{'fraction_non_alphanumeric': 0.0375, 'fraction_numerical': 0.023214285714285715, 'mean_word_length': 5.15934065934066, 'pattern_counts': {'":': 0, '<': 0, '<?xml version=': 0, '>': 0, 'https://': 0, 'lorem ipsum': 0, 'www.': 0, 'xml': 0}, 'pii_count': 0, 'substrings_counts': 0, 'word_list_counts': {'cursed_substrings.json': 0, 'profanity_word_list.json': 0, 'sexual_word_list.json': 0, 'zh_pornsignals.json': 0}}
[Haemodynamic effects after rapid infusion of dextrane in geriatric patients (author's transl)].

In 85 geriatric premedicated patients haemodynamic effects were investigated following rapid infusion of 500 ml dextrane. The data measured one day preoperative revealed typical age-related changes of the cardiovascular system: decrease of cardiac output, stroke volume and heart rate; increase of peripheral vascular resistance and mean arterial pressure. After infusion of dextran central venous pressure rose by 4.9 mm Hg (mean), mean arterial pressure by 7.5 mm Hg (8.5%) and cardiac output by 1.04 1/min (24.3%). Heart rate alterations were insignificant, but total peripheral resistance decreased significantly by 12.5%. Pulmonary capillary pressure rose to 15.4 +/- 3.4 mm Hg. We conclude that it is possible to increase cardiopulmonary efficiency by extracardiac measures preoperatively even in aged patients. In no case critical left- or right ventricular filling pressure exceeded, so we cannot accept the often expressed warnings against induced hypervolaemia in patients with no cardiac failure except old age.