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Related Concept Videos

Local Anesthetics: Clinical Application as Spinal Anesthesia01:11

Local Anesthetics: Clinical Application as Spinal Anesthesia

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Spinal anesthetics are given during lower abdomen and limb surgeries to block sensory and motor neurons. They are administered in the mid to low lumbar regions, primarily acting on the cauda equina's nerve roots. The blockade level depends on the local anesthetic (LA) concentration. Usually, low LA concentrations are sufficient to block sensory fibers, while only high LA concentrations block motor fibers. Other factors like injection volume and speed, the patient's posture, and the drug...
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General Anesthesia: Overview01:24

General Anesthesia: Overview

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Anesthesia is a medical procedure that uses drugs for CNS suppression to enable painless surgeries and procedures. The selection of anesthetics is influenced by their pharmacokinetic properties, side effects, and patient characteristics. Various types of anesthesia include general, local, regional, spinal, and inhalational.
General anesthesia induces unconsciousness in the whole body, while the others target specific areas or sensations. It is administered to minimize adverse effects, maintain...
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Local Anesthetics: Clinical Application as Epidural Anesthesia01:29

Local Anesthetics: Clinical Application as Epidural Anesthesia

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Epidural anesthetics are administered in the fat-filled epidural space, the outermost part of the spinal canal. This technique is commonly employed for pain management and anesthesia during lower abdomen and pelvis surgeries or labor and delivery.
Since epidural anesthetics can be infused through an epidural catheter, all types of drugs, including short-acting ones, can be administered. Chloroprocaine and lidocaine are examples of short and long-duration anesthetics, respectively. Bupivacaine...
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Stages of General Anesthesia01:22

Stages of General Anesthesia

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Various sedation levels offer significant advantages in facilitating procedural interventions for patients undergoing medical or invasive surgical procedures. These levels span from anxiolysis to general anesthesia, providing a spectrum of sedative effects to cater to specific patient needs. Anxiolysis reduces anxiety and is achieved through minimal sedation, enabling patients to remain awake and responsive while feeling more at ease during the procedure. This level can benefit minor...
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Local Anesthetics: Clinical Application as Intravenous Regional Anesthesia01:16

Local Anesthetics: Clinical Application as Intravenous Regional Anesthesia

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Intravenous regional anesthesia or the Bier block technique is used to anesthetize a specific limb or extremity. It uses exsanguinated or blood-drained vessels to transport local anesthetics or LAs to the peripheral nerve trunks. Lidocaine without vasoconstrictors like epinephrine is most commonly used for this technique. Other drugs used are prilocaine, ropivacaine, and chloroprocaine. Bupivacaine is not recommended for this technique due to its high cardiac toxicity.
One of the advantages of...
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Parenteral Anesthetics: Overview01:24

Parenteral Anesthetics: Overview

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Intravenous anesthetics are drugs administered parenterally to induce anesthesia or sedation. Propofol is a widely used agent formulated as a 1% emulsion in soybean oil, glycerol, and egg phosphatide. It induces rapid anesthesia primarily due to its rapid distribution from the bloodstream to target tissues and is metabolized in the liver. However, it can cause significant pain on injection and hypertriglyceridemia. Fospropofol, a water-based prodrug of propofol, lacks these adverse effects.
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General compared with spinal anesthesia for total hip arthroplasty.

Bryce A Basques1, Jason O Toy1, Daniel D Bohl1

  • 1Department of Orthopaedics and Rehabilitation, Yale University School of Medicine, 800 Howard Avenue, New Haven, CT 06510. E-mail address for J.N. Grauer: jonathan.grauer@yale.edu.

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General anesthesia for total hip arthroplasty led to more adverse events and longer operating times compared to spinal anesthesia. These findings suggest spinal anesthesia may offer a safer perioperative profile for hip replacement surgery.

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Area of Science:

  • Orthopedic Surgery
  • Anesthesiology
  • Health Outcomes Research

Background:

  • Total hip arthroplasty (THA) is a common procedure with anesthetic options including general and spinal anesthesia.
  • Choosing the appropriate anesthetic impacts patient safety and recovery.
  • Limited comparative data exists on perioperative outcomes between general and spinal anesthesia for primary THA.

Purpose of the Study:

  • To compare perioperative outcomes between general anesthesia and spinal anesthesia in patients undergoing primary elective total hip arthroplasty.
  • To identify potential risks and benefits associated with each anesthetic type in THA.
  • To inform clinical decision-making regarding anesthetic choice for THA.

Main Methods:

  • Retrospective analysis of 20,936 patients undergoing primary elective THA from 2010-2012.
  • Data sourced from the American College of Surgeons National Surgical Quality Improvement Program database.
  • Propensity-adjusted multivariate analysis used to compare operative times, length of stay, adverse events, and readmissions between general and spinal anesthesia groups.

Main Results:

  • General anesthesia (60.9%) was associated with increased operative time (+12 min) and postoperative room time (+5 min) compared to spinal anesthesia (39.1%).
  • General anesthesia significantly increased the odds of adverse events, including prolonged ventilator use, unplanned intubation, stroke, and cardiac arrest.
  • No significant differences were observed in preoperative room time, postoperative length of stay, or readmission rates between the two anesthetic groups.

Conclusions:

  • General anesthesia is linked to a higher incidence of perioperative adverse events in total hip arthroplasty.
  • Mildly increased operating room times were also associated with general anesthesia.
  • Spinal anesthesia may be a preferable anesthetic choice for primary elective total hip arthroplasty due to a potentially improved safety profile.