 The lead from the Boston Scientific Dextrose model 12345, serial number 12345 was inserted through the left subclavian to the right atrium; however, it was difficult to really enter the right ventricle; and while the lead was in place, the side port of the sheath was used to inject 15 mL of contrast to assess the subclavian and the right atrium. 
The lead from the Boston Scientific Dextrose model 12345 , serial number 12345 was inserted through the left subclavian to the right atrium ; however , it was difficult to really enter the right ventricle ; and while the lead was in place , the side port of the sheath was used to inject 15 mL of contrast to assess the subclavian and the right atrium .