Increasing rates of screening and treatment of iron deficiency in ambulatory patients with heart failure with reduced ejection fraction: a quality improvement cohort study

INTRODUCTION

Iron deficiency anaemia (IDA) is common in patients with heart failure (HF) and is associated with advanced HF and increased mortality. Intravenous iron supplementation increases exercise tolerance, improves quality of life, and decreases symptoms among patients with HF with reduced ejection fraction (HFrEF) and iron deficiency. Despite this, many patients are not screened or treated for IDA. We aimed to increase rates of screening and treatment of IDA among HF patients through the introduction of curated materials to aid HF clinicians with appropriate screening and treatment.

METHODS

We conducted a retrospective chart review to identify the baseline number of HFrEF patients screened and treated for IDA at two ambulatory cardiology clinics in Toronto, Ontario. A quality improvement initiative was then introduced, which consisted of education and curated materials to aid clinicians in the screening and treatment of IDA among HFrEF patients. The proportion of patients screened and treated for IDA preintervention and postintervention were compared using χ2 tests of Independence.

RESULTS

In the preintervention cohort, 36.3% (n=45) of patients with anaemia were screened for IDA. Among those screened, 64.4% (n=29) had IDA. Only 17.2% (n=5) of these were treated with IV iron. After implementation of the quality improvement initiative, 90.9% (n=60) of patients with anaemia were screened for IDA (p<0.001) and 90.3% (n=28) of those with IDA were treated with IV iron (p<0.001).

CONCLUSION

The introduction of curated materials to aid clinicians was associated with increased rates of screening and treatment of IDA among ambulatory HFrEF patients. Further work is required to identify barriers and implement strategies to increase screening and treatment rates of IDA among HFrEF patients.

The "Lightbulb" Sign: A Novel Echocardiographic Finding Using Ultrasound Enhancing Agent in Fulminant COVID-19-Related Myocarditis

We report a case of fulminant COVID-19-related myocarditis requiring venoarterial extracorporeal membrane oxygenation where the use of an ultrasound-enhancing agent demonstrated a previously undescribed echocardiographic finding, the "lightbulb" sign. This sign potentially represents a new area for the use of an ultrasound enhancing agent in the echocardiographic diagnosis of myocarditis.

Treatment of Drug-Eluting Stent In-Stent Restenosis With Drug-Eluting Balloons: A Systematic Review and Meta-Analysis

OBJECTIVE

To evaluate the efficacy of drug-coated balloon (DEB) for the treatment of drug-eluting stent (DES) in-stent restenosis (ISR).

METHODS

A comprehensive literature search was performed. The primary outcome was the composite of death, myocardial infarction (MI), and target-lesion revascularization (TLR) at longest available follow-up (range, 12-36 months). Outcomes for DEB vs balloon angioplasty (BA) and DEB vs DES were analyzed separately using a random-effect Mantel-Haenszel model, as per an a priori protocol.

RESULTS

The study cohort comprised 1526 patients (746 DEB, 537 DES, 243 BA). DEB was associated with lower composite outcome compared with BA alone (19% vs 47%; risk ratio [RR], 0.31; 95% confidence interval [CI], 0.11-0.84; P=.02), driven primarily by lower TLR (17% vs 34%; RR, 0.66; 95% CI, 0.46-0.95; P=.03), with no difference in death or MI. There was no difference in the composite outcome between DEB and DES (20% vs 17%; RR, 1.2; 95% CI, 0.82-1.74; P=.35); DEB was associated with higher TLR (17.4% vs 11.3%; RR, 1.48; 95% CI, 1.08-2.03; P=.01), but lower all-cause mortality (2.2% vs 5.7%; RR, 0.43; 95% CI, 0.22-0.82; P=.01), with no difference in MI or stent thrombosis.

CONCLUSIONS

DEB was associated with a lower TLR rate than BA alone, but associated with a higher TLR rate than implantation of another DES. However, additional DES use was associated with an increase in mortality, a finding that requires further investigation.

An unexpected case of Ramsay Hunt syndrome: case report and literature review

Background

Ramsay Hunt Syndrome (RHS) is a rare, severe complication of varicella zoster virus (VZV) reactivation in the geniculate ganglion. Facial paralysis is one of the features and without treatment, it fully recovers in as little as 20% of cases; this is much improved if treatment is started within 72 hours. This case is noteworthy in that coexistence of facial palsy with cervical dermatome involvement by VZV is not typical of RHS. Yet, it has been reported before.

Case presentation

A 54 year old Caucasian woman presented with right ear discomfort, difficulty hearing and a vesicular rash along the pinnae, 8 days after the eruption of a similar rash in the right C2-C4 dermatomes. 2 days later, she awoke with a partial right-sided facial paralysis, which improved with treatment (valacyclovir and prednisone).

Conclusions

This case is most pertinent to Family Practice, Otolaryngology and Neurology. It highlights the possible co-existence of RHS with cervical VZV reactivation and encourages physicians to monitor for this complication even before geniculate ganglion reactivation occurs. RHS is a rare disease that can present with vague symptoms. A high index of suspicion and close follow up are essential. Early intervention with antivirals and corticosteroids has shown significantly improved outcomes in these patients.