Abstract：
UNLABELLED:Objective : Esophageal stethoscope has the advantage of being non-invasive, easily placed and capability to monitor the heart sound. This study was designed to determine whether the ratio of S1 to S2 analyzed by esophageal stethoscope and wireless bluetooth transmission can be accurate indicator that express the correlation with blood pressure. METHODS:Total 33 adult male and female without cardiac disorder and with normal heart rhythm were selected randomly as the subjects of this Study. Two microphones were used with one for acquisition of heart sound by connecting it to the esophageal stethoscope while the other was used to measure the background noise in the operating room. After having transmitted the heart sound measured with the esophageal stethoscope to the receiver by using bluetooth module, it was saved in PC and outputted, following removal of noise in the operating room and the respiratory sound. S1 and S2 were measured with computation of the ratio of S1 to S2. Correlations between the systolic blood pressure with each of the S1, S2 and ratio of S1 to S2 were examined by using correlation analysis. RESULTS:The ratio of S1 to S2 displayed the highest correlation with the systolic blood pressure, with S1 and S2 also displaying positive correlation with the systolic blood pressure. CONCLUSION:As the result of analysis of the heart sound and the systolic blood pressure measured by using the esophageal stethoscope, the radio of S1 to S2 displayed greater correlation with the systolic blood pressure in comparison to the S1.
journal_name
Pak J Med Scijournal_title
Pakistan journal of medical sciencesauthors
Hoon Lim K,Duck Shin Y,Hi Park S,Ho Bae J,Jae Lee H,Jung Kim S,Yun Shin J,Jin Choi Ydoi
10.12669/pjms.294.3639subject
Has Abstractpub_date
2013-07-01 00:00:00pages
1023-7issue
4eissn
1682-024Xissn
1681-715Xjournal_volume
29pub_type
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