Acute pain

2021 ◽  
pp. 1151-1180
Author(s):  
Adrian Dashfield ◽  
David Kibblewhite

This chapter discusses the management of acute pain. It begins with an introduction which describes the benefits of acute pain management and the measurement of pain. Analgesic drugs are then described, including paracetamol; non-steroidal anti-inflammatory drugs (NSAIDs), and opioids (including their comparative efficacy). Patient-controlled analgesia (PCA), epidural analgesia, and continuous peripheral nerve blockade are described. Transcutaneous electrical nerve stimulation (TENS) and acupuncture are discussed. The management of the patient with persistent pain and a substance misuse disorder is also discussed. The chapter concludes with a discussion of non-opioid adjuvant analgesics.

Author(s):  
Adrian Dashfield

This chapter discusses the management of acute pain. It begins with an introduction which describes the benefits of acute pain management and the measurement of pain. Analgesic drugs are then described, including paracetamol, non-steroidal anti-inflammatory drugs, and opioids (including their comparative efficacy). Patient-controlled analgesia, epidural analgesia, and continuous peripheral nerve blockade are described. Transcutaneous electrical nerve stimulation and acupuncture are discussed. The management of the patient with a substance misuse disorder is discussed. The chapter concludes with a discussion of non-opioid adjuvant analgesics.


Author(s):  
Adrian Dashfield

This chapter discusses the management of acute pain. It begins with an introduction which describes the benefits of acute pain management and the measurement of pain. Analgesic drugs are then described, including paracetamol, non-steroidal anti-inflammatory drugs, and opioids (including their comparative efficacy). Patient-controlled analgesia, epidural analgesia, and continuous peripheral nerve blockade are described. Transcutaneous electrical nerve stimulation and acupuncture are discussed. The management of the patient with a substance misuse disorder is discussed. The chapter concludes with a discussion of non-opioid adjuvant analgesics.


2014 ◽  
Vol 2014 ◽  
pp. 1-8 ◽  
Author(s):  
Diana Cavalcante Miranda de Assis ◽  
Êmyle Martins Lima ◽  
Bruno Teixeira Goes ◽  
João Zugaib Cavalcanti ◽  
Alaí Barbosa Paixão ◽  
...  

We investigated the effect of two frequencies of transcutaneous electrical nerve stimulation (TENS) applied immediately after lesion on peripheral nerve regeneration after a mouse sciatic crush injury. The animals were anesthetized and subjected to crushing of the right sciatic nerve and then separated into three groups: nontreated, Low-TENS (4 Hz), and High-TENS (100 Hz). The animals of Low- and High-TENS groups were stimulated for 2 h immediately after the surgical procedure, while the nontreated group was only positioned for the same period. After five weeks the animals were euthanized, and the nerves dissected bilaterally for histological and histomorphometric analysis. Histological assessment by light and electron microscopy showed that High-TENS and nontreated nerves had a similar profile, with extensive signs of degeneration. Conversely, Low-TENS led to increased regeneration, displaying histological aspects similar to control nerves. High-TENS also led to decreased density of fibers in the range of 6–12 μm diameter and decreased fiber diameter and myelin area in the range of 0–2 μm diameter. These findings suggest that High-TENS applied just after a peripheral nerve crush may be deleterious for regeneration, whereas Low-TENS may increase nerve regeneration capacity.


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