The aim of our study is to evaluate the contribution of ultrasound in the insertion of central venous catheters subclavian and internal jugular in terms of feasibility and complications.
Patients were enrolled from March to September 2015. The ultrasound guidance was performed with a portable device like Sonosite and a high frequency probe (7,5MHz). Data collected were: the patient´s morphological data, the exposure time and possible complications. All punctures were performed using the cross section with a vascular puncture "off plan". The residents received theoretical training followed practical examples before being included in the study. 
Results: 20 central pathways subclavian(sc)and20 internal jugular(jug) were included.
The results in terms of learning, success and complications are presented in Table . the learning was fast: after laying the vein catheters 5 subclavian and 3 to the internal jugular vein, a resident was able to successfully placing a central line in the first puncture. The central venous line has been set up in the first puncture in 62% of cases. The subclavian puncture site averaged 55 mm below the clavicle and 90 outside the manubrium. For the internal jugular vein is behind the common carotid artery in 35% of cases and within in 20% of cases. The encountered complications were arterial puncture, a case of aberrant course (retrograde) and one case of pneumothorax in the way subclavian; and 3 cases of arterial puncture in the internal jugular. 
First attempt success rate:sc (75%) vs jug (85%) p= 0.47;Average number of puncture: sc (1.35) vs jug (1.3) p= 0.82; Complication rate:sc (15%) vs jug (15%) p= 1; Average time guide the climb(min): sc (8,6) vs jug (7.9) p=0,23; Medium difficulty level (0à10): sc (4/10) vs jug ( 3/10) p= 0.66.
Conclusion: Learning the central venous line break jugular or subclavian under ultrasound guidance is fast. The introduction of ultrasound guidance device lengthens the preparation time but must be weighed against the high rate of success in the first puncture. The ultrasound guidance can puncture the subclavian vein more laterally, away from the pleural dome considerably reducing the risk of pneumothorax and to reduce the risk of arterial puncture to the external jugular vein. The study showed no difference between the subclavian and internal jugular vein.

Evaluation of central venous catheters pose under clavicular and ultrasound-guided internal jugular by young residents