Enteral nutrition is the treatment of choice for malnourish patient. Nasogastric tube (NGT) is although a common act. Unfortunately, this procedure can be painful. Also, many patients will need many NGT re-insertion. Therefore, the investigators need to increase the acceptability of this procedure by increasing comfort during NGT passage. Professionals guidelines of HAS (recommendations professionnelles de bonne pratiques de soins) and SFNEP (Société Française de Nutrition Clinique et Métabolisme) talk about the possibility of using local anesthesic without ordering their use. However, NGT tube insertion is often put without pre-medication in the face of an accumulating body of evidence indicating that local anesthetic prior NGT insertion decrease discomfort of the procedure. On the other hand, these studies have been done in the emergency room with NGT of a bigger gauge and for many reasons except enteral nutrition.

The investigators primary objective of this prospective monocentric study is to evaluate the efficacy (patient comfort) of lidocaine 5 % spray versus placebo (physiologic serum) before NGT insertion in patient needing enteral nutrition, using visual analogue scale. Secondary objectives are to evaluate nurse and patient satisfaction using questionnaires, facility of NGT insertion using Likert scale, numbers of try, time of procedure, complications like tracheal insertion and success of the insertion using thorax x-ray.

The study will be held in CHU Nice at nutrition unit support. After signed consentment, patients will be separate in two groups : group A (lidocaïne spray 5 %) and group B (physiologic serum). There will be 2 spray in nostril and 2 in orophagyngeal cavity 2 minutes before NGT insertion, which will be done by a competent nurse. Vital signs will be noted at the beginning of the procedure and 10 minutes after. At the end, the nurse and the patient will have to answer a questionnaire. Pain will be grade using visual analogue scale immediately after the procedure. Demographic data and complications will be note by the investigator. Finally, thorax X-ray will be done at the end of the procedure. There will be 34 patients by group. If the investigators find a benefit, this can change their practice and guidelines.

Inclusion Criteria:

• > 18 years
• Patient needing enteral nutrition by NGT
• Signed consentment
• Affiliation to securite sociale

Exclusion Criteria

• Lidocaine allergy
• Severe demencia
• Non cooperating patient
• Facial trauma and basal skull fracture
• Reflex deglutition problem
• Pulmonary illness like severe asthma
• Hemodynamic instability
• Pregnancy and nursing
• Patient on guardianship