retired doc's thoughts

 A study of fifty patients by Y. Hu et al (1)  indicates that it does matter. Two problems with His pacing are higher capture threshold volt...

His Bundle pacing  (HBP) has been known for years to be capable of normalizing bundle branch blocks. By normalizing I mean that the QRS whil...

 Some pacemaker programming features do not work well with His Bundle pacing and may cause some  problems raising the question of why have p...

Introductory and personal note Five  plus years ago I experienced a sudden decrease in my exercise ability.As a long time marathon runner I...

 To understand why EP cardiologists might have considered  His Bundle Pacing (HBP) the holy grail it might help to have a brief survey of so...

 The leads in a pacemaker (PM) is said to be the Achilles heel of those systems.A close runner up in the Achilles heel competition is the PM...

 There are several reports suggesting that endurance athletes enjoy good longevity .These studies have involved professional cyclsits,Ski ra...

 A study from Spain (1)demonstrated late gadolinium enhancement in 37 % of highly trained young endurance athletes, all of which occurred at...

 Can normal pacemaker behavior near battery depletion cause alarming symptoms and clinical diagnostic difficultly? To put the topic in conte...

Ross Douthat,writing in the WSJ on 12/19/2020 entitled his opinion piece "Why you can't just trust the science." I think he wa...

 To discuss software problems and their effect on pacemakers  an overview of their "ecosystem" might be helpful. The ecosystem of ...

 There are  an estimated 200,000 pacemaker implantations per year in the U.S and only about 2,000 board certified EP cardiologists. I believ...

 The relationship between the volume of aerobic exercise and health benefits has been described alternatively as curvilinear or U shaped wit...

 At least as early as 1989 CL Grines described significant functional abnormalities in patients with left bundle branch block (LBBB). Blanc ...

It has been known for at least 20 years or more than endurance exercise done over a  period of  time can mitigate the age related increase i...

 The Pareto Principle or the 80/20 rule states that a small number of events are  often responsible for a large numbers of consequences or o...

Regular exercise may prevent-or at least  significantly slow down- motor unit loss  in the muscle groups exercised.  GA Powers et al demonst...

 Goeffrey Rose in his 1985 book "Sick Individuals and Sick Populations" likely never intended to provide  intellectual grist for t...

Considerable data exist that  allow reasonable estimates of the volume of exercise required to : 1) decrease cardiovascular disease (CVD) ri...

Do long time endurance athletes have an increased risk of coronary calcification? If so, does that correspond to an increase risk of cardio...