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Induced sputum is considered in a situation where a person is unable to provide sputum sample in sufficient quantity for Tuberculosis (TB) diagnostic test. This situation is more evident in children.

  • Sputum induction is usually done using 3% nebulized hypertonic saline.
  • The patient is pretreated with nebulized bronchodilators like salbutamol prior to induction.
  • Following saline nebulization, chest physiotherapy is done to loosen up the secretion and the samples are collected from the throat or nasopharynx using a collector attached to a suction at one end and a catheter/ tube to the other.
  • The suction catheter provokes cough and the secretions brought up are collected via suction.

 

Sputum Induction has to be carried out only in a clinical setting under the close supervision of a trained medical practitioner.

 

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