11. Another indicator may be the presence of a pleural effusion, which can be noted on auscultation . 12. Auscultation is a skill that requires substantial clinical experience, a fine stethoscope and good listening skills.13. In this book he discusses topics such as auscultation , valvular deformities and hypertrophy of the heart. 14. A doctor, nurse, or midwife can also use palpation and auscultation to determine fetal position. 15. Shortly after, Ren?Laennec ( 1781-1826 ) invented the stethoscope and developed aided auscultation . 16. Cammann also wrote a major treatise on diagnosis by auscultation , which the refined binaural stethoscope made possible. 17. Typically the blood pressure obtained via palpation is around 10 mmHg lower than the pressure obtained via auscultation . 18. With partial obstruction, a fan sound or flag flapping sound can be heard during auscultation . 19. In TCM, the four diagnostic methods are : inspection, auscultation and olfaction, inquiring, and palpation. 20. Originally, there was a distinction between immediate auscultation ( unaided ) and mediate auscultation ( using an instrument ).