[Control of the position of central venous catheters by intracardial ECG. A presentation of the method and its advantages compared to roentgen control].

It is obligatory to control the localization of a central venous catheter. We describe a simple own method for controlling the correct position of a central venous catheter electrocardiographically. The reported method is accurate and inexpensive.

[Anaphylactic shock during general anaesthesia due to fentanyl and alloferin in a patient with positive skin test (author's transl)].

A patient who suffered an anaphylactic shock during general anaesthesia showed positive reactions in a skin test with fentanyl (i.e. in Thalamonal) and Alloferin.

[Change of intracranial pressure in neurosurgical patients by hyperventilation, positive negative pressure ventilation and PEEP (author's transl)].

The effects of a hyperventilation, positive negative pressure ventilation (PNPV) and ventilation using positive endexpiratory pressure (PEEP), on intracranial pressure (ICP) was measured in 24 patients suffering from different neurosurgical disorders. The patients were given a basic anaesthesia including muscle relaxation. The investigations showed, that hyperventilation, followed by a PCO2 of 26 and 30 torr, clearly lowered the intracranial pressure.

[Comparative investigations on the influence of etomidate, thiopentone and methohexitone on the intracranial pressure of the patient (author's transl)].

Intracranial pressure was measured under the influence of the new hypnotic etomidate (Dosage: 0.15 to 0.30 mg/kg b.

[Effect of enflurane (ethrane) on intracranial pressure in comparison with halothane (author's transl)].

Enflurane (Ethrane) was given before operation to 13 neurosurgical patients. 11 of them received halothane for comparison of effects on intracranial pressure (ventricular catheter), blood pressure and central venous pressure during controlled ventilation. Neuroleptanalgesia was used as basic anaesthesia.