Hydrodynamic Aspects of Urinary Tract Infection

HinmanJr., F.

doi:10.1007/978-3-642-65640-8_2

Cited by 4 publications

(2 citation statements)

References 8 publications

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“…A wider urethra–bladder connection has been reported for mice, 31 dogs, 29 cats, 30 and humans 33 . Previous researchers have hypothesized that the microfolds on the urethra lumen adhere bacteria, which may remain and even flow back into the bladder and cause infection 49 . Upstream contamination is also found in other contexts, such as tea preparation 50 .…”

Section: Discussionmentioning

confidence: 99%

“…33 Previous researchers have hypothesized that the microfolds on the urethra lumen adhere bacteria, which may remain and even flow back into the bladder and cause infection. 49 Upstream contamination is also found in other contexts, such as tea preparation. 50 The tea leaves in a cup flow upward to the pot when the hot water spout is close to the leaves.…”

Section: Discussionmentioning

confidence: 99%

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Urinary flow through urethras with a rough lumen

Yang,

Chen,

Bracher

et al. 2023

Neurourology and Urodynamics

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Aims: This study investigates how lumen roughness and urethral length influence urinary flow speed.Methods: We used micro-computed tomography scans to measure the lumen roughness and dimensions for rabbits, cats, and pigs. We designed and fabricated three-dimensional-printed urethra mimics of varying roughness and length to perform flow experiments. We also developed a corresponding mathematical model to rationalize the observed flow speed.Results: We update the previously reported relationship between body mass and urethra length and diameter, now including 41 measurements for urethra length and 10 measurements for diameter. We report the relationship between lumen diameter and roughness as a function of position down the urethra for rabbits, cats, and pigs. The time course of urinary speed from our mimics is reported, as well as the average speed as a function of urethra length. Conclusions: Based on the behavior of our mimics, we conclude that the lumen roughness in mammals reduces flow speed by up to 25% compared to smooth urethras. Urine flows fastest when the urethra length exceeds 25 times

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Section: Discussionmentioning

confidence: 99%

Section: Discussionmentioning

confidence: 99%

Urinary flow through urethras with a rough lumen

Yang,

Chen,

Bracher

et al. 2023

Neurourology and Urodynamics

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Clinical Application of Hydrodynamics of the Ureter and Renal Pelvis

Hanna¹

1981

The Ureter

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Objective:To summarize the clinical application of ureter soft mirror. Methods:The treatment of urinary calculi includes ESWL, percutaneous nephrolithotomy, ureter soft mirror and so on , The treatment of urinary calculi with ureter soft mirror is becoming more and more widespread, and the indications are constantly relaxed. The stone size is no longer limited to less than 2 cm of kidney stones. In addition to urinary calculi, ureter soft mirror in the Department of Urology in other areas of its application value, including UPJ stenosis of internal incision, the removal of endogenous renal cyst, superficial tumor laser resection, Diagnosis of hematuria, etc.. Conclusion: Ureteral urology clinical application of soft lens technology in our country is still in its initial stage of groping requires more independent innovation and standardize the clinical and scientific research of technical equipment, promote ureteral soft lens surgery of conduct, to further improve the level of urology minimally invasive treatment in China.

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Literatur

Schmidt¹

1978

Motilität Der Oberen Harnwege

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Hydrodynamic Aspects of Urinary Tract Infection

Cited by 4 publications

References 8 publications

Urinary flow through urethras with a rough lumen

Urinary flow through urethras with a rough lumen

Clinical Application of Hydrodynamics of the Ureter and Renal Pelvis

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