title: Management of pinna haematoma study (MaPHaeS): A multicentre retrospective observational study.
abstract: OBJECTIVE
  To assess current variation in the management of pinna haematoma (PH) and its effect on outcomes.
  
  
  METHODS
  Multicentre retrospective observational record-based study.
  
  
  METHODS
  Eleven hospitals around the UK.
  
  
  METHODS
  Eighty-three patients above the age of 16 with PH.
  
  
  METHODS
  The primary outcome measure was recurrence rate of PH over a 6-month period post-treatment, assessed by treatment type (scalpel incision vs needle aspiration). Secondary outcome measures assessed the impact of other factors on recurrence, infection and cosmetic complications of PH over a period of 6 months.
  
  
  RESULTS
  After adjusting for confounding factors, involvement of the whole ear, and management within an operating theatre were associated with a lower rate of recurrence of pinna haematoma. The drainage technique, suspected aetiology, choice of post-drainage management, grade and specialty of practitioner performing drainage, the use of antibiotic cover and hospital admission did not affect the rate of haematoma recurrence, infection or cosmetic complications.
  
  
  CONCLUSIONS
  Where possible PH should be drained in an operating theatre. Multicentre randomized controlled trials are required to further investigate the impact of drainage technique and post-drainage management on outcome.
authors.affiliation: East of England ENT Trainee Research Collaborative, Cambridge, UK.
authors.forename: A
authors.identifier: http://orcid.org/0000-0002-9471-8878
authors.initials: A
authors.lastname: Vijendren
authors.affiliation: East of England ENT Trainee Research Collaborative, Cambridge, UK.
authors.forename: M
authors.initials: M
authors.lastname: Coates
authors.affiliation: East of England ENT Trainee Research Collaborative, Cambridge, UK.
authors.forename: M E
authors.initials: ME
authors.lastname: Smith
authors.affiliation: East of England ENT Trainee Research Collaborative, Cambridge, UK.
authors.forename: O V
authors.initials: OV
authors.lastname: Ajayi
authors.affiliation: East of England ENT Trainee Research Collaborative, Cambridge, UK.
authors.forename: W
authors.initials: W
authors.lastname: Al-Dhahir
authors.affiliation: East of England ENT Trainee Research Collaborative, Cambridge, UK.
authors.forename: J
authors.initials: J
authors.lastname: Bewick
authors.affiliation: East of England ENT Trainee Research Collaborative, Cambridge, UK.
authors.forename: P F
authors.initials: PF
authors.lastname: Bowles
authors.affiliation: East of England ENT Trainee Research Collaborative, Cambridge, UK.
authors.forename: P
authors.initials: P
authors.lastname: Coyle
authors.affiliation: East of England ENT Trainee Research Collaborative, Cambridge, UK.
authors.forename: C R
authors.initials: CR
authors.lastname: Davies-Husband
authors.affiliation: East of England ENT Trainee Research Collaborative, Cambridge, UK.
authors.forename: S E
authors.initials: SE
authors.lastname: Erskine
authors.affiliation: East of England ENT Trainee Research Collaborative, Cambridge, UK.
authors.forename: E
authors.initials: E
authors.lastname: Halliday
authors.affiliation: East of England ENT Trainee Research Collaborative, Cambridge, UK.
authors.forename: A I
authors.initials: AI
authors.lastname: Kaleva
authors.affiliation: Aintree University Hospital NHS Trust, Liverpool, UK.
authors.forename: A
authors.identifier: http://orcid.org/0000-0002-6489-204X
authors.initials: A
authors.lastname: Lau
authors.affiliation: East of England ENT Trainee Research Collaborative, Cambridge, UK.
authors.forename: L
authors.initials: L
authors.lastname: Langstaff
authors.affiliation: East of England ENT Trainee Research Collaborative, Cambridge, UK.
authors.forename: E
authors.initials: E
authors.lastname: Mathew
authors.affiliation: East of England ENT Trainee Research Collaborative, Cambridge, UK.
authors.forename: S
authors.initials: S
authors.lastname: Meghji
authors.affiliation: East of England ENT Trainee Research Collaborative, Cambridge, UK.
authors.forename: A
authors.initials: A
authors.lastname: Testera
authors.affiliation: Aintree University Hospital NHS Trust, Liverpool, UK.
authors.forename: J R V
authors.initials: JRV
authors.lastname: Thomas
authors.affiliation: Luton and Dunstable University Hospital NHS Trust, Luton, UK.
authors.forename: M
authors.initials: M
authors.lastname: Eisenhut
mesh_terms: D000293:Adolescent; D000328:Adult; D000368:Aged; D000369:Aged, 80 and over; D002648:Child; D002675:Child, Preschool; D054644:Ear Auricle; D004427:Ear Diseases / Q000150:complications / Q000453:epidemiology / Q000628:therapy*; D005260:Female; D006406:Hematoma / Q000150:complications / Q000453:epidemiology / Q000628:therapy*; D006801:Humans; D008297:Male; D008875:Middle Aged; D010043:Outcome and Process Assessment, Health Care; D012008:Recurrence; D012189:Retrospective Studies; D006113:United Kingdom; D055815:Young Adult
keywords: drainage; ear auricle; ear pinna; haematoma