Safety of transport and retrieval of patients on extracorporeal membrane oxygenation during the peak of COVID-19 pandemic in the State of Qatar

Background: Transport and retrieval of patients on extracorporeal membrane oxygenation (ECMO) support can be hazardous with complications reported for up to 27% of patients1. Transport of COVID-19 patients on ECMO requires appropriate training, resource allocation, meticulous planning, effective communication and co-ordination. Strict adherence to infection control procedures and appropriate use of personal protective equipment is recommended2. The Extracorporeal Life Support Organisation registry reports 43% in-hospital mortality of COVID-19 patients supported on ECMO. This includes in-house and retrieval ECMO cases3. Methods: Between March 1st and September 30th 2020, 32 confirmed COVID-19 positive patients underwent peripheral cannulation followed by transportation to the Medical Intensive Care Unit (MICU) at Hamad General Hospital. Mobile ECMO is complex and time consuming. Following arrival at the bedside and thorough clinical assessment, the ECMO consultantmay decline, recommend optimisation of the care provided, or opt for cannulation and initiation of ECMO. Cannulation can be performed at the bedside or in the operating room. Following stabilisation, the patient is transferred for computed tomography imaging and then transported byambulance to hospital (Figure 1). Finally, another transfer fromhospital entrance to the MICU takes place. All these phases pose risks for errors and complications unless vigilance, teamwork and continuous effective monitoring and co-ordination is observed. Patients were evaluated for age and severity of illness (Table 1). In addition, all major transport-related adverse events were reported and analysed. Major transport events are cardiac arrest, ECMO emergencies (membrane or mechanical failure, air embolism, accidental decannulation, or significant cannula dislodgement), significant arrhythmia, severe bleeding or cardio-respiratory instability, and vehicle breakdown/malfunction. Findings: The majority of our patients were critically ill with high probability of mortality as depicted by SOFA and APACHE2 score. 29 out of 32 patients were male. None of our patients suffered major complications during transportation. Conclusion: This small case series demonstrates transport and retrieval on ECMO for COVID-19 positive patients can be safely undertaken provided appropriate expertise, protocols and resources are used.

Safety of healthcare workers undertaking transport and retrieval of patients on extracorporeal membrane oxygenation during the peak of COVID-19 pandemic in the State of Qatar

Background: Transport and retrieval of patients on extracorporeal membrane oxygenation (ECMO) support can be hazardous to patients and healthcare workers (HCWs)1. COVID-19 is highly contagious and can be transmitted by contact, droplet, or airborne route. Transport of COVID-19 patients exposes HCWs and the public to infection risks, hence strict measures must be in place to ensure everyone’s safety2. ECMO cannulation and transportation is considered an aerosol generating procedure and can pose significant risks to HCWs3. In addition, close contact with the patient in the confined space of the ambulance may put HCWs at increased risk of exposure and infection. Methods: Between March 1st and September 30th 2020, a total of 32 episodes of COVID-19 ECMO transport were undertaken by the Medical Intensive Care Unit (MICU) and Ambulance Service. We reviewed the incidence of COVID-19 infection among HCWs involved in these missions. The transport clinical team is composed of ECMO consultant, two ECMO nurses, a perfusionist and a Critical Care Paramedic (CCP). Due to staff shortage and clinical needs, a respiratory therapist did not attend to the majority of cases. A crew of two paramedics supports the clinical team with their intensive care ambulance. Results: The number of clinical staff involved in the COVID-19 ECMO transport during that period is shown in Table 1. The duration of clinical staff’s exposure to the infected patient in the back of the ambulance is demonstrated in Table 2. MICU staff underwent COVID-19 serology tests every 2 weeks as per local policy. None of the clinical staff involved in these transfers and retrievals of COVID-19 positive patients tested positive after 2 weeks of transport. Conclusion: Strict infection prevention and personal protective measures are mandatory to avoid cross-infection and were carefully adhered to during all the missions. They translated into the well-being of the clinical staff involved in the transfer and retrievals of COVID-19 positive patients.