User blog comment:MilitaryBrat/Lord Voldemort vs Darth Vader/@comment-4552610-20111217154652/@comment-4484220-20111218171846

Voldemort would be able to think quite clearly if he was choking. Even less powerful wizards/witches like Bellatrix Lestrange would still be able to focus hard enough to make a non-verbal killing curse even when choking. Wizards are used to doing that even when theres a distraction. So that won't be too much of a problem for the dark lord.