Risk of Falling and Cardiac Rehabilitation

Cardiovascular Diseases, Elderly (People Aged 65 or More), Risk of Falling

risk of fall, cardiac rehabilitation

Background and Rationale Cardiac rehabilitation (CR) is a key intervention for patients with chronic heart disease or recent acute cardiovascular events. In elderly and frail patients, CR aims not only to improve functional capacity but also to maintain or recover independence in daily activities. Hospitalization following an acute event often leads to bed rest, which-even after just 2-3 days-can cause hypokinetic syndrome, characterized by loss of muscle tone, orthostatic hypotension, decreased mobility, and psychological decline, including depression. Moreover, immobility increases thrombotic risk and vascular complications. To mitigate these effects, CR is initiated promptly after clinical stabilization and includes three phases: 1. Phase I - In-hospital rehabilitation 2. Phase II - Early outpatient rehabilitation 3. Phase III - Long-term maintenance Elderly patients are particularly vulnerable to falls due to the combined effects of reduced muscle strength, orthostatic hypotension, cognitive decline, and pre-existing sarcopenia-often exacerbated by acute events and immobility. Approximately 60% of cardiac patients hospitalized for acute events present with moderate-to-high fall risk. Fall risk in this population is multifactorial, involving cardiovascular issues (e.g., arrhythmias, orthostatic hypotension), medication effects, and non-cardiac factors such as vision loss, balance impairment, neuromuscular conditions, and cognitive deficits.

Cardiac rehabilitation is recommended for patients with chronic heart diseases and those who have experienced a recent acute cardiovascular event. Among the main goals of cardiac rehabilitation following an acute event is the recovery of functional capacity or, alternatively-especially in elderly and frail individuals-the maintenance or recovery of autonomy, at least in activities of daily living, within the limits imposed by the cardiac impairment. An acute cardiovascular event requiring hospitalization is often accompanied by a period of varying duration of immobility and bed rest. Bed rest lasting more than 2-3 days may lead to a hypokinetic syndrome characterized by reduced or absent movement autonomy, loss of muscle tone, orthostatic hypotension (deconditioning), and often a decline in mood that may progress to depression. Furthermore, immobility is associated with increased thrombotic risk and consequently a greater chance of vascular complications. To counteract bed rest and its complications, cardiac rehabilitation is initiated as soon as the patient's condition stabilizes and includes three phases: * Phase I rehabilitation (in-hospital) * Phase II rehabilitation (early outpatient) * Phase III rehabilitation (maintenance phase) \[1\]. Loss of muscle mass and tone, orthostatic hypotension, and cognitive impairments all contribute to an increased fall risk in the elderly. It is estimated that approximately 60% of heart disease patients hospitalized for an acute event have a medium-to-high fall risk \[2,3\]. Specifically in cardiac patients, multiple additional factors may contribute to fall risk in this population, including: 1. Cardiovascular conditions: * These may cause sudden reductions in cardiac output and/or inadequate increases in peripheral resistance, resulting in pre-syncope or syncope. * These include: 1. Tachyarrhythmias or bradyarrhythmias (sustained ventricular tachycardia; severe bradycardia; advanced sinoatrial or atrioventricular block). 2. Orthostatic hypotension: Often caused by autonomic dysfunction related to prolonged bed rest and/or use of blood pressure-lowering medications such as vasodilators. Excessive reduction in blood volume from diuretics can also contribute. 2. Non-cardiac conditions: * Cardiac patients, especially older ones, may have reduced vision, balance disorders, cognitive impairments, or neuromuscular disorders that make walking unstable. * Additionally, elderly cardiac patients-particularly those with heart failure-have a high prevalence of sarcopenia. This condition, often present at baseline, may be significantly worsened by the acute clinical event and resulting hypo-/immobility. Study Objectives * Primary objective: To evaluate the effect of cardiac rehabilitation on fall risk in elderly cardiac patients following a recent acute event requiring hospitalization. o We hypothesize that patients completing a supervised rehabilitation cycle will score better on the Conley Scale than those discharged directly home. * Secondary endpoints include: * Effects of rehabilitation on balance in elderly cardiac patients * Effects of rehabilitation on sleep quality, anxiety, and stress levels * The impact of rehabilitation will also be evaluated based on hospital stay duration and total volume of physical training performed

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