RESUMO
Understanding the immune response to Middle East respiratory syndrome coronavirus (MERS-CoV) is crucial for disease prevention and vaccine development. We studied the antibody responses in 48 human MERS-CoV infection survivors who had variable disease severity in Saudi Arabia. MERS-CoV-specific neutralizing antibodies were detected for 6 years postinfection.
Assuntos
Infecções por Coronavirus , Coronavírus da Síndrome Respiratória do Oriente Médio , Animais , Formação de Anticorpos , Camelus , Infecções por Coronavirus/epidemiologia , Humanos , Arábia Saudita/epidemiologiaRESUMO
OBJECTIVES/BACKGROUND: Extracorporeal membrane oxygenation is used as rescue therapy for patients with acute respiratory distress syndrome in whom conventional therapy has failed prior to an Extra Corporeal Membrane Oxygenator to rescue Lung Injury in Severe Acute Respiratory Distress Syndrome trial. Since then, extracorporeal membrane oxygenation has been incorporated as part of the standard treatment algorithm in many centers for patients with severe acute respiratory distress syndrome. Since the emergence of coronavirus disease 2019 in early 2020, extracorporeal membrane oxygenation has been used effectively as rescue therapy and as a bridge to recovery in some patients with refractory respiratory failure. DESIGN SUBJECT AND INTERVENTION: We present a 38-year-old male healthcare worker diagnosed with coronavirus disease 2019 and progressed to critical condition with severe surgical emphysema on a high-flow nasal cannula with Fio2 100%, a flow of 40 L/min, and a maximum oxygen saturation of 88%. He was successfully treated by applying awake extracorporeal membrane oxygenation, without a need for invasive mechanical ventilation, to avoid worsening barotrauma and hemodynamic compromise potentially induced by positive pressure ventilation. MAIN RESULTS AND CONCLUSIONS: To our knowledge, this is one of the first cases to be reported in the literature on the use of awake extracorporeal membrane oxygenation as a "treatment" for barotrauma due to severe acute respiratory distress syndrome in a coronavirus disease 2019 patient, without the need for invasive mechanical ventilation. In selected patients with severe respiratory failure, awake extracorporeal membrane oxygenation can be used as a salvage treatment and obviate the need for invasive mechanical ventilation.
RESUMO
Extracorporeal membrane oxygenation (ECMO) is considered as a supportive treatment that provides circulatory and ventilatory support and can be thought off as a bridge to organ recovery. Since 2009, it has been applied as a rescue treatment for patients with severe adult respiratory distress syndrome (ARDS) mainly due to viral causes. In December 2019, several patients presented with a constellation of symptoms of viral pneumonia in China. A new strain of the corona virus family, called COVID-19, has been discovered to be the cause of this severe mysterious illness that was named severe acute respiratory syndrome coronavirus 2 (SARSCoV2). This new virus continued to spread across the globe leading to the World Health Organization announcing it as a pandemic in the early 2020. By the end of March 2021, the number of COVID-19 cases worldwide exceeded 126 million cases. In Saudi Arabia, the first confirmed case of COVID-19 was reported in the 2nd March 2020. By the end of March 2021, the total number of confirmed COVID-19 cases in Saudi Arabia is just above 360,000. In anticipation of the need of ECMO for the treatment of patients with SARSCoV2 based on the previous Middle East respiratory syndrome coronavirus pandemic experience, the Saudi Extra-Corporeal Life Support (ECLS) chapter that is under the umbrella of the Saudi Critical Care Society (SCCS) convened a working group of ECMO experts. The mission of this group was to formulate a guidance for the use of ECMO as a last resort for patients with severe ARDS, especially with COVID-19 based on available evidence. The ECLS-SCCS chapter wanted to generate a document that can be used to simple guide, with a focus on safety, to provide ECMO service for patients with severe ARDS with a special focus on SARSCoV2.
Assuntos
COVID-19/terapia , Oxigenação por Membrana Extracorpórea/métodos , Pneumonia Viral/terapia , Pneumonia Viral/virologia , Síndrome do Desconforto Respiratório/terapia , Adulto , Animais , COVID-19/virologia , Humanos , SARS-CoV-2/isolamento & purificação , Arábia SauditaRESUMO
Immunocompromised patients who have a severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection pose many clinical and public health challenges. We describe the case of a hematopoietic stem cell transplantation patient with lymphoma who had a protracted illness requiring three consecutive hospital admissions. Whole genome sequencing confirmed two different SARS-CoV-2 clades. Clinical management issues and the unanswered questions arising from this case are discussed.
Assuntos
COVID-19 , Transplante de Células-Tronco Hematopoéticas , Humanos , Reinfecção , SARS-CoV-2 , Eliminação de Partículas ViraisRESUMO
BACKGROUND: Immunocompromised patients with coronavirus disease 2019 (COVID-19) have prolonged infectious viral shedding for more than 20 days. A test-based approach is suggested for de-isolation of these patients. METHODS: The strategy was evaluated by comparing severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) viral load (cycle threshold (Ct) values) and viral culture at the time of hospital discharge in a series of 13 COVID-19 patients: six immunocompetent and seven immunocompromised (five solid organ transplant patients, one lymphoma patient, and one hepatocellular carcinoma patient). RESULTS: Three of the 13 (23%) patients had positive viral cultures: one patient with lymphoma (on day 16) and two immunocompetent patients (on day 7 and day 11). Eighty percent of the patients had negative viral cultures and had a mean Ct value of 20.5. None of the solid organ transplant recipients had positive viral cultures. CONCLUSIONS: The mean Ct value for negative viral cultures was 20.5 in this case series of immunocompromised patients. Unlike those with hematological malignancies, none of the solid organ transplant patients had positive viral cultures. Adopting the test-based approach for all immunocompromised patients may lead to prolonged quarantine. Large-scale studies in disease-specific populations are needed to determine whether a test-based approach versus a symptom-based approach or a combination is applicable for the de-isolation of various immunocompromised patients.