相关实验视频
Updated: Jun 30, 2026

05:39
Non-Intubated Video-Assisted Thoracoscopic Surgery
Published on: May 26, 2023
高空空腔肺息的性能:中期结果和失败的风险因素
Sunil P Malhotra1, D Dunbar Ivy, Max B Mitchell
1Department of Cardiothoracic Surgery, Stanford University, Stanford, CA 94305, USA. spmalhotramd@yahoo.com
Circulation
|October 10, 2008
概括
居住在高海拔地区对接受空腔肺息治疗的单心室患者构成风险. 潜在衰竭的关键指标包括肺动脉压力升高和跨肺梯度,需要对这些患者进行仔细监测.
科学领域:
- 儿童心脏病学 儿童心脏病学
- 遗传性心脏病是一种先天性心脏病.
- 手术减轻伤害的治疗方法
背景情况:
- 单心室生理学需要复杂的手术息,如空腔肺连接.
- 生活在高海拔地区可能会影响由于肺循环对血管抵抗的依赖而导致的结果.
- 确定高度特异性风险因素对于改善患者管理至关重要.
研究的目的:
- 在居住在高海拔地区的患者中识别空腔肺息失败的危险因素.
- 为了评估海拔高度对双向格伦 (BDG) 和丰坦程序后结果的影响.
主要方法:
- 对122名生活在平均海拔1600米的患者进行了回顾性分析,这些患者在1995年至2007年期间接受了BDG.
- 评估手术前后的肺动脉压力 (PAP),跨肺梯度 (TPG) 和指数化肺血管阻力 (PVRI).
- 评估生存,免于息失败和功能状态 (纽约心脏协会课程).
主要成果:
- 在BDG治疗后的整体存活率在5年后为92.4%,其中81%没有息失败.
- 患有息失败的患者在BDG前后显著增加了PAP和TPG.
- 较高的BDG后PVRI也与息失败有关 (P=0.007).
结论:
- 大多数在中等海拔地区的患者经历了BDG或Fontan息的良好结果.
- 升高的PAP (>15 mm Hg),TPG (>8 mm Hg) 和PVRI (>2.5木材U·m2) 是高度息失败的重要危险因素.
- 这些发现强调了监测单心室患者居住在较高海拔地区的血液动力学参数的重要性.
相关概念视频
Acute Respiratory Failure-III
Hypercapnic respiratory failure, also known as Type 2 or ventilatory respiratory failure, is a severe condition characterized by the body's inability to effectively remove carbon dioxide (CO2) from the bloodstream. It leads to an arterial CO2 pressure (PaCO2) exceeding 45 mmHg and a blood pH above 7.35. This situation indicates that the body's ventilatory demand, or the ventilation needed to maintain normal PaCO2 levels, surpasses its supply or the maximum gas flow achievable without causing...
Atelectasis II: Pathophysiology
Atelectasis develops when alveoli lose their air and collapse inward. Because lung tissue is naturally elastic, these air sacs shrink rather than remaining open. Collapsed alveoli are no longer ventilated, reducing their role in gas exchange. Blood flow may continue in these regions, creating a ventilation–perfusion mismatch. Clinical findings include decreased breath sounds, dullness to percussion, reduced chest expansion, and decreased tactile fremitus as sound transmission through collapsed...
Acute Respiratory Failure-II
Type I Respiratory Failure, or hypoxemic respiratory failure, occurs when the partial pressure of oxygen (PaO2) in arterial blood falls below 60 mmHg while breathing room air without a corresponding increase in arterial carbon dioxide levels (PaCO2). This condition highlights a significant impairment in the lungs' capacity to oxygenate the blood.
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:
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...
Cardiopulmonary Resuscitation II: ACLS Airway Management
Airway management is a key skill in emergency and critical care settings, as maintaining a clear airway is essential for adequate oxygenation and ventilation.Head Tilt-Chin Lift TechniqueThe head tilt-chin lift maneuver is an essential technique primarily used in patients without suspected cervical spine injuries. To perform this maneuver, one hand is placed on the patient’s forehead, and gentle pressure is applied backward to tilt the head. The fingertips of the other hand are positioned under...
Factors Affecting Pulmonary Ventilation
Besides the pressure difference between the external environment and the lungs, the airflow rate and ease of pulmonary ventilation are also influenced by three other factors: surface tension of the fluid in the alveoli, compliance of the lungs, and airway resistance.
Alveolar Surface Tension
The alveolar fluid lines the luminal surface of the alveoli and exerts a force called surface tension. This force is caused by the polar water molecules in the liquid being more strongly attracted to each...
Alveolar Surface Tension
The alveolar fluid lines the luminal surface of the alveoli and exerts a force called surface tension. This force is caused by the polar water molecules in the liquid being more strongly attracted to each...