Aim: to show the length of hospitalization in relation to the clinical and therapeutic approach in infants hospitalized for bronchiolitis at the Department of Pulmology of the Pediatric Clinic of the University Clinical Centre Sarajevo. Introduction: bronchiolitis is the most common respiratory disease in infancy, and its etiology is viral and in most cases it is Respiratory syncytial virus (RSV). It usually begins with the clinical signs of the common cold, such as runny nose, mild cough, fever and after a day or two, the cough intensifies and the baby gets tachydispnoic. Symptoms are more expressed in young infants due to small diameter of the airways. There is no specific therapy for RSV or any other virus causing bronchiolitis. Antibiotics are not recommended given that it is a virus caused infection. Materials and methods: this is a retrospective study in which we analyzed the histories of the disease in 155 patients hospitalized for bronchiolitis at the Department of Pulmology of the Pediatric Clinic in Sarajevo in a period of one year. Results: in the clinical picture of our patients the predominant symptoms were represented in the following order: dyspnea in 139 patients (89.7%), cough in 136 (87.7%), nasal secretion in 112 (72.3%), fever in 53 (34.2%), dehydration in 44 (28.4%), wheezing in 42 (27.1%) and vomiting in 17 (11%) patients. Bronchopneumonia as an early complication was seen in 7 patients (4.5%). The most commonly used drugs were: corticosteroids in 115 (74.2%), oxygen supplementation in 81 (52.3%), salbutamol in 109 (70.3%), ipratropium bromide in 3 (1.9%), adrenaline in 31 (20%), antibiotics in 95 (61.3%), aminophylline in 9 (5.8%) and antileukotriene in 38 (24.5%) patients. The largest number of hospitalized infants was in the group hospitalized up to seven days, 119 (76.8%) patients, followed by 34 (21.9%) infants hospitalized in the period from seven to fifteen days, and 2 (1.3%) infants were in the group hospitalized over fifteen days. We had no patients on mechanical ventilation or with lethal outcome. Conclusion: the largest number of infants was hospitalized for the period up to seven days. Length of hospitalization of patients with oxygen therapy was statistically significantly shorter in comparison to patients without oxygen therapy, whereas hospitalization of patients who were treated with adrenaline, ipratropium bromide, salbutamol, corticosteroids, antibiotics, antileukotriene and aminophylline was statistically significantly longer. [ABSTRACT FROM AUTHOR]