End tracheostomy is done in patients undergoing surgery for:
(Refer: PL Dhingra, Textbook of Ear, Nose, Throat, 6th edition, pg no: 316)
Types of tracheostomy

Emergency tracheostomy
Elective tracheostomy
Permanent tracheostomy
Percutaneous dilatational tracheostomy
Mini tracheostomy

Indications of tracheostomy
Laryngectomy
Laryngofissure surgery
Oropharyngeal tumor
Obstructive sleep apnea with stridor