Table 2 Univariate analysis of continuous data using the Mann-Whitney test.
From: Systemic air embolism during percutaneous core needle biopsy of the lung: frequency and risk factors
| Â | Patients with air embolism | Patients without air embolism | Â | Â | ||||
|---|---|---|---|---|---|---|---|---|
| Â | Mean | Median | SD | Mean | Median | SD | Unit of measurement | Significance WMT |
Level of the lesion above the left atrium | 57 | 63,3 | 33.2 | 29.1 | 33.7 | 38.9 | mm | 0.0008 (s) |
Needle angle to the tumor surface | 65.7 | 68.4 | 17.2 | 72.1 | 75.1 | 15.7 | Angular degree | 0.0638 (ns) |
Collimation during the biopsy (smart step) | 2.2 | 2.5 | 0.8 | 2.4 | 2.5 | 0.5 | mm | 0.0318 (s) |
Number of biopsies | 8.9 | 8 | 3.0 | 7.7 | 7 | 3.3 | number | 0.0356 (s) |
Absolute Distance from the apex of the lung to the lesion | 137.4 | 151 | 65.5 | 110.9 | 104.3 | 75.2 | mm | 0.0397 (s) |
Number of specimens | 6.8 | 7 | 2.1 | 6.1 | 6 | 2.7 | number | 0.0569 (ns) |
Relative distance from the apex of the lung to the lesion | 50.6 | 58.8 | 22.6 | 42.6 | 39.1 | 24.7 | % | 0.0606 (ns) |
PT | 108.1 | 109 | 13.5 | 102.9 | 103 | 13.0 | % | 0.1136 (ns) |
Duration of biopsy | 49.3 | 29.9 | 60.0 | 25.9 | 22 | 14.5 | minutes | 0.2461 (ns) |
Patients age | 56.4 | 62.2 | 18.0 | 61.8 | 63.7 | 13.4 | years | 0.2521 (ns) |
Rectangular distance from the plane of the most posterior point of the lung to the tumor (absolute) | 71.6 | 62.6 | 41.0 | 79.5 | 74.5 | 41.4 | mm | 02854 (ns) |
Distance between pleura and tumor in the needle trajectory | 19.8 | 20.5 | 13.2 | 24.5 | 21.2 | 19.4 | mm | 0.3322 (ns) |
Vertical distance between the lesion and the tabletop | 156.5 | 161 | 45.2 | 150.4 | 145 | 60.2 | mm | 03499 (ns) |
Rectangular distance from the plane of the most posterior point of the lung to the tumor (relative) | 37.5 | 34.2 | 23.0 | 40.6 | 38.2 | 22.0 | % | 0.3599 (ns) |
Platelet count | 229.3 | 234 | 86.1 | 254.2 | 243 | 88.9 | Number/ml | 0.4030 (ns) |
Needle deepness in tumor | 10.5 | 7.1 | 12.2 | 7.7 | 5.3 | 9.1 | mm | 0.4589 (ns) |
Degree of movement of the patients | 1.4 | 1 | 0.6 | 1.6 | 1 | 0.8 | Ordinal scale (1-4) | 0.4849 (ns) |
FEV1 | 2.4 | 2.4 | 0.8 | 2.3 | 2.1 | 0.9 | liter | 0.4974 (ns) |
Diameter (WHO) | 22.7 | 18.1 | 13.1 | 22.5 | 17 | 16.2 | mm | 0.5597 (ns) |
Density of the lung | -848.1 | -859 | 43.9 | -843.2 | -849 | 50.2 | Hounsfield units | 0.5602 (ns) |
Axial diameter of the lesion (RECIST) | 32.7 | 28 | 23.2 | 30.0 | 22.4 | 23 | mm | 0.5820 (ns) |
Volume of the lesion | 30.6 | 6.3 | 50.9 | 30.9 | 5.8 | 81.9 | ml | 0.6188 (ns) |
PTT | 29.7 | 28.5 | 4.6 | 29.9 | 29 | 4.3 | seconds | 0.6736 (ns) |
Rectangular distance from the plane of the most lateral point of the lung to the tumor (relative) | 53.1 | 50.6 | 17.7 | 52.1 | 52.0 | 19.5 | % | 0.8185 (ns) |
Diameter of a visible bleeding in lung (RECIST) | 17.5 | 15.5 | 13.1 | 19.4 | 16.4 | 20.1 | mm | 0.8908 (ns) |
Rectangular distance from the plane of the most lateral point of the lung to the tumor (absolute) | 74,9 | 72 | 25.9 | 73.6 | 73.8 | 28.1 | mm | 0.9235 (ns) |
Biopsy length | 16.3 | 15 | 3.4 | 16.7 | 15 | 3.3 | mm | 0.9266 (ns) |