This is an interim national report by the National Office of Clinical Audit (NOCA) Irish National Intensive Care Unit Audit Governance Committee for 2019. It presents comprehensive data on Intensive Care Unit (ICU) admissions to Units participating in the Irish National Intensive Care Unit Audit (INICUA). These were 22 Units in 18 hospitals, encompassing 88% of all ICU activity in adult hospitals funded by the Health Service Executive (HSE).