Browsing by Author "Hattingh, P."

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    Filling pressures of the heart during anaesthesia
    (Health & Medical Publishing Group, 1985) Coetzee, A.; Stewart, R. I.; Hattingh, P.
    The validity of extrapolating central venous pressure (CVP) to left ventricular (LV) filling pressure as gauged from the pulmonary artery wedge pressure (PAWP) was investigated in 9 subjects undergoing lung resection. Correlations existed between CVP and PAWP before, during and after surgery, and between changes in CVP and PAWP during surgery. There was, however, a wide scattering of the data around the regression lines, and an inability of the CVP and changes therein to predict the actual and directional change in PAWP in specific individuals. Caution is therefore advised in assessing the LV filling pressure from the CVP in patients undergoing lung resection during any phase of the peri-operative period.
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    Preoperatiewe spesiale ondersoeke en intraoperatiewe arteriele suurstofspanning tydens eenlongnarkose
    (Health & Medical Publishing Group, 1990) Hattingh, P.; Coetzee, A.; McGregor, L.; Klopper, J. F.
    The value of preoperative lung function tests was examined in 11 patients as a method to predict changes in intraoperative PaO2 (dPaO2) during one-lung ventilation in pulmonary surgery. Ventilation (Kr-81m and Xe-133) and perfusion (Tc-99m microspheres) to the lung to be operated upon significantly predicted the intra-operative decrease in PaO2. The correlation between ventilation percentage to the diseased lung and dPaO2 was 0,87 (SEE = 9,99) and between perfusion and dPaO2 0,84 (SEE = 9,51).