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Related Concept Videos

Clinical Trials01:16

Clinical Trials

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Clinical trials are prospective experimental studies conducted on humans to determine the safety and efficacy of treatments, drugs, diet methods, and medical devices. Using statistics in clinical trials enables researchers to derive reasonable and accurate conclusions from the collected data, allowing them to make wise decisions in uncertain situations. In medical research, statistical methods are crucial for preventing errors and bias.
There are four phases in a clinical trial. A phase one...
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Clinical Trials: Overview01:11

Clinical Trials: Overview

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Clinical development focuses on how the drug will interact with the human body and encompasses four key phases of clinical trials, each serving a specific purpose in assessing the safety and effectiveness of new drugs. These phases overlap and build upon one another. Phase I involves a small group of healthy volunteers (typically 20-80 individuals) or, in cases where significant toxicity is expected, patients with the targeted disease, such as cancer or AIDS. The volunteers are tested for...
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Statistical Software for Data Analysis and Clinical Trials01:12

Statistical Software for Data Analysis and Clinical Trials

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Statistical software is pivotal in data analysis and clinical trials by providing tools to analyze data, draw conclusions, and make predictions. These software packages range from simple data management applications to complex analytical platforms, supporting various statistical tests, models, and simulation techniques. Their significance lies in their ability to handle vast amounts of data with precision and efficiency, enabling researchers to validate hypotheses, identify trends, and make...
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Common Ion Effect03:24

Common Ion Effect

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Compared with pure water, the solubility of an ionic compound is less in aqueous solutions containing a common ion (one also produced by dissolution of the ionic compound). This is an example of a phenomenon known as the common ion effect, which is a consequence of the law of mass action that may be explained using Le Châtelier’s principle. Consider the dissolution of silver iodide:
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Titrimetric Methods: Types and Commonly Used Strategies01:08

Titrimetric Methods: Types and Commonly Used Strategies

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In chemistry, titrimetric methods are broadly classified into three types: volumetric, gravimetric, and coulometric. Volumetric titrations involve measuring the volume of a titrant of known concentration that is required to react completely with an analyte. In gravimetric titrations, the standard solution reacts with the analyte to form an insoluble precipitate, which is filtered, dried, and weighed. In coulometric titrations, current is applied to an electrochemical reaction until the reaction...
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Administering Oxygen by Nasal Cannula01:29

Administering Oxygen by Nasal Cannula

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Oxygen therapy is critical to patient care, especially for those struggling with respiratory issues. This intervention increases the oxygen concentration in the lungs, enhancing the amount of oxygen transported to the body's tissues. One standard method of delivering supplemental oxygen is through a nasal cannula, a non-invasive device that provides low to medium oxygen concentrations.
Nasal Cannulas
A nasal cannula is a lightweight tube split into two prongs placed in the nostrils,...
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Related Experiment Video

Updated: Jan 21, 2026

Clinical Application of 24 G Cannula Needle and 3-0 Polypropylene Suture in Vas Deferens Exploration
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Comparing cannula-based subcision with the common needle method: A clinical trial.

Mohammad Ali Nilforoushzadeh1,2, Elaheh Lotfi2,3, Maryam Heidari-Kharaji1,3

  • 1Skin and Stem Cell Research Center, Tehran University of Medical Sciences, Tehran, Iran.

Skin Research and Technology : Official Journal of International Society for Bioengineering and the Skin (ISBS) [And] International Society for Digital Imaging of Skin (ISDIS) [And] International Society for Skin Imaging (ISSI)
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Summary

Cannula subcision significantly improved rolling acne scars in 83% of patients with fewer side effects than needle subcision. This technique offers a safer and more effective treatment option for acne scar revision.

Keywords:
acnecannulaneedlescarsubcision

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Area of Science:

  • Dermatology
  • Aesthetic Medicine

Background:

  • Acne scars, particularly rolling scars, present a treatment challenge requiring multiple modalities.
  • Needle subcision is a common method but has limitations, including moderate efficacy, recurrence, and side effects.

Purpose of the Study:

  • To evaluate the efficacy and safety of 18-gauge cannula subcision compared to 27-gauge needle subcision for treating rolling acne scars.

Main Methods:

  • A randomized study involving 100 patients with rolling acne scars.
  • Patients were treated with either 18-gauge cannula subcision or 27-gauge needle subcision.
  • Outcomes were assessed by three blinded dermatologists and patient satisfaction surveys.

Main Results:

  • Cannula subcision demonstrated significant improvement in approximately 83% of patients (P < .05).
  • Minimal side effects were reported with cannula subcision compared to needle subcision.
  • A significantly higher response rate was observed with cannula subcision.

Conclusions:

  • Cannula subcision is a safe and practical technique for rolling acne scar treatment.
  • This method enhances treatment efficacy with fewer complications than traditional needle subcision.