Primary Care
Physician perspectives on preventive care, chronic disease management, and evidence-based primary care practice.
Recent Discussions
Do you recommend decreasing the loop diuretic dose when starting an SGLT2 inhibitor in a CKD patient given its natriuretic and osmotic diuretic effects?
The decision to continue or not a loop diuretic when starting an SGLT2 inhibitor should be individualized based on the patient's blood pressure/volume status.In general, if a patient's blood pressure/volume status is high, like in the setting of heart failure, SGLT2 inhibitors, and loop diuretics ar...
If a PET/CT scan is positive for mediastinal lymph node involvement, is a mediastinoscopy or EBUS still required for NSCLC staging?
The gold standard for mediastinal staging is still mediastinoscopy. You can have 15 to 20 percent false positive PET findings in mediastinum and for these patients surgery should not be excluded based on PET findings alone.
Is either ESR or CRP more sensitive or specific for the diagnosis of GCA?
I typically obtain both an ESR and a CRP in the workup of new onset or relapsing GCA. The CRP may be slightly more sensitive than the ESR based on Kermani et al., PMID 22119103 which demonstrated a sensitivity of 86.9% and 84.1% respectively for CRP and ESR, for a positive TAB. There is discordance ...
How do you treat post-IVIG headache that is not responsive to Tylenol or NSAIDs?
In my opinion, there is no one simple treatment for such headaches. We try slowing the infusion rate, premedicate with steroids, low dose Lasix, or premedicate with Nurtec. Usually, one of these methods helps minimize or eliminate the headaches.
When do you start anticoagulation for secondary prevention in patients with HFrEF and history of embolic strokes?
Current guidelines consider anticoagulation in patients with reduced EF as class III (no benefit and possibility of harm), which has not changed significantly since WARCEF was published. The most recent randomized large trial, COMMANDER HF, looked at primary stroke prevention (among other thrombotic...
What DHE migraine protocol works best for acute treatment both in terms of dosage and timeframe?
Dihydroergotamine (DHE) is a non-specific ergot that acts on the serotonergic, dopaminergic, and adrenergic pathways. It is used as an acute migraine treatment that can be given parenterally or nasally. Oral does exist, but is not available in the USA. It may be used acutely as a rescue treatment du...
How do you approach a mildly positive finding on an autoimmune encephalitis panel when there is no other evidence of encephalitis (such as elevated CSF protein, abnormal imaging, or EEG findings)?
In general, low positive Abs by ELISA or radioimmunoprecipitation assays have low predictive value for neurological disease and cancer outside of specific clinical contexts (e.g. a PQ of 0.03 nmol/L in a patient with myasthenic syndrome).For encephalitis, GAD65 < 20 nmol/L, and PQ type calcium chann...
In patients with recurrent ischemic infarcts on the same side as an internal carotid artery lesion, is intervention warranted even if there is less than 50% obstruction?
If a carotid web is found, it would be reasonable to consider intervention to prevent thrombus formation and embolization. Grory et al., PMID 30621527
What is the utility of an oral calcium loading test to differentiate FHH from secondary hyperparathyroidism due to low calcium intake?
Both vitamin D deficiency and calcium deficiency can result in secondary hyperparathyroidism. Before entertaining the diagnosis of FHH, I would treat the patient with an adequate calcium intake of 1000 mg a day of elemental calcium preferably from dietary sources like dairy. Supplemental sources are...
Do you routinely check G6PD level prior to initiation of hydroxychloroquine?
No, we do not routinely check G6PD levels prior to initiation of hydroxychloroquine (HCQ). The American College of Rheumatology does not recommend routine testing for G6PD prior to initiation of hydroxychloroquine (HCQ), but interestingly, package inserts often recommend caution in these patients. O...