| The investigators performed electrocardiograms on the volunteers before taking the drug or placebo and again after 1, 3, and 5 hours. |
| Monitoring electrocardiograms is useful in many in-hospital clinical situations a well as in everyday activities. |
| Contemporary physicians can use highly refined technologies, such as stethoscopes, electrocardiograms, and encephalograms, to detect minimal life signs. |
| However, changes may be subtle and primary care physicians' lack of skill in interpreting electrocardiograms may mean that referral for specialist opinion is still required. |
| Examination by a cardiologist included electrocardiograms and ballistocardiograms. |
| General clinicians and junior paediatricians may have little experience of interpreting paediatric electrocardiograms. |
