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Blood and Nerve Supply to the Bones01:29

Blood and Nerve Supply to the Bones

Bones are dynamic organs that require a rich supply of oxygen and nutrients. Around 5% to 10% of the cardiac output supplies blood to the bones. A typical long bone has three main sources: the nutrient artery, the metaphyseal and epiphyseal arteries, and the periosteal arteries.
Nutrient Artery
The nutrient artery is the main blood vessel that enters the diaphysis via the nutrient foramen. While most long bones have only one nutrient foramen, large bones, such as the femur, may have two. This...
Analgesia and Pain Management01:25

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Pain is critical to various clinical pathologies, provoking an urgent need for effective management. Pain, whether acute or chronic, is a complex neurochemical process. Its alleviation depends on the type, with nonopioid analgesics effective for mild to moderate pain, such as musculoskeletal or inflammatory pain, while neuropathic pain responds best to anticonvulsants, tricyclic antidepressants, or serotonin/norepinephrine reuptake inhibitors. For severe acute or chronic pain, opioids may be...
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Synthetic and semisynthetic opioids are pivotal in pain management and tackling opioid addiction. Semisynthetic opioids, including morphinans (morphine derivatives), oxycodone, oxymorphone, hydrocodone, and hydromorphone, have improved pharmacokinetic profiles compared to morphine. Additionally, heroin and 6-MAM (6-Monoacetylmorphine) show better CNS penetration than morphine due to heightened lipid solubility. Hydromorphone, a potent opioid, undergoes hepatic metabolism to form the active...
Acute Pancreatitis I: Introduction01:27

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Pancreatitis is inflammation of the pancreas, an organ located behind the stomach. It can be either acute or chronic.
Acute pancreatitis is characterized by rapid inflammation of the pancreas, often caused by factors like gallstone blockage or excessive alcohol consumption. Chronic pancreatitis, on the other hand, is a slow, progressive inflammation that may result from long-term alcohol abuse, obstructions in the pancreatic duct, or genetic factors.
The causes of acute pancreatitis include:
Pain01:20

Pain

Pain serves as a critical warning signal that alerts the body to potential or actual harm. When mechanical pressure on the skin is intense, such as from a sharp pinch, the sensation transitions from touch to pain. Similarly, extreme temperatures, like a hot pot handle, convert the sensation of heat into pain. Pain can also result from overstimulation of other senses, such as blinding light, loud noise, or the intense heat from habañero peppers. This ability to sense pain is essential for...
Acute Pancreatitis I: Introduction01:25

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Acute pancreatitis is the sudden inflammation of the pancreas caused by the early activation of digestive enzymes, leading to the autodigestion of pancreatic tissue. This results in local inflammation and, in severe cases, systemic complications.EtiologyUnderstanding the underlying causes is crucial, as identifying the etiology guides treatment and anticipates complications. Acute pancreatitis can be triggered by various factors, typically grouped into the following clinical categories.Biliary...

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Video Experimental Relacionado

Updated: Jun 26, 2026

Determining heat and mechanical pain threshold in inflamed skin of human subjects
13:21

Determining heat and mechanical pain threshold in inflamed skin of human subjects

Published on: January 14, 2009

Dolor agudo agudo es el dolor agudo.

D B Carr1, L C Goudas

  • 1Department of Anesthesia and Medicine, Tufts University School of Medicine, New England Medical Center, Boston, MA 02111, USA. dcarr02@emerald.tufts.edu

Lancet (London, England)
|June 22, 1999
PubMed
Resumen
Este resumen es generado por máquina.

El manejo eficaz del dolor agudo es crucial para la recuperación del paciente y la prevención del dolor crónico. Las estrategias de analgesia mejoradas, incluidos los métodos farmacológicos y no farmacológicos, son esenciales después de la cirugía.

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Área de la Ciencia:

  • Anestesiología Anestesiología.
  • Manejo del dolor Manejo del dolor.
  • La neurocirugía es la neurocirugía.

Sus antecedentes:

  • Históricamente, el manejo del dolor postoperatorio implicaba la administración tardía de analgésicos, lo que llevaba a un sufrimiento significativo del paciente.
  • Casi la mitad de los pacientes quirúrgicos experimentan dolor agudo de moderado a severo, lo que afecta la recuperación y aumenta los riesgos de complicaciones.

Objetivo del estudio:

  • Para describir el proceso del dolor agudo. dolor agudo.
  • Esbozar medidas para controlar el dolor agudo utilizando intervenciones farmacológicas y no farmacológicas.

Principales métodos:

  • Revisión de las prácticas actuales en el cuidado post-anestesia.
  • Discusión de estrategias de manejo del dolor basadas en drogas y no basadas en drogas.

Principales resultados:

  • El control inadecuado del dolor agudo puede prolongar las estancias hospitalarias y conducir a complicaciones como la neumonía.
  • El dolor agudo puede causar cambios neuronales a largo plazo, lo que contribuye al dolor crónico y la angustia psicológica.

Conclusiones:

  • El control avanzado del dolor agudo es vital para los resultados de los pacientes y la reducción de los costos de atención médica.
  • Existen similitudes entre el dolor agudo y otros tipos de dolor, lo que sugiere enfoques unificados de manejo.