Assessment of Lung Injury Based on the Decompression Scheme of Lung Toxicity Dose Unit and K Value.

IF 0.6 4区医学 Q4 MARINE & FRESHWATER BIOLOGY

Undersea and Hyperbaric Medicine Pub Date : 2026-03-01

Li Yifan, Liu Wenwu, Zheng Haoze, Li Chenglong, He Jia, Wang Shifeng

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引用次数: 0

Abstract

Introduction: This study aimed to assess hyperoxic lung injury (HLI) during a heliox dive based on the unit pulmonary toxic dose (UPTD), K index, and equivalent surface oxygen time (ESOT).

Methods: The UPTD, K index, and ESOT values of each schedule in the Helium-Oxygen Decompression Table of China were calculated. Based on the recommended thresholds, the risk of lung injury was analyzed, and suggestions were proposed to modify certain schedules.

Results: The K index and ESOT were more conservative than UPTD in predicting HLI. After a deeper dive, the UPTD, K index, and ESOT values were generally higher than the recommended thresholds. For schedules in which the UPTD, K index, and ESOT values do not exceed the thresholds, we recommend prolonging time on oxygen with or without reducing time on air, or recommending oxygen inhalation after surfacing, which may improve safety without increasing the risk of lung injury. For most schedules, the lung injury may resolve within 12 hours after surfacing, according to the K index.

Discussion: Decompression schedules can be adjusted in real time according to K or ESOT values, which may improve safety while effectively controlling the risk of HLI.

本刊更多论文

基于肺毒性剂量单位和K值减压方案的肺损伤评价。

本研究旨在基于单位肺毒性剂量（UPTD）、K指数和等效表面氧时间（ESOT）来评估螺旋潜水期间的高氧肺损伤（HLI）。方法：计算《中国氦氧减压表》各时间表的UPTD、K指数和ESOT值。在推荐阈值的基础上，分析肺损伤的风险，并提出修改某些时间表的建议。结果：K指数和ESOT对HLI的预测较UPTD保守。经过深入研究，UPTD、K指数和ESOT值通常高于建议的阈值。对于UPTD、K指数和ESOT值未超过阈值的时间表，我们建议延长供氧时间，同时或不减少空气时间，或建议在地表后吸氧，这可能会提高安全性，而不会增加肺损伤的风险。根据K指数，对于大多数时间表，肺损伤可在浮出水面后12小时内消退。讨论：可根据K值或ESOT值实时调整减压时间，在有效控制HLI风险的同时提高安全性。

本文章由计算机程序翻译，如有差异，请以英文原文为准。

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来源期刊

Undersea and Hyperbaric Medicine 医学-海洋与淡水生物学

CiteScore

1.60

自引率

11.10%

发文量

审稿时长

>12 weeks

期刊介绍： Undersea and Hyperbaric Medicine Journal accepts manuscripts for publication that are related to the areas of diving research and physiology, hyperbaric medicine and oxygen therapy, submarine medicine, naval medicine and clinical research related to the above topics. To be considered for UHM scientific papers must deal with significant and new research in an area related to biological, physical and clinical phenomena related to the above environments.