interpreting spirometry: patient or data? david robiony-rogers crfs service leader respiratory...
TRANSCRIPT
![Page 1: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/1.jpg)
Interpreting Spirometry:Patient or Data?
David Robiony-Rogers CRFS
Service Leader Respiratory MedicineCapital & Coast District Health Board
![Page 2: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/2.jpg)
![Page 3: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/3.jpg)
The colours of disease
![Page 4: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/4.jpg)
The colours of respiratory disease
![Page 5: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/5.jpg)
For the movie conscious...
![Page 6: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/6.jpg)
For the spacer conscious...
![Page 7: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/7.jpg)
Medication type colour coding...
![Page 8: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/8.jpg)
Spirometry
Spirometry is the timed measurement of dynamic lung volumes during forced expiration and inspiration, and is used to quantify how effectively and how quickly the lungs can be emptied.
![Page 9: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/9.jpg)
Spirometry: Graphic Displays
Volume time curve Flow volume loop
![Page 10: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/10.jpg)
Spirometry Test
![Page 11: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/11.jpg)
Spirometry Interpretation
Acceptability
* minimum of 3 acceptable manoeuvres* good start and satisfactory effort* no artefacts induced by coughing or glottic
closure in 1st second, or equipment problems* minimum of 6 seconds exhalation and/or plateau
in the volume time curve* Maximal inspiration prior to blow
![Page 12: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/12.jpg)
Artefacts
a) No artefactb) Cough within 1st second of forced exhalationc) Incomplete exhalation/early termination (glottic
closure)d) Slow start/submaximal forced effort at start of blowe) Hesitant start
![Page 13: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/13.jpg)
SpirogramsNormal and problematic
![Page 14: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/14.jpg)
Flow Volume LoopsNormal and problematic
![Page 15: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/15.jpg)
Reproducibility
Reproducibility
* two largest FVC within 0.150 L (150ml) of each other
* two largest FEV1 within 0.150 L (150ml) of each other
* must meet criteria for acceptability
If the reproducibility criteria is not met after a total of 8 tests, stop testing.
![Page 16: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/16.jpg)
Disease Patterns
Obstructive patternA disproportionate reduction of maximal airflow from the lung in relation to the maximal volume
Restrictive patternCharacterised by a normal FEV1/VC ratio and reduction in FVC below the 5th percentile of the predicted
Mixed patternCharacterised by the coexistence of obstruction and restriction, and is defined physiologically when both FEV1/FVC and FVC are below 5th percentiles of the predicted value
![Page 17: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/17.jpg)
Spirometric overlap between Asthma and COPD
* COPD has been described as a disease characterized by fixed airflow obstruction because in many patients FEV1 values improve little after bronchodilator challenge.
* Current guidelines on diagnosis and management describe COPD as a condition that is partially reversible because some patients exhibit substantial improvements in FEV1 (despite an FEV1-FVC ratio that remains below 0.70) that compares in magnitude to what is observed in some asthma patients.
* Tashkin et al (2008) have shown that about 54% of a large COPD cohort (N = 5756) exhibited an improvement in FEV1 values > 12% and 200 mL, while about 65% of patients had FEV1 increases > 15%.
* This substantial overlap in FEV1 reversibility between asthma and COPD underscores an important limitation of using this measurement to distinguish between asthma and COPD.
Can Fam Physician. Oct 2011; 57(10): 1148–1152.
![Page 18: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/18.jpg)
The overlap of Asthma and COPD
![Page 19: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/19.jpg)
Disease Patterns
The presence and site of disease have various effects on the volume-time and maximal expiratory flow volume
curveVitalograph Ltd 1986 &2000
![Page 20: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/20.jpg)
Normal Ventilatory Function
The pattern of the lung and spirogram show a pattern of normality
Vitalograph Ltd 1986 &2000
![Page 21: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/21.jpg)
Age: 22, Gender: Female; Height: 166 cm, Weight: 69.3 kg;
BMI: 25.15
Spirometry measure
Best Reference Ref ± CI
FVC, L 3.63 3.95 3.2 – 4.7
FEV1, L 3.02 3.43 2.8 – 4.0
FEV1/FVC, % 83 76.3 – 95.9
![Page 22: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/22.jpg)
Age: 23; Gender: Male; Height: 175 cm; Weight: 67.6 kg; BMI: 22.07
Spirometry measure
Best Reference Ref ± CI
FVC, L 5.49 5.39 4.5 – 6.3
FEV1, L 4.29 4.48 3.7 – 5.2
FEV1/FVC, % 78 73.6 – 93.0
![Page 23: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/23.jpg)
Reversible Obstruction
The lungs and spirogram show a pattern of airway obstruction (black), with the spirogram showing a marked improvement after the administration of a
bronchodilator (red) Vitalograph Ltd 1986 &2000
![Page 24: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/24.jpg)
Age: 75; Gender: Male; Height: 175 cm; Weight: 97.2 kg; BMI: 31.74
Spirometry measure
Best Reference Ref ± CI
FVC, L 3.28 4.09 3.2 – 5.0
FEV1, L 2.07 2.97 2.2 – 3.7
FEV1/FVC, % 63 63.1 – 82.5
![Page 25: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/25.jpg)
Age: 29; Gender: Female; Height: 162 cm; Weight: 98.6 kg; BMI: 37.57
Spirometry measure
Pre bronchodilator
best
Post bronchodilator
best% improvement Reference Ref ± CI
FVC, L 2.22 3.51 58 3.75 3.1 – 4.4
FEV1, L 1.49 2.68 80 3.18 2.6 – 3.8
FEV1/FVC, % 67 76 74.9 – 94.4
![Page 26: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/26.jpg)
Irreversible Obstruction
The lungs and spirogram show a pattern of airflow obstruction, with the spirogram showing little or no
improvement after the administration of a bronchodilatorVitalograph Ltd 1986 &2000
![Page 27: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/27.jpg)
Age: 74; Gender: Female; Height: 161 cm; Weight: 70.9 kg; BMI: 27.35
Spirometry measure
Pre bronchodilator
best
Post bronchodilator
best% improvement Reference Ref ± CI
FVC, L 1.46 1.72 18 2.78 2.1 – 3.5
FEV1, L 0.57 0.53 -7 2.08 1.5 – 2.7
FEV1/FVC, % 39 31 65.3 – 84.9
FEV6, L 1.42 1.51 6 2.64 2.0 – 3.3
![Page 28: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/28.jpg)
Restrictive Defect
The lung and spirogram show a pattern of volume restriction
Vitalograph Ltd 1986 &2000
![Page 29: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/29.jpg)
Age: 74; Gender: Male; Height: 160 cm; Weight: 82.3 kg; BMI: 32.15
Spirometry measure
Best Reference Ref ± CI
FVC, L 2.01 3.15 2.4 – 3.9
FEV1, L 1.53 2.26 1.6 – 2.9
FEV1/FVC, % 76 63.1 – 82.5
![Page 30: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/30.jpg)
Combined Pattern
The lungs and spirogram show a pattern of combined airflow obstruction and volume restriction
Vitalograph Ltd 1986 &2000
![Page 31: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/31.jpg)
Spirometry measure
Best Reference Ref ± CI
FVC, L 2.83 4.02 3.2 – 4.9
FEV1, L 0.94 2.96 2.2 – 3.7
FEV1/FVC, % 33 64.1 – 83.5
Age: 69; Gender: Male; Height: 171 cm; Weight: 50.9 kg; BMI: 17.41
![Page 32: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/32.jpg)
Age: 35; Gender: Male; Height: 168 cm; Weight: 90.6 kg; BMI: 32.10
Spirometry measure
Best Reference Ref ± CI
FVC, L 2.52 4.76 3.9 – 5.6
FEV1, L 1.69 3.87 3.2 – 4.6
FEV1/FVC, % 67 71.2 – 90.5
![Page 33: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/33.jpg)
Response to ß2-agonist
ß2-agonist bronchodilator
* Dose: 4 puffs of ß2-agonist delivered through a spacer device
* Wait 15-20 minutes before repeating spirometry* Significant response defined as >12% and more
than 200mL increase in either the FEV1 or FVC.
![Page 34: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/34.jpg)
Spirometry: Pre & Post ß2-agonist
![Page 35: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/35.jpg)
Severity classification
Degree of severity FEV1 % predicted
Mild >70
Moderate 60-69
Moderately severe 50-59
Severe 35-49
Very severe <35
Severity of any spirometric abnormality based on the forced expiratory volume in one second (FEV1)
ATS/ERS Task Force: Standardisation of lung function testing. Interpretative strategies for lung function tests. Eur Respir J 2005; 26: 948
![Page 36: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/36.jpg)
Interpretation algorithm
National Asthma Council Australia: www.nationalasthma.org.au
Yes
Yes No
No
![Page 37: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/37.jpg)
Spirometry interpretation algorithm: Primary Care Respiratory Alliance of Canada
Asthma vs COPD (history)
Consistent with asthma
Consistent with asthma
Refer to specialist
FEV1, 12% and 200mL
FEV1, 12% and 200mL
FEV1, 12% and 200mL
Restrictive disorder
Reduced < LLN Normal (not COPD) FVC ≥ 80% predicted FEV1 and FVC
ß2-agonist ß2-agonist
Reduced < LLN Normal > LLN
Pre ß2-agonist FEV1/FVC ratio
Modified from Primary Health Care Alliance of Canada spirometry interpretation
algorithm 2011
![Page 38: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/38.jpg)
Visual Interpretation
![Page 39: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/39.jpg)
Age: 58; Gender: Female; Height: 156 cm; Weight: 61.1 kg; BMI: 25.11
Spirometry measure
Best Reference Ref ± CI
FVC, L 1.47 2.08 1.4 – 2.7
FEV1, L 0.99 1.52 1.0 – 2.1
FEV1/FVC, % 67 63.0 – 82.5
![Page 40: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/40.jpg)
Age: 68; Gender: Female; Height: 170 cm; Weight: 70.0 kg; BMI: 24.22
Spirometry measure
Best Reference Ref ± CI
FVC, L 2.90 3.43 2.7 – 4.2
FEV1, L 2.04 2.61 2.0 – 3.3
FEV1/FVC, % 70 66.6 – 86.2
![Page 41: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/41.jpg)
Age: 35; Gender: Male; Height: 168 cm; Weight: 90.6 kg; BMI: 32.10
Spirometry measure
Best Reference Ref ± CI
FVC, L 2.52 4.76 3.9 – 5.6
FEV1, L 1.69 3.87 3.2 – 4.6
FEV1/FVC, % 67 71.2 – 90.5
![Page 42: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/42.jpg)
Age: 50; Gender: Female; Height: 164 cm; Weight: 109.2 kg; BMI: 40.60
Spirometry measure
Best Reference Ref ± CI
FVC, L 3.16 3.61 2.9 – 4.3
FEV1, L 2.35 2.86 2.3 – 3.5
FEV1/FVC, % 74 70.4 – 90.0
![Page 43: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/43.jpg)
Age: 64; Gender: Male; Height: 162 cm; Weight: 60.5 kg; BMI: 23.05
Spirometry measure
Best Reference Ref ± CI
FVC, L 3.34 3.64 2.9 – 4.4
FEV1, L 2.58 2.72 2.1 – 3.4
FEV1/FVC, % 77 65.2 – 84.5
![Page 44: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/44.jpg)
Age: 70; Gender: Female; Height: 153 cm; Weight: 127.9 kg; BMI: 54.64
Spirometry measure
Best Reference Ref ± CI
FVC, L 1.91 2.55 1.9 – 3.2
FEV1, L 1.59 1.92 1.4 – 2.4
FEV1/FVC, % 83 66.1 – 85.7
![Page 45: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/45.jpg)
Age: 70; Gender: Female; Height: 144 cm; Weight: 81.8 kg; BMI: 39.45
Spirometry measure
Best Reference Ref ± CI
FVC, L 2.05 2.15 1.6 – 2.7
FEV1, L 1.75 1.61 1.2 – 2.1
FEV1/FVC, % 85 66.1 – 85.7
![Page 46: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/46.jpg)
Age: 52; Gender: Female; Height: 161 cm; Weight: 50.8 kg; BMI: 19.60
Spirometry measure
Best Reference Ref ± CI
FVC, L 3.84 3.42 2.7 – 4.1
FEV1, L 2.72 2.70 2.1 – 3.3
FEV1/FVC, % 71 70.0 – 89.6
![Page 47: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/47.jpg)
Age: 39; Gender: Female; Height: 157 cm; Weight: 100.1 kg; BMI: 40.61
Spirometry measure
Best Reference Ref ± CI
FVC, L 3.09 3.44 2.8 – 4.1
FEV1, L 1.75 2.83 2.3 – 3.4
FEV1/FVC, % 56 72.7 – 92.3
![Page 48: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/48.jpg)
Age: 67; Gender: Female; Height: 157 cm; Weight: 67.7 kg; BMI: 27.47
Spirometry measure
Best Reference Ref ± CI
FVC, L 2.67 2.83 2.2 – 3.5
FEV1, L 1.80 2.15 1.6 – 2.7
FEV1/FVC, % 67 66.8 – 86.4
![Page 49: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/49.jpg)
https://www.youtube.com/watch?v=yNDKD_xI684
Spirometry Education
Pulmonary Function Tests (PFT): Lesson 2 - SpirometryPublished on Feb 3, 2014A discussion of FEV1, FVC, FEV1/FVC ratio, and the flow volume loop, including how these are used in the diagnosis of various lung diseases, with a particular focus on the distinction between obstructive and restrictive lung disease. A summary of flow volume loop patterns in upper airway obstruction is covered as well.
![Page 50: Interpreting Spirometry: Patient or Data? David Robiony-Rogers CRFS Service Leader Respiratory Medicine Capital & Coast District Health Board](https://reader035.vdocuments.site/reader035/viewer/2022062312/551bfb5f5503469e4f8b4945/html5/thumbnails/50.jpg)