Changes of haemodynamics, pulmonary mechanics and blood gas in different ventilatory modes during one-lung ventilation
- VernacularTitle:小儿单肺定容和定压通气对血流动力学呼吸力学及血气的影响
- Author:
Zhiyong HU
;
Lizhong DU
;
Jinjin HUANG
- Publication Type:Journal Article
- Keywords:
Ventilation, mechanical Hemodynamics Respiratory mechanics Blood gas analysis
- From:
Chinese Journal of Thoracic and Cardiovascular Surgery
2003;0(01):-
- CountryChina
- Language:Chinese
-
Abstract:
Objective: To investigate the changes of haemodynamics, pulmonary mechanics and blood gas in volume controlled and pressure controlled ventilatory patterns during one-lung ventilation (OLV). Methods: 20 patients with patent ductus arteriosus (PDA) underwent left thoracotomy PDA ligation with right OLV. The patients were divided into three groups: two-lung ventilation with volume controlled (TLV-VCV), one-lung ventilation with volume controlled (OLV-VCV), and one-lung ventilation with pressure controlled (OLV-PCV). After two-lung ventilation with VCV, one-lung ventilation was started by VCV and the ventilation mode was then switched to PCV. All measurements were made 25 min after initiation of the ventilation mode. The respiratory mechanics index was measured by side stream spirometry (SSS), including peak airway pressure (Ppeak), plateau pressure (Pplat), airway resistance (Raw), lung compliance (Cdyn) and inspiratory and expiratory minute ventilation (Mvi, Mve). Cardiac output (CO), stroke volume (SV), systemic vascular resistance (SVR), left ventricular ejectiontime (LVETi), and aortic blood flow acceleration (ACC) were also measured, by using the transesophageal Doppler (TED) monitor. Arterial blood gases was determined in every ventilation mode. Results: Ppeak、Pplat and Raw were significantly higher during OLV-VCV than that during TLV-VCV (P
