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Related Concept Videos

Precipitation Titration Curve: Analysis01:21

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The precipitation titration curve demonstrates the change in concentration of one reactant with the volume of titrant added. During the titration of chloride ions with silver nitrate, the precipitation titration curve is divided into three regions: before, at, and after the equivalence point. Before the equivalence point, low redissolution of the sparingly soluble silver chloride precipitate gives a low silver ion concentration. However, in the second region, representing the equivalence point,...
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Secondary amines react with nitrous acid to form N-nitrosamines, as depicted in Figure 1. Nitrous acid, a weak and unstable acid, is formed in situ from an aqueous solution of sodium nitrite and strong acids, such as hydrochloric acid or sulfuric acid, in cold conditions. In the presence of an acid, the nitrous acid gets protonated. The subsequent loss of water results in the formation of the electrophile known as nitrosonium ion.
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Inhalational Anesthetics: Overview01:20

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Inhalation anesthetics are drugs that induce general anesthesia upon inhalation. They work by increasing the sensitivity of GABAA receptors or inhibiting NMDA receptors, leading to a decrease in central nervous system activity. The depth of anesthesia can be rapidly adjusted by changing the concentration of the inhaled gas. Some common examples of inhalational anesthetics include volatile liquids like isoflurane, desflurane, sevoflurane and gases like xenon and nitrous oxide. Isoflurane, a...
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Prevention of Further Absorption of Poison01:14

Prevention of Further Absorption of Poison

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In cases of acute poisoning, the primary objective is to prevent further absorption of the toxic substance into the body. Immediate interventions using various decontamination techniques targeting the gastrointestinal (GI) tract can achieve this. Decontamination is crucial to prevent poison from entering the systemic circulation, which involves washing affected areas with water and mild soap and removing contaminated clothing. Once external decontamination is done, attention must be turned to...
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Precipitation Gravimetry01:03

Precipitation Gravimetry

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Precipitation gravimetry is based on converting an analyte into a sparingly soluble precipitate, which is separated by filtration and weighed. An ideal precipitate should be pure, insoluble, of known composition, and easily filtered from the reaction mixture.
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Nitriles to Ketones: Grignard Reaction00:57

Nitriles to Ketones: Grignard Reaction

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Organomagnesium halides, commonly known as Grignard reagents, convert nitriles to ketones and proceed through a nucleophilic acyl substitution. Nitriles react with a Grignard reagent, followed by an aqueous acid, to yield ketones. The reaction introduces a new carbon–carbon bond. The alkyl–magnesium bond in the Grignard reagent is highly polar, so the alkyl carbon develops a carbanionic character and acts as a nucleophile.
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A Novel Inhalation Mask System to Deliver High Concentrations of Nitric Oxide Gas in Spontaneously Breathing Subjects
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[Accidental silver nitrate inhalation].

B Nigen1, C Beuchard2, E Magois2

  • 1Service de pneumologie, Institut du thorax, hôpital Guillaume- et René-Laennec, CHU de Nantes, Nantes, France.

Revue Des Maladies Respiratoires
|November 16, 2021
PubMed
Summary
This summary is machine-generated.

Accidental inhalation of a silver nitrate pencil tip during granuloma treatment can cause serious complications. Careful monitoring and prompt endoscopic intervention are crucial for recovery.

Keywords:
Bronchial endoscopyFibroscopie bronchiqueInhalationNitrate d’argentSilver nitrateTracheostomyTracheotomyTrachéostomieTrachéotomie

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Area of Science:

  • Medical Case Reports
  • Otolaryngology
  • Pulmonology

Background:

  • Silver nitrate pencils are utilized for treating granulomas associated with tracheotomy and tracheostomy cannula orifices.
  • These applications target local tissue reactions, often in the airway or stoma sites.

Observation:

  • A case report details a 69-year-old patient who inadvertently inhaled the lead tip of a silver nitrate pencil.
  • The inhalation occurred during the treatment of a local granuloma, posing a risk of mucosal burns and perforation.

Findings:

  • The patient underwent clinical monitoring, radiological, and endoscopic examinations.
  • Treatment involved antibiotics and corticosteroids for inflammatory lesions, leading to complete anatomical recovery after six months.

Implications:

  • Silver nitrate pencil use necessitates extreme caution due to perforation risks.
  • Close monitoring, particularly bronchial endoscopy for foreign body localization and removal, is vital after accidental inhalation.
  • Corticosteroids may mitigate inflammatory bronchial stenosis, aiding recovery.