Coronial
NSWhospital

Inquest into the death of Aidan Mara

Deceased

Aidan Mara

Demographics

3y, male

Coroner

Decision ofDeputy State Coroner O'Sullivan

Date of death

2014-07-29

Finding date

2018-06-29

Cause of death

Influenza A infection (Type H3N2)

AI-generated summary

Aidan Mara, a 3-year-old boy with influenza A pneumonia and hyponatraemia, collapsed and died from cardiovascular failure on hospital day 3. Critical clinical lessons include: (1) distinguishing SIADH from dehydration early using osmolality testing—treatments are opposite; (2) never discontinuing essential treatments (oxygen) without medical team consultation; (3) avoiding fixation errors by using basic clinical assessment (checking breathing/perfusion) rather than over-relying on monitoring equipment; (4) ensuring earlier albumin replacement for hypoalbuminaemia; and (5) implementing multidisciplinary high-acuity flagging systems (CHAP). The nurses removed oxygen without physician approval and then became fixated on troubleshooting monitors rather than performing immediate bedside checks when Aidan collapsed, delaying resuscitation by ~14 minutes. Early proactive differentiation of hyponatraemia cause and appropriate rehydration plus albumin may have prevented death.

AI-generated summary and tagging — may contain inaccuracies; refer to original finding for legal purposes. Report an inaccuracy.

Specialties

paediatricsemergency medicineintensive carepathology

Error types

diagnosticcommunicationproceduraldelay

Drugs involved

cefotaximeclindamycingentamicinbenzylpenicillinfurosemideparacetamolibuprofenamoxicillin

Clinical conditions

influenza a pneumoniasepsishyponatraemiasyndrome of inappropriate antidiuretic hormonedehydrationhypoalbuminaemiahypovolaemiahypoxemiacardiovascular collapseotitis media

Procedures

indwelling urinary catheter insertionurinary catheter removalfluid resuscitationintravenous cannulationoxygen administrationchest X-raycardiac resuscitation

Contributing factors

  • Hyponatraemia with unclear aetiology (SIADH vs dehydration) inadequately differentiated
  • Hypoalbuminaemia not replaced with timely albumin infusion
  • Removal of supplemental oxygen without medical team consultation or trial at room air
  • Lack of supervised monitoring during showering
  • Fixation error by nursing staff focusing on monitoring equipment malfunction rather than bedside clinical assessment
  • Delay of approximately 14 minutes from collapse to emergency resuscitation call
  • Possible blocked catheter causing misdiagnosis of urine output status
  • Dehydration and intravascular depletion inadequately managed despite clues (thirst, concentrated urine, low albumin)

Coroner's recommendations

  1. Training for nursing staff to address the phenomenon of fixation errors, particularly as it relates to assessment of results of monitoring equipment
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