What is left atrial jelly ?
A pre- clot stage with impending clot formation may be referred to as a jelly . The exact duration for a contrast to get converted to clot is not known.It depends host of factors from hemodynamic and rheological factors. It is believed every clot must be preceded by at least a brief period of auto contrast.
Is there a intrinsic defect in blood in those patients who have spontaneous contrast ?
Yes , there has been excess fibrinogen in these patients. http://www.ncbi.nlm.nih.gov/pubmed/11744141
Can we dissolve spontaneous contrast ?
It may be possible with intensive anti coagulation. Ultrasonic dessication may be a modality that could be developed in future.
Is the presence of spontaneous echo contrast a contraindication to do PTMC/CMC ?
Some centers do believe so. Currently intensive anticogulation , meticulous preparation with special precautions during procedure will reduce embolic manifestation.