IRCT20160818029414N7 IRCT 2020-06-22 Zanjan University of Medical Sciences Comparison of the effect of apple extract and oral drops gastrolit (Zataria multiflora) on gastric residual volume and pulmonary aspiration in patients under mechanical ventilation Comparison of the effect of apple extract and oral drops gastrolit (Zataria multiflora) on gastric residual volume and pulmonary aspiration in patients under mechanical ventilation in the Intensive Care Unit of Valiasr hospital of Zanjan in 2020 2020-01-21 anticipated 90 Complete https://irct.ir/trial/44807 interventional Randomization: Randomized, Blinding: Single blinded, Placebo: Used, Assignment: Parallel, Purpose: Prevention, Randomization description: In this study, patients will be randomly assigned using blocking method, Blinding description: After randomization, we do not tell the patient in which of the three groups. In fact, the interventionist and the analyst are aware of the allocation of groups, but patients do not know in which group they are. N/A Dyspepsia. Intervention 1: Intervention group: In the first group will gavage at 9 am, 3 pm and 9 pm, 8 cc apple extract 12 cc water immediately after gavage main meal. Intervention 2: Intervention group: The second group will gavage 20 drops of Gastrolith (Zataria multiflora) plus 20 cc water 3 times daily before the main meals at 9 am, 3 pm and 9 pm for 5 days. Intervention 3: Control group: The control group will be gavaged after 9 am and 3 pm and 9 pm with gavage meals. Undecided - It is not yet known if there will be a plan to make this available Justification or reason for indecision in sharing IPD is No more information.