Segadal K, Gulsvik A, Nicolaysen G
Norwegian Underwater Technology Centre A/S.
Eur Respir J. 1990 Jan;3(1):101-8.
Deep diving refers to saturation diving to a depth of more than 180 m (1.9 MPa ambient pressure). In the 1990s diving to 400 m may be necessary on the Norwegian continental shelf. The safety margins are narrow and the respiratory system is subject to great strain at such depths. The respiratory resistance increases and the dynamic lung volumes are reduced as the pressure increases due to enhanced gas density. Helium is used together with oxygen as breathing gas and its lower density partly normalises the dynamic lung volumes. The respiratory system puts clear limitations on intensity and duration of physical work in deep diving. Systematic studies of lung mechanics, gas exchange and respiratory regulation in the different phases of deep dives are lacking. Detection of occupational respiratory disorder following diving are dependent on long-term follow-up.
深潜是指饱和潜水至深度超过180米（环境压力1.9兆帕）。在20世纪90年代，挪威大陆架上可能需要潜至400米。安全边际很窄，在这样的深度下呼吸系统承受着巨大压力。随着压力因气体密度增加而升高，呼吸阻力增大，动态肺容量减小。氦气与氧气一起用作呼吸气体，其较低的密度部分地使动态肺容量恢复正常。呼吸系统对深潜中体力劳动的强度和持续时间施加了明显限制。目前缺乏对深潜不同阶段肺力学、气体交换和呼吸调节的系统研究。潜水后职业性呼吸系统疾病的检测依赖于长期随访。
