U-turn Maneuver
U-turn Maneuver - Related Videos
08:48
Complementation of Splicing Activity by a Galectin-3 - U1 snRNP Complex on Beads
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2020
This article describes the experimental procedures for (a) depletion of U1 snRNP from nuclear extracts, with concomitant loss of splicing activity; and (b) reconstitution of splicing activity in the U1-depleted extract by galectin-3 - U1 snRNP particles bound to beads covalently coupled with anti-galectin-3 antibodies.
14:28
Software for Analysis of Heart Rate and Blood Pressure Time-series Data from the Valsalva Maneuver
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Cited by 1 •
2025
The ValsalvaAnalyzer software includes functions to analyze continuous beat-to-beat electrocardiogram and blood pressure (BP) measurements recorded during the Valsalva maneuver (VM). The computed clinical biomarkers and estimated model outputs provide insight into sympathetic and parasympathetic regulation of heart rate and BP during the VM.
12:27
Modified Laparoscopic Anatomic Hepatectomy: Two-Surgeon Technique Combined with the Simple Extracorporeal Pringle Maneuver
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2023
Here, we present a protocol to perform a modified laparoscopic anatomic hepatectomy using improved techniques and instruments.
08:35
Oxygenation-sensitive Cardiac MRI with Vasoactive Breathing Maneuvers for the Non-invasive Assessment of Coronary Microvascular Dysfunction
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Cited by 16 •
2022
The assessment of microvascular function by oxygenation-sensitive cardiac magnetic resonance imaging in combination with vasoactive breathing maneuvers is unique in its ability to assess rapid dynamic changes in myocardial oxygenation in vivo and, thus, may serve as a critically important diagnostic technique for coronary vascular function.
11:40
Quantitative Autonomic Testing
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Cited by 179 •
2011
Standardized, comprehensive and fully quantitative testing of autonomic functions is described. The autonomic tests consist of evaluation of all three major autonomic domains including cardiovagal, adrenergic and sudomotor. The severity and distribution of dysautonomia is quantitated using Composite Autonomic Severity Scores.
FAQs
Controlled withdrawal helps the operator create the reverse curve while preserving a stable visual field. It works together with instrument rotation and angulation rather than acting as an isolated movement. This coordinated sequence lets the instrument redirect toward concealed anatomy and limits the need for forceful advancement, which may reduce tissue trauma.
Rotation changes orientation, while angulation bends the instrument toward a selected direction. When these controls are combined with withdrawal, the tip follows a tight curved path instead of continuing along its original trajectory. This mechanical coordination allows the operator to redirect the view or working approach around anatomy that is not aligned with a straight route.
Safety depends on the relationship between the anatomy, the instrument’s mechanical behavior, and the operator’s control. Curved or concealed anatomy can make redirection useful, but the maneuver still requires careful handling to maintain the view and avoid excessive force. These factors influence whether access improves without increasing the risk of tissue trauma or procedural complications.
A reverse curve is useful when the target surface or pathway cannot be approached effectively along a straight route. Instead of relying only on forward advancement, the operator redirects the instrument through controlled withdrawal, rotation, and angulation. This can improve visualization of concealed surfaces and help the instrument follow curved anatomy during minimally invasive work.
An operator generally advances the instrument to the relevant region, then uses controlled withdrawal together with rotation and angulation to form the reverse curve. The view should remain stable while the direction changes, and force should be avoided. This sequence supports deliberate access to concealed surfaces rather than relying on direct advancement alone.
The technique is relevant to endoscopic and other minimally invasive procedures where anatomy may be difficult to access directly. It can support examination of concealed surfaces, navigation through curved anatomical pathways, and targeted diagnostic or therapeutic work. Its usefulness depends on matching the instrument’s movements to the anatomy while preserving control and visualization.
Useful outcomes include improved examination of concealed surfaces, more effective navigation through curved anatomical pathways, and support for targeted diagnostic or therapeutic work. The maneuver’s value is therefore judged by whether it improves access or visualization while maintaining control and avoiding excessive force. These outcomes connect instrument handling with practical procedural goals.