By 1617 Bourgeois had published an expanded two-volume edition of Observations diverses in Paris, developing the first known midwife-authored medical handbook.
By 1617, Louise Bourgeois had expanded her original 1609 publication into a fuller two-volume edition of Observations diverses, published in Paris. This expanded edition incorporated additional case histories and refined guidance accumulated over years of continued midwifery practice following her initial royal service.
The expansion of her work reflects the continuing demand for her expertise and the growing recognition of her text as an authoritative resource, not only among midwives but among physicians and educated readers interested in women's reproductive health. The two-volume structure allowed her to organize her observations more systematically, covering an even broader range of conditions including fertility issues, pregnancy complications, and neonatal care.
Historians of medicine identify this expanded edition as part of what is considered the first known medical handbook written by a practicing midwife, distinguishing it from contemporaneous medical texts written by university-trained physicians who lacked direct experience attending births. The continued expansion and republication of her work over nearly two decades demonstrates its enduring practical value and reputation.
This 1617 edition helped cement Bourgeois's reputation beyond France, as her observations began to circulate more widely among European medical and midwifery communities, laying groundwork for the text's eventual translation into multiple languages and its influence on obstetric literature for generations.