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Criteria for failure of spontaneous breathing trial
| Anxiety |
| Diaphoresis |
| Greater than 20 to 25 percent increase in heart rate and/or blood pressure |
| Increased use of accessory muscles and dyspnea |
| Respiratory rate > 35 breaths/minute |
| SpO2 < 90 percent or greater than 5 percent decrease from baseline |
SpO2, oxygen saturation.
