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相关概念视频

Pathophysiology of Heart Failure01:17

Pathophysiology of Heart Failure

1.4K
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: β-Blockers01:22

Heart Failure Drugs: β-Blockers

278
β-adrenergic antagonists, commonly known as β-blockers, block the effects of sympathetic neurotransmitters such as noradrenaline (NA) and adrenaline (ADR). They have several beneficial effects in heart failure treatment. They reduce heart rate, the force of contraction, and cardiac muscle relaxation. They also slow the atrial-ventricular conduction rate and raise the threshold for arrhythmias. The concentration of β-blockers determines their effects on bronchodilation,...
278
Heart Failure Drugs: Inhibitors of Renin-Angiotensin System01:26

Heart Failure Drugs: Inhibitors of Renin-Angiotensin System

321
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...
321
Heart Failure Drugs: Inotropic Agents01:26

Heart Failure Drugs: Inotropic Agents

424
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...
424
Heart Failure Drugs: Diuretics01:22

Heart Failure Drugs: Diuretics

294
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...
294
Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers01:19

Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers

38
Cardiac biomarkers are critical in diagnosing, prognosing, and managing cardiovascular diseases. Routine measurement of specific biomarkers such as B-type natriuretic peptide (BNP), C-reactive protein (CRP), and homocysteine (Hcy) is common practice in clinical settings to evaluate heart function and predict cardiovascular events.
These markers indicate stress or strain on the heart muscle:
Natriuretic Peptides (BNP)
Cardiac myocytes produce these hormones in response to ventricular stretching...
38

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相关实验视频

Updated: May 13, 2025

Author Spotlight: Exercise Test for Evaluation of the Functional Efficacy of the Pig Cardiovascular System
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Author Spotlight: Exercise Test for Evaluation of the Functional Efficacy of the Pig Cardiovascular System

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患者报告的结果作为心力衰竭试验的终点

Javed Butler1,2, Muhammad Shariq Usman3,4, Charu Gandotra5

  • 1Baylor Scott and White Research Institute, Baylor Scott and White Health, Dallas, TX (J.B.).

Circulation
|April 14, 2025
PubMed
概括

患者报告的结果对于心力衰竭治疗至关重要,但解释试验结果具有挑战性. 本文讨论了PRO评估和分析的问题,以改善其在研究和临床实践中的使用.

关键词:
美国食品和药物管理局健康状况心脏衰竭患者报告的结果生活质量

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Primary Outcome Assessment in a Pig Model of Acute Myocardial Infarction
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相关实验视频

Last Updated: May 13, 2025

Author Spotlight: Exercise Test for Evaluation of the Functional Efficacy of the Pig Cardiovascular System
02:47

Author Spotlight: Exercise Test for Evaluation of the Functional Efficacy of the Pig Cardiovascular System

Published on: May 12, 2023

1.2K
Primary Outcome Assessment in a Pig Model of Acute Myocardial Infarction
14:19

Primary Outcome Assessment in a Pig Model of Acute Myocardial Infarction

Published on: October 14, 2016

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Author Spotlight: Workflow for Integrating POCUS Data into EHR for Managing Heart Failure Patients
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科学领域:

  • 心脏病学
  • 临床研究
  • 健康问题

背景情况:

  • 心力衰竭影响全球数以百万计的患者,患者报告的结果 (PROs) 与住院和死亡率等传统指标的认识越来越多.
  • 监管机构和专业协会承认PRO,但由于方法不一致,它们在心力衰竭试验中的解释仍然困难.
  • 挑战包括缺乏关于PRO评估时间/频率的共识,以及定义临床重要差异的最小值.

研究的目的:

  • 为了解决心力衰竭临床试验中解读PRO数据的困难.
  • 讨论与PRO评估,临床重要差异和分析方法相关的挑战.
  • 促进PRO在心力衰竭研究,监管评估和临床实践中的有效使用.

主要方法:

  • 深入讨论围绕心力衰竭的PRO评估和分析的问题.
  • 使用堪萨斯市心肌病问卷 (KCCQ) 作为一个具体的例子.
  • 批评传统的分析方法,如平均差异和响应者分析的统计局限性.

主要成果:

  • 目前在心力衰竭试验中评估和分析PRO的方法往往难以解释.
  • 缺乏对PRO评估时间和频率的标准化协议阻碍了数据收集的一致性.
  • 对于PROs来说,确定最小的临床重要差异仍然是一个重大挑战.

结论:

  • 标准化PRO评估和分析对于心力衰竭研究的可靠解释至关重要.
  • 解决方法上的挑战将增强PRO对评估干预和指导临床决策的有用性.
  • 在心力衰竭管理中,提高PRO利用率可以带来更好的以患者为中心的治疗.