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Query: UMLS:C0026827 (hypotonia)
 5,860 document(s) hit in 31,850,051 MEDLINE articles (0.00 seconds)

Hemiplegic migraine was observed in a boy aged 16 years. The family history was unquestionable and the duration of hemiplegia was prolonged. Carotid angiography after regression of clinical signs showed a particularly profuse passage of the contrast to the contralateral side and to the area of vascularization of the basilar artery. It is supposed that particularly favourable connections existed in this case in the arterial vascular bed of the brain, with possible hypotonia of the arterial walls in this area.
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PMID:[Case of hemiphlegic migraine with atypical angiographic findings]. 71 33

Dorsal column lesions in the high cervical region of the monkey result in severe defects of movements projected into space and contactual orienting reactions of the forelimbs. The hindlimbs are less affected provided a pathway through the lateral columns, Morin's tract, remains intact. Interruption of this pathway results in a defect of hindlimb function similar to that of the forelimbs. Cerebellar ablations in monkeys result in postural and movement disorders, including hypotonia of limb extensor muscles. An important mechanism underlying the hypotonia is a depression of the responses to muscle extension of spindle primary afferents owing to a decrease of fusimotor activity. In the decerebellate animal abnormalities of limb trajectory during active movements projected into space (cerebellar "dysmetria") appear to result principally from dysfunction of systems separate from the peripheral fusimotor efferent-spindle afferent reflex arc. Precentral cortical ablation results initially in a contralateral hypotonic hemiparesis, later in a hypertonic hemiparesis. A depression of the responses of muscle spindle afferents occurs during the hypotonic phase, but during the hypertonic phase spindle function returns to normal levels. Accordingly a depression of fusimotor function appears to be important in the hypotonic phase of hemiplegia; however, there is no evidence that an enhancement of fusimotor function underlies the hypertonic phase. Bilateral section of the medullary pyramids results in an enduring hypotonic paresis. Abnormalities of contactual orienting responses of limbs are similar to those following dorsal column lesions. Responses of spindle primary afferents are depressed during the initial stages after acute pyramidotomy, then approach but do not reach normal levels. It is concluded that the dorsal columns constitute an afferent, and the pyramidal tracts an efferent, pathway important in oriented contactual reactions of the limbs. The hypotonia resulting from cerebellar lesions, precentral ablation, and pyramidal tract section stems, at least in part, from a depression of the fusimotor innervation of muscle spindle afferent activity.
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PMID:Primate models of postural disorders. 105 89

In order to study the effect of long-term administration of co-trimoxazole on renal function, creatinine clearance rates were measured in 18 patients with neurogenic hypotonia of the bladder due to paraplegia, quadriplegia, hemiplegia and cerebrocervical injuries. The duration of the prophylactic treatment was between 60 and 80 days. The initial average creatinine clearance rate of this group was 99-0 ml/min and the final one was 110-7 ml/min (P = 0-15, n.s.). In addition, in seven cases the prophylaxis was extended to a period of 330 to 430 days. In this group the initial average creatinine clearance rate was 104-4 ml/min and the final one was 94-7 ml/min (P greater than 0-3, n.s.). It is concluded, therefore, that prolonged administration of co-trimoxazole to patients with creatinine clearance above 50 ml/min does not cause any marked deterioration in the renal function.
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PMID:Effect of long-term co-trimoxazole therapy on renal function. 119 10

Alternating hemiplegia in childhood (Verret, 1971) is a disorder presenting with frequent episodes of alternating hemiplegia from early infancy. We report a patient with this disorder, along with a pathophysiological study and a discussion about the available therapies for this disorder. The patient, an 11-year-old boy, visited our hospital with episodes of alternating hemiplegia from early infancy. His family history showed that many members suffered from migraine. He was born with asphyxia. Mental and motor developmental delays were seen from early infancy. The hemiplegic episodes with ipsilateral facial palsy had occurred frequently from early infancy. The episodes were frequently induced by emotional stress. The duration of hemiplegia varied from 10 minutes to 3 days. From the age of 11 years, he had begun to have migrainous attacks with or without hemiplegic episodes. Neurological examination revealed slight muscle hypotonia, choreoathetosis and dystonic movements induced by locomotion, positive Myerson sign, increased deep tendon reflexes and Babinski reflex. CAG, VAG and CAT revealed normal findings. EEG revealed diffuse generalized slowing during hemiplegic episodes. Measurement of regional cerebral blood flow (CBF) by 133Xe inhalation method revealed a slight decrease of bilateral CBF during a quadriplegic episode. Positron emission tomography using C15O2 revealed a slight decrease of CBF at the insula, putamen and claustrum of the left side during a right sided episode. Increased excretion of urinary 5-HIAA was seen during one episode. From our clinical and laboratory findings, we think this disorder may be a special type of migraine. Therapeutic trials of diazepam and flunarizine were both effective, but the initial effectiveness was decreased after 5 months.
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PMID:[A patient with alternating hemiplegia in childhood]. 273 28

Two full-term neonates, one with convulsions and intermittent generalized hypotonia and one with poor sucking, temperature instability, and lethargy, are reported. CT scan findings suggested cerebral arterial infarction. Arteriography revealed occlusion of the middle cerebral artery, unilaterally in the first and bilaterally in the second patient. The evolution of the infarct could be followed on serial CT scans. No predisposing factors during pregnancy or delivery were found, and serious neurologic deficits developed in both children. These cases demonstrate that, even in full-term neonates with discrete or moderate neurologic symptoms and born after normal pregnancy and delivery, the possibility of vasoocclusive brain infarction should be considered. The diagnosis is suggested by imaging techniques, of which CT scanning seems to have the greatest value at present. This technique also permits the follow-up of the lesions. The prognosis for neurologic development appears to be variable: minor neurologic deficits as well as unexplained spastic hemiplegia in older children may be the consequence of inapparent cerebral arterial infarction in the neonatal period.
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PMID:Idiopathic cerebral arterial infarction with paucity of symptoms in the full-term neonate. 362 89

Eighty infants with cerebral palsy including monoplegia, diplegia, quadriplegia, hemiplegia, choreoathetosis, hypotonia with mental retardation and cerebellar ataxia, underwent Computed Cranial Tomography (CCT). Specific morphological anomalies such as ventricular dilatation with or without diverticulum, cortical atrophy, low density areas and calcifications, occur with varying frequency in each clinical groups. There exists a good correlation between the pathogenesis of the lesions, clinical data and CCT pictures.
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PMID:Cranial computerized tomography in cerebral palsy. An attempt at anatomo-clinical and radiological correlations. 720 4

Massive fetomaternal haemorrhage (FMH) occurs in 0.12 to 0.5% of pregnancies. It is most often spontaneous and involves uncomplicated near-term pregnancies. It causes fetal anaemia, with or without fetal distress and hydrops fetalis. To our knowledge only one paper has reported a neurological complication (hemiplegia). We describe one case of FMH (maximal Kleihauer test = 6.5%) at 28 weeks gestation, which was spontaneous, reversible, associated with sinusoidal fetal heart rare (FHR) and hydrops fetalis; and complicated by an intraventricular antenatal haemorrhage at 30 weeks gestation. Echographic abnormalities decreased. The infant was born at 40 weeks gestation. Clinical examination was normal during the first week of life. At the age of 4 1/2 months, examination showed axial hypotonia and moderated dilatation of intracerebral lateral ventricules without any other brain damage. At the age of 24 months, the child had retarded walking and hypotonia. The outcome was spontaneously favourable with disappearance in utero of the intraventricular haemorrhage (HIV), without hydrocephalia or ischaemic lesions. Three cases of similar FMH have been reported but none of them described cerebral complications. Intrauterine intravascular transfusion should be proposed early. No single pathophysiological mechanism of FMH has been universally accepted and there is no aetiological treatment. The risk of recurrence of FMH in later pregnancies requires careful follow-up.
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PMID:[Fetal cerebral accident due to massive fetomaternal hemorrhage. A case report]. 749 46

Lingual motricity was prospectively studied in 32 consecutive stroke patients with hemiparesis or hemiplegia involving the face. We excluded patients with vertebrobasilar infarcts, controlateral stroke, arteriovenous malformations, internal carotid artery dissection, severe aphasia or severe bucco-lingual apraxia. The study population consisted of 18 males and 14 females with a mean age of 64.2 years. Seventeen patients had a lesion located in the right hemisphere and 15 in the left one. The lesion was of ischemic origin in 19 patients and hemorrhagic in 13. Lingual motricity was studied at rest and at protraction. We recorded whether the following abnormalities were present: lingual deviation, limitation of protraction or lateral movements, atrophy, hypotonia and fasciculations. Sixteen patients had a deviation of the tongue at protraction. The other abnormalities were deviation of the tongue at rest, limitation of lateral movements at protraction, unilateral lingual hypotonia and limited protrusion. Of 16 patients with deviation of the tongue at protraction, 10 had no deviation at rest. Of the 6 remainders, 2 had deviation of the tongue towards the opposite side, at rest, and 4 towards the same side. Most patients with deviation of the tongue at protraction, had a lesion of the posterior limb of the internal capsule and of the posterior part of the lenticular nucleus. Most patients without lingual deviation, had a lesion of the capsule-lenticular region and of the superior portion of the internal capsule, just under the corona radiata.(ABSTRACT TRUNCATED AT 250 WORDS)
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PMID:[Lingual motility in unilateral hemispheric vascular complications. Study of the cortico-hypoglossal afferences]. 767 21

In infancy, two brothers developed recurrent attacks of alternating or bilateral hemiplegia arising exclusively out of sleep. The episodes were terminated by even brief sleep. Neither child had hypotonia, dystonic attacks, paroxysmal eye movement abnormalities, or other features characteristic of the now-classic form of alternating hemiplegia of childhood (AHC). The development of the brothers has so far remained normal. Both parents have a history of migraine. In the older boy, magnetic resonance spectroscopy (MRS) of muscle showed increased inorganic phosphate similar to what is found in children with AHC. In the younger brother and parents, MRS of muscle was normal. Other investigations were unrevealing. Flunarizine greatly reduced the duration of attacks. This genetically determined disorder represents a specific entity that is probably migraine-related and is easily misdiagnosed as AHC. Because of its benign course, particularly as far as mental development is concerned, it must be distinguished from classic AHC, which has a terrible prognosis.
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PMID:Benign familial nocturnal alternating hemiplegia of childhood. 793 27

We report 2 children with early onset of hypotonia and frequent episodes of paroxysmal dystonia. The episodes were abolished even by brief naps. One of the children developed alternating hemiplegia in the second decade. These children seem to have a variant of the now well-recognized syndrome of alternating hemiplegia of childhood. In that disorder, episodes of alternating hemiplegia develop before the age of 18 months. This syndrome must be considered in the differential diagnosis of paroxysmal dystonia in childhood.
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PMID:Infantile hypotonia and paroxysmal dystonia: a variant of alternating hemiplegia of childhood? 819 89


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