Table 1.
Demographic and study characteristics in the operation time and blood loss of the included studies.
| Author | Technique | Subgroups | Age | Sex | Operation time | Blood loss | Operation time & blood loss correlation |
|---|---|---|---|---|---|---|---|
| Year | Samples | Mean (years) | F (female) | Mean (minute) | Mean (mL) | ||
| Country of origin | Range (years) | M (male) | Range (minute) | Range (mL) | |||
| Kuroyanagi et al. | SSRO | n = 50 | 28 | F: 32 | 105 | 55 | Significant |
| 2013 | 17-44 | M: 18 | 80-200 | 15-300 | |||
| Japan | |||||||
| Shirota et al. | SSRO | Piezoelectricity (n = 30) Traditional SSRO (n = 29) |
28 ± 9 | F: 35 | 174 ± 37 | 189 ± 113 | Significant |
| 2014 | 16-49 | M: 24 | 107-255 | 18-584 | |||
| Japan | |||||||
| Chen et al. | IVRO | n = 80 | F: 23.31 ± 4.06 | F: 49 | F: 229.39 ± 40.82 | F: 86.12 ± 54.98 | F: no significant |
| 2015 | M: 22.42 ± 3.73 | M: 31 | M: 249.52 ± 48.86 | M: 104.03 ± 56.73 | M: significant | ||
| Taiwan | |||||||
| Handa et al. | SSRO | Propofol-fentanyl (n = 65) Propofol-remifentanil (n = 66) |
26.9 ± 8.1 | F: 45 | 112 ± 29.5 | 171.7 ± 130.2 | NA |
| 2016 | M: 20 | ||||||
| Japan | 25.8 ± 8.4 | F: 47 | 115.8 ± 16.4 | 118.4 ± 69.6 | NA | ||
| M: 19 | |||||||
| Salma et al. | SSRO | n = 30 | 145.8 ± 43.8 | 167.67 ± 59.79 | NA | ||
| 2017 | 120-300 | 100-300 | |||||
| Saudi Arabia | |||||||
| Pedersen et al. | IVRO | n = 131 | 23.5 | F: 71 | 61 | 82 | No significant |
| 2021 | 18-73 | M: 62 | 31-144 | ||||
| Norway |
n: number of samples; NA: not available.