PubMed · 14215504
The source did not provide an abstract. Follow the original record for more information.
Explore connections, maps & timelines
A E COMARR. 1964. SUBTRIGONAL DIVERTICULUM.. https://doi.org/10.1016/s0022-5347(17)63905-3
Cite the original work for its findings. Save a collection to share your selection of sources.
KEEP EXPLORING
A hundred years ago, on 20 April 1902, Breslaus most famous dentist of the time died. Julius Bruck was not only the most famous dentist and fighter for dentists' education in Germany in his time, but also one of the most successful inventors. In 1866, he produced light by using an exposed electrically heated platinum loop, which at that time was the most powerful light source known. He conceived of the possibility of placing the source of light in the distal end of an instrument and invented a double glass tube with a water-cooling compartment. This water cooled apparatus (diaphanoscope) was inserted into the rectum or vagina, to transilluminate the bladder. The key to further advances was born with the introduction of an internal electric light source. In 1877, the potential of Bruck's theoretical advance was realised in combination with other advances which virtually established the form of the clinically useful cystoscope as it is used today. The remarkable man responsible for this synthesis was Maximilian Nitze.
Explore the source record for details and available documents.
OBJECTIVE: To audit diagnostic and therapeutic fetal cystoscopy for suspected posterior urethral valves (PUV). METHODS: In 13 fetuses, (14-28 weeks) the bladder was entered with a 1.3 mm embryo-fetoscope and intravesical findings documented. In 10 fetuses, an attempt was made to treat the obstruction by saline hydro-ablation (n = 4) and/or guide-wire passage (n = 9). Renal function was assessed post-natally at 10 to 34 months. RESULTS: The bladder wall was visualised in 12/13 cases and the bladder neck in 11; in 10 cases the upper urethra was entered, and the obstruction visualised in five. PUV were 'seen' in 4/9 confirmed cases, but also in one case of urethral atresia, while in two others the degree of resistance to guide-wire passage suggested atresia or prune belly. Therapeutic attempts were technically successful, at least initially, in 6/10 cases. Of the five cases with confirmed PUV and normal fetal urinary electrolytes, two have acceptable renal function at follow-up. Hydro-ablation in one case resulted in resolution of sonographic signs of obstruction, and ablated valves were confirmed post-natally. CONCLUSIONS: Semi-rigid fetal cystoscopy allows entry into the upper urethra in most obstructive uropathies, although bladder neck angulation precludes visualisation of the site of obstruction in the majority. Guide-wire passage or hydro-ablation may allow relatively atraumatic ablation of PUV in utero without the chronic bladder decompression associated with vesico-amniotic shunting. However, current technical limitations need to be overcome, possibly by the use of flexible or angled fetoscopes, before the role of cystoscopic treatment can be formally evaluated.