The pulse waveform on the report in MESIresults will look different.

If the measurement is performed with the device connected to the computer and the MESIresults software running, the pulse waveforms are recorded during the entire duration of the measurement. Using MESIresults, the users can zoom in to see the details of the waveform.

If the measurement is performed while the device is not connected to the computer and the results are transferred to the computer later, the device will only record 5 to 6 seconds of the pulse wave, which can be inspected on the device or in MESIresults.

Both use cases are correct, however using the device connected to the computer provides a bit more information, as it records the full pulse waveform.

  • halved lemon shape


  • a flattened shape, oscillations with low amplitudes


  • no typical shape, oscillations almost invisible (noise)


  • full lemon shape, clearly visible oscillations with high amplitudes


When the oscillations on the graphs do not appear in full “lemon” shape, but halved, it implies that the (leg) cuffs did not inflate sufficiently (showing errors E8 and E10). It can result in systolic and diastolic pressures not being reliably measured.

Combination of these kinds of graphs in the legs and a normal graph in the arm, usually appear when:

  • the patient is not in a completely supine position
  • the cuffs on the legs are not sufficiently tightened
  • the leg pressures are significantly higher than the arm pressure (note that the device takes the arm pressure into consideration when defining the maximum pressure during the inflation)

We suggest you check the patient’s and cuffs’ position again and then repeat the measurement.