Lower Prescription Rates in Centenarians with Heart Failure and Heart Failure and Kidney Disease Combined: Findings from a Longitudinal Cohort Study of Very Old Patients

Exploring Hyperkalemia Risk in Frail Older Patients Using RAAS Inhibitors

PURPOSE

Renin-angiotensin-aldosterone system inhibitors (RAASi) are widely used in treatment of cardiovascular and renal disease. While effective, they pose a risk of hyperkalemia. In the general population, risk factors for hyperkalemia include chronic kidney disease, congestive heart failure, and use of medication affecting potassium balance. These risk factors are prevalent in frail older patients. Therefore, this study aims to explore the prevalence and risk factors for hyperkalemia associated with RAASi use in this vulnerable population.

PATIENTS AND METHODS

This single-center, cross-sectional study included RAASi users aged ≥ 70 years who presented at the emergency department. Clinical Frailty Scale (CFS) according to Rockwood was calculated retrospectively from information in clinical files. All patients with CFS ≥ 5 were considered frail. Hyperkalemia was defined as serum potassium ≥ 5.5 mmol/L at time of presentation at the emergency department. Potential risk factors for hyperkalemia in older patients were identified using logistic regression models.

RESULTS

Of the 2023 participants, 86 (4.3%) were hyperkalemic, with no significant difference between frail and non-frail patients (4.7% versus 3.3%, p-value 0.157). Hyperkalemic patients were slightly younger than non-hyperkalemic patients (median age 83 versus 84 years, p-value 0.023), and females were slightly overrepresented in both groups (52.6% and 53.5%, p = 0.867). Risk factors associated with hyperkalemia in older RAASi users included younger age (odds ratio (OR) 0.95, 95% confidence intervals (CI) 0.92-0.99, p = 0.010), diabetes mellitus (OR 1.67, 95% CI 1.05-2.65, p = 0.030), moderate to severe kidney failure (OR 9.87, 95% CI 6.01-16.21, p < 0.001), and use of potassium-binding agents (OR 14.62, 95% CI 1.56-137.40, p = 0.019) and potassium-sparing diuretics (OR 2.66, 95% CI 1.57-4.50, p < 0.001).

CONCLUSIONS

Contrary to expectations, this study found no association between frailty and hyperkalemia in older RAASi users visiting the emergency department. These results suggest that frail older patients without additional risk factors can be treated with RAASi when indicated, similar to the general population. The main risk factors for hyperkalemia in this population remain consistent with those in the general population, emphasizing the importance of monitoring kidney function and medication use.

A systematic review of diet and medication use among centenarians and near-centenarians worldwide

Centenarians represent a phenomenon of successful aging. This systematic review aimed to understand lifestyles and health practices, focusing on diet and medication use for healthy longevity in community-based adults 95 years or over. Medline, CINAHL, Scopus, and gray literature were searched from 1 January 2000 to 10 December 2022. Study quality was assessed using the Modified Newcastle-Ottawa Scale (mNOS). Pooled prevalence [%; 95% confidence interval] for categorical variables and pooled mean for continuous variables were estimated for demographics, weight status, lifestyle factors, medications, and health conditions. Of 3392 records screened, 34 studies were included in the review, and 71% (24/34) met the 6/8 criteria in mNOS. Centenarians/near-centenarians' ages ranged from 95 to 118 years, with 75% (71-78%) female and 78% (68-88%) living in rural areas. They had an overall healthy lifestyle: current smoking (7%; 5-9%), drinking (23%; 17-30%), normal weight (52%; 42-61%), overweight (14%; 8-20%), physical activity (23%; 20-26%), and sleep satisfaction (68%; 65-72%). Diet averaged 59.6% carbohydrate, 18.5% protein, and 29.3% fat; over 60% consumed a diverse diet, and < 20% preferred salty food, contributing to lower mortality risks and functional decline. About half used antihypertensives (49%; 14-84%) or other cardiovascular drugs (48%; 24-71%), with an average of 4.6 medications. Common health issues included impaired basic activities of daily living (54%; 33-74%), hypertension (43%; 21-65%), and dementia (41%; 23-59%). The findings of this systemic review underscore the pivotal role of dietary practice and weight management in healthcare strategies to promote healthy ageing. It also recognises rural living styles and sleep hygiene as potential factors contributing to healthy longevity.

Does Superior Bone Health Promote a Longer Lifespan?

INTRODUCTION

Public health achievements throughout the last century have resulted in a steady increase in life expectancy. An emergent subset has distinguished themselves, living well beyond the ninth decade by avoiding or delaying the onset of most age-related diseases, including bone diseases and fractures. In this study, we evaluated the bone health of the oldest community-dwelling individuals living in rural Arkansas.

METHODS

299 patients aged ≥90 years were retrospectively reviewed for recorded fractures within 12 years prior to the investigation period. Records were also examined for medications and test results pertinent to bone health, including thyroid stimulating hormone, vitamin D levels, hematocrit, hemoglobin, body mass index, and bone densitometric values.

RESULTS

68 patients (23%) had at least one fracture documented, and 15 had >1 fracture. 40% of patients with fractures had osteoporosis and 28% had osteopenia, respectively. 232 patients (78%) had no documented fractures, and of these, only 18% had osteoporosis and 16% had osteopenia. No significant clinical markers were found among the very old to explain the relatively low occurrence of fractures.

CONCLUSIONS

Patients over 90 years of age had an overall low prevalence of fractures and relative preservation of bone health, suggesting a preserved bone molecular profile in these individuals. Epigenetic factors and activity levels might also have favorably affected bone health. The low percentage of osteoporosis and fractures likely reduced the morbidity and mortality in this population, potentially contributing to their overall longevity.

[Characteristics and one-year outcomes in elderly patients hospitalised with heart failure and preserved, mid-range and reduced ejection fraction]

INTRODUCTION

The latest European Society of Cardiology Heart Failure (HF) guidelines define three types of HF according to the ejection fraction (EF): HF with reduced EF (HFrEF) when EF<40%, HF with mid-range EF (HFmrEF), when EF 40-49%, and HF with preserved EF (HFpEF) when EF≥50%. The objective of this study was to analyse the characteristics and results of elderly patients hospitalised with HF according to the new classification using EF.

METHODS

A prospective study was carried out with 531 HF patients aged ≥75 years classified according to EF, and admitted in the geriatric wards of 6 hospitals in Spain. An analysis was performed on the demographic and clinical characteristics, as well as well as the morbidity and mortality at one year of follow-up.

RESULTS

As regards EF, 17.1% had HFrEF, 10% had HFmrEF, and 72.9% had HFpEF. Patients with HFmrEF were more similar to those with HFrEF in terms of a younger age, predominance of men, and previous admission due to HF. This was also the case with the use of drugs for neurohormonal blockade. Patients with HFrEF (compared to those with HFmrEF and HFpEF), had higher mortality (35.2%, 24.5%, and 25.6%, respectively), more readmissions for HF (17.6%, 15.1%, and 14.5%, respectively), and more events (61.5%, 45.3%, and 52.5%, respectively), although there were no significant differences. There were also no differences observed in the survival analysis between the EF groups and the time-dependent outcome variables.

CONCLUSIONS

In elderly patients hospitalised with HF, those classified as HFmrEF did not show any clear differences with respect to those with HFrEF or HFpEF. There were no differences in terms of morbidity and mortality.