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from MRC/BH |
Abstracts of Papers Presented at
the 114th Research Meeting of The Medical Research Centre of Bombay
Hospital, Convenor Dr. HL Dhar.
Abstract of papers presented
at the 115th Research Meeting of The Medical Research Centre of
Bombay Hospital, Convenor Dr. HL Dhar.
Abstracts of papers presented
at the 116th Research Meeting of The Medical Research Centre of
Bombay Hospital, Convenor Dr. HL Dhar. |
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1. An unusual case of stroke
Sangamesh B Bhagavati, BS Singhal |
31/M, Rt. handed, Engineer, Oct. 2003 - C/o Neck pain
and occipital headache - 1 month. On 10/11/2003 - had
an episode of blurring of vision associated with headache,
slurring of speech and vomiting - Lasting 3-4 hours. On
22/11/2003 - had acute onset of blurring of vision associated
with gait ataxia, headache, vomiting and slurred speech.
Became drowsy 3 hours later. CT - Brain done was normal.
Next day MR - Brain showed lesions in B/L thalami, hypothalami,
Lt. cerebral peduncle and Sup. cerebellar hemispheres.
Started on anti-platelets and clexane 60 mg. S/c bid,
then shifted to BH. Past H/o - used to do jerky twisting
movements of neck. On Ex ( 25/11/2003) - Conscious obeys
verbal commands, had restricted horizontal eye movements
with absence of vertical movements with extensor plantars.
Relevant investigations were normal except for elevated
homocysteine levels. Same treatment continued. MR - Angio
showed absence of flow in Lt. VA, Lt. SCA, distal BA and
P1 segment of both PCA. No evidence of dissection. On
2/12/2003 - Pt sensorium worsened. Repeat MRA showed fresh
infarcts in Lt. inf cerebellar area with partial recanalisation
of Lt. VA but distal basilar and P1 segment of B/L PCA
were not seen. Same day DSA done showed thrombus at BA
bifurcation, Prox. SCA and B/L PCA. Prox., thrombotic
occlusion of Lt VA with normal distal flow with evidence
of dissection in Lt. VA. ASA was arising distal to dissection.
1000 units Heparin injected into Lt VA during DSA. On
3/12/2003 - Pt sensorium worsened further, became unconscious.
Urgent CT - Brain showed mod. cerebellar haematoma with
raised ICT. Anti-platelets and LMWH stopped. Pt underwent
post. fossa decompression with insertion of Rt ventricular
drain. After 3 days, pt gradually regained consciousness
with spontaneous eye opening and occasionally obeying
simple verbal commands. Following neuro-surgical intervention,
pt has developed CNS-infection and is currently undergoing
Rx for the same in ICU. |
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2. Prevalence of hypertension in the Parsi community
of Mumbai
Thomas Kuruvilla, Nadir E Bharucha |
Uncontrolled hypertension (HT) is an established risk
factor for the development of vascular diseases. Prevalence
varies in different communities and no such study has
been conducted in the Parsi community living in Mumbai,
India. The objective of this study was to determine the
prevalence of HT in this community.
We used a 1 in 4 random selection of subjects who were
³ 20 years of age. A questionnaire was administered
and the blood pressure (BP) was measured by a doctor.
HT was defined as diastolic blood pressure (DBP) >
90 mm Hg ± systolic pressure (SBP) > 140 mm
Hg. Isolated systolic hypertension (ISH) was defined as
SBP ³ 160 mm Hg with DBP < 90 mm Hg. Subsequently,
we reanalysed the data using current definition of ISH
as SBP ³ 140 mm Hg with DBP < 90 mm Hg.
Results
2879 subjects ³ 20 years of age were randomly selected
of which 2415 (84%) participated in the study (45.5% men
and 54.5% women). Prevalence of HT (including ISH) using
current criteria was 32.8% in men and 39.4% in women (mean
36.4%). The prevalence of ‘diastolic’ HT peaks
at the 50-59 years age group in both men (24.3%) and women
(24.2%). Prevalence of ISH and overall prevalence progressively
increases with age; in those ³ 70 years overall prevalence
was 52.8% in men and 72.9% in women. Prevalence of ISH
was 6.9% using the SHEP criteria and 19.5% (15% in men
and 23.3% in women) using the current criteria. The proportion
of hypertensives suffering from ISH increases with age;
in those ³ 70 years 75.6% of men and 82.1% of women
with HT had ISH rather than ‘diastolic’ HT.
Conclusion
This study shows that prevalence of HT in the Parsi community
is high with more than one-third the adult population
having HT. Prevalence of HT progressively increases with
age with more than 60% of those ³70 years having
HT. In the elderly, the major form of HT is ISH, with
more than 75% of hypertensives ³ 70 years having
ISH. The overall prevalence of HT, especially ISH, is
significantly more in women than in men. The study highlights
the need for regular screening to detect and treat HT
and ISH, conditions which are known to result in significant
morbidity and mortality when left untreated. |
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3. Mitroxantrone in multiple sclerosis
Geeta Bharia, BS Singhal |
Multiple sclerosis (MS) is an autoimmune disease involving
predominantly the white matter of the brain and spinal
cord. It is one of the common neurological disorders of
younger adults and substantial cause of neurological disability.
Immunosuppressive agents - Interferon beta - 1b, interferon
beta - 1 a and glatiramer acetate are approved for remitting
- relapsing multiple sclerosis. These drugs are expensive
and many patients in India cannot afford its cost of treatment.
Mitoxantrone is the first drug approved for the treatment
of secondary progressive MS and worsening relapsing-remitting
MS. We have used this drug in view of economical consideration
of our patients and also the toxicity of the drug is reported
to be low in the dosage used. Presentation considers use
of mitoxantrone in MS including its pharmacology, selection
criteria for treatment and potential for serious toxicity
in individual patients. An ongoing assessment is presented
an open study wherein, 13 patients till date have been
selectively administered least one dose of mitoxantrone,
given as 12 mg/m2 intravenously, every 3 months for a
duration of 24 months. We have 4 patients who have received
more than one dose of mitoxantrone. Clinical assessment
of using kurtze expanded durability score has shown disease
stabilization in these patients. Mitoxantrone may have
a beneficial effect of disease progression in patients
with relapsing MS whose clinical condition is worsening.
It may also reduce acute exacerbations in remitting relapsing
MS. |
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4. Study of MRI characteristics in clinically
definite multiple sclerosis in Indian patients
K Dayanand, BS Singhal |
No single clinical feature is diagnostic of multiple
sclerosis (MS). Obtaining objective evidence of dissemination
in space and time of vision either clinically or in combination
with laboratory or para-clinical (MRI, VEP and BAER) investigations
is essential for diagnosis of MS. MRI imaging is integrated
into diagnostic scheme in recent reviews because of its
unique sensitivity to pathologic change. Aim of the study
is to observe various MRI changes in central nervous system
in patients of MS diagnosed on clinical bases alone (CDMS
- clinically definite multiple sclerosis). Total of 85
patients (F:M 48:36) who were diagnosed to have clinically
definite MS were included in the study. Mean age in females
was 30 years and males 34 years. MRI scan of brain and
spinal cord was studied with respect to characteristic
lesions which are more likely MS. They were a) T2 W hyperintense
lesions - multiple > 9. b) 3 or more periventricular
lesions c) 1 or more infra-tentorial lesions. d) one or
more juxta cortical lesions. Pattern of gadolinium enhancement
of any. Repeat scans which were available in few patients
were looked for any fresh lesions appearing other time.
Our results show that 52.9% patients had multiple (73)
periventricular lesions, 47% had one or more infra-tentorial
lesion, 34.1% had multiple white matter lesions (79) including
cerebrum, cerebellum, brain stem and spinal cord. 38%
of patients had spinal cord lesion and 9% lesions in brain
were Juxta-cortical. Although contrast was given in only
50 patients, 10 scans show gadolinium enhancement (20%).
In 8 out of 15 patients, repeat MRI scan showed new lesions
other time, which was done between 3 months and 2 years
after initial scan. Conclusion : MRI scan features typical
in MS were seen in majority of patients studied. Spinal
cord involvement is more common in Indian subjects. Large
scale studies are required to determine sensitivity and
specificity of these MR lesions in Indian MS patients. |
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5. Arterial dissection, an oft missed cause of
post trauma “stroke”
Nootan Kumar Sharma, Sanjeev R Desai, Joy Varghese, Shashank
Joshi, KE Turel |
Arterial dissections were once thought to be extremely
rare but they are now being recognized with increasing frequency
as a cause of stroke in the young. Arterial dissections
occur when blood is forced between tissue planes of a vessel
wall leading to total occlusion of the parent vessel, or
creation of a false lumen that throws emboli into distal
circulation. The diagnosis of arterial dissection in the
setting of head and neck injury needs a high index of suspicion.
Trauma patients having focal neurologic deficits and a normal
initial CT Scan, or whose CT Scan findings are not directly
due to traumatic brain injury and cannot explain the neurologic
deficit are those in whom the diagnosis of arterial dissection
needs to be considered.
We have come across seven (6) cases of post traumatic cerebral
arterial dissection in the past three years, four had ICA
dissection while three had vertebral arterial dissection.
All these patients presented with TIAs or progressive strokes
within 24 to 48 hours of the injury. A tender vessel wall
haematoma was palpable in the neck of two of the patients
of ICA dissection. All these patients underwent MRI-MRA
or 4 vessel DSA of brain in order to confirm the diagnosis.
The classical angiographic signs of arterial dissection
include smooth narrowing of the arterial lumen, ending in
total occlusion and the ‘string of beads’ appearance
of the arterial lumen. A pseudoaneurysm and a ‘double
barrel’ arterial lumen too may be rarely seen. Treatment
: Use of heparin or thrombolytics is often contraindicated
at least initially in these patients due to the head injury.
Patients with repeated TIAs or progressive strokes were
treated with occlusion of the parent artery with thrombogenic
coils without causing further harm to the patient. Preoperative
confirmation of good cross flow is mandatory. One patient
of blunt injury to the neck with repeated hemispheric TIAs
was put on oral anticoagulants. He is being followed up
with six monthly check angiograms for recanalisation of
ICA. A ten year old boy with vertebral arterial dissection
needed a posterior fossa decompression and duraplasty for
cerebellar infarct and swelling, in addition to permanent
occlusion of vertebral artery to stall further thromboembolism,
and recovered fully.
In conclusion, diagnosing an arterial dissection in the
setting of trauma needs a high index of suspicion. The diagnosis
must be made early so that appropriate therapeutic intervention
can halt the evolution of the disease and accelerate recovery. |
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