Related Experiment Video

Updated: Aug 11, 2026

Acupoint Needle-Embedding Combined with Ironing Therapy for Postoperative Pain After Anal Surgery
05:39

Acupoint Needle-Embedding Combined with Ironing Therapy for Postoperative Pain After Anal Surgery

Published on: June 23, 2023

The effect of relaxation on postoperative muscle tension and pain

N Wells

    Nursing Research
    |July 1, 1982
    PubMed

    Related Concept Videos

    Classification of Skeletal Muscle Relaxants01:28

    Classification of Skeletal Muscle Relaxants

    Skeletal muscle relaxants are a group of drugs that can reduce muscle stiffness and induce temporary paralysis to relieve pain. These agents can act centrally to reduce muscle tone or spasms in painful conditions such as multiple sclerosis (MS), amyotrophic lateral sclerosis (ALS), or spinal injuries; they are called antispasmodics or spasmolytics.
    Peripherally acting skeletal muscle relaxants interfere with the neurotransmission at the neuromuscular end plate to induce paralysis during...
    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...
    Skeletal Muscle Relaxants: Adverse Effects01:21

    Skeletal Muscle Relaxants: Adverse Effects

    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.
    Unlike...
    Skeletal Muscle Relaxants: Therapeutic Uses01:31

    Skeletal Muscle Relaxants: Therapeutic Uses

    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...
    Peripherally and Centrally Acting Muscle Relaxants: A Comparison01:09

    Peripherally and Centrally Acting Muscle Relaxants: A Comparison

    Skeletal muscle relaxants can target the central nervous system [CNS] to reduce muscle tension or act directly at the neuromuscular junction to induce temporary paralysis. These two classes of muscle relaxants are called centrally acting muscle relaxants and peripherally acting muscle relaxants. They differ in their action, mechanism, administration route, and clinical uses.
    Centrally acting muscle relaxants can be further divided into spasmolytic and antispasmodic drugs. Spasmolytic drugs,...
    Relaxation of Skeletal Muscles01:29

    Relaxation of Skeletal Muscles

    The period of muscle contraction primarily influences the duration of stimulation at the neuromuscular junction (NMJ), the presence of free calcium ions in the sarcoplasm, and the availability of energy or ATP to support contractions.
    When an action potential reaches the axon terminal, it depolarizes the membrane and opens voltage-gated sodium channels. Sodium ions enter the cell, further depolarizing the presynaptic membrane. This depolarization causes voltage-gated calcium channels to open.