"Pulmonary function test"의 두 판 사이의 차이
| 13번째 줄: | 13번째 줄: | ||
*BDR(bronchodilator responsiveness) | *BDR(bronchodilator responsiveness) | ||
| + | **BDR = [(Post-bronchodilator FEV1 - Pre-bronchodilator FEV1) / Predicted FEV1] x 100% | ||
| + | **Interpreting BDR | ||
| + | ***Based on the change in percent predicted FEV1, BDR can be categorized into five levels: | ||
| + | ****Negative BDR: ≤0% | ||
| + | ****Minimal BDR: 0-2% | ||
| + | ****Mild BDR: 2-4% | ||
| + | ****Moderate BDR: 4-8% | ||
| + | ****Marked BDR: >8% | ||
2024년 6월 12일 (수) 16:02 기준 최신판
폐기능 검사(Pulmonary function test, PFT)
- TLC=IC(inspiratory capacity)+FRC(funtional residual capacity)=VC+RV=ERV+TV(tidal volume)+IRV+RV
- Restrictive pattern: FVC<80%, FVC가 작을수록 심함, TLC, VC, RV 모두 감소
- parenchymal restrictive pattern: RV 감소
- 질환: IPF, sarcoidosis
- extraparenchymal restrictive pattern with limitation in inspiration and expiration: RV 증가
- 질환: Neuromuscular disease, chest wall 이상
- parenchymal restrictive pattern: RV 감소
- Obstructive pattern: FEV1/FVC<70%, FEV1이 작을수록 심함
- 질환: 천식, COPD, 기관지 확장증, Bronchiolitis
- Extrathoracic obstruction은 흡기시, Intrathoracic obstruction은 호기시 장애
- BDR(bronchodilator responsiveness)
- BDR = [(Post-bronchodilator FEV1 - Pre-bronchodilator FEV1) / Predicted FEV1] x 100%
- Interpreting BDR
- Based on the change in percent predicted FEV1, BDR can be categorized into five levels:
- Negative BDR: ≤0%
- Minimal BDR: 0-2%
- Mild BDR: 2-4%
- Moderate BDR: 4-8%
- Marked BDR: >8%
- Based on the change in percent predicted FEV1, BDR can be categorized into five levels: