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Spirometry (Pulmonary Function Test)
What is Spirometry?
Spirometry is a pulmonary function test used to measure the volume of air inhaled and exhaled from the lungs. The test is performed using a device called a Spirometer. It helps detect abnormalities in lung function, often before noticeable symptoms develop.
Indications for Spirometry
1. For Diagnosis
Spirometry is recommended for individuals experiencing symptoms such as:
- Chronic cough
- Shortness of breath
- Wheezing
The test helps identify the underlying causes of these respiratory symptoms.
2. For Disease Assessment
Spirometry is used to evaluate the severity and progression of respiratory diseases.
3. For Disease Surveillance
The test is recommended for individuals at increased risk of lung disease, including:
- Smokers
- Mine workers
- Workers exposed to metals or chemical substances
- Individuals working in dusty environments
- Textile industry workers
- Workers exposed to silica dust
- Stone crushing, quarrying, and blasting workers
- Cement industry workers
Preparation Before the Test
- Avoid strenuous exercise for at least 30 minutes before the examination.
- Wear loose-fitting clothing that does not restrict the chest or abdomen.
- Avoid heavy meals for at least 2 hours before the test.
- Patients with asthma may be advised to stop certain bronchodilator medications as directed by their physician.
- Refrain from smoking for at least 2 hours before the examination.
Spirometry Testing Procedure
- Sit or stand comfortably in an upright position.
- A nose clip will be applied to prevent air leakage through the nose.
- Take a deep breath in until the lungs are completely full.
- Place the mouthpiece firmly in the mouth and seal the lips tightly around it.
- Exhale as forcefully and as quickly as possible until no more air can be expelled from the lungs. The exhalation should last at least 6 seconds.
Common Problems During Spirometry Testing
Several factors may affect the accuracy of the test results, including:
- Incomplete or weak exhalation.
- Air leakage around the mouthpiece.
- Failure to inhale or exhale completely.
- Delayed initiation of exhalation, resulting in insufficient effort.
- Coughing during the maneuver, especially within the first second of exhalation.
Contact Information
Kasemrad Wellness Center
Kasemrad Hospital Prachachuen
Operating Hours
- Monday – Friday
- 09:00 AM – 04:00 PM
Telephone
- +66 (0) 2-910-1600 ext. 1440, 1441
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Spirometry (Pulmonary Function Test) | Kasemrad Hospital Prachachuen
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Spirometry is a pulmonary function test that measures lung capacity and airflow. It is used to diagnose respiratory conditions, assess disease severity, and monitor lung health.
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Pulmonary Function Test (Spirometry) at Kasemrad Hospital Prachachuen
Kasemrad Hospital Prachachuen provides comprehensive Pulmonary Function Testing (Spirometry) services to evaluate lung performance and respiratory health. This examination is an important diagnostic tool that helps physicians assess how well the lungs function by measuring the amount and speed of air inhaled and exhaled.
Spirometry is commonly recommended for the following purposes:
- Diagnosis of respiratory diseases in patients experiencing symptoms such as chronic cough, shortness of breath, wheezing, or difficulty breathing.
- Assessment of disease severity and monitoring of treatment effectiveness in patients with known respiratory conditions.
- Prevention and surveillance of lung diseases, particularly among individuals with risk factors such as smoking, occupational dust exposure, or exposure to chemicals and pollutants.
Preparation Before the Examination
To ensure accurate test results, patients are advised to:
- Avoid strenuous exercise for at least 30 minutes before the test.
- Wear loose and comfortable clothing that does not restrict breathing.
- Avoid heavy meals for at least 2 hours prior to the examination.
- Follow the physician’s instructions regarding the use of inhalers or bronchodilator medications before the test.
- Refrain from smoking for at least 2 hours before the examination.
Spirometry Testing Procedure
The examination is simple, non-invasive, and usually takes only a few minutes. The procedure includes:
- Sitting or standing comfortably in an upright position.
- Wearing a nose clip to prevent air leakage through the nose.
- Taking a deep breath in until the lungs are completely filled with air.
- Sealing the lips tightly around the mouthpiece.
- Exhaling as forcefully and as quickly as possible until the lungs are completely emptied.
The test may be repeated several times to ensure the accuracy and consistency of the results.
Common Problems That May Affect Test Accuracy
Certain factors may lead to incomplete or inaccurate test results, including:
- Failure to exhale forcefully or completely.
- Air leakage around the mouthpiece.
- Incomplete inhalation or exhalation.
- Delayed initiation of exhalation.
- Coughing during the test, particularly during the first second of exhalation.
Following the instructions provided by healthcare professionals is essential for obtaining reliable and accurate results.
By understanding the purpose of the examination, proper preparation, and the testing procedure, patients can be better prepared for a successful pulmonary function test and receive the most accurate assessment of their respiratory health.
Contact Information
For more information or to schedule an appointment, please contact:
Health Check-Up Center, 9th Floor
Kasemrad Hospital Prachachuen
Tel: 0-2910-1600 ext. 1440, 1441
