Criterion | Center A | Center B | Center C | Reason |
---|---|---|---|---|
Smoker? | no | no | no | Reduces chances of post op smoking; indicates patient's commitment to recovery |
FEV-1 of predicted1 | 20-30% | less than 35% | 15-35% | There is a FEV-1 window of patients suited for LVRS who are neither too ill nor too healthy. |
PCO22 | less than 55 mm | (relative) | less than 50 mm | Too much CO2air exchange is poor; post op may require ventilator |
Steriods | no | NA | NA | Use of steriods may slow healing process after surgery |
Pre operative Rehabilitation | yes | yes | yes | Increases strength, stamina, endurance motivation; improves post op healing. |
Age | less than 75 years | less than 75 years | less than 75 years | Post op complications (such as pneumonia and blood clots) may arise in older patients whose endurance and stamina is weak. |