pneumothorax, subclavian artery puncture, subclavian vein laceration, subclavian vein stenosis, hemothorax, thrombosis, air embolism, and catheter misplacement). Therefore, right internal jugular vein under ultrasound guidance should continue to be the preferred first attempt site (6).Finally, in the study by Zawadka et al (1) it is interesting to note that the subgroup analysis did not show any difference in complication rates before or after 2012 (p = 0.97), whereas after 2012 real-time ultrasound guidance for axillary vein cannulation is judged to be the superior technique. However, the reader should be aware that this result referred to real-time ultrasound-guided axillary vein cannulation and not cannulation of the subclavian vein, which still needs to be approached using the landmark technique below the clavicula.