术后观察到的和预测的1秒内强制呼气量,强制生命能力和解剖肺切除后一氧化碳扩散能力之间的一致性
Euan Lim1, Karim Seif1, Theo Goetz1
1St Paul's School, London, UK.
Journal of thoracic disease
|February 27, 2024
概括
切除后预测的肺功能损失往往高估了FEV1和FVC的实际损失. 一氧化碳的扩散能力 (DLCO) 显示出良好的协议,支持肺切除计划的20个细分模型.
科学领域:
- 肺部医学 肺部医学
- 胸部外科手术 胸部外科手术
- 呼吸系统生理学 呼吸系统生理学
背景情况:
- 评估预测的肺功能损失对于临床决策和试验至关重要.
- 之前的研究表明,切除术后肺功能损失的意外发现.
- 了解预测和观察到的肺功能之间的一致性至关重要.
研究的目的:
- 评估在解剖肺切除后预测和观察到的肺功能损失之间的一致性.
- 评估20段计数方法在预测术后肺功能方面的准确性.
主要方法:
- 对158名接受了解剖肺切除的患者进行了回顾性分析.
- 收集的手术前和手术后的每秒强制呼吸量 (FEV1),强制生命能力 (FVC) 和一氧化碳扩散能力 (DLCO).
- 使用Bland和Altman方法和散射图来评估一致性,将>5%的偏差定义为临床显著.
主要成果:
- 取决于努力的测量 (FEV1,FVC) 倾向于低估肺功能损失 (观察到的值高于预测).
- 一氧化碳 (DLCO) 扩散能力显示预测值和观察值之间很好地一致.
- 平均差异:FEV1 -9.84%,FVC -11.39%,DLCO -4.83%. 这是一个很大的差异.
结论:
- 预测的FEV1和FVC可能会高估肺功能损失,因此在评估外科手术适用性时需要谨慎.
- DLCO表现出很好的一致性,这表明20段模型在预测肺组织损失方面是一致的.
- 肺切除的临床指南应考虑预测的肺功能测量中的差异.
相关概念视频
Respiratory Capacities
812
Respiratory capacities are crucial indicators of lung function, representing the maximum amount of air an individual's respiratory system can handle during various breathing phases.
One key metric is the Inspiratory Capacity (IC), which represents the maximum amount of air that can be inhaled with full effort. IC is calculated by summing the tidal volume and inspiratory reserve volume, typically ranging from 2.4 to 3.6 liters.
The Functional Residual Capacity (FRC) represents the air in the...
One key metric is the Inspiratory Capacity (IC), which represents the maximum amount of air that can be inhaled with full effort. IC is calculated by summing the tidal volume and inspiratory reserve volume, typically ranging from 2.4 to 3.6 liters.
The Functional Residual Capacity (FRC) represents the air in the...
812
Respiratory Volumes and Capacities
2.0K
The respiratory system is responsible for the intake of oxygen and the expulsion of carbon dioxide from the body. Respiratory volumes describe the volume of air in the lungs at different phases of the respiratory cycle. Tidal volume is the air breathed in and out during normal, quiet breathing. Inspiratory reserve volume is the air that can be forcefully inspired beyond the tidal volume. In contrast, expiratory reserve volume refers to the air that can be expelled from the lungs after a normal...
2.0K
Respiratory Volumes
1.5K
Respiratory volumes are crucial metrics, meticulously measured to quantify the air exchanged in and out of the lungs during various phases of the breathing cycle. These precise measurements are vital for assessing lung function, diagnosing respiratory conditions, and monitoring overall respiratory health. Each parameter provides specific insights into the mechanics of breathing and the functional capacity of the lungs.
Tidal Volume (TV) Tidal volume (TV) is the air inhaled or exhaled in a...
Tidal Volume (TV) Tidal volume (TV) is the air inhaled or exhaled in a...
1.5K
Lung Capacity
50.3K
The air in the lungs is measured in volumes and capacities. Lung volume measures reflect the amount of air taken in, released, or left over after a lung function, like a single inhalation. Lung capacity measures are sums of two or more lung volume measures.
50.3K
Assessment of Diffusion and Perfusion
979
Understanding and evaluating diffusion and perfusion is critical in assessing a patient's respiratory and circulatory health. These processes play key roles in maintaining the body's internal environment, ensuring that tissues receive adequate oxygen while waste products are efficiently removed.
The Role of Diffusion in Respiration
Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. In the respiratory system, this...
The Role of Diffusion in Respiration
Diffusion is the process by which molecules move from an area of higher concentration to an area of lower concentration. In the respiratory system, this...
979
Chronic Obstructive Pulmonary Disease-IV: Assessement and Diagnostic Studies
2.5K
Assessing and diagnosing Chronic Obstructive Pulmonary Disease (COPD) involves a detailed approach that includes a comprehensive review of medical history, physical examination, and a variety of diagnostic tests. This thorough evaluation is essential to ensure an accurate diagnosis and guide effective management strategies.
Medical History
Medical History
2.5K


