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Myocarditis III: Medical Management01:14

Myocarditis III: Medical Management

13
Myocarditis: Comprehensive Medical ManagementMyocarditis, the heart muscle inflammation, requires a comprehensive medical management strategy that addresses the underlying cause, provides supportive care, manages symptoms, and reduces cardiac workload.Infections and Autoimmune CausesAdminister appropriate antimicrobial therapy when an infectious agent causes myocarditis. For instance, penicillin treats infections caused by Group A Streptococcus. In cases where autoimmune processes are...
13
Myocarditis II: Clinical Features and Diagnostic Tests01:27

Myocarditis II: Clinical Features and Diagnostic Tests

18
Myocarditis is an inflammation of the heart muscle. The symptoms vary widely, encompassing asymptomatic presentations to severe, acute manifestations.Clinical PresentationAsymptomatic cases: In some instances, myocarditis may be asymptomatic, with the infection resolving without intervention. These cases often go undetected unless discovered incidentally through diagnostic imaging or tests conducted for other reasons.General Early Symptoms: Early symptoms of myocarditis are non-specific and can...
18
Acute Coronary Syndrome I: Introduction01:30

Acute Coronary Syndrome I: Introduction

51
Acute Coronary Syndrome (ACS) encompasses a spectrum of heart conditions caused by sudden obstruction of coronary arteries, typically resulting from the rupture of an atherosclerotic plaque and subsequent thrombus (blood clot) formation. This obstruction can lead to partial or complete blockage of blood flow, causing varying degrees of myocardial ischemia or infarction.ACS includes the following clinical entities:Unstable Angina (UA)Non-ST-Elevation Myocardial Infarction (NSTEMI)ST-Elevation...
51
Myocarditis I: Introduction01:21

Myocarditis I: Introduction

18
Myocarditis is inflammation of the myocardium, which is the muscular layer of the heart.EtiologyMyocarditis has a diverse etiology, including a wide range of infectious and non-infectious causes:Infectious CausesViral: Common viruses include Coxsackie A and B, adenovirus, parvovirus B19, enteroviruses, and influenza A.Bacterial: Examples include infections caused by Streptococcus, Staphylococcus, and Mycoplasma species.Rickettsial: Infections like Rocky Mountain spotted fever can result in...
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Blood Studies for Cardiovascular System I: Cardiac Biomarkers01:20

Blood Studies for Cardiovascular System I: Cardiac Biomarkers

226
Cardiac biomarkers are enzymes, proteins, and hormones released into the blood when cardiac cells are injured. They are powerful tools for triaging.
The essential diagnostic tools for detecting myocardial necrosis and monitoring individuals suspected of having acute coronary syndrome (ACS) include:
Troponins
Troponins, particularly cardiac troponins I and T, are the most precise and sensitive markers of myocardial injury. They are detectable within 4-6 hours of myocardial injury and remain...
226
Myocarditis IV: Nursing Management01:22

Myocarditis IV: Nursing Management

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Myocarditis is an inflammatory condition of the myocardium requiring meticulous nursing management for optimal patient outcomes. Effective management begins with a thorough assessment of the patient's medical history, paying close attention to past infections, autoimmune disorders, travel history, and exposure to toxins or drugs. Recent viral infections and systemic diseases are particularly relevant due to their potential role in triggering myocarditis.Physical Examination and MonitoringThe...
17

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トロポニン値上昇によるCOVID-19入院後の心筋梗塞:将来性,多センター,観察研究

Jessica Artico1, Hunain Shiwani1, James C Moon1

  • 1Institute of Cardiovascular Science (J.A., H.S., J.C.M., R.D.A., C.M., T.A.T., R.H.D.), University College London, UK.

Circulation
|January 27, 2023
PubMed
まとめ

COVID-19の患者およびトロポニンのレベルが上昇した患者は,心室障害および心筋の傷痕を含む心臓異常が増加しています. 心筋の傷跡は 主要な心血管疾患を 独立して予測します

キーワード:
コロナウイルス心血管疾患コロナウイルス磁気共鳴画像検査心筋梗塞トロポニン

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科学分野:

  • 心臓病科
  • 感染症
  • 医療用イメージング

背景:

  • COVID-19患者の急性心筋損傷は,不良の結果と関連しています.
  • この傷の正確な原因と関連性は不明である.
  • この研究では,高濃度のトロポニンを患った入院したCOVID-19患者の心筋損傷を調査しています.

研究 の 目的:

  • 心筋損傷の存在,性質,程度を評価する.
  • COVID-19患者の主要な有害心血管疾患の予測要因を特定する.

主な方法:

  • トロポニン (COVID+/トロポニン+) が上昇した342人のCOVID-19患者はMRI検査を受けた.
  • 2つの対照群が使用された.正常なトロポニンを持つCOVID-19 (COVID+/トロポニン-) と,併発性のある非COVID-19 (COVID-/併発性+).
  • 12ヶ月の主要な不良心血管疾患の予測要因を特定した.

主要な成果:

  • COVID+/トロポニン+患者は,対照群 (36%と31%) と比べて,心臓異常率が著しく高かった.
  • COVID+/トロポニン+患者では,心室機能障害と心筋痕がより一般的であった.
  • 前回のCOVID-19またはトロポニンレベルではなく,独立して主要な有害心血管疾患を予測した (OR2.25).

結論:

  • トロポニンの値が上昇したCOVID-19患者では,心室機能障害と心筋痕が増加している.
  • 研究では,微小心筋梗塞を含む多種多様な病原性を特定した.
  • これらの患者の心筋痕は将来の心血管疾患の有意な予測因子です.