Cardiology
Expert discussions on heart failure, arrhythmias, interventional procedures, and cardiovascular risk management.
Recent Discussions
How do you use IVC caliber and collapsibility to guide decisions about diuresis?
I use IVC caliber in conjunction with my lung exam to assist with the assessment of right and left atrial pressures respectively. The IVC assessment has many caveats in different patient populations, and evaluation with POCUS can be done in two planes to better understand IVC shape.Caveats - IVC siz...
What are the current clinical practices for TEE to guide cardioversion and anticoagulation duration post-cardioversion for Afib/flutter in patients following left atrial appendage closure?
Right now, there is not a great deal of data to guide us to answer this question. In general, the safest thing from a stroke prevention standpoint would be to adhere to the same guidelines that we would for patients without left atrial appendage occlusion devices. However, of course, most of these p...
Is it reasonable to consider the use of DOACs for LV thrombus management instead of coumadin?
I have no qualms whatsoever at using a DOAC instead of Vitamin K antagonist in this situation, provided that the patient doesn't have a mechanical valve. Endothelium is endothelium, so mechanistically I don't see much of a difference between using a DOAC to prevent/treat an LAA thrombus versus an LV...
Are there specific types/brands of drug-eluting stent you prefer that perform well in terms of lower ISR rates or ones that are better for patients with high bleeding risk?
That is a great question. All of the currently available drug-eluting stents are very safe, and you can now get away with just one month of dual antiplatelet therapy (DAPT) in a patient with high bleeding risk. There is more and more evidence of using clopidogrel only monotherapy instead of using DA...
What is the clinical significance of newly appreciated left atrial enlargement following atrial fibrillation ablation and approach to monitoring for atrial fibrillation recurrence post-ablation in that setting?
An enlarged left atrium is a risk factor for recurrent AF after ablation or during antiarrhythmic drug treatment. How much it increases risk is not completely understood. While LA size or volume can be used to help decide about post-treatment monitoring, the most important element is vascular risk, ...
What is your stepwise approach to managing no re-flow during PCI?
It’s not so much the vasodilator cocktail, as much as it is, getting the vasodilator cocktail into the capillary bed. This is best achieved by very distal injection via any thrombectomy catheter (which can also be used for thrombectomy if needed). Adenosine at 24 mcg/cc + nicardipine (or verapamil) ...
What are reasonable next steps in the work-up of suspected ATTR amyloidosis if the PYP scan is equivocal, in light of the potential risks of endomyocardial biopsy?
Before addressing the next move after an equivocal PYP scan, some comments on PYP scan reporting are in order. Unfortunately, despite the relative simplicity of obtaining a high quality PYP scam, around 10 -20% of the ones that we see done at outside institutions (including teaching institutions) ar...
How do you use NT-proBNP in patients with chronic kidney disease or end-stage kidney disease, given that these conditions can affect NT-proBNP levels?
NT-proBNP is most useful for (a) diagnostic uncertainty in patients who present with dyspnea, and (b) prognostication in heart failure. It is released as a result of ventricular wall stress. In CKD, the clearance of NT-proBNP is impaired, leading to elevated levels. In late-stage CKD and ESRD, volum...
How do you decide between stereotactic arrhythmia radiation (STAR) and repeat catheter ablation in patients with refractory ventricular tachycardia who have already failed one prior ablation?
This is a great question and something that the ongoing RADIATE-VT trial is working to answer (NCT05765175). In this phase III RCT trial, recurrent VT patients who have had at least one prior catheter ablation, are considered to be candidates for a repeat catheter ablation by their electrophysiologi...
What techniques do you use in the lab to reduce the amount of contrast that needs to be used in patients with CKD?
Avoid LV angiogram. Use ECHO instead to assess LV function.