Surgical Needle Tract
Surgical Needle Tract - Related Videos
01:25
Urinary Tract Calculi VI: Surgical Management
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2025
Procedures for Kidney StonesMedical intervention is necessary when kidney stones or renal calculi are too large to pass spontaneously (typically greater than 5 millimeters) when stones are accompanied by symptomatic infection (such as fever or pyelonephritis), when they impair kidney function, or when they cause persistent symptoms like severe pain, nausea, or urinary retention. Additionally, patients with only one kidney or those who cannot be treated with medical management also require...
02:51
Catheter-Associated Urinary Tract Infection in a Mouse Model
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2026
Source: Conover, M. S., et al., J. Establishment and Characterization of UTI and CAUTI in a Mouse Model. J. Vis. Exp. (2015)This video demonstrates the procedure for assembling and implanting a transurethral catheter in a female mouse, followed by bacterial inoculation to establish catheter-associated urinary tract infection and investigate biofilm-mediated host-pathogen interactions.
09:51
Intraosseous Needle Placement
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2023
Source: Julianna Jung, MD, FACEP, Associate Professor of Emergency Medicine, The Johns Hopkins University School of Medicine, Maryland, USA For unstable patients requiring urgent administration of medications, fluids, or blood products, establishing vascular access quickly is essential. However, there are many factors that can complicate placement of a peripheral intravenous cannula (PIV), and it is extremely common for PIV attempts to fail. PIV placement may be technically challenging in small...
03:47
Methylene Blue Dye Injection in Mouse Embryonic Urinary Tract: A Method To Assess the Congenital Obstruction in the Urinary Tract
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2025
In this video, we administer methylene blue dye injection into the urinary tract of a perinatal embryonic mouse to assess congenital anomalies related to urinary tract obstruction.
04:46
Isolation of Lymphocytes from Mouse Genital Tract Mucosa
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Cited by 10 •
2012
An efficient way to isolate lymphocytes from mouse genital tract is described. This method takes advantage of enzyme digestion and Percoll gradient separation to allow efficient isolation. This technique is also adaptable to for use in other...
FAQs
The entry point establishes where the needle begins, while its angle determines how it crosses successive tissue layers. Depth controls how far the pathway extends toward the intended anatomy. Together, these variables influence whether the needle reaches the target and how much surrounding tissue it encounters, making them central to planning accurate and safer access.
As the needle crosses tissue layers, its pathway can produce tissue disruption and may be associated with bleeding or contamination. Evaluating this interaction helps clinicians anticipate effects beyond the target itself. That assessment is relevant when selecting an access route, interpreting the procedure’s impact, and supporting postoperative care after the needle has been removed.
Clinicians can use the planned course to align the entry point, angle, and depth with the intended anatomy while limiting unnecessary passage through tissue. This approach supports safe access and accurate targeting. Reviewing the tract also helps identify potential concerns, including disruption, bleeding, or contamination, that may require attention during subsequent care.
Planning should account for the intended entry point, the angle of passage, the required depth, and the tissue layers encountered along the route. These factors determine the course toward the target and influence possible tissue effects. Considering them together helps clinicians choose an access pathway suited to the procedure rather than relying on a single variable.
The pathway may support several types of medical access, including biopsy, fluid aspiration, injection, localization, and placement of a device. The specific purpose determines what the needle must reach and how its course should be planned. Understanding that course helps connect the physical access route with the intended sampling, treatment, or device-related outcome.
Documentation preserves information about the access pathway and its relationship to the intended anatomy. In medicine and surgery, this record supports accurate sampling, effective treatment, and safer postoperative care. It also provides context for assessing tissue disruption, bleeding, or contamination and for understanding how the needle reached the target during the procedure.