低トランスバルブラーグラデントと重度の左心室機能不全による重度の大動脈狭窄症:52人の患者で大動脈弁の置換の結果
H M Connolly1, J K Oh, H V Schaff
1Division of Cardiovascular Diseases and Internal Medicine, Mayo Clinic and Mayo Foundation, Rochester, MN 55905, USA.
Circulation
|April 26, 2000
まとめ
重度の左心室機能不全と大動脈狭窄の患者の大動脈弁置換は,機能的状態を改善します. 術後の生存率は,より若い年齢,より大きな義肢サイズ,よりよい機能クラスと関連しています.
科学分野:
- 心臓病学 心臓病学
- 心臓外科手術について
- ハートバルブ疾患 ハートバルブ疾患
背景:
- 低傾斜と左心室機能不全による重度の大動脈狭窄は,複雑な臨床シナリオを提示する.
- この特定の患者群における大動脈弁置換 (AVR) のアウトカムについては,十分に確立されていません.
研究 の 目的:
- 重度の大動脈狭窄症,低トランスバルブラーグラデント,重度の左心室機能不全の患者における大動脈弁置換の結果を評価する.
- この高リスク集団におけるAVR後の死亡率と機能改善の予測要因を特定する.
主な方法:
- 1985年から1995年の間にAVRを受けたエジェクション分数 (EF) <=35%の52人の患者を遡及的に分析した.
- 冠動脈バイパス移植手術は,患者の62%で同時に行われました.
- 単変数および多変数分析を使用して,死亡率と生存率の予測要因を特定しました.
主要な成果:
- 術後の死亡率は21%でした. 高齢と小型の大動脈義肢は,病院での死亡率を予測した.
- 手術による死亡率の唯一の予測要因は,小型の義肢サイズでした.
- 術後の機能改善はほとんどの患者で発生し,74%が改善したEFを示した.
- 改善されたEFは,手術前の大動脈弁の面積と女性の性別が小さくなることと関連していました.
結論:
- 重度の左心室機能不全と低傾斜を有する患者の大動脈弁置換は,手術後の死亡率の増加にもかかわらず,機能的状態を改善します.
- 術後の生存率は,より若い患者年齢とより大きな大動脈義肢サイズに関連しています.
- 中期生存率は,手術後の機能的クラスの改善によって肯定的に影響されます.
さらに関連する動画
関連する概念動画
Mitral Stenosis I: Introduction
1.8K
Mitral Valve Stenosis (MVS) is a heart condition where the mitral valve narrows, impeding blood circulation from the left atrium to the left ventricle. The etiology and pathophysiology of this condition are multifaceted, leading to a cascade of cardiovascular complications.Causes of Mitral Valve StenosisRheumatic Heart Disease: It is the main cause of mitral valve stenosis, particularly in developing nations. This condition arises from rheumatic fever, an inflammatory illness resulting from...
1.8K
Mitral Stenosis II: Clinical features and Diagnostic Tests
564
Mitral stenosis is a heart condition in which the mitral valve, which allows blood to flow from the left atrium to the left ventricle, becomes narrowed or stenotic. This narrowing hinders blood flow and leads to clinical symptoms requiring specific medical evaluations and management strategies. The following overview outlines the clinical symptoms, assessments, diagnostic findings, prevention methods, and treatments for mitral stenosis.Clinical ManifestationsDyspnea (shortness of breath): This...
564
Mitral Stenosis III: Medical Management
538
Mitral stenosis, a condition marked by the narrowing of the mitral valve, necessitates an integrated approach for effective management. This approach includes preventative measures, medical therapy, and surgical interventions to reduce symptoms and prevent complications.PreventionPrevention of mitral stenosis primarily focuses on reducing the incidence of bacterial infections, particularly streptococcal infections, which can lead to rheumatic fever and subsequent valvular damage. Timely...
538
Aortic Regurgitation I: Introduction
1.6K
IntroductionAortic regurgitation is characterized by the backward flow of blood from the aorta into the left ventricle during diastole and arises from the improper closure of the aortic valve. This condition results in left ventricular volume overload and can stem from both acute and chronic etiologies, each contributing uniquely to the disease's progression and symptomatology.Acute and Chronic CausesAcute aortic regurgitation often results from events that suddenly impair the integrity of the...
1.6K
Aortic Regurgitation II: Clinical Features and Diagnostic Tests
1.2K
Aortic valve regurgitation (AR) occurs when the aortic valve fails to close properly, allowing blood to flow backward from the aorta into the left ventricle. This backflow can result in two distinct clinical presentations: acute and chronic AR, each characterized by its own set of symptoms and physical findings.Acute Aortic RegurgitationAcute AR presents with a sudden onset of severe symptoms. Patients typically experience profound dyspnea (shortness of breath), chest pain, and signs of left...
1.2K
Aortic Regurgitation III: Medical Management
598
Aortic regurgitation (AR) is when the aortic valve does not close or seal properly, leading to backward blood circulation from the aorta into the left ventricle during diastole. Common causes of AR include rheumatic heart disease, congenital valve defects, and aortic root dilation. Managing AR requires a multifaceted approach to alleviate symptoms, preserve left ventricular function, and address the underlying cause of the regurgitation. Patients with symptomatic AR or significant left...
598


