Comparison of high-flow nasal therapy, noninvasive ventilation, and continuous positive airway pressure on outcomes in critically ill patients admitted for COVID-19 with acute respiratory failure.

BACKGROUND: The optimal first-line noninvasive respiratory support (NIRS) to improve outcome in patients affected by COVID-19 pneumonia admitted to ICU is still debated. METHODS: We conducted a retrospective study in seven French ICUs, including all adults admitted between July and December 2020 with documented SARS-CoV-2 acute respiratory failure (PaO2/FiO2<300 mmHg), and treated with either high-flow nasal therapy (HFNT) alone, noninvasive ventilation alone or in combination with HFNT (NIV), or continuous positive airway pressure alone or in combination with HFNT (CPAP). The primary outcome was NIRS failure at day 28, defined as the need for endotracheal intubation (ETI) or death without ETI. RESULTS: Among the 355 patients included, 160 (45%) were treated with HFNT alone, 115 (32%) with NIV and 80 (23%) with CPAP. The primary outcome occurred in 65 (41%), 69 (60%), and 25 (31%) patients among those treated with HFNT alone, NIV, and CPAP, respectively (P<0.001). After univariate analysis, patients treated with CPAP had a trend for a lower incidence of the primary outcome, whereas patients treated with NIV had a significant higher incidence of the primary outcome, both compared to those treated with HFNT alone (unadjusted Hazard ratio 0.67; 95% CI [0.42-1.06], and 1.58; 95% CI [1.12-2.22]; P=0.09 and 0.008, respectively). CONCLUSIONS: Among ICU patients admitted for severe COVID-19 pneumonia and managed with NIRS, the outcome seems to differ according to the initial chosen strategy. Prospective randomized controlled studies are warranted to identify the optimal strategy.

Consecutive Severe Orofacial Complications in Intensive Care Unit Patients: Quincke's Disease and Macroglossia due to Prolonged Prone Positioning for Management of Acute Respiratory Distress Syndrome.

Critically ill patients admitted into the intensive care units are susceptible to a wide array of complications that can be life-threatening, or lead to long-term complications. Some complications are inherent to the patient's condition and others are related to therapeutics or care procedure. The prolonged prone positioning and mechanical ventilation devices are the first risk factors for orofacial complications. We report the case of a 47-year-old male patient, with a history of sleep apnoea syndrome, morbid obesity (body mass index of 43 kg/m2), and gastroesophageal reflux disease, presented to the emergency department with recent otorhinolaryngological symptoms of dysphonia and exertional dyspnoea lasting two days, and complicated with Quincke's disease. First-line treatment consisted of a compilation of intravenous antihistamines and corticosteroids. The patient's condition worsened. He developed an acute respiratory distress syndrome secondary to ventilator-acquired pneumonia with prone positioning ventilation, complicated by severe macroglossia. Soaked gauze dressings were placed around his tongue. Progressively, the size of his tongue reduced. LEARNING POINTS: Intensive care unit (ICU) patients are susceptible to a wide array of life-threatening complications that can be linked.Oral severe acquired Quincke's disease is an isolated form of angioneurotic oedema that is induced by several factors including gastroesophageal reflux disease, sleep apnoea, inhalation exposure, or drug reactions. Macroglossia is rare life-threatening complication due to prolonged prone positioning of unknown pathogenesis. An experienced critical care staff with standardised protocol is needed to prevent such a complication.Because of possible consecutive severe orofacial complications, prolonged prone positioning for management of acute respiratory distress syndrome (ARDS) is not recommended in patients with inaugural oral angioedema.

Case Report: Adult Post-COVID-19 Multisystem Inflammatory Syndrome and Thrombotic Microangiopathy.

BACKGROUND: The coronavirus disease 2019 (COVID-19) pandemic has affected millions of people worldwide. A clinical series of Kawasaki-like multisystem inflammatory syndrome (MIS), occurring after SARS-CoV-2 infection, have been described in children (MIS-C) and adults (MIS-A), but the pathophysiology remains unknown. CASE PRESENTATION: We describe a case of post-COVID-19 MIS-A in a 46-year-old man with biopsy-proven renal thrombotic microangiopathy (TMA). Specific complement inhibition with eculizumab was initiated promptly and led to a dramatic improvement of renal function. CONCLUSION: Our case suggests that that TMA could play a central role in the pathophysiology of post-COVID-19 MIS-A, making complement blockers an interesting therapeutic option.