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At least 163 records · Page 9Linked to original sources
PubMed2005

[Diagnosis in cerebrospinal fluid: possible applications in neurological practice].

Examination of the cerebrospinal fluid (CSF) is part of the modern diagnostics of many neurological diseases. When an acute or chronic meningitis or encephalitis is suspected, the distinction between an acute viral and a bacterial intrathecal infection can generally be rapidly made via examination of the CSF. In case of a chronic infection this will determine the direction of further microbiological analysis. When there are clinical indications for subarachnoid haemorrhage but no abnormalities on the CT-scan, it can be either demonstrated or excluded by means of spectrophotometric analysis of blood pigments in the CSF. In case of possible multiple sclerosis (MS) and contraindications for MRI, or if the combination of the clinical symptoms and MRI does not yield a definitive diagnosis, then the demonstration of unique oligoclonal IgG-bands in the CSF is an important parameter in confirming a diagnosis of 'MS'. In practice, metastases to the leptomeninges are often detected by means of (repeated) cytopathological analysis of the CSF, which has a higher sensitivity and specificity than MRI. Examination of the CSF also plays an important role in the diagnosis of (hereditary) metabolic encephalopathies in childhood. In case of watery discharge from the nose or ear following trauma or neurosurgery, it can be determined whether or not this is leaking CSF. Analysis of certain brain-specific proteins in the CSF can contribute to the differential diagnosis of dementia syndromes. The added diagnostic value of examination of the CSF in hypokinetic rigidity syndromes is still unclear. The complications of a spinal puncture often remain limited to post-puncture headache. Contraindications include intracranial space-occupying abnormalities, compression of the spinal cord, haemorrhagic diathesis and abnormalities around the puncture site.

Acute Disease↗
PubMed1998

Combined effect of patient variables on sensory level after spinal 0.5% plain bupivacaine.

BACKGROUND: The combined effect of age, weight, height, and vertebral column length (VCL) on the distribution of isobaric 0.5% bupivacaine within the subarachnoid space is unclear. The aim of the present study was to evaluate the combined influence of these patient variables on the upper sensory level and on its predictability. METHODS: In 100 patients who were above the age of 49 years, the age, weight, height, VCL, body surface (BS), and body mass index (BMI) were noted. Spinal puncture and subarachnoid drug administration were standardized. Cephalad spread of spinal anaesthesia (SA) was assessed by loss of temperature sensation and pinprick discrimination 15, 30, 60, 90, and 120 min following subarachnoid injection of 18 mg of plain 0.5% bupivacaine. Linear regression analysis was performed for each of the patient variables and the cephalad segmental spread of anaesthesia. Multiple regression analysis was used to test for combined correlation between patient variables and the sensory level of SA. RESULTS: No linear correlation was found between the patient variables and the sensory level of anaesthesia. In contrast, multiple regression analysis revealed that age (P<0.01), weight (P<0.05), and height (P<0.01) significantly contributed to the spread of anaesthesia. A squared multiple comparison coefficient between 0.10 and 0.21, however, is an indication that the predictive value of the combined variables remained rather low. CONCLUSION: Multiple regression analysis revealed that age, weight, and height significantly correlated with the sensory level after subarachnoid injection of plain bupivacaine. The low predictive value suggests that patient factors other than age, weight, or height add to cephalad spread of SA.

Aged↗
PubMed1996

Incidence of postdural puncture headache following spinal anaesthesia for lower segment caesarean section with the 25 gauge polymedic spinal needle.

The incidence of postdural puncture headache (PDPH) was studied in in-patients after spinal anaesthesia with 25 gauge Polymedic needle (Sprotte-like), for lower segment caesarean section (LSCS). A total of 281 women who underwent LSCS were studied, at the maternity unit of St. Peter's Hospital, Chertsey, Surrey, U.K. Of these, 125 women had a spinal, 93 general and 63 epidural anaesthesia. All the women were questioned about the presence of headache between the second and fourth post-operative day. Its severity was assessed with a visual analogue scale. Women who had an epidural or a general anaesthesia were used as controls. Out of 281 women studied, none complained of PDPH. Four women in the spinal anaesthetic group, complained of headache which did not have the characteristics of PDPH. The 25 gauge Polymedic spinal needle appears to be safe and satisfactory for performing spinal anaesthesia for LSCS.

Adult↗
PubMed1999

[Nosocomial meningitis in the adult].

Cerebrospinal fluid (CSF) has anti-infectious defense abilities similar to those of the serum of a neutropenic patient. A septic inoculation as in case of nosocomial meningitis (NM), results rapidly in microbial proliferation with major alterations to the blood brain barrier, cerebral oedema and loss of autoregulation of the cerebral blood flow. Arterial hypotension during NM may induce focal or global cerebral ischaemia. The incidence of NM is increasing, staphylococci and Gram negative bacilli being the most frequent pathological agents. Clinical symptoms are not specific in this postoperative and post-traumatic context. In this context, the analysis of pleocytosis and the increased protein content of CSF is disturbing. Numerous clinical conditions may cause NM. Among them, NM from spinal puncture is an important issue for anaesthetists, while combined epidural and spinal anaesthesia carry the highest risks. Cutaneous contamination plays a major role. Half of the post-operative infections after neurosurgery are due to NM, and CSF leakage, iterative operations and surgery in contaminated conditions are the main risk factors. Antibioprophylaxis for postoperative NM is validated for clean and clean-contaminated surgery. Some consider that only procedures of more than two hours require this prophylaxis. Prophylaxis is targeted on staphylococci. Other preventive measures (drainage of less than 24 h, head shaving and prevention of CSF leakage) are of major importance. Antibiotherapy should be guided by the same considerations as for community acquired meningitis, associated with specific issues in the surgical context (presence of foreign material and CSF blockage).

Animals↗
PubMed2006

[Morphological findings in MRI to be considered in perfoming spinal and epidural anesthesia].

The spinal cord and cauda equina move in the subarachnoid space by changing positions. The subarachnoid space is compressed from the dorsal side by epidural injection. At the end of gestation, the subarachnoid space is compressed from the ventral side by the engorged venous plexus. Idiopathic epidural lipomatosis is observed almost exclusively in the obese population. In the case of lipomatosis, the subarachnoid space is compressed by increased extradural fat around the thecal sac. We have had some severe cases of spinal canal stenosis in whom it is difficult to perform the spinal puncture. The authors showed some MR images and discussed morphological issues for spinal or epidural anesthesia.

Adult↗
PubMed1998

[Cervical epidural hematoma caused by cervical twisting after epidural anesthesia: a case report].

A case of cervical epidural hematoma caused by cervical twisting after epidural anesthesia was reported. A 41-year-old man who had had anterior fusion of C5 - 7 using a plate due to cervical spondylosis fifteen months before admission, had undergone epidural anesthesia through the C7/T1 interspace without difficulty for shoulder pain in a pain clinic. Two hours after injection, he complained of severe pain in his neck and both shoulders just after cervical twisting as was his custom. Within minutes he noted paresis of his left extremities. Neurological examination on admission revealed left side dominant tetraparesis and loss of pain and temperature sensations below the level of T4 on his right side. Laboratory data analysis and coagulation tests were normal. CT scans and MRI demonstrated an epidural hematoma with a small amount of air extending from C3 to the upper margin of C7. Four hours after the onset, a laminoplasty was performed from C3 to C7 with total removal of the hematoma. No bleeding site or any vascular abnormality was found to account for the hematoma formation. He was discharged with good recovery after operation. Most of the reported epidural hematomas associated with epidural anesthesia were related to coagulopathy, anticoagulant therapy or difficult puncture. On review of the literature, this is the first case of spinal epidural hematoma cause by cervical twisting after spinal anesthesia and which was without impaired coagulation or difficult spinal puncture. Cervical epidural hematoma should be considered as a possible complication in patients with pain or neurological deficits after some cervical manipulations.

Adult↗
PubMed1986

Neurological deterioration after lumbar puncture below complete spinal subarachnoid block.

The risk of neurological deterioration after removal of cerebrospinal fluid below the level of a complete spinal subarachnoid block is generally accepted. The actual incidence of deterioration after lumbar puncture in the presence of a complete block remains unknown. The present retrospective case analysis includes a review of 100 patients found to have complete block on myelography: 50 cases with a lumbar puncture and 50 cases with a C1-2 puncture. Each group consisted of a similar age range, neurological status prior to myelography, level of block, and nature of disease. Seven patients (14%) had significant neurological deterioration after lumbar puncture, while no deterioration was seen after a C1-2 puncture. A summary of those cases in which deterioration followed lumbar puncture is presented and the possible pathophysiology is discussed. From this analysis, the estimated risk of downward spinal coning after lumbar puncture below a complete spinal subarachnoid block caused by a mass lesion is at least 14%.

Abscess↗
PubMed1997

[Spinal and regional anesthesia in bacteremia].

Bacteraemia and septicaemia are generally thought to be relative or absolute contraindications for central neural axis (CNA) blocks. Postulated mechanisms for haematogenous infection of the central nervous system (CNS) caused by subarachnoid or epidural puncture might be an accidental vessel puncture, a change of pressure in the subarachnoid space, and the induction of a "locus minoris resistentiae." Infectious complications of diagnostic lumbar puncture, spinal or epidural anaesthesia are very rare. Although in animals meningitis can be induced by subarachnoid puncture during bactaeremia, there is no study that proves an increased risk for bacteraemic patients. Transient bacteraemia is common, especially in urological and obstetrical-gynecological procedures that are often done in regional anaesthesia, but the incidence of infectious complications is low. This review investigates the few published cases in which a haematogenous infection of the CNS may have been caused by regional anaesthesia. Based on current knowledge, bacteraemia cannot be an absolute, but only a relative contraindication for CNA blocks. Antibiotic chemoprophylaxis should be given before the puncture and the patients must be closely followed after the anaesthesia, particularly for the development of spinal epidural abscess. Because of the possibly increased risk of infectious complications, informed consent should be obtained from the patient.

Anesthesia, Conduction↗