ICU Vivas · Advanced respiratory support
Data viva — a spontaneous breathing trial dataset
A data viva on the SBT interpretation — the respiratory rate, the heart rate, the RSBI and the gas, and the decision to extubate or to return to the ventilator.
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Target exams
CICMFFICMEDIC
Prompt
A dataset from a ventilated patient before and during a spontaneous breathing trial — to be interpreted and the weaning decision made.
Stimulus
You are shown the dataset of a ventilated patient (on day 5 of ventilation for a pneumonia) before and during a 30-minute SBT on 5 cmH2O pressure support:
| Variable | Before SBT | During SBT (30 min) |
|---|---|---|
| Respiratory rate | 18 | 32 |
| Tidal volume (mL) | 400 | 280 |
| Heart rate | 88 | 115 |
| Saturation | 97% | 91% |
| RSBI (f/VT) | -- | 114 |
Interpret and decide.[2]
References2ShowHide
- [1]Esteban A, Frutos F, Tobin MJ, et al. A comparison of four methods of weaning patients from mechanical ventilation. New England Journal of Medicine, 1995.PMID 7823995
- [2]Bersten AD, Soni N (eds) Oh's Intensive Care Manual. 8th edition, Elsevier, 2018.