HAEMATOLOGY/ONCOLOGY ICU OUTCOMES AT THE CANBERRA HOSPITAL: A RETROSPECTIVE COHORT STUDY

Background: Outcomes for hematology/oncology patients have improved, however determining their suitability for ICU admission remains challenging and controversial. Aim: Examine outcomes of patients admitted to an Australian tertiary hospital Intensive Care Unit (ICU) and explore potential prognostic factors. Methods: A retrospective review of patients with hematological and solid tumour malignancies no electively admitted to The Canberra Hospital (TCH) ICU, between January 2008 and December 2012. Patient demographics, cancer details, reasons for ICU admission and APACHE II scores were collected and survival rates calculated and correlated with potential prognostic factors. Results: Of 205 patients, 113 (55%) had hematological malignancies, and 92 (45%) solid tumours; 58% male, and mean age 60.3 years (SD 13.4). 82% of solid tumour patients had metastatic disease and 55% received palliative chemotherapy. Primary reasons for ICU admission included sepsis (59%), respiratory distress (37%) and hypotension/shock (18%). Mean APACHE II score was 20.1(SD 0.55); mean length of stay in ICU, 4 days (SD 5.2); ICU survival was 76% with 62% and 41% alive at 30-days and 6 months respectively. Overall 1 year survival was 36%. High APACHE II scores and ≥2 organs failing were significant risk factors for 30-day mortality. Conclusion: Short-term outcomes were similar to contemporary studies from a general tertiary hospital setting and better than historical data. 62% of patients were alive 30 days post-ICU admission, with a significant minority alive at 12 months, confirming some patients achieved worthwhile outcomes. Further research is needed to ensure appropriate patient selection and to explore quality of life post ICU.