Clinical Trial to Assess the Effectiveness of Applying Dry Local Heat and/ or High Tourniquet Pressure for Venipuncture.

Low level intervention health products clinical trial, fourth phase, non-commercial research. Dissertation of COMPLUTENSE UNIVERSITY of Madrid. Principal Investigator of this clinical trial: Ms. LETICIA CARMEN SIMÓN LÓPEZ Collaborative investigators: Dr. DOLORES OCHOA-MAZARRO (principal investigator of bioequivalence clinical trial), and Sir. SERGIO LUQUERO-BUENO (collaborative researcher) The setting is Clinical trials Unit of Clinical Pharmacology Department. LA PRINCESA HOSPITAL of Madrid. Research Ethical Committee of LA PRINCESA HOSPITAL of Madrid. Any person will monitor this clinical trial because the sponsor and principal researcher are the same person. Nevertheless, an adherence to this protocol will ensure by principal researcher and co-researchers. The three interventions are: 1. To Apply local dry heat. 2. To apply high tourniquet pressure. 3. To apply both of them. (Dry heat and high pressure) The common comparator: Current Clinical practice for peripheral venous catheterization. The main hypothesis: The number of attempts of success venipuncture at first time are influenced by any of the interventions applied before. The main goal: To identify the most effective intervention of applying dry local heat and/or high tourniquet pressure in relation of number success venipuncture attempts, compared to current clinical practice. Design: An experimental, randomized study which is controlled with current clinical practice to insert a peripheral vein catheter. It is an incomplete cross-over clinical trial, with three arms which are involved interventions and a common comparator. Population: Adult healthy subjects. Sample size: It is required to enroll 54 subjects with a 95% of level of confidence and 80% level of power. Main variable: Succeed peripheral vein catheter insertion at first attempt. Effectiveness assessment: The optimal effectiveness is considered when vein cannulation success at first attempt exceeds 95% applying any of the interventions. Planned date to address: It is planned to carry out around June and/or July of 2017 for the main variable.