Obstructive Lung Disease Flow Volume Loop - Medical Algorithm

Are you evaluating a patient's breath flow-volume loop?

Yes

Is the height of the expiratory phase depressed, with a decreased peak expiratory flow rate (PEFR)?

Yes

Does the descending segment of the expiratory curve show a curvilinear shape ('scooping')?

Yes

Does the expiratory flow reach zero before the start of the next inspiration?

Yes

Does the loop return to normal after initiating appropriate therapy?

Yes

Results

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Results Interpretation and Description References Next Steps

Data complete?

Evaluation appropriate?

Is there evidence of obstructive airway disease?

Is there evidence of air trapping during expiration?

Is there evidence of permanent damage to the airways or another process?

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Interpretation and Description

References

Next Steps in Evaluation

Diagnosis

Clinical Diagnosis, Including Family History For Genetics
Other Testing
Criteria For Diagnosis
- Assessing Obstructive and Restrictive Patterns
Severity, Prognosis, Stage
Complications

Therapy

Administration
- Bronchodilator Response

Patient Concerns

Informed Consent
- "Lung Age" of Morris et al

Evaluation

Results

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Interpretation and Description

References

Next Steps in Evaluation

Diagnosis

Therapy

Patient Concerns

Specialty

Objective

ICD-10

Changes in the Breath Flow-Volume (F-V) Loop in a Patient with Obstructive Lung Disease

Purpose: To evaluate a breath flow-volume (F-V) loop for evidence of obstructive lung disease.

Evaluation

Results

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Interpretation and Description

References

Next Steps in Evaluation

Diagnosis

Therapy

Patient Concerns

Specialty

Objective

ICD-10