Second-generation ventricular assist devices (VADs) emerged after the first-generation, which had proven that mechanical assistance of the ventricular function is a promising therapy.
12.34pm: In quick succession, Nico Roche and Brent Bookwalter call for mechanical assistance.
This mechanical assistance reduces the amount of work required of the left ventricle.
Back in the yellow jersey group, Chris Froome drops back to his team car for some sort of minor mechanical assistance.
In a matter of months the disease left him paralyzed and able to breathe only with mechanical assistance, but he continued to lecture and write.
For the purists, who believe that hang gliding should never require mechanical assistance like towing, it was perhaps the greatest prize.
Mr. Parisot cannot write by hand or type; he endures four hours of medical treatment every day and can breathe only with mechanical assistance.
Active arboreal life requires the mechanical assistance of a long tail and sensitive, grasping hands and feet with opposable thumbs and big toes to aid in climbing and to ensure stability on slender branches high above the ground.
But the act's legislative history makes clear that Congress never intended to stop people from using their own power to travel or shepherd their children, or from using light mechanical assistance that leaves no lasting trace.
"Having reverse is more than just a convenience," he said, noting that since the engines on most two-stage snow throwers are fairly heavy -- generally, the larger two-stage snow throwers weigh more than 200 pounds -- backing them up without mechanical assistance can take a considerable effort.
The waves on Tuesday towered up to 20 metres and moved at 25mph so without any mechanical assistance and in a howling wind, to be in the right place to avoid an immediate and potentially fatal wipeout required every bit of his 16 years of experience as a professional.
