The Size of External Urethral Meatus on Maximum Stretch in Indian Adult Males

Bhat, Gajanan S.; Shivalingiah, M.; Nelivigi, Girish G; Ratkal, Chandrashekhar S

doi:10.1007/s12262-012-0549-x

Cited by 4 publications

(2 citation statements)

References 2 publications

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“…When the balloon is filled with 0.5-2cc of fluid, it will not exceed the maximum dilated width of the male urethra; which was found to be 28.49 french (9.5 mm) in a recent study in Indian males. 15 Compared to the use of forceps/graspers, a pediatric foley catheter may reduce trauma to the urethra.…”

Section: Care Plan Outlinementioning

confidence: 99%

Evaluation and management of urethral foreign bodies and description of a novel ultrasound‐guided catheter‐based extraction technique

2021

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There are numerous reports in the medical literature documenting urethral foreign bodies with nearly all cases found in men and often associated with underlying psychiatric disorders, autoerotic stimulation, and/or intoxication. Patients most commonly presented with localized penile pain, hematuria, dysuria, and occasionally obstruction. Although endoscopic removal by a urologist is often the first‐line treatment, this report describes evaluation and management considerations and presents a novel extraction technique that may allow emergency physicians in consultation with urology to perform removal of some unusual urethral foreign bodies in the emergency department. We report a novel extraction technique using a pediatric foley catheter under ultrasound guidance that has been applied during multiple encounters with 2 individuals who have each presented multiple times at a single emergency department (ED) for evaluation because of urethral foreign body insertion. The foreign body materials have ranged from small pieces of rubber to cellophane to styrofoam and most commonly plastic utensils. Urologic extraction may be required in some cases, but ED removal can be considered. A final discussion of the creation of a multidisciplinary care plan to address resource use concerns also is described.

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Section: Care Plan Outlinementioning

confidence: 99%

Evaluation and management of urethral foreign bodies and description of a novel ultrasound‐guided catheter‐based extraction technique

2021

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“…The dimensions of medical diagnostic devices need to be defined considering reported anatomical measurements. The average diameter with a maximum stretch of the external urethral meatus was reported to be within the range of 6.0 to 10.3 mm [25], [26], [27]. The outside diameter of a commonly used flexible endoscope is between 5.0 to 8.3 mm [28].…”

Section: Introductionmentioning

confidence: 99%

Design, Prototyping, and Characterization of a Micro-Force Sensor Intended for Tissue Assessment in Confined Spaces

Kumat,

Shiakolas

2024

IEEE Sensors J.

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The quantitative characterization of soft tissue viscoelastic properties can aid in disease prognosis and diagnosis. Existing technologies present challenges to measuring localized in-vivo tissue relaxation data while meeting load and geometric constraints. This research presents the design, prototype and characterization of a micro-force sensor that could enable better access to confined spaces of the human body. The novel design of the uni-axial micro-force sensor has an external diameter of less than or equal to 3.5 mm and 1 N load capacity for transurethral palpation of the bladder interior wall. The conceptual design of the micro-force sensor and a finite element based discrete optimization procedure to determine the optimum values of the identified design parameters of bend radius, bend angle, and thickness while meeting defined operational and geometric constraints are presented. These optimum values guided the prototyping of an aluminum sensing element with 2.18 mm bend radius, 104.9 • bend angle, and 0.3 mm thickness. A miniature metal foil strain gauge was attached at defined location on the sensing element for measurement purposes. An experimental testbed was developed, calibrated and used for characterization experiments. The performance matrix of the prototyped micro-force sensor was experimentally evaluated. The sensitivity, resolution, accuracy, precision, and repeatability band of the sensor were evaluated to be 859.73 µ /N, 2.6 mN, 28.6 mN, 87.22%, and ± 2.87% respectively with a hysteresis of 118 mN. These experimental results provide confidence to further employ the sensor for in-vivo experiments towards the identification of viscoelastic properties of soft tissue.

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