Anesthesiology clinics
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Maternal deaths in developed countries continue to decline and are rare. Maternal mortality statistics are essentially similar in the United States and United Kingdom. However, the situation is completely different in developing countries, where maternal mortality exceeds 0.5 million every year. This article not only assesses morbidity risks in some of the leading causes of maternal death but also highlights strategies to minimize the risks and to prevent maternal morbidity and mortality.
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Infection is the commonest cause of serious neurologic sequelae of neuraxial anesthesia. The incidence depends on operator skill and patient population. Meningitis, a complication of dural puncture, is usually caused by viridans streptococci. ⋯ Epidural abscess is a complication of epidural catheterization, route of entry the catheter track and the organism usually the staphylococcus. Principal risk factors are prolonged catheterization, poor aseptic technique and traumatic insertion. Prevention includes wearing a mask, using a full sterile technique, avoiding prolonged catheterization and prescribing antibiotics in a high-risk situation.
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Remifentanil has been proposed as the most suitable systemic opioid for use in obstetrics. Although the onset and offset are rapid, it cannot achieve maximum effect within the time period of a single uterine contraction. ⋯ As an adjunct to general anesthesia, it is successful in blunting responses to airway manipulation and providing hemodynamic stability in high-risk women. Neonatal effects when used in labor are minimal, but when combined with general anesthesia neonatal depression is unpredictable and more likely with an infusion dose greater than 0.1 microg/kg/min.
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Anesthesiology clinics · Mar 2008
ReviewUltrasound-facilitated epidurals and spinals in obstetrics.
Regional anesthesia is currently the gold standard of practice for pain control in obstetrics. Failures and complications of regional anesthesia can be related to many causes, one of the most important being the blind nature of such techniques. ⋯ The use of preprocedure ultrasound imaging or, eventually, real-time ultrasound guidance should improve not only clinical practice, but also teaching. This article describes the techniques, challenges, and benefits related to the use of ultrasound in guiding lumbar spinals and epidurals.
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Painful conditions of the musculoskeletal system, including myofascial pain syndrome, constitute some of the most important chronic problems encountered in a clinical practice. A myofascial trigger point is a hyperirritable spot, usually within a taut band of skeletal muscle, which is painful on compression and can give rise to characteristic referred pain, motor dysfunction, and autonomic phenomena. ⋯ Invasive treatments for myofascial trigger points include injections with local anesthetics, corticosteroids, or botulism toxin or dry needling. The etiology, pathophysiology, and treatment of myofascial trigger points are addressed in this article.