Table 2. In-flight medical emergencies according to medical problem and outcomes.
| Categories | All events (n=199), n (%) | Flight outcomes | Case-fatality ratea, n/N (%) | |
| Aircraft diversion (n=136), n (%) | Scheduled destination (n=63), n (%) | |||
| Cardiac symptoms | 25 (12.6) | 23 (16.9) | 2 (3) | 1/25 (4) |
| Seizures | 29 (14.6) | 20 (14.7) | 9 (14) | 0/29 (0) |
| Syncope or presyncope | 19 (9.6) | 13 (9.5) | 6 (10) | 1/19 (5) |
| Abdominal pain | 10 (5) | 6 (4.4) | 4 (6) | 0/10 (0) |
| Respiratory symptoms | 14 (7) | 8 (5.9) | 6 (10) | 1/14 (7) |
| Cardiopulmonary arrest | 18 (9.1) | 7 (5.1) | 11 (18) | 16/18 (89) |
| Hysteria | 11 (5.5) | 8 (5.9) | 3 (5) | 0/11 (0) |
| Nausea or vomiting | 9 (4.5) | 6 (4.4) | 3 (5) | 2/9 (22) |
| Agitation or psychiatric symptoms | 2 (1) | 1 (0.7) | 1 (2) | 0/2 (0) |
| Other neurologic symptoms | 6 (3) | 5 (3.7) | 1 (2) | 2/6 (33) |
| Infectious disease | 4 (2) | 3 (2.2) | 1 (2) | 0/4 (0) |
| Hypotension | 4 (2) | 0 (0) | 4 (6) | 0/4 (0) |
| Hypoglycemia | 8 (4) | 6 (4.4) | 2 (3) | 1/8 (12) |
| Allergic reaction | 8 (4) | 4 (2.9) | 4 (6) | 0/8 (0) |
| Obstetrical or gynecologic symptoms | 2 (1) | 2 (1.5) | 0 (0) | 0/2 (0) |
| Other | 16 (7.4) | 10 (7.3) | 6 (10) | 0/16 (0) |
| Unspecified | 14 (7) | 14 (10.3) | 0 (0) | 0/14 (0) |
a
There were 24 deaths across all 199 in-flight medical emergencies.