Predicting failure of non invasive ventilation (NIV) and High flow nasal cannula (HFNC) in patients with acute hypoxemic hypocapnic respiratory failure (AHHRF): the usefulness of the standardised PaO2/FiO2 ratio (P/F-st)

Author(s):  
Giacomo Ghinassi ◽  
Antonietta Bandinu ◽  
Uberto Maccari ◽  
Giuseppina Ciarleglio ◽  
Chiara Madioni ◽  
...  
2020 ◽  
pp. 088506662096804
Author(s):  
David C. Miller ◽  
Jie Pu ◽  
David Kukafka ◽  
Christian Bime

Background: Despite the increasing use of high flow nasal cannula oxygenation systems (HFNC) in clinical practice, little is known about its role in all cause respiratory failure as compared to traditional non-invasive ventilation (BiPAP). Furthermore, the effect of HFNC on mortality is unknown. Methods: We conducted a retrospective analysis of 49,853 patients with respiratory failure treated with non-invasive respiratory support (HFNC or BiPAP) and/or invasive mechanical ventilation (IMV) between 2017 and 2018. Results: Patients initially treated with HFNC who underwent subsequent intubation and IMV had a higher mortality rate as compared to patients who were initially treated with BiPAP and underwent subsequent intubation and IMV (34.8% vs 26.3%, p < 0.0001, OR 1.49, 95% CI 1.26,1.76). Patients first treated with HFNC who underwent subsequent intubation and IMV had a significantly increased mortality compared to patients who underwent immediate intubation and IMV (34.8% vs. 21.5%, p ≤ 0.0001, OR 1.94, 95% CI 1.67, 2.27). Stratified based on ICD-10 diagnosis, patients with a diagnosis of COPD exacerbation or heart failure treated with HFNC and subsequent intubation and IMV had higher mortality as compared to those treated with immediate IMV alone. This trend did not hold true for patients with a diagnosis of pneumonia. Conclusion: In a real-world retrospective analysis, use of HFNC was associated with increased mortality as compared to BiPAP and IMV alone. Further study is needed to confirm these associations.


2020 ◽  
Vol 90 (2) ◽  
Author(s):  
Vasileios Karamouzos ◽  
Fotini Fligou ◽  
Charalambos Gogos ◽  
Dimitrios Velissaris

The novel corona virus (SARS-CoV-2) continuous to spread around the globe causing high mortality, tremendous stress on healthcare systems and an unprecedented disruption of everyday life with unpredictable socioeconomic ramifications. The diseaseis typically affecting the respiratory system and some patients will develop refractory hypoxemic respiratory insufficiency requiring mechanical ventilation. The role of non-invasive ventilation (NIV), high flow nasal cannula (HFNC) or continuous positive airway pressure devices (C-PAP) in the treatment of the 2019 corona virus disease (COVID-19) is not yet clear. We hereby report a case of a 44-year-old COVID-19 positive male patient suffering from hypoxic respiratory failure that was successfully treated with high flow nasal cannula oxygen therapy in a negative pressure intensive care room. Although specific criteria for the use of high flow nasal canula devices COVID-19 are not available at this time, clinicians could use this non-invasive modality as analternative method of respiratory support in selected patients presenting with respiratory failure.


Thorax ◽  
2020 ◽  
Vol 75 (11) ◽  
pp. 998-1000 ◽  
Author(s):  
Andrea Vianello ◽  
Giovanna Arcaro ◽  
Beatrice Molena ◽  
Cristian Turato ◽  
Andi Sukthi ◽  
...  

This observational study aims to assess the outcome and safety of O2-therapy by high-flow nasal cannula (HFNC) in 28 consecutive patients with severe hypoxemic acute respiratory failure (hARF) consequent to SARS-CoV-2 infection, unresponsive to conventional O2-therapy. Nineteen patients had a positive response. Nine patients required escalation of treatment to non-invasive ventilation (five subsequently intubated). None of the staff had a positive swab testing during the study period and the following 14 days. Severity of hypoxemia and C reactive protein level were correlated with HFNC failure. These data suggest HFNC to be a safe treatment for less severe patients with SARS-CoV-2 hARF and efficacy will need to be assessed as part of a clinical trial.


JMS SKIMS ◽  
2020 ◽  
Vol 23 (3) ◽  
Author(s):  
Tajamul Hussain Shah ◽  
Suhail Mantoo ◽  
Rafi Ahmad Jan

High Flow Nasal Cannula Oxygenation The current pandemic of COVID-19 caused by novel severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) tested the healthcare infrastructure throughout the globe at all possible levels. Early reports suggest about 20% of patients infected with SARS-CoV-2 require hospitalization and 5-8% require admission to intensive care unit (ICU) due to severe disease.Supplementation of oxygen provided by various conventional oxygen therapy (COT) devices (like nasal prongs, face mask, venture mask or non-rebreather mask) may not be sufficient in cases of worsening respiratory failure. One form of escalating respiratory support in such patients is a high flow nasal oxygenation device. High flow nasal cannula oxygenation (HFNC) is a form of non invasive respiratory support. It acts as a bridge between low flow devices and non invasive ventilation and may reduce the need for intubation.


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