Scottish Intensive Care Society Audit Group report on COVID-19
As at 10 May 2021

About this release

This release by Public Health Scotland is the seventh report on data from the Scottish Intensive Care Society Audit Group (SICSAG) relating to patients admitted to intensive care units (ICUs) and high dependency units (HDUs) across Scotland with COVID-19. This report differs from data published on 08 July 2020 and earlier relating to patients admitted to Scottish ICUs with COVID-19 disease, as it only includes those patients whose laboratory test was positive in the 21 days before critical care admission or during the critical care stay. In this report wave 1 is defined as 1 March 2020 to 31 July 2020 and wave 2 is defined as starting from 1 August 2020.

Main points

During the period 1 March 2020 to 9 May 2021

• 1,837 patients with laboratory confirmed COVID-19 disease admitted to intensive care units (ICUs) in Scotland. Of these, 1,326 patients have been admitted to ICUs during wave 2.

Number of ICU admissions with COVID-19

• In wave 2 a higher proportion of patients were managed with non-invasive ventilation on admission to ICU (17% in wave 1 compared with 53% in wave 2) with a corresponding reduction in the use of advanced respiratory support (66% in wave 1, 37% in wave 2).
• There were 35 patients admitted to ICUs who had received the first dose of the COVID-19 vaccine and who had a positive laboratory test for COVID-19 disease 14 days or more after vaccination. After review of the clinical case notes, 26 (74%) of admissions were classified as being related to COVID-19.
• Mortality measured at 30-days after ICU admission was similar in the two waves (39% in wave 1, 37% in wave 2).
• There were 1,282 patients with laboratory confirmed COVID-19 disease admitted to HDUs. Of these, 1,061 were admitted in wave 2. In wave 2, 30-day mortality was lower in HDU patients compared with ICU patients (28% compared with 37%).

Background

The Scottish Intensive Care Society Audit Group (SICSAG) is the national adult critical care audit and quality assurance programme. It benefits from a close collaboration between the Scottish Intensive Care Society and Public Health Scotland. The audit has complete, national coverage of all admissions to intensive care units (ICUs) and combined critical care units in Scotland.

Since the start of the COVID-19 outbreak, SICSAG has transformed its systems to provide daily data to inform the response to the pandemic across Scotland. The full report describes the admission frequency, demographics, activity and outcomes for patients with laboratory confirmed COVID-19 disease admitted to Scottish units. It includes admissions to adult ICUs, combined intensive care/high dependency units, and areas of hospitals which have been repurposed to provide intensive care. In this report, the term 'ICU' refers to these three types of facility. It also includes admissions to standalone adult high dependency units (HDUs), as well as areas of hospitals which have been repurposed to provide high dependency care. However, not all repurposed HDUs were able to contribute data to the audit. The report does not include admissions to paediatric/neonatal ICUs and HDUs.

This seventh report compares characteristics and outcomes for admissions between the first and second waves of the pandemic.

Further information

Further information is available from the SICSAG website (external website) and from the full report available at the top of this page.

The next release of this publication will be on an ad hoc basis.