Pneumothorax is a common medical problem globally and develops as a consequence of different etiology. Means a medical condition described by the presence of air in the pleural space, i.e. between the lungs and the chest wall. Two types of pneumothorax in roughly are traumatic and atraumatic. The subtypes of the atraumatic pneumothorax are primary and secondary. In most cases, the diagnosis is based on X-ray, while the smaller pneumothorax is sometimes not seen on X-ray, but is diagnosed with computerised tomography (CT) or ultrasound examination. Treatment depends on the type and way pneumothorax is produced. The tasks of the nurse/technician are described from the very admission of the patient to the hospital, taking of historical data, information on possible trauma, monitoring of the general condition and condition of the patient's consciousness, assisting in diagnostics, procedures and treatment of the patient. The nurse/technician provides emotional support to the patient and his/her family, monitors the appearance of secretion, controls the work of the apparatus necessary to treat pneumothorax or to monitor the patient's condition, notifies the physician of any deviation from the normal patient condition. The aim of the research was to present prevalence and the need for health care of hospitalised patients diagnosed with pneumothorax at Varaždin General hospital in the period from 1.1.2019 to 31.12.201. This research leads to the conclusion that people of male origin, persons over 60 years of age and persons diagnosed with spontaneous pneumothorax are more ill. Speaking of the type of treatment, the highest prevalence of the surgical positioning of the thoracic jerseys in relativno to conservative treatment is evident. The number of days of drainage, i.e. removing it, is most common within one week. This paragraph is also associated with the number of days of hospitalisation, which is most common within one week. The patient categorisation on the first day of hospital and the last day of hospitalisation is almost the same, that is, it remained unchanged, so the majority of patients were categorised as Category 1 when the patient was admitted and released.