Katherine Mary Langdon

Dr. Katherine Mary Langdon

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Research Focus & Metrics

Academic Career Length

18Years (2009-Present)

(Calculated once Scilit publication data is synced: current year − year of first publication + 1)

Representative Publications

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4 June 2019 in BMC Neurology
Verified
Journal Article
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EBEve Blair
Eve Blair
KLKatherine Mary Langdon
Katherine Mary Langdon
SMSarah McIntyre
Sarah McIntyre
DLDavid Lawrence
David Lawrence
LWLinda Watson
Linda Watson
Likely duration of survival of children described as having cerebral palsy is of considerable interest to individuals with cerebral palsy, their families, carers, health professionals, health economists and insurers. The aim of this paper is to describe patterns of survival and mortality to the sixth decade in a geographically defined population of people with cerebral palsy stratified according to the clinical description of their impairments in early childhood. Identifiers of persons born in Western Australia 1956–2011, registered with cerebral palsy on the Western Australian Register of Developmental Anomalies and surviving at least 12 months, were linked to the Australian National Death Index in December 2014. Patterns of mortality were investigated using survival analysis methods. Of 3185 eligible persons, 436 (13.7%) had died. Of that sample the 22% with the mildest impairment had survival patterns similar to the general population. Mortality increased with increasing severity of impairment. Of 349 (75%) with available cause of death data, 58.6% were attributed to respiratory causes, including 171 (49%) to pneumonia at a mean age of 14.6 (sd 13.4) years of which 77 (45%) were attributed to aspiration. For the most severely impaired, early childhood mortality increased in succeeding decades of birth cohorts from 1950s to 1990 with 20% dying by 4 years of age in the 1981–1990 birth cohort; it then decreased for subsequent birth cohorts, 20% mortality not being attained until 15 years of age. However by 20 years of age mortality of the most severely impaired born in the 1991–2000 birth cohort exceeded that of all other birth cohorts. Remaining life expectancies by age to 50 years have been estimated for two strata with more severe impairments. For 22% of individuals with cerebral palsy with mild impairment survival to 58 years is similar to that of the general population. Since 1990 mortality for those with severe cerebral palsy in Western Australia has tended to shift from childhood to early adulthood.

8 May 2009 in Developmental Medicine & Child Neurology
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Journal Article
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AGAnna Gubbay
Anna Gubbay
KLKatherine Mary Langdon
Katherine Mary Langdon

28 June 2024 in Children
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Journal Article
Open access
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LTLouise Tofts
Louise Tofts
PIPenny Ireland
Penny Ireland
TTTracy Tate
Tracy Tate
SRSupriya Raj
Supriya Raj
TCTheresa Carroll
Theresa Carroll
RSRavi Savarirayan
Ravi Savarirayan
Background: Achondroplasia, the most prevalent skeletal dysplasia, stems from a functional mutation in the fibroblast growth factor receptor 3 gene, leading to growth impairment. This condition presents multifaceted medical, functional and psychosocial challenges throughout childhood, adolescence and adulthood. Current management strategies aim to minimise medical complications, optimise functional capabilities and provide comprehensive supportive care. Vosoritide (trade name: VOXZOGO®, BioMarin Pharmaceuticals) is the first disease-modifying pharmaceutical treatment approved for the management of patients with achondroplasia and became available in Australia in May 2023. Methods: Standardised clinical guidelines for its optimal use are not yet widely available. To address this gap, a multidisciplinary Australian Vosoritide Working Group, comprising 12 experts with experience in achondroplasia management from across Australia, developed recommendations to guide the use of vosoritide in clinical practice. Results: The recommendations, which are expert opinions of the Australian Vosoritide Working Group, aim to (i) standardise the use of vosoritide across Australia, (ii) support the safe clinical rollout of vosoritide and (iii) support universal access. Conclusions: These recommendations have been developed for healthcare professionals and institutions that are engaged in using vosoritide in the management of achondroplasia and will be revised using a formal framework for clinical guideline development once more evidence is available.

6 September 2010 in Developmental Medicine & Child Neurology
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Journal Article
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KLKatherine Mary Langdon
Katherine Mary Langdon
EBEve Blair
Eve Blair
SDSue-Anne Davidson
Sue-Anne Davidson
JVJane Valentine
Jane Valentine

4 October 2019 in Pediatric Drugs
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Journal Article
Closed access
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KLKatherine Mary Langdon
Katherine Mary Langdon
LCLisa Copeland
Lisa Copeland
PEPriya Edwards
Priya Edwards
KRKate Rodwell
Kate Rodwell
KMKim McLennan
Kim McLennan
SOSteve O’fLaherty
Steve O’fLaherty

25 July 2023 in Developmental Medicine & Child Neurology
Verified
Journal Article
Open access
NBNatasha L. Bear
Natasha L. Bear
AWAndrew Wilson
Andrew Wilson
ABA. Marie Blackmore
A. Marie Blackmore
EGElizabeth Geelhoed
Elizabeth Geelhoed
SSShannon Simpson
Shannon Simpson
KLKatherine Mary Langdon
Katherine Mary Langdon
Aim: To establish the burden of respiratory illness in cerebral palsy (CP) on the Western Australian health care system by quantifying the costs of respiratory hospitalizations in children with CP, compared with non‐respiratory hospitalizations.Method: A 2‐year (2014–2015) retrospective study using linked hospital data (excluding emergency department visits), in a population of children with CP in Western Australia aged 18 years and under (median age at hospitalization 7 years; interquartile range 5–12 years).Results: In 671 individuals (57% male) there were 726 emergency hospitalizations, and 1631 elective hospitalizations. Although there were more elective hospitalizations, emergency hospitalizations were associated with longer stays in hospital, and more days in an intensive care unit, resulting in a higher total cost of emergency hospitalizations than elective hospitalizations (total costs: emergency AU$7 748 718 vs elective AU$6 738 187). ‘Respiratory’ was the leading cause of emergency hospitalizations, contributing to 36% of all emergency admission costs. For a group of high‐cost inpatient users (top 5% of individuals with the highest total inpatient costs) the most common reason for hospitalization was ‘respiratory’. Where non‐respiratory admissions were complicated by an additional respiratory diagnosis, length of stay was greater.Interpretation: Respiratory hospitalizations in CP are a significant driver of health care costs. In the paediatric group, they are a burden for a subgroup of children with CP.What this paper adds: Respiratory illness is the most costly area for unplanned, emergency hospitalizations for children and young people with cerebral palsy. The top 5% of individuals with the highest total inpatient costs account for a disproportionate amount of health care costs.