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Updated: Jun 29, 2026

10:08
Tachycardia-Induced Cardiomyopathy As a Chronic Heart Failure Model in Swine
Published on: February 17, 2018
慢性心不全における通行用酸素
L J Restrick1, S W Davies, L Noone
1Department of Thoracic Medicine, London Chest Hospital, UK.
Lancet (London, England)
|November 14, 1992
まとめ
歩行用酸素療法は,慢性心不全患者の歩行距離を改善したり,呼吸困難を軽減したりしませんでした. これらの患者は,運動中に現在の酸素シリンダーを使用することは推奨されません.
科学分野:
- 心臓病学 心臓病学
- 肺内医学 肺内医学 肺内医学
- 運動生理学 運動生理学
背景:
- 慢性心不全 (CHF) は,運動不耐性に関連しています.
- 歩行酸素療法は,運動中に時々使用されますが,歩行中のCHF患者での有効性はよく確立されていません.
- 酸素飽和度 (SaO2) は,しばしば運動中に低下します.
研究 の 目的:
- 慢性心不全患者の歩行テスト中に運動能力とガス交換に対する外来酸素療法の効果を評価する.
- 補足酸素がSaO2,歩行距離,またはサブマキシマムと耐久歩行中の呼吸困難感を改善するかどうかを判断する.
主な方法:
- 慢性心不全の12人の患者は,6分歩行テストと耐久歩行を行った.
- 測定には静止状態と運動中の動脈酸素飽和度 (SaO2) ,歩行距離,呼吸困難などが含まれていた.
- テストは,周囲の空気を呼吸し,携帯シリンダーで送られる補充酸素 (2L/分と4L/分) を使って実施した.
主要な成果:
- 6分間の散歩で,SaO2は,休息 (94.4%) から運動 (90.1%) まで,空気吸入時に大幅に減少しました.
- 2L/minの補充酸素は,休息時のSaO2 (93.7%から96.5%) を増加させましたが,運動のSaO2,距離,または呼吸困難には影響しませんでした.
- 耐久歩行中に4L/minの酸素は最低のSaO2 (90.4%から93.5%) を増加させたが,呼吸困難や距離を改善しなかった.
結論:
- 現在利用可能なポータブル・シリンダーを使用した外出式酸素療法では,歩行中の慢性心不全患者の運動能力を向上させたり,呼吸困難を軽減したりしません.
- この発見は,運動テスト中にCHFの患者を対象に,ランニング用酸素を日常的に使用することを支持するものではありません.
- 最適な酸素配送方法や,心臓発作の患者さんを ambulatory oxygen therapy に選択するために,さらなる研究が必要になる可能性があります.
関連する概念動画
Imbalances in Cardiac Output
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 blood...
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 blood...
Treatment for Pulmonary Arterial Hypertension: Oxygen Therapy for Respiratory Failure
Oxygen therapy has emerged as a significant tool in enhancing the quality of life for patients suffering from pulmonary arterial hypertension (PAH). While this therapy has principally been studied on patients with significant hypoxemia, this therapeutic approach helps prevent potential organ damage and can be administered in the comfort of one's home.
Oxygen therapy is vital in increasing and maintaining blood oxygen levels in PAH patients. As a result, it aids in reducing fatigue, improving...
Oxygen therapy is vital in increasing and maintaining blood oxygen levels in PAH patients. As a result, it aids in reducing fatigue, improving...
Acute Respiratory Failure-IV
Respiratory failure can manifest suddenly or gradually, characterized by a rapid decline in PaO2 and a rapid rise in PaCO2. This situation indicates a severe respiratory problem that may quickly become a life-threatening emergency. One of the early signs of hypoxemic Acute Respiratory Failure (ARF) is a change in mental status due to the brain's sensitivity to oxygen levels and changes in acid-base balance. Symptoms such as restlessness, confusion, and agitation suggest inadequate oxygen...
Pneumothorax-I
A pneumothorax is a condition where air builds up in the space between the lung and the chest wall, causing the lung to collapse. This condition arises when air enters the space between the parietal and visceral pleura, disrupting the negative pressure essential for lung inflation. This can lead to a partial or complete collapse of the lung.
Pneumothorax can be even further classified as spontaneous, traumatic, and tension pneumothorax.
Pneumothorax can be even further classified as spontaneous, traumatic, and tension pneumothorax.
Heart Failure V: Medical Management
Medical Management of Acute Decompensated Heart Failure (ADHF)The primary goals of therapy for patients hospitalized with acute decompensated heart failure (ADHF) include:Relieving symptomsOptimizing volume statusSupporting oxygenation and ventilationMaintaining cardiac output (CO) and end-organ perfusionIdentifying and addressing the cause of ADHFPreventing complicationsProviding patient education on factors precipitating HF exacerbationPlanning for dischargeOngoing monitoring and assessment...
Heart Failure VI: Adjunct Therapies
Additional therapies for treating patients with heart failure (HF) may include procedural interventions, supplemental oxygen, the management of sleep disorders, and nutritional therapy.Procedural InterventionsImplantable Cardioverter-Defibrillator: For patients at risk of life-threatening arrhythmias due to severe left ventricular dysfunction, an Implantable Cardioverter-Defibrillator (ICD) can detect and terminate these arrhythmias, preventing sudden cardiac death and improving survival rates.

