Recibido:
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Summary
Spinal epidural hematoma (SEH) is a known
complication of spinal surgery, but the incidence of
post-surgical SEHs that result in neurologic deficits is
extremely rare (0.1%). Patients that require multilevel
lumbar procedures and/or have a preoperative coagulo-
pathy are at a significantly higher risk of developing an
epidural hematoma. The introduction of higher dose of
low molecular weight heparin (LMWH) twice daily 30
mg regimen) increased the reported incidence of neu-
roaxial hematomas. Surgery performed within 8 hours
makes good or partial recovery of neurologic function.
Our patient was also started on higher dose of
LMWH and developed neurological deficits due to a
SEH following lumbar puncture. She underwent opera-
tion after six days and she had a mild recovery following
the operation.
Current administration of high doses of LMWH can
cause SEH even after a lumbar puncture, which was
performed without multiple attempts.
Although surgery performed within 8 hours makes
good or partial recovery of neurologic function, lami-
nectomy and epidural hematoma evacuation performed
after three days can also have successful results.
KEY WORDS: Lumbar. Epidural hematoma. Surgery.
LMWH. Myelography.
Hematoma lumbar epidural postpunción lumbar; in-
fluencia de dosis altas de LMWH y cirugía diferida
Resumen
El hematoma espinal epidural (HEE) es una compli-
cación conocida en la cirugía espinal, pero la incidencia
del HEE que da lugar a déficit neurológico es muy rara
(0,1%). Los pacientes que necesitan intervenciones en
varios niveles lumbares y/o que tienen una coagulopatía
preoperatoria tienen un riesgo significativamente mayor
de desarrollar un hematoma epidural. La introducción
de dosis altas de heparina de bajo peso molecular
(HBPM), (30 mgrs. dos veces al día) aumentan la inci-
dencia de hematomas neuroaxiales. La cirugía llevada a
cabo dentro de las 8 horas da lugar a un recuperación
buena o parcial de la función neurológica.
Nuestro paciente fue tratada con dosis altas de
HBPM y desarrolló un déficit neurológico debido a un
HEE, después de una punción lumbar. Fue operada al
cabo de seis días y se recuperó parcialmente de su déficit
después de la intervención.
La administración actual de dosis altas de HBPM
puede dar lugar a HEE, incluso después de una punción
lumbar, que se hizo en pocos intentos.
Aunque la cirugía realizada en las primeras 8
horas produce una recuperación buena o parcial, la
laminectomía y evacuación del hematoma llevada a
cabo después de tres días también puede dar lugar a
buenos resultados.
PALABRAS CLAVE: Lumbar. Hematoma epidural. Ciru-
gía. HBPS. Mielografía.
Introduction
Multilevel lumbar procedures, anatomic abnormalities,
traumatic puncture with multiple attempts, and coagulation
disorders or anticoagulation therapy are significant risk fac-
tors for spinal epidural hematoma development
11,5
. As well
as most of them are clinically insignificant, but may cause
severe and rapid neurological deterioration.
We report a case of a woman developing epidural
hematoma with neurological deterioration three days after
Lumbar epidural hematoma following lumbar puncture: the role of high dose
LMWH and late surgery. A case report
D. Gurkanlar; C. Acikbas; G.K. Cengiz and R. Tuncer
Department of Neurosurgery. Akdeniz University. School of Medicine. Antalya. Türkiye.
26-06-05. Aceptado26-04-06
Abbreviations. CMT: computerized myelo-tomography. CT: com-
puterized tomography. HBPM: heparina de bajo peso molecular.
HEE: hematoma epidural espinal. LMWH: low molecular weight
heparin. MRI: resonancia magnética. SEH: spinal epidural
hematoma.
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a lumbar puncture, whose hematoma was removed by lami-
nectomy.
Case
A 51-year-old woman suffering from right leg pain
was admitted to our hospital. Her neurologic examination
revealed only the right positive straight leg raising test, at
45°. The patient had had atrial and mitral valve replacement
operations in 1988 and 1998. Therefore we could not per-
form magnetic resonance imaging (MRI). We could only
performed lumbar myelography and computerized myelo-
graphy (CTM) three weeks after stopping her coumadine
treatment. The patient received low molecular weight
heparin (LMWH) (60/day) during this period and her
coagulation variables were in normal limits. Lumbar mye-
logram which was performed at L3-4 level, demonstrated
abrupt termination of the right L5 root (Figure 1) and CTM
showed the posterolateral disc herniation which prevented
filling of the nerve root (Figure 2). After this examination,
conservative therapy was started due to the absence of sig-
nificant neurologic deficit and the patient was discharged.
After the lumbar puncture, the patient began to suffer from
persistent low back pain, progressive right leg weakness
and numbness. Although her motor weakness began imme-
diately after the lumbar puncture, it was apparent on the
third day of the course. She was admitted to our outpatient
clinic again on the sixth day of lumbar puncture and her
neurological examination revealed 2/5 motor strength of
right lower extremity, hypoesthesia below L1 level and
loss of Achilles and patellar reflexes. The CT study of the
lumbar region revealed a right dorsolateral isodense mass
Lumbar epidural hematoma following lumbar puncture: the role of HIGH dose lmwh and late surgery. A case report
Figure 1. Lumbar myelogram demonstrating abrupt termi-
nation of the right L5 root.
Figure 2. CTM showing the posterolateral disc herniation
which prevented filling of the nerve root.
Figure 3. CT of the lumbar region revealed a right
dorsolateral isodense mass causing compression of the
techal sac at L2-3 level.
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causing compression of the techal sac at L2-3 level (Figure
3) and a right sided L2 hemiparcial laminectomy performed
immediately. A soft red-bluish mass, without fluid parts,
measuring nearly 4 cm, extending from right dorsolateral
to the left dorsolateral side of the tecal sac, with a capsule
was reached following flavectomy and decompression,
by evacuation of the hematoma, was performed. After
the hematoma removal we recognized that the lumbar
puncture had been performed at the L2-3 space. The final
pathological diagnosis of the operation material was orga-
nized hematoma. Postoperative CT revealed no hematoma
at operation site. Immediately after the operation the back
pain resolved. The strength of the right lower extremity
was 3/5 proximally and 2/5 distally, at discharge.
Discussion
Spinal epidural hematoma (SEH) is a known complica-
tion of spinal surgery1
1,9,16,18
, but the incidence of postope-
rative SEHs that result in neurologic deficits is extremely
rare. Lawton et al
14
reported the incidence rate to be 0.1%.
Postoperative epidural hematoma should be suspected in
the patient who either demonstrates a new postoperative
neurologic deficit or develops deficits in the immediate
postoperative period that are consistent with cauda equina
syndrome
11
. SEH will cause spinal pain and root pain,
followed by a progressive neurologic deterioration, whose
features will be dependent on the level of compression
9
.
SEH is a significant cause of morbidity and needs to
be diagnosed as early as possible because the timing of
decompression and evacuation of the hematoma is criti-
cal
11
.
Patients that require multilevel lumbar procedures
and/or have a preoperative coagulopathy are at a signifi-
cantly higher risk of developing an epidural hematoma
11
.
Anatomic abnormalities, traumatic puncture with multiple
attempts, and coagulation disorders or anticoagulation
therapy are also risk factors for spinal epidural hematoma
development
5
. Spontaneous epidural hematomas have been
reported in those with liver and autoimmune disease
13,17
.
They have also been associated with thrombolytic therapy
and anticoagulants
1,9,12
.
Anticoagulation therapy especially with LMWH and
coagulation disorders are the main risk factors in the
formation of spinal epidural hematoma following lumbar
puncture
19
. The introduction of higher dose of LMWH
(twice daily 30 mg regimen) in the United States increased
the reported incidence of neuroaxial hematomas compared
with what was reported in Europe (30 mg/day)
6
.
Although the lumbar puncture was performed in one
attempt and the coagulation variables were in normal
ranges, an epidural hematoma and related symptoms occu-
rred in our patient probably due to a coagulopathy.
Vandermeulen et al
23
found that most patients with an
SEH that were decompressed surgically within 8 hours
made good or partial recovery of neurologic function. We
operated our patients on the sixth day of complaints howe-
ver it is too late for surgery according to Vandermeulen
and Delamarten
3,23
. After the surgery the patient was free
of pain and her neurologic examination revealed marked
improvement of the neurologic deficits.
The insertion site (thoracic vs. lumbar) and the midline
or paramedian approach of the epidural space are some-
times believed to increase the risk of epidural bleeding.
There is no evidence that the risk for hematoma formation
is lower with a midline compared with paramedian appro-
ach
22,7
. However, the paramedian technique may need more
attempts and have o lower success rate compared with the
midline technique
10
.
Bleeding from smaller vessels of the ligamentum
flavum
15,21
and arterial bleeding can also cause spinal
epidural hematomas
8
. Some authors also believe that
lumbar epidural bleeding could result from rupture of
an epidural vein either by a sudden increase in the intra-
abdominal pressure impacting on a previously damaged or
weakened vein, or by mild trauma
2,4,20
.
In our case the lumbar puncture was performed at L2-3
space instead of L4-5 in one attempt. However, we could
not have found any exact data about lumbar puncture which
if it is performed at higher lumbar levels increases epidural
hematoma occurrence.
Conclusion
Current administration of high doses of LMWH can
cause SEH even after a lumbar puncture, which was per-
formed without multiple attempts.
Although surgery performed within 8 hours made good
or partial recovery of neurologic function, laminectomy
and epidural hematoma evacuation performed after three
days can also have successful results.
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Gurkanlar, D.; Acikbas, C.; Cengiz, G.K.; Tuncer, R.:
Lumbar epidural hematoma following lumbar puncture:
the role of HIGH dose lmwh and late surgery. A case report.
Neurocirugía 2007; 18: 52-55.
Corresponding author: Dr. Doga Gurkanlar M.D. Yeşilbahçe
Mahallesi. Portakal Çiçeği Antalya. Türkiye.
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