Optical method for measurement of respiration rate

机译：光学方法测量呼吸频率

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Standard instrumentation for the assessment of the respiration rate is largely used in medicine. Spirometers, textile-based capacitive sensors or photopletismography are all contact devices used for such aim; the main drawback in their use is the necessity to have a direct contact between the instrument and the patient, which in some cases can limit the use of such devices. In this paper, we present an optical, fully no-contact measurement method for monitoring of the respiration rate, based on the assessment of chest wall movements (velocity and displacement) by a laser Doppler vibrometer (LDVi). The proposed method is operated at a distance of 1.5 m, on different point of the patient thoracic and abdominal area. The measurement procedure was already demonstrated to precisely perform for what concern the monitoring of the cardiac activity. In this paper, we have monitored 33 patients with a reference instrument (spirometer) and with the proposed non-contact method. Statistical analysis (Bland-Altman) of the respiration rate measured with both instruments is reported. We also report a study on the optimal position on the thoracic area based on quality of the signal measured on the same population of subject. Results demonstrate the possibility to continuously monitor the respiration rate with a mean difference respect to the spirometer data of 13 m ( relative error: 0.35%).

机译：用于评估呼吸频率的标准仪器主要用于医学中。肺活量计，基于纺织品的电容式传感器或光电勒仪都是用于此目的的接触设备。使用它们的主要缺点是必须在器械和患者之间进行直接接触，这在某些情况下会限制此类设备的使用。在本文中，我们基于激光多普勒振动计（LDVi）对胸壁运动（速度和位移）的评估，提出了一种用于监测呼吸频率的光学，完全无接触的测量方法。所提出的方法在患者胸部和腹部区域的不同点以1.5 m的距离进行操作。已经证明了该测量程序可以精确地执行关于心脏活动的监测。在本文中，我们使用参考仪器（肺活量计）和建议的非接触式方法对33例患者进行了监测。报告了两种仪器测得的呼吸频率的统计分析（Bland-Altman）。我们还报告了基于对同一受试者群体测得的信号质量对胸部区域的最佳位置的研究。结果表明，可以连续监测呼吸频率，相对于肺活量计数据的平均差为13 m（相对误差：0.35％）。

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来源
《2010 IEEE International Workshop on Medical Measurements and Applications Proceedings》|2010年|P.19-22|共4页
会议地点 Ottawa(CA);Ottawa(CA)
作者
Scalise Lorenzo; Marchionni Paolo; Ercoli Ilaria;
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作者单位

Department of Mechanics, Polytechnic University of Marche, Ancona, ITALY;

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原文格式 PDF
正文语种 eng
中图分类医药卫生器械;
关键词
laser doppler vibrometry; non contact; respiration rate;

机译：激光多普勒振动法;非接触式;呼吸频率;

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3. Black Carbon Measurements of Flame-Generated Soot as Determined by Optical, Thermal-Optical, Direct Absorption, and Laser Incandescence Methods [J] . Yelverton Tiffany L. B., Hays Michael D., Gullett Brian K., Environmental Engineering Science . 2014,第4期

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4. Optical method for measurement of respiration rate [C] . IEEE International Workshop on Medical Measurements and Applications Proceedings . 2010

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5. AN OPTICAL METHOD FOR THERMAL BOUNDARY LAYER MEASUREMENTS IN A MODERATELYRAREFIED GAS. [D] . MATTHEWS, EDWARD KAY. 1961

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6. Evaluating a new method to estimate the rate of leaf respiration in the light by analysis of combined gas exchange and chlorophyll fluorescence measurements [O] . Xinyou Yin, Zhouping Sun, Paul C. Struik, -1

机译：通过分析气体交换和叶绿素荧光测量相结合的方法评估一种估算光中叶片呼吸速率的新方法
7. Endothermy of dynastine scarab beetles (Cyclocephala colasi) associated with pollination biology of a thermogenic arum lily (Philodendron solimoesense) : Cyclocephala colasi beetles are facultative endotherms that spend most of their adult lives inside the inflorescences of Philodendron solimoesense, where ambient temperature (Ta) averages about 28°C due to floral thermogenesis. Measurements of respiration within a range of Ta showed that active beetles became spontaneously endothermic at Ta below 28°C but were rarely endothermic above it. There was no evidence of endothermy within the inflorescences, indicating that activities in the floral chamber can occur without the high energy expense of endothermy. Bouts of endothermy occurred at lower Ta in respirometer chambers mainly in the evening, when the insects normally fly from one inflorescence to another, and during the night, when they normally eat and mate within the inflorescence. Patterns of endothermy in individual episodes were studied in non-flying beetles with respirometry and infrared thermal imaging. Heat was generated in the thorax by oscillatory waves of respiration that were coupled with thoracic temperature (Tth) increases. Stationary beetles could regulate Tth at about 33°C independently of Ta between 16 and 29°C. At Ta20°C, this represents a 116-fold increase in metabolic rate over resting, ectothermic values. Endothermy was clearly a requirement for flight, and beetles departing inflorescences warmed to about 30°C before take-off. During flight, Tth was dependent on Ta, decreasing from 37 to 28°C at Ta of 37 to 20°C, respectively. The lowest Ta at which flight could occur was about 20°C. Thermal conductance of stationary, endothermic beetles increased at higher metabolic rates, probably because of increased ventilatory heat loss. [O] . Seymour, R.S., White, C.R., Gibernau, Marc 2009

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8. A Simple Photometer for Precise Determination of Dissolved Oxygen Concentration by the Winkler Method with Recommendations for Improving Respiration Rate Measurements in Aquatic Organisms [R] . Vargo, S. L. , Force, R. K. 1981

机译：一种简单的光度计，用于通过Winkler方法精确测定溶解氧浓度，提出改善水生生物呼吸速率测量的建议

Optical method for measurement of respiration rate

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