Premium
Respiration, Circulation and Anaesthetic Management in Obesity. Investigation before and after Jejunoileal Bypass
Author(s) -
Söderberg Margareta,
Thomson Dick,
White Thomas
Publication year - 1977
Publication title -
acta anaesthesiologica scandinavica
Language(s) - English
Resource type - Journals
SCImago Journal Rank - 0.738
H-Index - 107
eISSN - 1399-6576
pISSN - 0001-5172
DOI - 10.1111/j.1399-6576.1977.tb01194.x
Subject(s) - medicine , jejunoileal bypass , anesthesia , respiration , cardiac output , blood volume , lung volumes , respiratory system , weight loss , respiratory minute volume , vascular resistance , obesity , cardiology , hemodynamics , surgery , lung , morbid obesity , anatomy
Some ventilatory and circulatory parameters were studied in 17 very obese patients before and after weight reduction following jejunoileal bypass. A low vital capacity and signs of impaired lung function with intrapulmonary shunting, increased alveolar‐arterial Po 2 difference and low Pa o2 were found. Although the spirometric values improved significantly after weight reduction, the ventilatory disturbance persisted. A normal response to inhalation of CO 2 was seen. The total blood volume was high and did not change after weight reduction. However, if calculated as blood volume per kg body weight, the values were lower than normal, and they increased as a consequence of weight reduction. Cardiac output was slightly lower than normal in relation to oxygen consumption. Total peripheral resistance was normal. Arterial blood pressure, which was in the high normal range preoperatively, decreased significantly after weight reduction. Total doses of intravenous anaesthetic agents and muscle relaxants were the same as for patients of normal weight. The importance of preoperative evaluation and of respiratory care of obese patients undergoing elective surgery is stressed.