Digital stethoscope: technology update

Cardiovascular disease (CVD) is recognized as the leading cause of mortality throughout the world. About one-third of global mortality is attributable to CVD. In addition to clinical presentation, specific clinical exam findings can assist in treating and preventing CVD. CVD may initially manifest as pulmonary pathology, and thus, accurate cardiopulmonary auscultation is paramount to establishing accurate diagnosis. One of the most powerful tools available to physicians is the stethoscope. The stethoscope first emerged in the year 1818, invented by a French physician, René Laennec. Since then, the initial modest monaural wooden tube has evolved into a sophisticated digital device. This paper provides an analysis of the evolution of the stethoscope as well as highlights the advancement made by the modern digital stethoscope including the application of this tool in advancing care for patients suffering from CVD.

[1]  S. Taylor,et al.  An electronic stethoscope. , 1956, Lancet.

[2]  P. Stein,et al.  Frequency of the First Heart Sound in the Assessment of Stiffening of Mitral Bioprosthetic Valves , 1981, Circulation.

[3]  A Leenhardt.  [Cardiac auscultation]. , 1984, Soins. Cardiologie.

[4]  J. Levick.  Overview of the cardiovascular system , 1991 .

[5]  M. Tavel,et al.  Cardiac auscultation. A glorious past--but does it have a future? , 1996, Circulation.

[6]  C. Gaudio,et al.  Delayed gadolinium-enhanced cardiac magnetic resonance in patients with chronic myocarditis presenting with heart failure or recurrent arrhythmias. , 2006, Journal of the American College of Cardiology.

[7]  Firdaus E. Udwadia,et al.  Use of the fast fourier transform for frequency analysis of the first heart sound in normal man , 2006, Medical and biological engineering.

[8]  Ariel Roguin,et al.  Rene Theophile Hyacinthe Laënnec (1781-1826): the man behind the stethoscope. , 2006, Clinical medicine & research.

[9]  Minkyu Je,et al.  118-dB dynamic range, continuous-time, opened-loop capactance to voltage converter readout for capacitive MEMS accelerometer , 2010, 2010 IEEE Asian Solid-State Circuits Conference.

[10]  H. Alkadhi,et al.  MRI and CT in the diagnosis of coronary artery disease: indications and applications , 2010, Insights into imaging.

[11]  Bernard Grundlehner,et al.  Methods to Characterize Sensors for Capturing Body Sounds , 2011, 2011 International Conference on Body Sensor Networks.

[12]  J. Tielsch,et al.  Computerized lung sound analysis as diagnostic aid for the detection of abnormal lung sounds: a systematic review and meta-analysis. , 2011, Respiratory medicine.

[13]  Majid Maleki,et al.  The Role of Echocardiography in Coronary Artery Disease and Acute Myocardial Infarction , 2013, The journal of Tehran Heart Center.

[14]  John L Semmlow,et al.  Utility of an advanced digital electronic stethoscope in the diagnosis of coronary artery disease compared with coronary computed tomographic angiography. , 2013, The American journal of cardiology.

[15]  A. Bohadana,et al.  Fundamentals of lung auscultation. , 2014, The New England journal of medicine.

[16]  S. Ohshimo,et al.  Innovation in Analysis of Respiratory Sounds , 2016, Annals of Internal Medicine.

[17]  Simon Winther,et al.  A novel approach to diagnosing coronary artery disease: acoustic detection of coronary turbulence , 2016, The International Journal of Cardiovascular Imaging.

[18]  D. Schuurmans,et al.  Acoustic diagnosis of pulmonary hypertension: automated speech- recognition-inspired classification algorithm outperforms physicians , 2016, Scientific Reports.

[19]  Vineet Sinha,et al.  Development of digital stethoscope for telemedicine , 2016, Journal of medical engineering & technology.

[20]  Sue Duval,et al.  Audible Coronary Artery Stenosis. , 2016, The American journal of medicine.

[21]  Samuel Emil Schmidt,et al.  Diagnostic performance of an acoustic-based system for coronary artery disease risk stratification , 2017, Heart.