Der Anaesthesist
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Case Reports
[Cerebral monitoring with trancranial doppler-sonography and cerebrovenous oximetry during resuscitation].
This case report describes cerebral monitoring of intracranial haemodynamics using transcranial Doppler sonography (TCD) and jugular bulb oxygen saturation (SjO2) by fiberoptic jugular bulb oximetry during cardiac arrest following cardiac surgery involving cardiopulmonary bypass (CPB). CPB for aortic valve replacement and coronary artery bypass grafting was performed in a 63-year-old patient previously operated upon for heart disease. Mean blood flow velocity was measured in the middle cerebral artery using a bidirectional 2 MHz TCD system. ⋯ Following extrathoracic cardiac resuscitation, systolic "spikes", loss of the diastolic flow profile, and no increase in SjO2 were recorded by the monitors, indicating cerebral circulatory arrest. However, a normal flow profile with increasing diastolic portions and an increase in SjO2 to 52% were seen following optimisation of the open thorax cardiac resuscitation. This monitoring may be able to give information to optimise therapy during CPR to avoid ischaemic cerebral injury.
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A pre-term infant weighing 900 g, gestational age 25 weeks, developed an acute abdomen. Intravenous lines had been inserted previously in the left (silastic catheter) and right (24 G cannula) saphenous veins in the neonatal intensive care unit. During surgical exploration, a perforation of the terminal ileum was found. ⋯ Paediatricians and anaesthesiologists must consider the risk of thrombosis of the vena cava. If venous lines in the lower limbs are not visible to the anaesthesiologist during the operation, venipuncture of veins of an upper limb is recommended before starting the surgical procedure. Due to the high incidence of vena cava thrombosis caused by central venous lines and the difficulty of peripheral venipuncture in pre-termintanty, a safe venous line should be inserted if necessary by pre-operative venesection.