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| Circulatory and EEG changes during resuscitation in experiments. G Temes, J Lantos, B Török Acta Physiol Hung 1984; 64(2):107-115 ICID: 168203 |
| IC™ Value: 5.00 |
| In anaesthetized dogs blood pressure (BP), carotid artery flow (CAF), oxygentension of arterial blood (paO2) and brain surface (bs-pO2), ECG, frequency analyzed EEG were measuredand/or recorded. The changes in these parameters were detected before and during ventricular fibrillationwith external and direct heart massage as well as after defibrillation. Comparisons were made betweenthe effect of oxygen and room air ventilation. The ratio of successful resuscitation was 88% with directheart massage and O2 respiration, 76% with external thoracic massage and O2 ventilation, and 68% withexternal massage combined with room air respiration. The highest BP and CAF could be achieved with directheart massage. The results suggest that the minimal requirement for success is to achieve a BP of 5 kPa(40 mmHg) and 13 ml/min CAF. In dogs with large and stiff thorax this minimal pressure and flow couldnot be attained. During effective massage with room air ventilation brain surface pO2 increases moderately,but with O2-respiration it returns to normal. Small or no changes in bs-pO2 indicates unfavourable prognosis.The start bs-pO2 elevation coincides with the reappearance of the first EEG waves, while pO2 increaseon the brain surface precedes the normalization of EEG. |
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ICID 168203 PMID 6496125 - click here to show this article in PubMed database |
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