Potential for overuse of corticosteroids and vasopressin in septic shock
© BioMed Central Ltd 2012
Published: 6 September 2012
Guidelines recommend corticosteroids and vasopressin to treat septic shock as per specific indications . However, the results from trials evaluating both drugs conflict. For corticosteroids, the 2002 Annane and colleagues study showed a survival benefit for hydro-cortisone/fludrocortisone treatment in patients with an inappropriate cortisol response to a high-dose adrenocorticotropic hormone (ACTH) test , while the Corticosteroid Therapy of Septic Shock (CORTICUS) trial found no difference in survival by patients' response to ACTH . The Vasopressin and Septic Shock Trial (VASST) demonstrated a survival benefit in less severe septic shock, but guidelines espouse use 'in patients refractory to other vasopressors' [1, 4]. Clinical variability, leading to overtreatment, may have negative effects on survival. To evaluate the impact of these evidence limitations, we surveyed physicians in the Critical Illness Outcomes Study (CIOS).
We developed a 15-item, self-administered survey to characterize physician practice patterns for use of corticosteroids and vasopressin in septic shock. The survey, conducted anonymously and with implied consent, was distributed to 92 members of the CIOS listserv. Recipients were encouraged to solicit survey completion by their colleagues. CIOS is a multicenter study among 68 ICUs designed to determine whether ICU-based organizational and structural factors are associated with patient-related outcomes. The survey fulfilled Stanford Institutional Review Board exemption guidelines. To address when clinicians would use corticosteroids, we asked participants to rate their agreement (five-point Likert scale) for the following situations: blood pressure poorly responsive to fluid resuscitation and vasopressor therapy; an inappropriate response to ACTH testing ; and a history of treatment with corticosteroids within the prior 6 months. Likert responses were evaluated by Pearson correlation coefficients. For vasopressin, we asked whether physicians preferentially used vasopressin in more or less severe septic shock, as defined by the VASST .
Substantial variability exists in use of corticosteroids and vasopressin in septic shock. Although agreement exists regarding the use of corticosteroids for refractory hypotension, other indications demonstrated poor to modest guideline concordance. Nearly one-third of respondents considered failure to respond to an ACTH test as an appropriate indication for corticosteroid use, despite negative results from the CORTICUS trial and variability of current cortisol assays [3, 5]. Overtreatment with corticosteroids could increase incidence of secondary infections . Vasopressin use contradicted the conclusions from the VASST . As septic shock mortality remains high, work is needed to reduce variability through research and adherence to evidence from clinical trials [2–4].
Critical Illness Outcomes Study
Corticosteroid Therapy of Septic Shock
tumor necrosis factor
Vasopressin and Septic Shock Trial.
The authors thank the members of the CIOS for taking the time to complete the practice pattern survey. They would also like to acknowledge Dr Gomathi Krishnan and the Stanford University Center for Clinical Informatics for their assistance with the creation and distribution of the survey.
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