Choosing a pacemaker is not a child’s play . It is a complex game played by cardiologists , electro-physiologists and their ill-informed
patients. The superiority of dual chamber pacing over single chamber pacing was never convincingly proven.
Still . . . usage of dual chamber pacing is steadily increasing over the years for various reasons.
“Every thing hangs around a key word called quality of life . DDD pacemaker is supposed to enrich life due to their AV synchrony “
World health organization says quality of life of homo-sapiens are determined by at least few dozen factors .They are mostly non medical.
How an extra lead at a cost of 2000 dollars more , is going to provide that elusive “quality of life” to all those poor patients with bradycardia in this world , which . . . they any-way lacked even in their best of times !
Scientifically also there is a major flaw in calling DDDR as physiological pacemaker