Materials and Methods
This is a blind clinical trial. None of the subjects knew about the group that they were in. The study was approved by the ethics committee of Isfahan University of Medical Sciences and conducted on mechanically ventilated patients hospitalized in the ICUs of Alzahra hospital. Based on the report of Vincent et al., with first type error of 0.05 and test power of 0.80, the number of the subjects was calculated as 32 in each group.[25] Sampling followed was convenient sampling, and then, the subjects were assigned to study or control group through random allocation. An informed consent was obtained from all the patients (from their parents if the patients were unconscious). Inclusion criteria were age over 18 years, being under ventilation for more than 24 h, not having been affected by pneumonia or respiratory infection (at the time of entrance to hospital, before intubation, and during the first 48 h of intubation), and the prohibition of bed head elevation, ordered by the physician. Exclusion criteria were parents’ refusal to continue with the study, patient's expiration before the end of study, being extubated before the end of study, transfer to other wards or hospitals during the study, and undergoing a surgery during the study.
If you are a good person, and love me, can take care of me. My family to you.If you are a good person, and love me, can take care of me. My family to you.If you are a good person, and love me, can take care of me. My family to you.If you are a good person, and love me, can take care of me. My family to you.
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