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Open AccessArticle

Development of a Low-Cost Wireless Phonocardiograph With a Bluetooth Headset under Resource-Limited Conditions

1
Department of Physiology, Fakir Mohan Medical College and Hospital, Balasore, 756019, Odisha India
2
Department of Physiology, Kalna SD Hospital, Kalna, Purba Bardhaman, 713409, West Bengal, India
3
Department of Anatomy, Fakir Mohan Medical College and Hospital, Balasore, 756019, Odisha, India
*
Author to whom correspondence should be addressed.
Med. Sci. 2018, 6(4), 117; https://doi.org/10.3390/medsci6040117
Received: 26 November 2018 / Revised: 11 December 2018 / Accepted: 11 December 2018 / Published: 17 December 2018
(This article belongs to the Special Issue e-Health in Cardiovascular Medicine)
Commercially available digital stethoscopes can be used as a phonocardiograph to record heart sounds. However, procuring a costly digital stethoscope may not be possible under resource-limited conditions. A low-cost, wire connected, and mobile phone-assisted phonocardiograph has been reported previously. The aim of this study was to develop a low-cost and wireless phonocardiograph for resource-limited settings. A Bluetooth headset was dismantled to find its microphone. A stethoscope ear knob was cut to make a small bell and it was attached to the microphone. This modified Bluetooth headset was capable of recording sounds while connected to a mobile device with audio recording application. The modified Bluetooth headset, mobile phone, and audio recording software can serve as a wireless phonocardiograph (WiPCGh). Heart sounds were successfully recorded with the help of the newly developed WiPCGh. The audio files were shared with a personal computer (PC) via Bluetooth. The wave form was analyzed in a PC-based audio editing application. First and second heart sounds with systolic and diastolic murmur were identified. WiPCGh can be utilized in recording heart sounds for academic and telemedicine purposes. However, the capability of WiPCGh in the diagnosis of cardiac diseases is yet to be explored in future studies. View Full-Text
Keywords: auscultation; cell phone; heart sounds; phonocardiography; stethoscopes auscultation; cell phone; heart sounds; phonocardiography; stethoscopes
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MDPI and ACS Style

Mondal, H.; Mondal, S.; Saha, K. Development of a Low-Cost Wireless Phonocardiograph With a Bluetooth Headset under Resource-Limited Conditions. Med. Sci. 2018, 6, 117.

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