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Related Concept Videos

Directly Acting Muscle Relaxants: Dantrolene and Botulinum Toxin01:26

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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.
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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...
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Skeletal muscle relaxants are widely used for muscle paralysis and relieving pain following any muscle injury or stiffness. However, depending on the drug type, they can have adverse effects that range from mild to severe. Usually, nondepolarizing neuromuscular blockers have minimal side effects. For example, drugs like d-tubocurarine, cisatracurium, and rocuronium cause hypotension, whereas drugs like baclofen, when stopped abruptly, can lead to the recurrence of spastic conditions.
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Depolarizing blockers are administered through intravenous injection. Succinylcholine is the most common choice of depolarizing blockers in emergency clinical practices. Although they have a rapid onset, they readily diffuse away from the motor end plate into the extracellular fluid. They are metabolized by enzymes such as liver butyrylcholinesterase and plasma pseudocholinesterases. This produces a short duration of action, typically 5-10 minutes long, unlike nondepolarizing blockers, which...
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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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Related Experiment Video

Updated: Apr 12, 2026

Ultrasound-guided Botulinum Toxin-A Injections: A Method of Treating Sialorrhea
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Ten Mistakes To Avoid When Injecting Botulinum Toxin.

R Ruiz-Rodriguez1, A Martin-Gorgojo1

  • 1Clínica Dermatológica Internacional, Madrid, España.

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|May 10, 2015
PubMed
Summary
This summary is machine-generated.

Learn the 10 common mistakes to avoid when receiving botulinum toxin injections for facial aging. This guide helps ensure a natural appearance and preserves facial expression after cosmetic procedures.

Keywords:
Botulinum toxin type AEnvejecimiento cutáneoFacial musclesMúsculos facialesRejuvenationRejuvenecimientoSkin agingToxina botulínica tipo A

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Area of Science:

  • Dermatology
  • Cosmetic procedures

Background:

  • Botulinum toxin injections are a leading cosmetic procedure for facial aging.
  • Combined with dermal fillers, they are a primary treatment for preventing and treating signs of aging.
  • Potential side effects include unnatural appearance and loss of facial expression.

Purpose of the Study:

  • To review 10 critical mistakes to avoid during botulinum toxin injections.
  • To discuss the impact of botulinum toxin on facial expressions, self-perception, and how others perceive us.

Main Methods:

  • Review of common errors in botulinum toxin administration.
  • Discussion of the psychological and social effects of altered facial expressions post-treatment.

Main Results:

  • Identification of 10 key errors in botulinum toxin injection techniques.
  • Analysis of how altered facial expressions affect subjective feelings and social perception.

Conclusions:

  • Avoiding specific injection mistakes can prevent unnatural results and preserve facial expressiveness.
  • Understanding the influence of botulinum toxin on facial communication is crucial for patient satisfaction and well-being.