Table 1 Patient characteristics
No suppl. oxygen (n=57) | Low-flow oxygen (n=70) | High flow oxygen (n=23) | P value | |
|---|---|---|---|---|
Age | 65.3±15.6 | 73.6±13.3 | 65.5±16.5 | 0.003 |
Males | 26 (46%) | 25 (36%) | 4 (17%) | 0.06 |
Symptom onset to ED time | ||||
Less than 3 hrs | 17 (30%) | 30 (43%) | 11 (48%) | |
More than 3 hrs | 25 (44%) | 17 (24%) | 2 (9%) | 0.02 |
Unknown | 15 (26%) | 23 (33%) | 10 (43%) | |
Initial GCS score | ||||
0-8 | 1 (2%) | 6 (9%) | 8 (35%) | |
9-15 | 53 (93%) | 57 (81%) | 12 (52%) | <0.001 |
Missing | 3 (5%) | 7 (10%) | 3 (13%) | |
Inpatient admission | 44 (77%) | 67 (96%) | 22 (96%) | 0.002 |
Intubation | 0 (0%) | 0 (0%) | 17 (74%) | <0.001 |
Discharge destination | ||||
Home | 25 (44%) | 24 (34%) | 3 (13%) | |
Rehab/Dead | 22 (39%) | 33 (47%) | 15 (65%) | 0.13 |
Unknown | 10 (18%) | 13 (19%) | 5 (22%) | |
Final Diagnosis | ||||
AIS or TIA | 22 (39%) | 35 (50%) | 3 (13%) | |
Hemorrhagic stroke | 2 (4%) | 6 (9%) | 8 (35%) | |
HIE or Seizures | 4 (7%) | 4 (6%) | 8 (35%) | <0.001 |
Toxic/metabolic | 18 (32%) | 17 (24%) | 3 (13%) | |
Miscellaneous | 11 (19%) | 8 (11%) | 1 (4%) | |
Adverse Events* | ||||
None | 43 (75%) | 46 (66%) | 10 (44%) | |
Present | 6 (11%) | 13 (19%) | 8 (35%) | 0.07 |
Unknown | 8 (14%) | 11 (16%) | 5 (22%) | |
Specific Adverse Events | ||||
Mortality | 2 (4%) | 5 (7%) | 4 (17%) | 0.2 |
Seizures | 2 (4%) | 4 (6%) | 1 (4%) | 0.9 |
New neurological deficit | 4 (7%) | 6 (9%) | 2 (9%) | 0.9 |
New infarction | 1 (2%) | 1 (1%) | 1 (4%) | 0.8 |
Post-ischemic hemorrhage | 2 (4%) | 6 (9%) | 1 (4%) | 0.7 |