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Biomedical subjects

J Szewczykowski

Publications and source records attributed to J Szewczykowski.

24 records · Page 2Linked to original sources
PubMedDate not supplied

[Computerized infusion test. I. The method].

Biophysical aspects and the method of the Computerized Infusion Test (CIT) developed in the Neurosurgical Clinic of the Medical Research Center, Polish Academy of Sciences, are presented. The CIT is a development of classical methods of estimating the cerebrospinal fluid outflow resistance. It is based on a clinically tested mathematical model of the intracranial pressure-volume compensating mechanisms. The CIT enables the etrapolation of the infusion curve in cases when it is impossible to reach the upper steady during the constant infusion test because of the ICP exceeding values estimated as being critical.

Computers↗
PubMedDate not supplied

[Computerized infusion test. II. Clinical use].

In 39 patients with intracranial lesions the resorption resistance was measured using an own computerized infusion test. A high usefulness of this test was demonstrated in the diagnosis of hydrocephalus and for establishing indications to ventriculocardiac valve implantation. In patients after craniocerebral injuries a rise was observed of the resorption resistance immediately after trauma in cases with subarachnoid haemorrhage. Later on, this resistance decreased gradually reaching a stable value after 1-2 years. Data obtained in the infusion test make possible establishing of optimal intracranial pressure and choice of an appropriate valve. The determination can be performed intraoperatively.

Brain Injuries↗
PubMedDate not supplied

[Intracranial pressure instability index as a new method of evaluating the capacity of intracranial volume compensation].

An index of intracranial pressure instability is calculated as a new way to evaluate the capacity of intracranial voluminal compensation in patients suffering from cranio-cerebral trauma. The value of the index is determined by mutual relations of intracranial pressure standard deviations measured during 3-minute periods before and after intracranial administration of 2 ml of 0.9% NaCl. Normal physiological range of the index was evaluated in controls without intracranial pathology.

Adolescent↗