Background: Safety in medical work requires eye protection, such as glasses, and protective facial masks (PFM) during clinical practice to prevent viral respiratory infections. The use of facial masks and other full personal protective equipment increases air flow resistance, facial skin temperature and physical discomfort. The aim of the present study was to measure surgeons’ oxygenation status and discomfort before and after their daily routine activities of oral interventions. Methods: 10 male voluntary dentists, specializing in oral surgery, and 10 male voluntary doctors in dentistry, participating in master’s courses in oral surgery in the Department of Oral Surgery of the University of Chieti, with mean age 29 ± 6 (27–35), were enrolled. This study was undertaken to investigate the effects of wearing a PFM on oxygenation status while the oral surgeons were actively working. Disposable sterile one-way surgical paper masks (Surgical Face Mask, Euronda, Italy) and FFP2 (Surgical Face Mask, Euronda, Italy) were used and the mask position covering the nose did not vary during the procedures. The FFP2 was covered by a surgical mask during surgical treatment. A pulse oximeter was used to measure the blood oximetry saturation during the study. Results: In all 20 surgeons wearing FFP2 covered by surgical masks, a reduction in arterial O₂ saturation from around 97.5% before surgery to 94% after surgery was recorded with increase of heart rates. A shortness of breath and light-headedness/headaches were also noted. Conclusions: In conclusion, wearing an FFP2 covered by a surgical mask induces a reduction in circulating O₂ concentrations without clinical relevance, while an increase of heart frequency and a sensation of shortness of breath, light-headedness/headaches were recorded.

中文翻译：

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防护口罩：对口腔外科手术期间氧合作用和心率状态的影响

背景：医疗工作中的安全需要在临床实践中保护眼睛（例如眼镜）和防护面罩（PFM），以防止病毒性呼吸道感染。使用面罩和其他全套个人防护设备会增加空气流动阻力，面部皮肤温度和身体不适。本研究的目的是测量外科医生日常口腔干预活动前后的充氧状态和不适感。方法：在基耶蒂大学口腔外科系参加口腔外科硕士课程的男性专业口腔医学专业牙医为10名，口腔医学专业男性医生为10名，平均年龄为29±6（27–35）岁，已被注册。这项研究旨在调查在口腔外科医生积极工作期间佩戴PFM对氧合状态的影响。使用了一次性无菌单向手术纸面罩（外科面罩，Euronda，意大利）和FFP2（外科面罩，Euronda，意大利），并且覆盖鼻子的面罩位置在手术过程中没有变化。在手术治疗期间，FFP2被手术口罩覆盖。在研究过程中，使用脉搏血氧仪测量血氧饱和度。结果：总共 在研究过程中，使用脉搏血氧仪测量血氧饱和度。结果：总共 在研究过程中，使用脉搏血氧仪测量血氧饱和度。结果：总共记录有20名戴着FFP2并由 手术口罩覆盖的外科医生，随着心率的增加，动脉血O ₂饱和度从手术前的约97.5％降低到手术后的94％。还注意到呼吸急促和头晕/头痛。结论：总而言之，戴着被手术口罩覆盖的FFP2会导致循环血O ₂浓度降低，而无临床意义，同时记录到心跳频率增加和呼吸急促，头晕/头痛的感觉。