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Related Concept Videos

Radical Reactivity: Nucleophilic Radicals01:16

Radical Reactivity: Nucleophilic Radicals

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Radicals adjacent to electron-donating groups are called nucleophilic radicals. These radicals readily react with electrophilic alkenes. The SOMO–LUMO interactions are the driving force for the reaction, where the high-energy SOMO of the electron-rich, nucleophilic radicals interacts with the low-energy LUMO of the electron-deficient, electrophilic alkenes. Such SOMO–LUMO interactions are the basis of reactive radical traps, affecting the selectivity in radical reactions. For...
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Radical Reactivity: Electrophilic Radicals01:02

Radical Reactivity: Electrophilic Radicals

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Radicals adjacent to electron‐withdrawing groups are called electrophilic radicals. These radicals readily react with nucleophilic alkenes. For example, the malonate radical, in which the radical center is flanked by two electron‐withdrawing groups, reacts readily with butyl vinyl ether, which consists of an electron‐donating oxygen substituent. The reaction between electrophilic malonate radical and nucleophilic vinyl ether is favored because the radical has a...
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Radical Autoxidation01:20

Radical Autoxidation

3.1K
The oxidation of an organic compound in the presence of air or oxygen is called autoxidation. For example, cumene reacts with oxygen to form hydroperoxide. Autoxidation involves initiation, propagation, and termination steps. Many organic compounds are susceptible to autoxidation—especially ethers in the presence of oxygen, which form hydroperoxides. Even though this reaction is slow, old ether bottles contain small amounts of peroxide, which leads to laboratory explosions during ether...
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Data Reporting and Recording01:24

Data Reporting and Recording

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Reporting and recording are crucial in data documentation. The timely, thorough, and accurate documentation of facts is essential when recording patient data. Failure to record findings during an assessment or interpretation of a problem will result in loss of information and make the patient document unreliable. The reader is left with general impressions if the information is not specific. A recording is documenting data of the individual's health information in a traceable, secure, and...
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Types of Reports I: Hands-off Report01:25

Types of Reports I: Hands-off Report

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A hand-off report, also known as a change-of-shift report, is a crucial nursing process that ensures the smooth transition of patient care responsibilities between nursing staff.
Following are the key components and categories of hand-off reports:
Purpose and Process:
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Radical Formation: Overview01:03

Radical Formation: Overview

2.6K
A bond can be broken either by heterolytic bond cleavage to form ions or homolytic bond cleavage to yield radicals. A fishhook arrow is used to represent the motion of a single electron in homolytic bond cleavage. There are two main sources from which radicals can be formed:
Radicals from spin-paired molecules:
Radicals can be obtained from spin-paired molecules either by homolysis or electron transfer. While two radicals are formed in the former, an electron is added in the...
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Pyoderma gangrenosum after radical prostatectomy: case report.

Akiyoshi Osaka1, Hisamitsu Ide1, Shinichi Ban2

  • 11Department of Urology, Saitama Medical Center, Dokkyo Medical University, 2-1-50, Minamikoshigaya, Koshigaya, Saitama 343-8555 Japan.

International Cancer Conference Journal
|June 1, 2019
PubMed
Summary

Post-operative pyoderma gangrenosum (PG) is a rare, destructive skin ulcer that can mimic surgical site infections. Prompt diagnosis and consideration of PG in non-healing wounds are crucial.

Keywords:
Prostate cancerPyoderma gangrenosumRadical prostatectomy

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Area of Science:

  • Dermatology
  • Surgical Pathology

Background:

  • Pyoderma gangrenosum (PG) is a neutrophilic dermatosis presenting as destructive ulcers.
  • Post-operative PG is a rare variant occurring at surgical sites, often misdiagnosed as infection.

Observation:

  • A 64-year-old man developed rapidly progressing ulcerative lesions post-radical prostatectomy.
  • Despite antibiotics and debridement, the lesions worsened, spreading to the drain site.

Findings:

  • Skin biopsy revealed neutrophilic infiltration without vasculitis, tumor, or malignancy, confirming PG.
  • The patient experienced widespread lesion progression and multiple organ dysfunction, leading to death.

Implications:

  • Highlights the critical importance of considering pyoderma gangrenosum in non-healing post-operative wounds.
  • Emphasizes the need for prompt diagnosis and appropriate management to prevent severe complications and mortality.