Anaesthesia, resuscitation, and intensive therapy
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Anaesth Resusc Intensive Ther · Jan 1975
Comparative StudyComparison of controlled respiration by the manual technique and with a respirator during general anaesthesia for abdominal operations.
These studies investigating the difference between controlled respiration performed by manual technique and controlled respiration applied by means of a respirator during general anaesthesia, and assessing the influence of these methods on the immediate post-operative condition of the patient were carried out on 75 patients during abdominal operations. Gasometric tests in arterial blood were performed before premedication, at intervals of 30 min from the beginning of operation, and 10 min. after the removal of the endotracheal tube. Controlled respiration with a respirator is a more favourable method of pulmonary ventilation during general anaesthesia given for a long-lasting surgical operation. ⋯ The best results were obtained using a respirator with inspiratory volume of 10 ml/kg and respiratory frequency 10/min., which ensured normocapnia. It was observed that oxygenation of arterial blood was reduced postoperatively in all patients but the value of PaO2 was the lowest in patients on manual controlled respiration. Disturbances in acid-base balance and oxygenation had an unfavourable effect and delayed the regaining of consciousness.
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Anaesth Resusc Intensive Ther · Jan 1975
Assessment of arterial blood oxygenation in various states of acute respiratory failure.
The study contains an analysis of the clinical course of 48 patients with acute respiratory failure. The degree of arterial hypoxaemia and respiratory failure were correlated with the value of true pulmonary shunt of non-oxygenated blood. ⋯ The value of 47% of shunt was accepted as that with is incompatible with survival. It was demonstrated that determinations of pulmonary shunt are superior to A-aP02 measurements in assessment of the ventilatory function of the lungs.