Video Stethoscope???A Simple Method for Assuring Continuous Bilateral Lung Ventilation during Anesthesia

Practical Applications of Lung Sounds Research

“…However, in several examples presented in this review, phonopneumographic instrumentation provided unique information that is not easily obtained by other methods. 42,49,51,61,66 These quantitative approaches may eventually prove to be more selective and even more cost effective than other methods of monitoring and diagnosis.…”

“…By observing changes in right and left sound signals, any intraoperative shift in endotracheal tube placement can be rapidly identified. 49 Our ability to lateralize "phase heterophony" by differential auscultation or phonopneumography as shown in Figure 3 is based on recognition of relatively long duration and easy to hear delays of peak sound intensity. However, small differences in the rate of increase of inspiratory lung sounds can be detected over lung regions with inhomogenous pleural pressure, 50 even though peak sound intensities occur simultaneously on both sides (Fig.…”

Capnography in the Intensive Care Unit

“…These include chest radiography, fiberoptic bronchoscopy, the &dquo;video&dquo; stethoscope [45], and the Eschmann endotracheal tube introducer [40]. These include chest radiography, fiberoptic bronchoscopy, the &dquo;video&dquo; stethoscope [45], and the Eschmann endotracheal tube introducer [40].…”

New Tools in Lung Sound Research

“…Wooten and associates 4 have demonstrated the capability of differential auscultation. Huang and associates 6 have recently published the results of a preliminary study evaluating the use of a visual display of differential lung sounds recorded during general anesthesia in order to assess continuously the position of the endotracheal tube (Fig. 1).…”

“…The lower trace pattern results from a relative predominance of sound coming from the better ventilated right lung. (Reproduced with permission from Huang and associates 6 ).…”