Arch Dis Child 1999;80:51-55 ( January )

Adrenal insufficiency in septic shock

Mark Hatherill, Shane M Tibby, Tom Hilliard, Charles Turner, Ian A Murdoch

Paediatric Intensive Care Unit, Guy's Hospital, St Thomas's Street, London SE1 9RT, UK

Correspondence to: Dr Hatherill. email: m.hatherill{at}umds.ac.uk

Accepted 21 August 1998

BACKGROUNDFunctional adrenal insufficiency has been documented in critically ill adults.
OBJECTIVETo document the incidence of adrenal insufficiency in children with septic shock, and to evaluate its effect on catecholamine requirements, duration of intensive care, and mortality.
SETTINGSixteen-bed paediatric intensive care unit in a university hospital.
METHODSThirty three children with septic shock were enrolled. Adrenal function was assessed by the maximum cortisol response after synthetic adrenocorticotropin stimulation (short Synacthen test). Insufficiency was defined as a post-Synacthen cortisol increment < 200 nmol/l.
RESULTSOverall mortality was 33%. The incidence of adrenal insufficiency was 52% and children with adrenal insufficiency were significantly older and tended to have higher paediatric risk of mortality scores. They also required higher dose vasopressors for haemodynamic stability. In the survivor group, those with adrenal insufficiency needed a longer period of inotropic support than those with normal function (median, 3 v 2 days), but there was no significant difference in duration of ventilation (median, 4 days for each group) or length of stay (median, 5 v 4 days). Mortality was not significantly greater in children with adrenal insufficiency than in those with adequate adrenal function (6 of 17 v 5 of 16, respectively).
CONCLUSIONAdrenal insufficiency is common in children with septic shock. It is associated with an increased vasopressor requirement and duration of shock.

Keywords: adrenal insufficiency; cortisol; septic shock; mortality; vasopressors

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© 1999 by Archives of Disease in Childhood
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