PubMed Health⌕ Search

Biomedical subjects

G K Ahuja

Publications and source records attributed to G K Ahuja.

At least 19 recordsLinked to original sources
PubMed1992

Haemorheological factors in the pathophysiology of acute stroke.

Blood viscosity studies were carried out in fourteen patients with acute stroke, eight with cerebral infarction, six with cerebral haemorrhage and in thirteen controls. We observed a statistically significant higher values of plasma, red cell and whole viscosity in patients with acute stroke than in normal controls. Plasma fibrinogen levels were statistically higher (p less than 0.01) in patients than in normal controls. The platelet aggregation was increased in two young adults with acute stroke. The results suggest that the haemorheological factors play an important role in the pathophysiology of stroke patients.

Acute Disease↗
PubMed1992

Combination therapy of parkinsonism with deprenyl.

In view of the encouraging results in various trials with deprenyl as an added drug therapy for Parkinson's disease, a pilot study to study deprenyl's efficacy in the Indian population was undertaken. Eleven patients were recruited in this open trial and were objectively assessed by Unified Rating Scale for Parkinsonism of Columbia University, Modified Hoehn and Yahr Staging and Schwab and England activities of daily living. Side effects, mood changes, changes in dyskinesia percentage, early morning dystonia and off period percentage were also noted. This study suggests improvement in the above parameters with minimal side effects.

Adult↗
PubMed1992

Effect of vesical feedback on rate of urine formation demonstrated by infusing hypotonic and hypertonic saline into the urinary bladder of dogs.

The present study was undertaken to investigate the effect of the presence of solutions of different osmolality (hypertonic 3%, 4% and 5% hypotonic 0.1%, 0.2% and 0.3% in the urinary bladder on renal urine formation. The study was conducted on 36 dogs of either sex. 100 ml normal saline was used for distending the bladder. Various hypertonic and hypotonic solutions were infused inside the bladder and rate of urine formation was recorded. Presence of hypertonic fluid increased the rate of urine formation and hypotonic fluid decreased it.

Animals↗
PubMed1991

Rapid diagnosis of tuberculous meningitis by polymerase chain reaction.

The polymerase chain reaction (PCR) in cerebrospinal fluid was compared with conventional bacteriology and an enzyme-linked immunosorbent assay (ELISA) for cerebrospinal fluid antibodies in the diagnosis of tuberculous meningitis (TBM). PCR was the most sensitive technique; it detected 15 (75%) of 20 cases of highly probable TBM (based on clinical features), 4 (57%) of 7 probable cases, and 3 (43%) of 7 possible cases. ELISA detected 11 (55%) of the highly probable cases and 2 each of the probable and possible cases. Culture was positive in only 4 of the highly probable cases. Among the controls (14 pyogenic meningitis, 3 aseptic meningitis, 34 other neurological disorders), 6 subjects tested early in the study (2 pyogenic meningitis, 4 other disorders) were PCR positive. Second DNA preparations from their stored cerebrospinal fluid samples were all PCR negative, suggesting that the false-positive results were due to cross-contamination. 18 PCR-positive TBM samples retested were all still PCR positive. The antibody ELISA was positive in 3 controls despite the use of a high cutoff value.

Bacteriological Techniques↗
PubMed1991

Flunarizine in migraine prophylaxis: an Indian trial.

Flunarizine, a calcium channel blocker is considered useful in migraine prophylaxis. We report the first Indian trial with this drug. Fifteen patients with migraine were studied in a 6 months double-blind, placebo-controlled crossover trial. Flunarizine was superior to placebo in reducing the severity and duration of the individual attacks though there was no statistically significant effect on frequency of migraine attacks. The side effects most frequently caused by flunarizine were weight gain and daytime sleepiness.

Adult↗
PubMed1991

POEMS syndrome.

A patient with peripheral polyneuropathy, hepatosplenomegaly, osteosclerotic myeloma in the ilium, hyperpigmentation and hypertrichosis is described. A diagnosis of POEMS syndrome was made. This is the first report of this syndrome from India.

Adult↗
PubMed1989

Pregnancy and epilepsy.

In a prospective study, 30 pregnant epileptic patients were followed through their pregnancy to determine the effect of seizures on pregnancy and its outcome and the effect of pregnancy on seizures. An attempt was made to correlate the serum hormone and anticonvulsant drug levels with seizure frequency, complications of pregnancy, occurrence of status epilepticus and teratogenicity. In 14 patients seizure frequency increased, in 15 it remained unchanged and in 1 patient it decreased. There were 2 spontaneous abortions, 2 patients had status epilepticus and 1 offspring of a patient had a ventricular septal defect. This patient was receiving carbamazepine and diphenylhydantoin. Patients with increased seizures frequency had significantly higher oestrogen levels, lower level of progesterone and lower level of anticonvulsant drugs as compared with those with no change in seizures. Patients who had abortions and those who developed status epilepticus had high serum oestrogen levels.

Abnormalities, Drug-Induced↗
PubMed1989

The heart in polymyositis-dermatomyositis.

Fourteen patients with polymyositis-dermatomyositis (PM-DM) underwent prospective cardiac assessment with non-invasive techniques. One patient had electrocardiographic evidence of Long-Ganong-Levine syndrome with multiple supraventricular premature beats. Echocardiographically one patient had late systolic prolapse of the posterior mitral leaflet and another had paradoxical movements of the interventricular septum. The study suggests that cardiac involvement is infrequent in PM-DM.

Adult↗
PubMed1989

Prior neurologic illness and the syndrome of irreversible lithium-effectuated neurotoxicity (SILENT).

Prior neurologic illness or CNS insult of any kind is known to increase the vulnerability to neurotoxicity of lithium. In this event the occurrence of neurotoxicity does not correlate with serum lithium levels. The authors describe a patient with hemiparesis who developed the syndrome of irreversible lithium-effectuated neurotoxicity (SILENT) while being treated with lithium for a manic episode. The authors review the literature on this aspect and highlight the dangers of starting lithium treatment in patients with neurologic impairment.

Adult↗