Causes of spurious hypertension
| Cause of hypertension | No of incidents |
|---|---|
| In all cases the error was detected by the use of a sphygmomanometer to auscultate the blood pressure. | |
| Calibration drift of invasive device | 2 |
| Sphygmomanometer cuff herniation | 1 |
| Calibration error of non-invasive device | 1 |
| Total | 4 |