Feeds:
Posts
Comments

Posts Tagged ‘complete heart block and triple vessel disease’

CHB with CAD is a  common combination especially in the elderly.

Which will you Intervene first ?  Is the AV block related to CAD  ?

How to differentiate Ischemic from degenerative AV block ?

Differentiating is often difficult.Even coronary angiogram may not answer the query unless it is totally normal . For AV block to occur usually  LCX / RCA lesion is required.  LAD lesion in isolation are rare to cause CHB .

How often re-vascularisation  reverses  ischemic CHB ?

Logically  you expect more reversals.In real world it rarely happens.

Therapeutic options in combined CAD and CHB

  1. PCI and pace maker in the same sitting .
  2. PCI first followed by pace-maker at a later date.
  3. Pace maker first followed by PCI at a later date if required.
  4. CABG  and epicardial pacemaker ( best option In all critical TVD and CHB)
  5. Pace maker followed by CABG later
  6. Pacemaker followed by medical management (CHB with Insignificant CAD)

Can worsening of ischemia  occur after pacemaker  ?

Very much possible . Since the patient  has been benefited by low heart rate in terms of MVO2 consumption .(Inserting a pacemaker  is  like sudden withdrawal of beta blocker !)

Rate adoptive pacing can confer chronotropic competence which  may bring back the angina.So,what was a insignificant lesion  can become hemodynamicaly relevant  and  may require  angioplasty  later.

*The above clinical issue is applicable  for sinus node dysfunction and CAD as well.

Final message

There is no  fixed rule in the management strategy in combined  CHB and CAD .

Generally , electrical  therapy  should be given preference .Symptom guided approach  may be practical.

In this scientific era , one may argue to deal both issues  together by simultaneous  PCI and pacemaker ,  still  option 3 and 6  remain clear  favorites !

If angina  occurs  even in  baseline bradycardia  it is obvious the obstructive CAD  is  significant and needs immediate fixing .

Finally , though it looks an attractive  concept , It is very rare for CHB  to get reverted by PCI or CABG.

 

 

 

 

Read Full Post »