Alcoholic Cardiomyopathy: Causes, Symptoms, and Diagnosis
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It is unknown whether individual susceptibility would be related to increased vulnerability at the myocardial level and/or to impaired alcohol metabolism. Myocardial impairment following chronic excessive alcohol intake has been evaluated using echocardiographic and haemodynamic measurements in a significant number of reports. In these studies, haemodynamic and echocardiographic parameters were measured in individuals starting an alcohol withdrawal program. Associated DataIt’s very important to stick with the treatment plan and to stop drinking alcohol during recovery. Alcohol abuse has a toxic effect on many of your organs, including the heart. When it can’t pump out enough blood, the heart starts to expand to hold the extra blood. Eventually, the heart muscle and blood vessels may stop functioning properly due to the damage and strain. To maintain abstinence, recent investigations suggest the benefits of adjuvant medications, e. To treat the alcohol problem, a combined approach comprising pharmacologic and psychosocial therapy involving self-help groups or Alcoholics Anonymous is essential.
Echocardiographic and haemodynamic studies in alcoholicsAdditionally, the accepted ACM definition does not take into account a patient’s sex or body mass index (BMI). As women typically have a lower BMI than men, a similar amount of alcohol would reach a woman’s heart after consuming smaller quantities of alcohol. Data on the amount of alcohol consumption required to cause ACM are limited and controversial. In addition to the assessment of the status of the coronary arteries, cardiac catheterization may help obtain useful information regarding cardiac output, the degree of aortic or mitral valvular disease, and cardiac hemodynamics and filling pressures. Importantly however, remember that much of this information can be derived or inferred from the results of noninvasive testing. Richardson et al showed an elevation of creatine kinase, LDH, malic dehydrogenase, and alpha-hydroxybutyric dehydrogenase levels in endomyocardial biopsy specimens taken from 38 patients with DC. Short-Term Side Effects of Alcoholic CardiomyopathyThus, Nicolás et al[73] studied the evolution of the ejection fraction in 55 patients with ACM according to their degree of withdrawal. The population was divided into 3 groups according to their intake volume during the follow-up period. At the end of the first year, no differences alcoholic cardiomyopathy symptoms were found among the non-drinkers, who improved by 13.1%, and among those who reduced consumption to g/d (with an average improvement of 12.2%). Conversely, those whose consumption remained in excess of 80 g/d showed an average decline of 3.8% in their ejection fraction. LIMITATIONS OF ACM STUDIESContinued heavy alcohol use, on the other hand, will continue to make alcoholic cardiomyopathy worse. Frequently, a relative decrease occurs in systolic blood pressure because of reduced cardiac output and increased diastolic blood pressure due to peripheral vasoconstriction, resulting in a decrease in the pulse pressure. Acute can be defined as large volume acute consumption of alcohol promotes myocardial inflammation leading to increased troponin concentration in serum, tachyarrhythmias including atrial fibrillation and rarely ventricular fibrillation. ACM is a type of heart disease that develops due to chronic alcohol consumption.
For many decades, ACM has been considered one of the main causes of left ventricular dysfunction in developed countries. Specifically in the United States, ACM was declared the leading cause of non-ischemic DCM[7]; a fact related to the high consumption of alcoholic beverages worldwide, which is particularly elevated in Western countries[26] . The diagnosis of ACM is usually one of exclusion in a patient with DCM with no identified cause and https://ecosoberhouse.com/ a long history of heavy alcohol abuse. According to most studies, the alcohol consumption required to establish a diagnosis of ACM is over 80 g per day during at least 5 years[9-12]. Since myocardium requires a high energy supply to maintain persistent sarcomere contractions, it was supposed that alcohol could exert its damaging effect on the mitochondrial energy supply system, with the disruption of oxidative control mechanisms [26,100]. 1. The Natural Course of ACMThe pathologic and histologic findings of alcoholic cardiomyopathy (AC) are essentially indistinguishable from those of other forms of dilated cardiomyopathy (DC). Findings from gross examination include an enlarged heart with 4-chamber dilatation and overall increased cardiac mass. Histologically, light microscopy reveals interstitial fibrosis (a finding that has been shown to be prevented by zinc supplementation in the mouse model), myocyte necrosis with hypertrophy of other myocytes, and evidence of inflammation. Dilated cardiomyopathy
No changes in heart weight-to-body weight ratios were found, however the myocardium from ethanol-treated animals showed fibrosis, and an irregular, disorganized myocyte pattern. All of these latter changes were prevented by the administration of either Valsartan (angiotensin II receptor blocker, 5mg/kg/d) or carnitine (antioxidant, 2 g/d), suggesting a role for angiotensin II and oxidative stress (30). In addition, there was also no evidence of nitrative damage in transgenic mice with knockout of the angiotensin I receptor (AT1-KO) fed ethanol for a similar amount of time (43). In these studies there was also evidence of ethanol-induced collagen and fibronectin accumulation, apoptotic cell death and ventricular remodeling, all of which were blocked with the administration of the superoxide dismutase mimetic or not present in the AT1-KO ethanol-fed group (43). The term alcoholic cardiomyopathy (ACM) has been widely used to describe a specific heart muscle disease found in individuals with a history of long-term heavy alcohol (ethanol) consumption. Data from human and animal studies have revealed that within the myocardium, a number of adverse histological, cellular, and structural changes occur in response to and over the course of long-term heavy alcohol consumption. 4. The dose-Related Effect of Ethanol and Beverage Types on the Heart |
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掲載・更新日 | 2024年10月3日 |