Downloaded 150 times
Uploaded byniveen wakeel
Mantoux test
The Mantoux test, also known as the tuberculin skin test, is an intradermal test used to determine if a person has developed an immune response to the tuberculosis bacterium. It involves injecting a small amount of purified protein derivative (PPD) tuberculin under the skin on the lower forearm. The injection site is examined 48-72 hours later and any induration of 5mm or more is considered a positive result, indicating exposure to tuberculosis. A positive test does not distinguish between latent TB infection and active disease. The test may produce false positive results due to BCG vaccination or exposure to non-tuberculous mycobacteria, and false negative results can occur due to immunosup
More Related Content
Mantoux test
- 1. MANTOUX SCREENING TEST (Tbskin test ) PBL 12 Directed By Dr. Niveen El-Wakeel
- 3. What is mantouxtest? Pirquet test PPD test Tuberculin sensitivity test
- 6. An intradermal testdue to hypersensitivity to PPD that indicates past or present infection with tubercle bacilli.
- 7.
- 9. Procedure: Inject 0.1 ml of5 tuberculin units I.D, usually on the forearm. The patient's arm is examined 48-72 hours after the tuberculin is injected. The reaction is an induration (swelling) around the site of the injection.
- 10. The diameter ofthe indurated area is measured
- 11. Diameter of the indurationis 10 mm or greater Positive test 10 mm
- 12. Diameter of the indurationis 10 mm or less Negative test 5 mm
- 13. It is impossibleto distinguish between active disease & past infection by a positive tuberculin test.
- 14. prior exposure or infectionwith other mycobacteria or vaccination with BCG False +ve test
- 15. impaired CMI response False-ve test
- 16. Why It IsDone People in close contact with someone known to have TB. Health care workers who are likely to be exposed to TB. People with TB symptoms, such as an ongoing cough, night sweats, and unexplained weight loss. People who have had an abnormal chest X-ray. People who have had a recent organ transplant or have an impaired immune system, such as those with human immunodeficiency virus (HIV).
- 17. A tuberculin skintest should not be done for people: With a known TB infection. Who have had a previous severe reaction to the TB antigens. Who have a skin rash that would make it hard to read the skin test
- 18. Side effects: Tachycardia Chest tightening,breathing difficulty Fever Dizziness Unusual tiredness or weakness Skin rash
- 20. Quiz 1) Whatis the result if the it is 10 or more mm induration ? A. People with no risk factor of Tb B. With HIV infection C. Children younger than 4 years old D. Have close contact of people with infectious Tb
- 21. 2) Whatis meant by false positive reaction ? A. May not react to the test even though they are infected with M. tuberculosis B. May not react to the test even though they are not infected with M. tuberculosis C. May react to the test even though they are not infected with M. tuberculosis D. May react to the test even though they are infected with M. tuberculosis Quiz
- 22. 3) Whatis meant by false negative reaction ? A. May react to the test even though they are infected with M. tuberculosis B. May not react to the test even though they are not infected with M. tuberculosis C. May react to the test even though they are not infected with M. tuberculosis D. May not react to the test even though they are infected with M. tuberculosis Quiz
- 24. Hager Dorgham Cheima Medjahed DoaaSabri Jalila Ahmed Fatin Aqilah Norazak Nasuha Bukhari Ahmed Katary Karim Rashad Khairul Hazwan Hazwan Akmal Taher Rizk Mohamed Mosaad Yousuf Hamed
Editor's Notes
- #17 A tuberculin skin test is done to find people who have tuberculosis (TB), including: