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Pathology – left Ventricular Failure
Left ventricular failure
Definition: A syndrome caused by inadequate left ventricular output.
Epidemiology
• Extremely prevalent. • Occurs in approximately 1% of individuals beyond the age of 75 and 2% after 80 years.
Aetiology
• Ischemic heart disease. • Hypertensive cardiomyopathy. • Aortic or mitral valve pathology. 2 It is important to recognize that all of these are prevalent, and hence LVF frequently results from a combination of two or more of these illnesses.
Pathogenesis
Decreased cardiac output results in a reduction of blood pressure. Hypotension activates baroreceptors and diminishes renal perfusion. • This results in sympathetic overactivity and the stimulation of the renin-angiotensin-aldosterone system. • Blood pressure is reinstated at the cost of elevated heart rate, heightened peripheral vascular resistance (afterload), and augmented blood volume (preload). • Regrettably, this temporary remedy is detrimental in the long term, as it further exacerbates the workload of the heart.
• In reaction, the left ventricle experiences hypertrophy, which diminishes the capacity of the ventricular cavity and decreases the stroke volume. • Ultimately, the heart gets engorged with blood and suffers dilation. Presentation: Dyspnea, tiredness, palpitations. Peripheral edema and ascites typically manifest in advanced stages of the disease.
Macroscopy
• The heart exhibits increased weight, with hypertrophy and dilation of the left ventricle. • Potential underlying causes may be observable, such as coronary artery atherosclerosis or valve disease.
Histopathology
Histology is non-specific, typically exhibiting patchy myocyte enlargement and interstitial fibrosis due to persistent chamber damage.
Prognosis: • Dismal prognosis, with numerous individuals succumbing within three years of diagnosis. • Correlated with diminished quality of life and recurrent hospitalizations. • Lethal ventricular arrhythmias are a prevalent cause of abrupt mortality.
Left ventricular failure
Definition: A syndrome caused by inadequate left ventricular output.
Epidemiology
• Extremely prevalent. • Occurs in approximately 1% of individuals beyond the age of 75 and 2% after 80 years.
Aetiology
• Ischemic heart disease. • Hypertensive cardiomyopathy. • Aortic or mitral valve pathology. 2 It is important to recognize that all of these are prevalent, and hence LVF frequently results from a combination of two or more of these illnesses.
Pathogenesis
Decreased cardiac output results in a reduction of blood pressure. Hypotension activates baroreceptors and diminishes renal perfusion. • This results in sympathetic overactivity and the stimulation of the renin-angiotensin-aldosterone system. • Blood pressure is reinstated at the cost of elevated heart rate, heightened peripheral vascular resistance (afterload), and augmented blood volume (preload). • Regrettably, this temporary remedy is detrimental in the long term, as it further exacerbates the workload of the heart.
• In reaction, the left ventricle experiences hypertrophy, which diminishes the capacity of the ventricular cavity and decreases the stroke volume. • Ultimately, the heart gets engorged with blood and suffers dilation. Presentation: Dyspnea, tiredness, palpitations. Peripheral edema and ascites typically manifest in advanced stages of the disease.
Macroscopy
• The heart exhibits increased weight, with hypertrophy and dilation of the left ventricle. • Potential underlying causes may be observable, such as coronary artery atherosclerosis or valve disease.
Histopathology
Histology is non-specific, typically exhibiting patchy myocyte enlargement and interstitial fibrosis due to persistent chamber damage.
Prognosis: • Dismal prognosis, with numerous individuals succumbing within three years of diagnosis. • Correlated with diminished quality of life and recurrent hospitalizations. • Lethal ventricular arrhythmias are a prevalent cause of abrupt mortality.
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