Coronary sinus anatomy: Ajmer Working Group Classification.
BACKGROUND
Coronary sinus (CS) anatomy is a major predictor of successful implantation of left ventricular (LV) lead and procedural outcome. We therefore made an attempt to look at the CS anatomy and possible feasibility to classify them into categories depending upon their size, branching pattern, location of posterolateral vein (PLV), and other parameters in order to guide the cardiologist for successful cannulation of the CS and LV lead implantation.


METHODS
We analyzed the levophase angiograms of patients (n = 100) undergoing routine coronary angiography in the right anterior oblique view. We have made an attempt to classify these observations on the basis of predetermined parameters and a working classification was brought out for the ease of the operator and to predict the bottlenecks of the procedure.


METHODS
On the basis of predetermined parameters, venograms obtained from 100 patients were analyzed and findings were divided into three groups depending upon the ease of cannulation of posterolateral vein for LV lead placement. These 3 groups were further classified as type I, type II, and type III coronary sinuses.


CONCLUSIONS
This observational study proposes a new anatomical working classification for CS for purposes of successful LV lead placement and optimal operative success.
Postgraduate Department of Cardiology, JLN Medical College & Associated Group of Hospitals, Ajmer 305 001, Rajasthan (India). bisht2416@gmail.com.
R K
RK
Gokhroo
Devendra Singh
DS
Bisht
Deepak
D
Padmanabhan
Sajal
S
Gupta
D000715:Anatomy / Q000145:classification*; D058406:Cardiac Resynchronization Therapy / Q000379:methods; D002404:Catheterization / Q000379:methods; D017023:Coronary Angiography; D054326:Coronary Sinus / Q000033:anatomy & histology* / Q000000981:diagnostic imaging*; D006333:Heart Failure / Q000628:therapy; D006352:Heart Ventricles / Q000033:anatomy & histology / Q000000981:diagnostic imaging; D006801:Humans; D010138:Pacemaker, Artificial