Table 3

Number of compressions recorded by the LVR counter, at three different sampling rate conditions, in a healthy volunteer

Sampling rate (Hz)CompressionsAccuracy
Manual countLVR counterTotal compressionsTotal repetitions
4Set 12 : 3 : 42 : 3 : 427/27 (100%)9/9 (100%)
Set 22 : 3 : 42 : 3 : 4
Set 32 : 3 : 42 : 3 : 4
2Set 12 : 3 : 42 : 3 : 425/27 (93%)9/9 (100%)
Set 22 : 3 : 42 : 3 : 4
Set 32 : 3 : 42 : 2 : 3
1Set 12 : 3 : 42 : 2 : 416/27 (59%)9/9 (100%)
Set 22 : 3 : 41 : 2 : 2
Set 32 : 3 : 41 : 1 : 1

  • Where x : y : z represents the number of compressions per repetition within each set.

  • Shaded cells indicate discrepancy between delivered compressions and LVR counter recordings.

  • Hz, hertz; LVR, lung volume recruitment.