Table 1. Characteristics comparison of patients in both groups .
| Variables | Technique | P value | |
| Fixed Volume Technique | Pilot Balloon Palpation Technique | ||
| Age (y) | 63.11±21.65 | 66.42±18.66 | 0.27 |
| Weight (kg) | 69.15±14.11 | 69.53±17.09 | 0.88 |
| Height (cm) | 163.55±2.71 | 162.94±2.0 | 0.85 |
| Heart Rate (beat per min) | 85.01±27.98 | 86.22±29.0 | 0.76 |
| Respiratory rate (per min) | 13.91±3.23 | 13.70±3.38 | 0.68 |
| SBP (mm Hg) | 96.29±16.58 | 92.77±12.72 | 0.11 |
| DBP (mm Hg) | 58.91±11.99 | 56.87±8.97 | 0.17 |
| BT (°C) | 37.12±0.74 | 37.05±0.76 | 0.53 |
SBP: systolic blood pressure, DBP: diastolic blood pressure, BT: body temperature.