Adverse events during adenosine infusion and iloprost inhalation
| Adenosine | Iloprost | |
| Subjects n | 74 | 74 |
| Patients with adverse events | 35 (47.3) | 2 (2.7) |
| Increased cough | 0 | 1 (1.4) |
| Hypotension | 3 (4.1) | 1 (1.4) |
| Flushing | 2 (2.7) | 0 |
| Palpitations or shortness of breath | 27 (36.5) | 0 |
| Abdominal pain | 2 (2.7) | 0 |
| Pharyngeal pain | 1 (1.4) | 0 |
| Other observed adverse events | 0 | 0 |
Data are presented as n (%), unless otherwise stated.