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Pathophysiology of Heart Failure01:17

Pathophysiology of Heart Failure

1.5K
Heart failure (HF) is a progressive syndrome involving ventricles that leads to inadequate cardiac output. It can be classified based on location and output or ejection fraction. Ejection fraction (EF) is an essential measurement in the diagnosis and surveillance of HF. Reduced EF corresponds to systolic heart failure (HFrEF). However, HF with preserved ejection fraction (HFpEF) is becoming increasingly prevalent. Also known as diastolic HF, this form of HF is related to aging. The...
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Heart Failure Drugs: Inotropic Agents01:26

Heart Failure Drugs: Inotropic Agents

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Positive inotropic agents are commonly used as the first line of treatment for heart failure. One such agent is digoxin, derived from the genus Digitalis, which has been known for centuries but effectively utilized since 1785. However, these cardiac glycosides can have potentially toxic effects due to their mechanism of action, which involves inhibiting Na+/K+-ATPase and increasing contractility. Digoxin is absorbed orally and distributed in various tissues, including the CNS. It has a long...
555
Heart Failure Drugs: Inhibitors of Renin-Angiotensin System01:26

Heart Failure Drugs: Inhibitors of Renin-Angiotensin System

413
The activation of the sympathetic nervous system and the renin-angiotensin-aldosterone system (RAAS) contributes to cardiac remodeling, and inhibiting the RAAS is a pharmacological target in heart failure management. As a result, neurohumoral modulation is a crucial treatment principle for managing heart failure. This approach involves using medications like ACE inhibitors (ACEIs), angiotensin receptor blockers (ARBs), β-blockers, mineralocorticoid receptor antagonists (MRAs), and neutral...
413
Heart Failure Drugs: Diuretics01:22

Heart Failure Drugs: Diuretics

355
Heart failure and kidney perfusion are interconnected in a complex way. Reduced renal perfusion and venous congestion are two significant factors that contribute to renal dysfunction in heart failure. The kidneys, primarily responsible for fluid balance in the body, are adversely affected due to compromised cardiac output and increased venous pressure. In response to reduced renal perfusion, the kidneys activate neurohumoral mechanisms to restore balance. However, these mechanisms can be...
355
Imbalances in Cardiac Output01:26

Imbalances in Cardiac Output

1.4K
The heart's primary function is to pump blood throughout the body, maintaining a balance between blood sent out (cardiac output) and blood returning (venous return). If this balance is disrupted, it can result in congestive heart failure (CHF), a severe condition where the heart becomes an inefficient pump, leading to inadequate blood circulation.
CHF can occur due to the failure of either side of the heart. Left-side failure leads to pulmonary congestion—the right side continues to send...
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Cell-mediated Immune Responses01:40

Cell-mediated Immune Responses

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Overview
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An Immunological Model for Heterotopic Heart and Cardiac Muscle Cell Transplantation in Rats
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免疫缺陷性淋巴细胞病变伪装成心力衰竭

Kabeer Ali1, Avni Agrawal1, Abhinav Karan1

  • 1Internal Medicine, University of Florida College of Medicine, Jacksonville, USA.

Cureus
|August 2, 2024
PubMed
概括

免疫性球瘤病 (ITG) 是一种罕见的病,导致预后不佳. 这一案例突显了ITG在年轻男性中呈现异常,最初模仿心力衰竭.

关键词:
纤维状球膜病变 - 纤维状球膜病变免疫性毒素的免疫性毒素.免疫缺陷性淋巴细胞病变是一种免疫缺陷性淋巴细胞病变 (immunotactoid glomerulopathy).轻链沉积病是一种轻链沉积病.触状体的身体是形体.

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科学领域:

  • 腎臟病學 (nephrology) 是一種醫學專業.
  • 免疫病理学 免疫病理学

背景情况:

  • 免疫性质球体病变 (ITG) 是一种罕见的球体球体病.
  • 它的特点是质细胞中有组织的,密集的免疫球蛋白沉积物,导致功能受损.
  • 通常与预后不佳和进展到末期病 (ESRD) 相关.

研究的目的:

  • 在一个没有先前病史的年轻男性中呈现ITG的独特病例.
  • 为了说明ITG呈现异常症状的诊断挑战.

主要方法:

  • 案例报告的呈现方式.
  • 临床评估包括对anasarca和心脏功能的评估.
  • 由显著的蛋白尿引起的诊断工作.

主要成果:

  • 一个年轻的男性呈现了anasarca,最初怀疑是心力衰竭.
  • 显著的蛋白尿引起了进一步的调查,导致ITG的诊断.
  • 这一案例强调了在无法解释的功能障碍中考虑ITG的重要性.

结论:

  • ITG可以呈现非特异性症状,可能模仿其他疾病,如心力衰竭.
  • 早期和彻底的诊断评估对于识别ITG至关重要.
  • 这个案例扩大了对ITG多样化的临床表现的理解.