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Effect of anticholinergic burden on cardiac functions in older patients
Hakan Fotbolcu1, Pınar Soysal2
1Department of Cardiology, Bezmialem Vakif University, Başıbüyük Mahallesi, Emek Caddesi, Narcity, No: 281 A2b Blok D: 56, Maltepe, Istanbul, Turkey. hakan_fotbolcu@yahoo.com.
Insights
A high anticholinergic burden in older adults is linked to impaired heart function, specifically affecting systolic and diastolic capabilities. However, this burden alone does not fully account for increased hospitalizations and mortality in this population.
Area of Science:
- Cardiology
- Geriatrics
- Pharmacology
Background:
- Anticholinergic medications are widely prescribed for older adults.
- A high anticholinergic burden (ACB) is associated with adverse health outcomes.
- The impact of ACB on cardiac function in the elderly requires further investigation.
Purpose of the Study:
- To investigate the effects of a high anticholinergic burden on myocardial systolic and diastolic functions.
- To assess the impact of ACB on cardiac electrical functions in older adults.
Main Methods:
- Compared 24 patients with high ACB (ACB scale ≥ 2) to 26 controls (ACB=0).
- Evaluated biventricular systolic and diastolic functions using echocardiography.
- Measured heart rate and corrected QT interval (cQT) to assess electrophysiological changes.
Main Results:
- Patients with high ACB showed impaired biventricular systolic and diastolic functions.
- Key systolic parameters (lateral-S, septal-S, tricuspid-S) were significantly lower in the high ACB group.
- Left ventricular filling pressure (E/E') was elevated in patients with high ACB.
- No significant differences in heart rate or cQT were observed between groups.
- Serum albumin levels were lower in the high ACB group.
Conclusions:
- A high anticholinergic burden is associated with moderate impairment of systolic and diastolic cardiac functions in older adults.
- The observed cardiac dysfunction, while significant, does not solely explain the increased hospitalization and mortality rates in this population.
Background:
This study investigated the detrimental effects of a high anticholinergic burden on both myocardial systolic-diastolic functions and electrical functions in older adults.
Methods:
A total of 24 patients with a high anticholinergic burden and 26 control patients were enrolled. The anticholinergic burden was assessed using the anticholinergic burden (ACB) scale. An ACB of ≥ 2 was categorized as high anticholinergic burden, while those with an ACB score of 0 were included in the control group. Each participant's diastolic and systolic functions were evaluated using transthoracic two-dimensional, conventional and tissue Doppler echocardiography. Heart rate and corrected QT interval (cQT) were also measured to assess electrophysiological changes.
Results:
The mean age was 72.5 ± 6.6 years. Biventricular systolic and diastolic functions were impaired in the high ACB patients. Systolic function parameters such as lateral‑S (8.04 ± 1.43 vs. 9.54 ± 1.82, p = 0.003), septal‑S (7.33 ± 0.64 vs. 8.27 ± 1.31, p = 0.007) and tricuspid‑S (12.42 ± 1.72 vs. 14.31 ± 3.17, p = 0.025) values were lower in the ACB patients compared to the control group. The indicator of left ventricular (LV) filling pressure (E/E') was higher in ACB patients than in the controls (11.61 ± 2.89 vs. 8.83 ± 1.68, p < 0.001). There was no significant difference in terms of heart rate and cQT. Serum albumin levels were lower in ACB patients comparing to controls (4.08 ± 0.33 vs. 4.38 ± 0.27, p = 0.001).
Conclusion:
A high anticholinergic burden is associated with moderately impaired systolic and diastolic functions, yet on its own, it does not sufficiently explain the increased hospitalization and mortality observed in older adults.
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