Triggers and heart rate at the onset of the 257 verified ambulatory ischaemic episodes (136 silent) with a matching diary entry
| Trigger | All ischaemic episodes (n=257) | Silent episodes (n=136) | Anginal episodes (n=121) | ||||||
|---|---|---|---|---|---|---|---|---|---|
| n | % Total | HR at onset | n | % Total | n | % Total | |||
| Physical stress only | 143 | 56 | 91 (17)1-150 | 64 | 47 | 79 | 65‡ | ||
| Mental stress only | 13 | 5 | 85 (12) | 9 | 7 | 4 | 3 | ||
| Both physical stress and mental stress | 20 | 8 | 104 (13)† | 2 | 1 | 18 | 15‡ | ||
| Nil trigger | 81 | 31 | 82 (18) | 61 | 45 | 20 | 17‡ | ||
↵1-150 p < 0.05 v nil trigger; †p < 0.05v all other triggers; ‡p < 0.01 anginal episodesv silent episodes.
HR at onset, mean (SD) of heart rate at onset of ischaemia; Nil trigger, no trigger identified by patient.