High-Flow Nasal Cannula in Early Emergency Department Management of Acute Hypercapnic Respiratory Failure Due to Cardiogenic Pulmonary Edema.

BACKGROUND: Noninvasive ventilation (NIV) is the recommended ventilatory support for acute cardiogenic pulmonary edema (CPE) associated with acute respiratory failure or hypercapnia. High-flow nasal cannula (HFNC) has emerged as an alternative to NIV in acute hypoxemic respiratory failure. We aimed to assess the efficacy of HFNC on early changes in [Formula: see text] and respiratory parameters in patients in the emergency department with acute hypercapnic CPE and to compare it to NIV. METHODS: We conducted a prospective observational study in consecutive emergency department patients with acute hypercapnic CPE. Subjects received either HFNC or NIV, according to the attending emergency physician's expertise in HFNC. The primary outcome was change in [Formula: see text] after treatment for 1 h. Secondary outcomes were change in pH, breathing frequency, signs of work of breathing, and comparisons to NIV. RESULTS: Twenty-seven subjects with a discharge diagnosis of hypercapnic CPE were analyzed. Subjects had a median age of 87 y (interquartile range [IQR] 78-93); 37% were male. Twelve (44%) received HFNC, and 15 (56%) received NIV. Median of changes in [Formula: see text] from baseline to after 1 h of treatment were 7 mm Hg (IQR 4-11, P = .002) for HFNC and 3 mm Hg (IQR 1-8, P = .02) for NIV, with no between-group difference. pH, breathing frequency and signs of work of breathing also improved after both HFNC and NIV. CONCLUSIONS: This preliminary study suggests that HFNC treatment for 1 h improves [Formula: see text] and respiratory parameters in subjects with hypercapnic acute CPE in a manner that is comparable to NIV. Further studies are needed to assess HFNC as a possible alternative to NIV in early management of acute hypercapnic respiratory failure of cardiogenic origin. (ClinicalTrials.gov registration NCT03883555.).

Appropriateness of diagnosis and orientation of 996 consecutive patients admitted in an emergency department with flow-based organization.

BACKGROUND: Recent data, focused on the inability to transfer emergency patients to inpatient beds, has shown this to be the single most important factor contributing to overcrowding. Our Emergency Department (ED) was reorganized in the year 2000 based on the optimization of patients' flow. In this model, the emergency team had to refer patients to units fitting best to their condition with minimal delays. OBJECTIVES: To evaluate adequacy of both diagnosis between emergency room and hospitalization wards and patients' orientation in the context of an early discharge from the ED. METHODS: We collected data from 996 consecutive nontrauma patients for whom an admission was decided. Duration of stay in the ED and all related parameters were studied. Patients were categorized according to the adequacy of the diagnosis proposed at ED discharge as compared with the final diagnosis at hospital discharge. The patients' orientation appropriateness was also assessed. RESULTS: Despite a median duration of time of 6 h (21 min-54 h) diagnostics made by the emergency physicians and the patients' orientation were considered as adequate in most of the cases (66 and 96%, respectively). Fast track developed with medical intensive care and cardiology intensive care allowed referral of patients requiring these specific units within 2.2 h (27 min-17 h) and 2 h (41 min-8 h), respectively. The ED length of stay was highly influenced by the admission location and by the patient's age. CONCLUSION: A short time of stay in the ED is compatible with both a good diagnosis and a good orientation of ED patients requiring admission for specialized care.