Effect of Pursed-Lip Breathing on Physiological Parameters and Discharge Readiness in Children With Pneumonia

Inclusion Criteria: * Children aged 3 to 4 years * Diagnosed with community-acquired pneumonia (CAP), defined as pneumonia occurring in a previously healthy child within 14 days of symptom onset and requiring hospitalization * The child's primary caregiver is the mother * Both mother and child must remain in the hospital for at least 3 days * Hospitalization due to pneumonia with an expected average stay of 4-5 days, based on disease severity and clinical condition * Mother must be present as a caregiver throughout the hospital stay * Voluntary participation with signed informed consent from the parent or legal guardian Exclusion Criteria: * Presence of any chronic disease in addition to pneumonia * Mother not staying as a caregiver during hospitalization * Withdrawal of consent by the mother and/or child * Discharge before 3 days for any reason (e.g., refusal of treatment, early discharge request)