Related Experiment Video
Updated: May 2, 2026

11:19
Robotic Myotomy and Partial Fundoplication for Achalasia
Published on: August 11, 2023
1.6K
Comparing Two Types of Robotic Single-Site Myomectomy Using Propensity Score Matching: Coaxial with da Vinci Xi vs.
Nara Lee1, Su Hyeon Choi1, Mi-La Kim1
1Department of Obstetrics and Gynecology, CHA Gangnam Medical Center, CHA University, Seoul 06135, Republic of Korea.
Journal of Clinical Medicine
|July 29, 2025
Summary
Coaxial robotic single-site myomectomy (RSSM) using the da Vinci Xi system showed reduced operative time and blood loss compared to the da Vinci SP system. Further prospective studies are recommended for validation.
Area of Science:
- Minimally Invasive Surgery
- Gynecologic Oncology
- Robotic Surgery
Background:
- Uterine fibroids (myomas) are common, often requiring surgical intervention.
- Robotic surgery offers advanced capabilities for complex gynecologic procedures.
- Comparing different robotic platforms is crucial for optimizing surgical outcomes.
Purpose of the Study:
- To compare surgical outcomes of coaxial robotic single-site myomectomy (RSSM) using da Vinci Xi versus da Vinci SP systems.
- To evaluate differences in blood loss, operative time, and recovery between the two robotic platforms.
Main Methods:
- Retrospective review of 81 women undergoing coaxial RSSM (da Vinci Xi) and 108 women undergoing myomectomy (da Vinci SP).
- Propensity score matching based on myoma characteristics (count, size, FIGO type).
- Comparison of patient demographics and surgical outcomes, including blood loss, operative time, hemoglobin change, and hospital stay.
Main Results:
- The coaxial RSSM group exhibited significantly lower estimated blood loss (p < 0.001) and shorter operative time (p < 0.001) compared to the SP group.
- Hemoglobin decrement was significantly smaller in the coaxial RSSM group (p < 0.001).
- Hospital stay was shorter in the SP group (p < 0.001), with no significant differences in postoperative complications.
Conclusions:
- Coaxial RSSM using the da Vinci Xi system is associated with reduced operative time and blood loss compared to myomectomy with the da Vinci SP system.
- While the da Vinci SP system demonstrated a shorter hospital stay, further investigation is needed.
- Prospective studies are warranted to definitively compare the surgical outcomes of these two robotic myomectomy techniques.
Related Concept Videos
The Ratio of X Chromosome to Autosomes
11.5K
In most organisms, sex is determined by the ratio of X and Y chromosomes. However, in some organisms, such as Drosophila and C.elegans, sex is determined by the ratio of the number of X chromosomes to the number of sets of autosomes. The Y chromosome in Drosophila is active but does not determine sex. It contains genes responsible for the production of sperms in adult flies.
Normal male Drosophila has a ratio of one X chromosome to two sets of autosomes. In contrast, normal female...
Normal male Drosophila has a ratio of one X chromosome to two sets of autosomes. In contrast, normal female...
11.5K
Multiple Comparison Tests
3.4K
Multiple comparison test, abbreviated as MCT, is a post hoc analysis generally performed after comparing multiple samples with one or more tests. An MCT will help identify a significantly different sample among multiple samples or a factor among multiple factors.
It would be easy to compare two samples using a significance alpha level of 0.05. In other words, there is only one sample pair to be compared. However, it would be difficult to identify a significantly different sample if the number...
It would be easy to compare two samples using a significance alpha level of 0.05. In other words, there is only one sample pair to be compared. However, it would be difficult to identify a significantly different sample if the number...
3.4K
Mechanical Efficiency of Real Machines
1.6K
The mechanical efficiency of a machine is a fundamental concept that describes how effectively a machine can convert input work into output work. According to this concept, the efficiency of a machine is equal to the ratio of the output work to the input work. An ideal machine, meaning a machine that has no energy losses, has an efficiency of one. This implies that the input work and the output work are equal.
However, in reality, no machine can be truly ideal, and all of them experience some...
However, in reality, no machine can be truly ideal, and all of them experience some...
1.6K
One-Degree-of-Freedom System
1.0K
In mechanical engineering, one-degree-of-freedom systems form the basis of a wide range of electrical and mechanical components. Using these models, engineers can predict the behavior of various parts in a larger system, which gives them insight into how different forces interact with each other.
A one-degree-of-freedom system is defined by an independent variable that determines its state and behavior. One example of a one-degree-of-freedom system is a simple harmonic oscillator, such as a...
A one-degree-of-freedom system is defined by an independent variable that determines its state and behavior. One example of a one-degree-of-freedom system is a simple harmonic oscillator, such as a...
1.0K
Motor Units
14.2K
The motor unit is a fundamental component of the neuromuscular system and plays a crucial role in coordinating muscle contractions. It consists of a somatic motor neuron, which connects and controls multiple skeletal muscle fibers, forming a single functional segment. The axon of the motor neuron branches out and establishes synaptic connections known as neuromuscular junctions with individual muscle fibers within the motor unit.
Motor units come in different sizes, with smaller units...
Motor units come in different sizes, with smaller units...
14.2K
Transformers with Off-Nominal Turns Ratios
739
In scenarios involving parallel transformers with disparate ratings, developing per-unit models requires accommodating off-nominal turns ratios. This situation arises when the selected base voltages are not proportional to the transformer’s voltage ratings. Consider a transformer where the rated voltages are related by the term a. If the chosen voltage bases satisfy a relationship involving term b, term c is defined as the ratio of these bases. This ratio is then substituted into the...
739

