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Spirometry Measurements

VC:

Relaxed Vital Capacity

FVC:

Forced Vital Capacity

FEV1:

Forced Expiratory Volume in 1 second

PEF:

Peak Expiratory Flow

FEV1%:

FEV1 as a percentage of FVC (FEV1/FVC) x 100

F50:

PEF at 50% of FVC

F25:

PEF at 75% of FVC

MEF:

Mid-Expiratory Flow Rate

I50:

PIF at 50% of FVC

R50:

(F50 / I50 ) x 100

PIF:

Peak Inspiratory Flow

FET:

Forced Expiratory Time

MVV ind:

Indirect measurement of minute ventilation

FIVC:

Forced Inspiratory Vital Capacity

%Predicted:

Percentage of Predicted Value (Base / Pred ) x 100

%Change:

Percentage difference of Base and Post BD blow (Post - Base) / Base x 100

COPD:

COPD or Chronic Obstructive Pulmonary Disease (also referred to COLD - Chronic Obstructive Lung Disease or CORD - Chronic Obstructive Respiratory Disease) is the collective name for diseases of the lungs and respiratory systems that are Obstructive as opposed to restrictive like asthma. It is charcterized by the presence of airflow obstruction due to chronic bronchitis or emphysema. The obstruction to the airflow usually happens progressively and this is the reson why the patient needs to be monitored from early on. By far the major risk of getting COPD is cigarrette smoking.