BACKGROUND: Chronic heart failure (HF) disease as an emerging epidemic has a high economic burden, hospitalization, readmission, morbidity rates despite many clinical practice guidelines recommendations.

OBJECTIVE: To show that the attributed survival and hospitalization-free event rates in the reviewed chronic HF clinical practice guidelines' Class I-A recommendations as "initial HF drug therapy" is basically "add-on HF drug therapy" to the "baseline HF drug therapy" thereby under-estimating the "baseline HF drug therapy" significant contribution to the clinical outcome.

METHODOLOGY: The references cited in the chronic HF clinical practice guidelines of the American Heart Association/American College of Cardiology (AHA/ACC), the Heart Failure Society of America (HFSA), and the European Society of Cardiology (ESC) were reviewed and compared with the respective guidelines' and other countries' recommendations.

RESULTS: The "baseline HF drug therapy" using glycosides and diuretics is 79-100% in the cited HF trials. The survival and hospitalization event-free rates attributed to the "baseline HF drug therapy" are 46-89% and 61.8-90%, respectively. The survival and hospitalization-free event rate of the "initial HF drug therapy" is 61-92.8% and 61.8-90%, respectively. Thus the survival and hospitalization event-free rates of the "add-on HF drug therapy" are 0.4-15% and 4.6% to 14.7%, respectively. The extrapolated "baseline HF drug therapy" survival is 8-51% based on a 38% natural HF survival rate for the time period.

CONCLUSION: The contribution of "baseline HF drug therapy" is relevant in terms of survival and hospitalization event-free rates compared to the HF Class 1-A guidelines proposed "initial HF drug therapy" which is in essence an "add-on HF drug therapy" in this analysis.

Human ; Heart Failure-Drug Therapy, Survival

BACKGROUND

Observational studies have increasingly reported transthyretin amyloid cardiomyopathy (ATTR-CM) as an under-recognized cause of heart failure. We report the first ATTR-CM diagnosed via multi-modality imaging in the Philippines signifying an important milestone in recognition and management of this formerly believed rare disease, locally. Utilization of non-invasive imaging such as echocardiography, cardiac MRI and technetium-99m pyrophosphate scintigraphy (PYP) demonstrates the potential for accurate diagnosis as well as timely and appropriate treatment strategies.

DISCUSSION

An 81/M Filipino with a history of carpal tunnel surgery, post-percutaneous coronary intervention (PCI), had three months’ history of refractory heart failure symptoms despite optimized medical treatment. His 2D-echo showed an ejection fraction (EF): 45%-50%, increased left ventricular (LV) posterior wall thickness with mild basal inferior wall hypokinesia and ECG: atrial fibrillation with low voltage. Speckle tracking imaging showed average global longitudinal strain: - 6.5% with cherry-on-top pattern on polar strain map. Cardiac MRI demonstrated diffuse late gadolinium enhancement from endocardial to transmural layers of biventricular and biatrial walls, highly suggestive of cardiac amyloidosis (CA). Light-chain amyloidosis was excluded by negative serum/urine protein electrophoresis/immunofixation. Tc-99m PYP scan revealed greater myocardial-than-bone uptake with a Perugini score 3 and calculated heart-to-contralateral ratio of 1.7. Congestion was controlled with intravenous loop diuretics and he was discharged stable with metoprolol succinate, dapagliflozin and apixaban. At the time of paper submission, he is currently being evaluated for tafamidis treatment.

CONCLUSION

The case highlighted the advantage of multi-modality imaging for noninvasive yet accurate identification of the disease. A tailored approach is required in slowing the disease progression and improving outcomes.

Human ; Male ; Amyloidosis ; Cardiomyopathies ; Percutaneous Coronary Intervention ; Sodium Potassium Chloride Symporter Inhibitors