Cardiology
Expert discussions on heart failure, arrhythmias, interventional procedures, and cardiovascular risk management.
Recent Discussions
How do you decide on the speed and target of blood pressure reduction for spontaneous intracranial hemorrhage?
I think the target and speed of blood pressure reduction in ICH depend on several variables, including initial SBP, clinical stability, hematoma size, and renal function. For patients presenting with SBP >220, I typically aim to lower the pressure to around SBP 160 over the first 12 hours, then grad...
How would you balance the risk of intracranial hemorrhage with thrombosis of mechanical valves in patients with infective endocarditis?
I'm not sure that there is a good answer to this question. If you look at it segmentally, clearly, patients with mechanical valves require anticoagulation, especially in the mitral position. In patients with endocarditis and native valves, whether or not to anticoagulate the patient after or before ...
How do the results of CREST-2 influence your recommendations on screening for asymptomatic carotid stenosis?
Agree with the prior comment. One important nuance is what “medical management” actually meant in CREST-2. This was centralized, protocol-driven care with structured lifestyle counseling and medication escalation, including access to PCSK9 inhibitors with costs covered. Even in that highly organized...
Can a dihydropyridine calcium channel blocker (CCB) like amlodipine be prescribed in addition to a non-dihydropyridine CCB such as diltiazem or verapamil for treating hypertension?
Yes, with extreme caution. Diltiazem and Verapamil are CYP450 inhibitors, which can interfere with the metabolism of many medications (commonly statins and calcineurin inhibitors), but also can increase levels of nifedipine and presumably other dihydropyridine CCBs, like amlodipine. Diltiazem or ver...
Could plasmapheresis be reasonably considered in pregnant patients for primary prevention in asymptomatic familial hypercholesterolemia, and if so, is there an LDL cutoff that would prompt consideration to proceed?
Plasmapheresis/LDL apheresis is considered a safe and effective option for maternal LDL-C lowering in pregnancy, especially in women with homozygous FH, where it is considered standard of care. In heterozygous FH, the use of plasmapheresis for primary prevention is reasonable in patients with a true...
In an asymptomatic patient who has had a routine TTE for non-cardiac reasons, would you order further work-up if there are any WMA or mild LVEF reduction?
Yes, I will follow up with Echo again if he develops symptoms. Yes, I will do a stress test.
How do you calculate QTc intervals in patients being admitted for AAD drug loading who remain in atrial fibrillation or atrial flutter?
We measure 10 R-R intervals and the corresponding 10 QT intervals, average each of them, and then calculate the QTc. Bazett’s formula is commonly used, but is probably less accurate than other correcting formulae, particularly for patients actively in atrial fibrillation. We often use the Framingham...
How do you recommend mitigating the risks of using beta blocker and clonidine therapy in combination for management of hypertension?
Beta blockers vary in lipophilicity, which affects blood-brain barrier permeability. Propranolol and metoprolol readily cross the blood-brain barrier, while other beta-blockers like nebivolol do not. The CNS side effects of fatigue, depression, and insomnia are more likely to worsen if using a lipop...
Do you recommend starting a statin in patients above 75 years old with diabetes but no known ASCVD?
The time to benefit (TTB) for statins in primary prevention of cardiovascular events is generally about 1.5 to 3 years. This means that adults aged 50 to 75 years typically need to take statins for at least 2.5 years to achieve a meaningful reduction in major adverse cardiovascular events (MACE), su...
What continuous duration of device defined atrial fibrillation burden warrants initiation of anticoagulation if the patient qualifies by CHA2DS2-vasc score?
The topic is very controversial and there is no agreement either on the continuous duration of a single episode or the total burden required to initiate AC. Most recommendations are expert opinions. I believe that 5 minutes is the most commonly accepted cutoff, which needs to be combined with an ass...