The Experts below are selected from a list of 27 Experts worldwide ranked by ideXlab platform

Pw Francis - One of the best experts on this subject based on the ideXlab platform.

  • Series of laryngomalacia, tracheomalacia, and bronchomalacia disorders and their associations with other conditions in children.
    Pediatric pulmonology, 2002
    Co-Authors: Ian B. Masters, Bw Dean, Anne B. Chang, L. Patterson, Claire E. Wainwright, Helen M. Buntain, Pw Francis
    Abstract:

    Laryngomalacia, bronchomalacia, and tracheomalacia are commonly seen in Pediatric Respiratory Medicine, yet their patterns and associations with other conditions are not well-understood. We prospectively video-recorded bronchoscopic data and clinical information from referred patients over a 10-year period and defined aspects of interrelationships and associations. Two hundred and ninety-nine cases of malacia disorders (34%) were observed in 885 bronchoscopic procedures. Cough, wheeze, stridor, and radiological changes were the most common symptoms and signs. The lesions were most often found in males (2:1) and on the left side (1.6:1). Concomitant malacia lesions ranged from 24% for laryngotracheobronchomalacia to 47% for tracheobronchomalacia. The lesions were found in association with other disorders such as congenital heart disorders (13.7%), tracheo-esophageal fistula (9.6%), and various syndromes (8%). Even though the understanding of these disorders is in its infancy, Pediatricians should maintain a level of awareness for malacia lesions and consider the possibility of multiple lesions being present, even when one symptom predominates or occurs alone.

  • Series of laryngomalacia, tracheomalacia, and bronchomalacia disorders and their associations with other conditions in children
    'Wiley', 2002
    Co-Authors: Ib Masters, Ab Chang, Patterson L, Wainwright C, Buntain H, Bw Dean, Pw Francis
    Abstract:

    Laryngomalacia, bronchomalacia, and tracheomalacia are commonly seen in Pediatric Respiratory Medicine, yet their patterns and associations with other conditions are not well-understood. We prospectively video-recorded bronchoscopic data and clinical information from referred patients over a 10-year period and defined aspects of interrelationships and associations

Ian B. Masters - One of the best experts on this subject based on the ideXlab platform.

  • quantification of the magnification and distortion effects of a Pediatric flexible video bronchoscope
    Respiratory Research, 2005
    Co-Authors: Ian B. Masters, Anne B. Chang, Matthew M Eastburn, Paul V Francis, R Wootton, P V Zimmerman, Robert S Ware
    Abstract:

    Flexible video bronchoscopes, in particular the Olympus BF Type 3C160, are commonly used in Pediatric Respiratory Medicine. There is no data on the magnification and distortion effects of these bronchoscopes yet important clinical decisions are made from the images. The aim of this study was to systematically describe the magnification and distortion of flexible bronchoscope images taken at various distances from the object. Using images of known objects and processing these by digital video and computer programs both magnification and distortion scales were derived. Magnification changes as a linear function between 100 mm (×1) and 10 mm (×9.55) and then as an exponential function between 10 mm and 3 mm (×40) from the object. Magnification depends on the axis of orientation of the object to the optic axis or geometrical axis of the bronchoscope. Magnification also varies across the field of view with the central magnification being 39% greater than at the periphery of the field of view at 15 mm from the object. However, in the paediatric situation the diameter of the orifices is usually less than 10 mm and thus this limits the exposure to these peripheral limits of magnification reduction. Intraclass correlations for measurements and repeatability studies between instruments are very high, r = 0.96. Distortion occurs as both barrel and geometric types but both types are heterogeneous across the field of view. Distortion of geometric type ranges up to 30% at 3 mm from the object but may be as low as 5% depending on the position of the object in relation to the optic axis. We conclude that the optimal working distance range is between 40 and 10 mm from the object. However the clinician should be cognisant of both variations in magnification and distortion in clinical judgements.

  • Series of laryngomalacia, tracheomalacia, and bronchomalacia disorders and their associations with other conditions in children.
    Pediatric pulmonology, 2002
    Co-Authors: Ian B. Masters, Bw Dean, Anne B. Chang, L. Patterson, Claire E. Wainwright, Helen M. Buntain, Pw Francis
    Abstract:

    Laryngomalacia, bronchomalacia, and tracheomalacia are commonly seen in Pediatric Respiratory Medicine, yet their patterns and associations with other conditions are not well-understood. We prospectively video-recorded bronchoscopic data and clinical information from referred patients over a 10-year period and defined aspects of interrelationships and associations. Two hundred and ninety-nine cases of malacia disorders (34%) were observed in 885 bronchoscopic procedures. Cough, wheeze, stridor, and radiological changes were the most common symptoms and signs. The lesions were most often found in males (2:1) and on the left side (1.6:1). Concomitant malacia lesions ranged from 24% for laryngotracheobronchomalacia to 47% for tracheobronchomalacia. The lesions were found in association with other disorders such as congenital heart disorders (13.7%), tracheo-esophageal fistula (9.6%), and various syndromes (8%). Even though the understanding of these disorders is in its infancy, Pediatricians should maintain a level of awareness for malacia lesions and consider the possibility of multiple lesions being present, even when one symptom predominates or occurs alone.

Anne B. Chang - One of the best experts on this subject based on the ideXlab platform.

  • quantification of the magnification and distortion effects of a Pediatric flexible video bronchoscope
    Respiratory Research, 2005
    Co-Authors: Ian B. Masters, Anne B. Chang, Matthew M Eastburn, Paul V Francis, R Wootton, P V Zimmerman, Robert S Ware
    Abstract:

    Flexible video bronchoscopes, in particular the Olympus BF Type 3C160, are commonly used in Pediatric Respiratory Medicine. There is no data on the magnification and distortion effects of these bronchoscopes yet important clinical decisions are made from the images. The aim of this study was to systematically describe the magnification and distortion of flexible bronchoscope images taken at various distances from the object. Using images of known objects and processing these by digital video and computer programs both magnification and distortion scales were derived. Magnification changes as a linear function between 100 mm (×1) and 10 mm (×9.55) and then as an exponential function between 10 mm and 3 mm (×40) from the object. Magnification depends on the axis of orientation of the object to the optic axis or geometrical axis of the bronchoscope. Magnification also varies across the field of view with the central magnification being 39% greater than at the periphery of the field of view at 15 mm from the object. However, in the paediatric situation the diameter of the orifices is usually less than 10 mm and thus this limits the exposure to these peripheral limits of magnification reduction. Intraclass correlations for measurements and repeatability studies between instruments are very high, r = 0.96. Distortion occurs as both barrel and geometric types but both types are heterogeneous across the field of view. Distortion of geometric type ranges up to 30% at 3 mm from the object but may be as low as 5% depending on the position of the object in relation to the optic axis. We conclude that the optimal working distance range is between 40 and 10 mm from the object. However the clinician should be cognisant of both variations in magnification and distortion in clinical judgements.

  • Series of laryngomalacia, tracheomalacia, and bronchomalacia disorders and their associations with other conditions in children.
    Pediatric pulmonology, 2002
    Co-Authors: Ian B. Masters, Bw Dean, Anne B. Chang, L. Patterson, Claire E. Wainwright, Helen M. Buntain, Pw Francis
    Abstract:

    Laryngomalacia, bronchomalacia, and tracheomalacia are commonly seen in Pediatric Respiratory Medicine, yet their patterns and associations with other conditions are not well-understood. We prospectively video-recorded bronchoscopic data and clinical information from referred patients over a 10-year period and defined aspects of interrelationships and associations. Two hundred and ninety-nine cases of malacia disorders (34%) were observed in 885 bronchoscopic procedures. Cough, wheeze, stridor, and radiological changes were the most common symptoms and signs. The lesions were most often found in males (2:1) and on the left side (1.6:1). Concomitant malacia lesions ranged from 24% for laryngotracheobronchomalacia to 47% for tracheobronchomalacia. The lesions were found in association with other disorders such as congenital heart disorders (13.7%), tracheo-esophageal fistula (9.6%), and various syndromes (8%). Even though the understanding of these disorders is in its infancy, Pediatricians should maintain a level of awareness for malacia lesions and consider the possibility of multiple lesions being present, even when one symptom predominates or occurs alone.

Bw Dean - One of the best experts on this subject based on the ideXlab platform.

  • Series of laryngomalacia, tracheomalacia, and bronchomalacia disorders and their associations with other conditions in children.
    Pediatric pulmonology, 2002
    Co-Authors: Ian B. Masters, Bw Dean, Anne B. Chang, L. Patterson, Claire E. Wainwright, Helen M. Buntain, Pw Francis
    Abstract:

    Laryngomalacia, bronchomalacia, and tracheomalacia are commonly seen in Pediatric Respiratory Medicine, yet their patterns and associations with other conditions are not well-understood. We prospectively video-recorded bronchoscopic data and clinical information from referred patients over a 10-year period and defined aspects of interrelationships and associations. Two hundred and ninety-nine cases of malacia disorders (34%) were observed in 885 bronchoscopic procedures. Cough, wheeze, stridor, and radiological changes were the most common symptoms and signs. The lesions were most often found in males (2:1) and on the left side (1.6:1). Concomitant malacia lesions ranged from 24% for laryngotracheobronchomalacia to 47% for tracheobronchomalacia. The lesions were found in association with other disorders such as congenital heart disorders (13.7%), tracheo-esophageal fistula (9.6%), and various syndromes (8%). Even though the understanding of these disorders is in its infancy, Pediatricians should maintain a level of awareness for malacia lesions and consider the possibility of multiple lesions being present, even when one symptom predominates or occurs alone.

  • Series of laryngomalacia, tracheomalacia, and bronchomalacia disorders and their associations with other conditions in children
    'Wiley', 2002
    Co-Authors: Ib Masters, Ab Chang, Patterson L, Wainwright C, Buntain H, Bw Dean, Pw Francis
    Abstract:

    Laryngomalacia, bronchomalacia, and tracheomalacia are commonly seen in Pediatric Respiratory Medicine, yet their patterns and associations with other conditions are not well-understood. We prospectively video-recorded bronchoscopic data and clinical information from referred patients over a 10-year period and defined aspects of interrelationships and associations

Heather J Zar - One of the best experts on this subject based on the ideXlab platform.

  • Pediatric Respiratory Medicine an international perspective
    Pediatric Pulmonology, 2010
    Co-Authors: Monika Gappa, Louis I Landau, Thomas W Ferkol, Thomas Kovesi, Susanna A Mccolley, Ignacio Sanchez, Asher Tal, Gary W K Wong, Heather J Zar
    Abstract:

    Although Pediatric Respiratory Medicine as a subspecialty has a long tradition and is well established in some countries, there is a wide variation across different regions of the world with regard to e.g. recognition of the discipline, training requirements, training facilities and clinical needs. This review summarizes the situation in North America (US and Canada), South America, Asia, Australia, Israel and Europe with the aim to highlight commonalities and differences and, ultimately, to further support continuous development of paediatric Respiratory Medicine Worldwide.