9. Henry Ford was a frugal man and would never install anything on a tractor that was not essential to its operation. The fuel shut-off valve on the sediment bowl (right) is there for a reason â shut the gas off when you turn off the ignition key every time!
Sensitivity and sensitivity threshold. The electrodes do not only pace, they also sense the electrical activity at the myocardial surface. One can define the sensitivity of a pacemaker electrode as the minimum myocardial voltage required to be detected as a P wave or R wave, measured in mV. The sensitivity of the pacemaker is actually a setting on the box, where the lower the number, the more sensitive the pacemaker.
Sensitivity refers to the test's ability to correctly detect patients who do have the condition. In the example of a medical test used to identify a disease, the sensitivity of the test is the proportion of people who test positive for the disease among those who have the disease.