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Related Concept Videos

Directly Acting Muscle Relaxants: Dantrolene and Botulinum Toxin01:26

Directly Acting Muscle Relaxants: Dantrolene and Botulinum Toxin

Directly acting muscle relaxants like dantrolene and botulinum toxin (BoNT) have distinct mechanisms and applications. Dantrolene, a hydantoin derivative, acts on the ryanodine receptor (RYR1) in skeletal muscle cells. RYR1 are calcium channels present at the sarcoplasmic reticulum membrane. In response to excitation, they release calcium ions from the sarcoplasmic reticulum to the cytosol. Calcium promotes actin-myosin-mediated contraction of muscles.
The binding of dantrolene to the RYR1...
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Skeletal muscle relaxants are used to relax muscle tone and alleviate painful muscle contractions. However, the choice of skeletal muscle relaxants depends on the duration of the surgical procedure in order to minimize potential side effects. Skeletal muscle relaxants like neuromuscular blocking agents [NMBAs] are commonly employed as adjuvants alongside general anesthetics in clinical settings. NMBAs are also used to maintain controlled ventilation during surgery of the larynx or pharynx as...
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Tetanus

Tetanus is a life-threatening neurological disorder characterized by persistent muscle contractions and spastic paralysis. It is caused by Clostridium tetani, a motile, Gram-positive, rod-shaped, obligate anaerobe. These bacteria produce terminal endospores, giving them a distinctive “lollipop” or “tennis-racket” appearance. They thrive in anaerobic environments, such as those found in deep puncture wounds.Once introduced into the body, the spores germinate into vegetative cells. These cells...
Botulism01:22

Botulism

Botulism is a life-threatening neuroparalytic condition caused by botulinum neurotoxin, which is produced by the bacterium Clostridium botulinum, a Gram-positive, spore-forming, obligate anaerobe.In adults, the toxin enters the body in different ways: in foodborne botulism, the preformed toxin is absorbed in the intestine. In wound botulism, spores grow in injured tissue and release the toxin into the blood. Infant botulism differs mechanistically from adult forms. In infants, botulism commonly...
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Diphtheria

Diphtheria is an acute, toxin-mediated infectious disease that primarily affects the upper respiratory tract. It is caused by Corynebacterium diphtheriae, a Gram-positive, pleomorphic rod that lacks spore-forming capability and exhibits a characteristic club-shaped morphology under microscopic examination. While C. diphtheriae can asymptomatically colonize mucosal surfaces, clinical disease manifests only when the bacterial strain is lysogenized by a specific β-corynephage. This phage...
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Alterations in Muscle Tone ll

Alterations in muscle tone are common manifestations of neurological disorders and reflect dysfunction within different nervous system regions. Spasticity, paratonia, and dystonia represent distinct forms of hypertonia, each with unique mechanisms, clinical features, and diagnostic importance.CharacteristicsSpasticity happens from upper motor neuron lesions and is characterized by velocity-dependent resistance to passive movement. Clinical features include:Exaggerated deep tendon reflexesClonus...

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Updated: Jul 16, 2026

A Standardized Procedure of Dressing Management for Toxic Epidermal Necrolysis
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Published on: March 14, 2025

[Therapeutic problems in tetanus--presented via a case report]

H Gross1

  • 1Abteilung für Anästhesie und Intensivmedizin, Elisabeth-Diakonissen- und Krankenhaus Berlin.

Anasthesiologie, Intensivmedizin, Notfallmedizin, Schmerztherapie : AINS
|January 7, 1998
PubMed
Summary

This case study highlights a severe tetanus infection in a patient due to intravenous drug abuse. High-dose antitoxin therapy showed immunosuppressive effects, complicating treatment and immunization efforts.

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Last Updated: Jul 16, 2026

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Area of Science:

  • Infectious Diseases
  • Critical Care Medicine
  • Toxicology

Background:

  • Intravenous drug abuse poses risks for serious infections, including tetanus.
  • Clostridium tetani infection can lead to severe complications requiring intensive care.

Observation:

  • A 40-year-old female with tetanus from intravenous drug use required 42 days of mechanical ventilation.
  • The patient underwent multiple surgical interventions for injection-site abscesses.
  • High-dose tetanus antitoxin therapy was administered, alongside intensive care and antibiotics.

Findings:

  • The patient developed a superior vena cava thrombus and pneumonia but recovered.
  • Tetanus antitoxin therapy demonstrated an immunosuppressive effect, confirmed by antibody titers.
  • Attempts at active immunization to generate endogenous antitoxin failed.

Implications:

  • This case underscores therapeutic uncertainties in managing severe tetanus, particularly regarding antitoxin dosage and monitoring.
  • It highlights challenges in achieving adequate immunity post-treatment in such patients.
  • Effective antibiotic strategies and individualized treatment protocols are crucial.