Monitoring of ventilation during exercise by a portable respiratory inductive plethysmograph
Monitoring of ventilation during exercise by a portable respiratory inductive plethysmograph
复制标题
DOI：
10.1378/chest.128.3.1282
复制
发表时间：
2005-09-01
期刊：
影响因子：
9.6
通讯作者：
Bloch, KE
中科院分区：
文献类型：
--
作者：
Clarenbach, CF;Senn, O;Bloch, KE
目的：为了评估的准确性，便携式呼吸，感应体积描记器，允许监测通气无气道仪器在不受限制的subjects.Design：验证一种新的技术相比，参考standard.Participants：31名受试者，包括20名健康志愿者，6例COPD患者，5例充血性心力衰竭。干预措施：参与者进行渐进式跑步机运动到筋疲力尽。通过一种新型电池供电、小型化和校准的呼吸感应体积描记器监测通气。环绕胸腔和腹部的电感传感器内置于所有弹性身体服装中。一个pneumatrachograph连接到一个喉舌作为参考methods.Measurements和结果：呼吸之间的电感体积描记器和pneumatrachograph在渐进式运动过程中的比较，以耗尽显示没有显着的偏差的呼吸周期时间，潮气量（VT），和分钟通气量。对于2，480次呼吸，相应的一致性限值（偏倚+/- 2 SD）分别为+/-6%、+/-17%和+/-17%。对20次呼吸的平均值进行比较，发现124次比较的周期时间的一致性限值提高了+/- 1%，潮气量和每分钟通气量的一致性限值提高了+/- 7%。对于患者和健康受试者，方法之间的一致性相似。在患者中，最大分钟通气量较低，呼吸较健康受试者更快和浅。阻塞性肺疾病与较短的工作周期比heartfail.Conclusions：便携式呼吸，感应体积描记器准确地估计在跑步机运动通气，并确定肺或心脏疾病患者和健康受试者之间的呼吸模式的差异。这种不显眼的监测技术是有前途的应用在门诊病人。
Objectives: To evaluate the accuracy of a portable respiratory, inductive plethysmograph that allows the monitoring of ventilation without airway instrumentation during exercise in unrestrained subjects.Design: Validation of a novel technique by comparison to a reference standard.Participants: Thirty-one subjects, including 20 healthy volunteers, 6 patients with COPD, and 5 patients with congestive heart failure. Interventions: Participants performed progressive treadmill exercise to exhaustion. Ventilation was monitored by a novel battery-powered, miniaturized, and calibrated respiratory inductive plethysmograph. inductance sensors encircling the rib cage and abdomen were built into all elastic body garment. A pneumotachograph attached to a mouthpiece served as the reference method.Measurements and results: Breath-by-breath comparisons between the inductance plethysmograph and pneumotachograph over the course of progressive exercise to exhaustion revealed no significant bias of respiratory cycle time, tidal volume (VT), and minute ventilation. The corresponding limits of agreement (bias +/- 2 SDs) were +/- 6%, +/- 17%, and +/- 17%, respectively, for 2,480 breaths. Comparisons of mean values averaged over 20 breaths revealed improved limits of agreement of +/- 1% for cycle time, and +/- 7% for tidal volume and minute ventilation, respectively, for 124 comparisons. Agreement between methods was similar for patients and healthy subjects. Among the patients, maximal minute ventilation was lower, and breathing was more rapid and shallow than in healthy subjects. Obstructive lung disease was associated with a shorter duty cycle than heart failure.Conclusions:The portable respiratory, inductive plethysmograph accurately estimates ventilation during treadmill exercise, and identifies differences in breathing patterns among patients with pulmonary or cardiac diseases and healthy subjects. This unobtrusive monitoring technique is promising for application in ambulatory patients.