Cardiology
Expert discussions on heart failure, arrhythmias, interventional procedures, and cardiovascular risk management.
Recent Discussions
For elderly patients (i.e. older than 80) with only one documented episode of paroxysmal atrial fibrillation following a stress event (such as acute illness/steroid administration) and a CHADsVASc score greater than 1, how would you counsel them on the risks/benefits of anticoagulation and subsequent monitoring for afib recurrence?
If it were an isolated event, I would advocate continued monitoring for recurrence before starting an anticoagulant with the understanding that the risk of AF recurrence is relatively high.
Do you routinely order a pre-operative TTE in patients with apparently compensated CHF, but who have not had an echocardiogram in some time?
In a patient with compensated CHF (with stable symptoms), I do not routinely order pre-operative echocardiograms for evaluation of ejection fraction. There are some situations in which it may be helpful for perioperative risk assessment, counseling, and management.The 2024 ACC/AHA (American College ...
What class(es) of antihypertensives should be considered next for refractory hypertension in a patient compliant with high doses of Entresto, chlorthalidone, amlodipine, clonidine, and spironolactone if they previously did not have any improvement on beta blocker or hydralazine and work-up for secondary causes were unremarkable?
Minoxidil remains a rarely used but potent option.
Is there evidence to support the use of automated blood pressure checks during exercise stress testing, or does manual BP remain superior in terms of accuracy and consistency?
While there are certainly some advantages with automated blood pressure monitors, there are some limitations that require a manual backup or check. Exercise peak BPs should be verified with manual cuffs as well as measurements during arrhythmias, which can affect the accuracy of automated devices. A...
Do you start a statin concurrently with icosapent ethyl for patients with moderate hypertriglyceridemia and high ASCVD risk, or do you prefer to start a statin alone and monitor triglyceride levels?
Statin therapy can lower TGs modestly (up to 20%) and are the first line therapy for ASCVD risk reduction. Therefore I usually initiate statin therapy first and reassess lipids prior to considering use of icosapent ethyl. Additionally IPE adds pill burden (need to take 4 g a day), so I prefer to wai...
In patients with resolved LV thrombus post-MI after 3-6 months of anticoagulation, would you consider surveillance imaging for thrombus recurrence if there is persistent apical akinesis?
A common and sometimes challenging scenario. If there is persistent LV dysfunction (EF <40%) with apical akinesis /aneurysm, I maintain anticoagulation regardless of thrombus resolution. Recurrence of thrombus, even after echo imaging evidence of resolution in this state has been observed. There is ...
For older adults undergoing intermediate-risk non-cardiac surgery, do you routinely check pre-operative pro-BNP levels for risk stratification based on emerging data and updated Canadian guidelines?
Pre-operative NT-proBNP and BNP levels have been featured, not just in the cited Canadian guidelines but also in the 2024 update of the AHA/ACC preoperative evaluation guidelines. (Thompson et al., PMID 39316661). Those guidelines recommend evaluating a pre-op NT-proBNP level if the results will cha...
What factors do you consider for patients on an individual basis when establishing a post-cardiac arrest MAP goal after ROSC is achieved, considering some may benefit from higher MAP goals for optimal cerebral perfusion?
I generally aim for a MAP of 70. However, I am more concerned with ensuring end organ perfusion and will track urine output, lactate, mental status, and LFTs in addition to the physical exam (cool vs warm and absence of mottling). MAP goal adjustment should also be considered in instances with a wid...
How many days prior to surgery do you recommend stopping SGLT2 inhibitors and when is it safe to resume therapy?
SGLT2-inhibitors have been known to precipitate episodes of diabetic ketoacidosis(DKA) with glucose levels far lower than are usually seen in DKA. This has been called euglycemic DKA. SGLT-2 inhibitors cause an increase in the glucagon to insulin ratio, which promotes ketosis, as well as fluid loss ...
What is your approach to initiating spironolactone in patients with end stage kidney disease and heart failure?
Not sure that we have a consensus answer for this question, but spironolactone in hemodialysis patients likely causes more harm than good.There are data suggesting that spironolactone increases the risk for arrhythmia (heart block or bradycardia; Mc Causland et al., PMID 36763641) and hyperkalemia (...