•  Bronchitis Treatment
•  Lower/ Upper Respiratory Tract Infection Treatment
•  Halitosis Treatment
•  Bronchial Thermoplasty
•  Transbronchoscopic Cryo Biopsy of the Lungs
•  Endobronchial Ultrasound

• Member: Indian Chest Society
• Member: National College of Chest Physicians
• Member: National Academy of Allergy
• Member: American College of Allergy and Immunology
• Member: American Thoracic Society
• Member: British Thoracic Society
• Member: American Academic of Sleep
• Member: Asia Pacific Society of Respirology
• Member: American College of Chest Physicians
• Member: European Association for Bronchology
• Member: American Association for Bronchology
• Member: European Respiratory Society
• Fellowship: Royal College of Physicians, Edinburgh
• Fellowship: Royal College of Physicians, Edinburgh

Publications

• Polymerase Chain for Tuberculosis-Narasimhan R, Illangho RP, and Seethalakshmi- Lung India (1998), XVI, No.4 (Page 150 to 154).
• Pneumocystis Carinii Pneumonia-Narasimhan R, Illangho RP, Mahadevan S-Lung India (1999), XVII, No.1 (Page 35-37).
• A case report of endobronchial sarcoidosis-Narasimhan, Gayathri and Jayaraman-Current Medical Trends 8(3) 1600-1603.
• He has written a chapter on “Acute Severe Asthma” in the Association Physicians of India Textbook “Medicine Update 2005”.
• Written a chapter on the ideal Bronchoscopy suite in the book titled “Practical Approach to Critical Respiratory Medicine.
• Sleep disorders and Fiberoptic Bronchoscopy Organizing Capabilities Organized Indian Bronchology Conferences in Chennai in 1995.

• Bronchoscopy
• Thoracentesis
• Pleurodesis
• Biopsy
• Stenting
• Electromagnetic navigation bronchoscopy
• Bronchoalveolar lavage
• Argon plasma coagulation
• Endobronchial valve