DJ
; Murgu SD
; Pritchett M
; Toloza EM
; Wahidi MM
; Wolvers JJ
; Folch EE
BMC Pulm Med
2017[Apr]; 17
(1
): 59
PMID28399830
show ga
BACKGROUND: Electromagnetic navigation bronchoscopy (ENB) is an image-guided,
minimally invasive approach that uses a flexible catheter to access pulmonary
lesions. METHODS: NAVIGATE is a prospective, multicenter study of the
superDimension? navigation system. A prespecified 1-month interim analysis of the
first 1,000 primary cohort subjects enrolled at 29 sites in the United States and
Europe is described. Enrollment and 24-month follow-up are ongoing. RESULTS: ENB
index procedures were conducted for lung lesion biopsy (n?=?964), fiducial marker
placement (n?=?210), pleural dye marking (n?=?17), and/or lymph node biopsy
(n?=?334; primarily endobronchial ultrasound-guided). Lesions were in the
peripheral/middle lung thirds in 92.7%, 49.7% were <20 mm, and 48.4% had a
bronchus sign. Radial EBUS was used in 54.3% (543/1,000 subjects) and general
anesthesia in 79.7% (797/1,000). Among the 964 subjects (1,129 lesions)
undergoing lung lesion biopsy, navigation was completed and tissue was obtained
in 94.4% (910/964). Based on final pathology results, ENB-aided samples were read
as malignant in 417/910 (45.8%) subjects and non-malignant in 372/910 (40.9%)
subjects. An additional 121/910 (13.3%) were read as inconclusive. One-month
follow-up in this interim analysis is not sufficient to calculate the true
negative rate or diagnostic yield. Tissue adequacy for genetic testing was 80.0%
(56 of 70 lesions sent for testing). The ENB-related pneumothorax rate was 4.9%
(49/1,000) overall and 3.2% (32/1,000) CTCAE Grade ?2 (primary endpoint). The
ENB-related Grade ?2 bronchopulmonary hemorrhage and Grade ?4 respiratory failure
rates were 1.0 and 0.6%, respectively. CONCLUSIONS: One-month results of the
first 1,000 subjects enrolled demonstrate low adverse event rates in a
generalizable population across diverse practice settings. Continued enrollment
and follow-up are required to calculate the true negative rate and delineate the
patient, lesion, and procedural factors contributing to diagnostic yield. TRIAL
REGISTRATION: ClinicalTrials.gov NCT02410837 . Registered 31 March 2015.