Related Experiment Video
Updated: Feb 11, 2026
12:25
C-arm-Free Simultaneous OLIF51 and Percutaneous Pedicle Screw Fixation in a Single Lateral Position
Published on: September 16, 2022
4.6K
Supine Percutaneous Nephrolithotripsy in Double-S Position.
Giuseppe Giusti1, Antonello De Lisa1
1Department of Urology, University of Cagliari, Via Is Mirrionis 92, 09121 Cagliari, Italy.
Advances in Urology
|May 2, 2018
Summary
This study introduces a novel supine position for percutaneous nephrolithotripsy (PCNL), enhancing patient safety and procedural efficiency for kidney stone removal. The technique simplifies access and allows for combined treatments.
Area of Science:
- Urology
- Minimally Invasive Surgery
Background:
- Percutaneous nephrolithotripsy (PCNL) is commonly performed in prone or supine positions.
- A need exists for improved patient positioning in PCNL.
Purpose of the Study:
- To describe an innovative supine positioning technique for PCNL.
- To evaluate the safety and efficacy of this novel position.
Main Methods:
- A modified supine position with specific thoracic inclination and support was utilized.
- The technique allows continuous access to external genitalia for flexible instrumentation.
- The position was used in 45 patients undergoing PCNL over 12 months.
Main Results:
- All procedures were completed successfully without complications.
- Benefits include easier patient positioning, improved flank exposure, and reduced risk of pressure injuries.
- Facilitates combined endourological procedures (ECIRS) and offers good fluoroscopic visualization.
Conclusions:
- The described supine position is effective, safe, and easy to implement for PCNL.
- It allows for combined anterograde and retrograde renal access.
- This technique offers advantages over traditional positioning methods.
Related Concept Videos
02:32Position-effect Variegation
7.1K
In 1928, a German botanist Emil Heitz observed the moss nuclei with a DNA binding dye. He observed that while some chromatin regions decondense and spread out in the interphase nucleus, others do not. He termed them euchromatin and heterochromatin, respectively. He proposed that the heterochromatin regions reflect a functionally inactive state of the genome. It was later confirmed that heterochromatin is transcriptionally repressed, and euchromatin is transcriptionally active chromatin.
7.1K
02:04Fixing Double-strand Breaks
14.9K
The double-stranded structure of DNA has two major advantages. First, it serves as a safe repository of genetic information where one strand serves as the back-up in case the other strand is damaged. Second, the double-helical structure can be wrapped around proteins called histones to form nucleosomes, which can then be tightly wound to form chromosomes. This way, DNA chains up to 2 inches long can be contained within microscopic structures in a cell. A double-stranded break not only damages...
14.9K
01:31Position and Displacement
26.8K
The position of an object defines its location relative to a convenient frame of reference at any particular time. A frame of reference is an arbitrary set of axes from which the position and motion of an object are described. Earth is often used as a frame of reference, and we often describe the position of an object as it relates to stationary objects on Earth. For example, a rocket launch could be described in terms of the position of the rocket with respect to Earth as a whole. On the other...
26.8K
01:03Serial Position Effect
563
The serial position effect is a cognitive phenomenon where individuals are more likely to recall the first and last items in a list compared to those in the middle. This effect is divided into the primacy effect and the recency effect. The primacy effect is observed when the initial items in a list are remembered better. This occurs because these items are rehearsed more frequently or receive more elaborative processing, allowing them to be encoded into long-term memory more effectively. For...
563
01:29Position Vectors
2.0K
A position vector is a fundamental concept in mathematics that helps determine the position of one point with respect to another point in space. It is a vector that describes the direction and distance between two points. Position vectors are highly useful in the field of math and science, as they help represent spatial relationships and make calculations easier.
For instance, we want to locate a point P(x, y, z) relative to the origin of coordinates O. In that case, we can define a position...
For instance, we want to locate a point P(x, y, z) relative to the origin of coordinates O. In that case, we can define a position...
2.0K
01:11Anatomical Positions
20.6K
In anatomy, several standard anatomical positions are used as references for describing the position and orientation of different body parts. These positions help provide a common frame of reference when discussing anatomical structures. The anatomical position is the standard reference point for describing the body's position and orientation. In this position:
The body is upright, facing forward, and standing erect.
The feet are parallel and flat on the floor.
The arms are hanging by the...
The body is upright, facing forward, and standing erect.
The feet are parallel and flat on the floor.
The arms are hanging by the...
20.6K