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. 2023 Jan 20;38(5):1160–1166. doi: 10.1007/s11606-022-07949-9

Table 2.

High-Flow Nasal Cannula Oxygen Therapy Care Processes

Care process N=124
HFNC total days (GIM + ICU), median (IQR) 5 (3 to 8)
HFNC days on GIM, median (IQR) 3 (2 to 6)
Symptom onset to HFNC in days, median (IQR) 10 (7 to 12)
Location of HFNC initiation
  GIM ward 102 (82.3%)
  ICU 2 (1.6%)
  ED to GIM 9 (7.3%)
  ED to ICU 9 (7.3%)
  Other 2 (1.6%)
Max FiO2 administered via HFNC on GIM, median (IQR) 80 (60 to 95)
  <50% 7 (5.7%)
  50–59% 17 (13.7%)
  60–69% 21 (16.9%)
  70–79% 15 (12.1%)
  80–89% 17 (13.7%)
  ≥90% 47 (37.9%)
Max flow (L/min) via HFNC on GIM, median (IQR) 60 (55 to 60)
  40 L/min 2 (1.6%)
  45 L/min 5 (4.0%)
  50 L/min 16 (12.9%)
  55 L/min 19 (15.3%)
  60 L/min 82 (66.1%)
Total number of respiratory therapy assessments per patient, median (IQR) 12 (6 to 21)
Respiratory assessments per patient day on GIM ward, median (IQR)* 3.5 (2.9 to 4.3)
Critical care outreach team activation† 91 (73.4%)

*Calculated by dividing the total number of respiratory therapy assessments per patient by the total number of days the patient was on HFNC oxygen therapy on the GIM ward

†This reflects the number of patients that the critical care outreach team was activated for

HFNC, high-flow nasal cannula oxygen therapy; GIM, general internal medicine; ICU, intensive care unit; IQR, interquartile range; ED, emergency department; FiO2, fraction of inspired oxygen