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SIMV Anesthesia

Ayda Türköz, Şule Turgut Balcı, Hülya Gönen, Özlem Çınar, Emre Özker, Rıza Türköz
AIMS AND OBJECTIVES: We used near-infrared spectroscopy to document changes in cerebral tissue oxygen saturation (SctO2) in response to ventilation mode alterations after bidirectional Glenn (BDG; superior cavopulmonary connection) procedure. We also determined whether spontaneous ventilation have a beneficial effect on hemodynamic status, lactate and SctO2 when compared with other ventilation modes. MATERIALS AND METHODS: 20 consecutive patients undergoing BDG were included...
January 2014: Annals of Cardiac Anaesthesia
Jun Li, Xin-jing Gao, Yan-ying Gao, Jun-tao Wei, Ying-zhi Qin
OBJECTIVE: To compare the influence of pulse indicator continuous cardiac output (PiCCO) in monitoring tidal volume (V(T)) under pressure control ventilation mode and volume-controlled ventilation mode in sheep. METHODS: After anesthesia and tracheotomy, 5 sheep, which were apneic and receiving mechanical ventilation. Twenty minutes later, central venous pressure (CVP) and cardiac function were monitored with different selected V(T) levels of 6, 10, 15, 20 ml/kg under bi-level positive airway pressure (BiPAP) mode by changing the pressure of inspiration, or under the synchronized intermittent mandatory ventilation (SIMV) mode with the same ventilation conditions...
March 2010: Zhongguo Wei Zhong Bing Ji Jiu Yi Xue, Chinese Critical Care Medicine, Zhongguo Weizhongbing Jijiuyixue
Lu-bo Gao, Zhen-guo Song, Jin-cheng Li
OBJECTIVE: To observe the effects of intermittent positive pressure ventilation (IPPV), synchronized intermittent mandatory ventilation (SIMV), and biphasic intermittent positive airway pressure (BiPAP) on the recovery time of automatic breathing in patients in different stages of recovery of general anesthesia with muscle relaxant. METHODS: Thirty patients were randomly divided into three groups. The initial ventilation pattern was IPPV for all patients. After the last dose of muscle relaxant, the pattern of ventilation of group II and group III was adjusted to SIMV and BiPAP, respectively...
July 2003: Zhongguo Wei Zhong Bing Ji Jiu Yi Xue, Chinese Critical Care Medicine, Zhongguo Weizhongbing Jijiuyixue
H Imanaka, M Nishimura, H Miyano, H Uemura, T Yagihara
BACKGROUND: Synchronized intermittent mandatory ventilation (SIMV) is commonly used in infants and adults. However, few investigations have examined how SIMV reduces respiratory workload in infants. The authors evaluated how infants' changing respiratory patterns when reducing SIMV rate increased respiratory load. The authors also investigated whether SIMV reduces infant respiratory workload in proportion to the rate of mandatory breaths and which rate of SIMV provides respiratory workloads similar to those after tracheal extubation...
October 2001: Anesthesiology
D M Linton
Adaptive lung ventilation (ALV) is a method of closed-loop mechanical ventilation analogous to modern closed-loop technology in aviation such as the autopilot and automatic landing system. The algorithm of the controller of ALV is designed to automatically provide pressure-controlled synchronized intermittent mandatory ventilation (P-SIMV) and weaning as individually required in any clinical situation. The synchronized pressure limited breaths constantly adapt to the patient requirements to encourage optimal alveolar ventilation with minimal adverse physiological disturbance and timely weaning...
September 2001: Respiratory Care Clinics of North America
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