6 Ergebnisse.

1.1Impurity introduction There is no precise definition for "impurity, " because of the apparent negativity attached to this word in the pharmaceutical sciences. Webster's dictionary defines impurity as something that is impure or makes something else impure A better definition of an impure substance may be as follows: a substance of interest mixed or impregnated with an extraneous or usually inferior substance. A simple definition for an impu...

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Trigeminal neuralgia is a clinical syndrome characterised by episodes of unilateral sharp, lancinating pain triggered by non-noxious stimuli and occurring along the distribution of one or more divisions of fifth cranial nerve. It usually lasts for a few moments and typically has periods of remissions and exacerbations. Although well known to physicians centuries ago, it could be localised to disease of the trigeminal nerve only in the eighteen...

Vestibular schwannomas are benign neoplasms arising from vestibular portion of eighth cranial nerve and comprising around 5% of all primary intracranial tumours. Hearing loss and tinnitus are the most common presenting features. MRI is the imaging modality of choice. Surgery is the treatment of choice in medically fit patients, however, a few cases may be managed by conservative means or by radiosurgery. Surgical approaches need to be individu...

Brachial plexus injuries (BPI) are the most severe nerve injuries of the upper extremity which results in marked functional impairment. Trauma due to road traffic accidents is the most common aetiology. and middle aged males are most commonly affected. Diagnosis is mainly by clinical examination while electrophysiological studies only confirm the diagnosis and provide information regarding the number of roots involved and the type of injury. I...

Traumatic brain injury is one of the most common causes of morbidity and mortality worldwide. The incidence is around 1.7 per million persons according to western statistics, although, it may be much higher in developing countries. Motor vehicular accidents are noted to be the most common aetiology and males in their middle age are mostly affected. Presentation can be varied depending on the nature and severity of injury. Computed tomography i...