Related Experiment Video
Updated: Jan 26, 2026
05:45
Author Spotlight: Process Development for the Spray-Drying of Probiotic Bacteria and Evaluation of the Product Quality
Published on: April 7, 2023
4.3K
Experimental study for evaluation of a low-cost spray cryotherapy system
Altair da Silva Costa1,2, Andre Miotto2, Gustavo Andrade de Paulo1
1Hospital Israelita Albert Einstein, São Paulo, SP, Brazil.
Einstein (Sao Paulo, Brazil)
|April 11, 2019
Summary
A new, low-cost spray cryotherapy system using tetrafluorethane is feasible and safe for tissue freezing. This system demonstrated user-friendliness and effective freezing in an experimental study.
Area of Science:
- Veterinary Medicine
- Surgical Innovation
- Cryobiology
Background:
- Cryotherapy is a valuable tool in various medical fields.
- Existing systems can be costly, limiting accessibility.
- Development of affordable cryotherapy solutions is needed.
Purpose of the Study:
- To assess the feasibility and applicability of a novel, low-cost spray cryotherapy system.
- To evaluate the system's performance in freezing biological tissues.
Main Methods:
- An experimental study utilized Landrace pigs.
- Spray cryotherapy was applied to exposed tissues using tetrafluorethane at -47°C.
- Specimens were analyzed histopathologically after freezing for 5, 10, or 15 seconds.
Main Results:
- The system, comprising a spray tube and catheter, was user-friendly and effective.
- Consistent gas dispersion and adequate tissue freezing were observed.
- Microscopic analysis did not reveal tissue damage, potentially due to timing constraints.
Conclusions:
- The low-cost spray cryotherapy system demonstrated feasibility and safety.
- Further investigation is warranted to evaluate long-term tissue effects.
Related Concept Videos
01:20Bioequivalence Experimental Study Designs: Completely Randomized and Randomized Block Designs
244
Body:Bioequivalence experimental study designs are crucial methodologies used in evaluating and comparing the bioavailability of different drug products. These designs are categorized into various types: completely randomized, randomized block, repeated measures, cross and carry-over, and Latin square designs.Completely randomized designs involve randomly allocating treatments to all subjects participating in the experiment. This allocation is achieved by assigning unique random numbers to...
244
02:37Experimental Determination of Chemical Formula
46.6K
The elemental makeup of a compound defines its chemical identity, and chemical formulas are the most concise way of representing this elemental makeup. When a compound’s formula is unknown, measuring the mass of its constituent elements is often the first step in determining the formula experimentally.
46.6K
01:16Experimental Designs
16.8K
An experimental design is a systematic process that allows researchers to evaluate the relationship between dependent and independent variables. There are three widely used types of experimental design - pre-experimental design, true experimental design, and quasi-experimental design. In pre-experimental design, the researcher compares the data before and after some interventions or treatments. The true-experimental design has more than one purposefully created group, a commonly measured...
16.8K
02:15Experimental RNAi
7.4K
RNA interference (RNAi) is a cellular mechanism that inhibits gene expression by suppressing its transcription or activating the RNA degradation process. The mechanism was discovered by Andrew Fire and Craig Mello in 1998 in plants. Today, it is observed in almost all eukaryotes, including protozoa, flies, nematodes, insects, parasites, and mammals. This precise cellular mechanism of gene silencing has been developed into a technique that provides an efficient way to identify and determine the...
7.4K
01:15Bioequivalence Experimental Study Designs: Repeated Measures, Cross-Over, Carry-Over, and Latin Square Designs
199
Body:Bioequivalence experimental study designs play a pivotal role in testing the effectiveness of various treatments. Key among these are the repeated measures, cross-over, carry-over, and Latin square designs. In the repeated measures design, each subject receives all treatments, allowing for temporal comparisons. This type of design is useful in reducing variability but requires careful planning to avoid bias.The cross-over design, an economical method, involves sequential administration of...
199
01:23Correlation of Experimental Data
482
Dimensional analysis simplifies complex physical problems and guides experimental investigations, but it does not provide complete solutions. It identifies the dimensionless groups that influence a phenomenon, but experimental data is needed to establish the specific relationships and validate theoretical predictions.
For example, a spherical particle moving through a viscous fluid experiences drag. Dimensional analysis shows that the drag force depends on the particle's diameter, velocity,...
For example, a spherical particle moving through a viscous fluid experiences drag. Dimensional analysis shows that the drag force depends on the particle's diameter, velocity,...
482