Application of anesthesia machine monitoring technology in laparoscopic surgery
Application of anesthesia machine monitoring technology in laparoscopic surgery
When surgeons choose surgical methods to treat diseases, they always strive to reduce the impact of trauma on the human body and reduce the occurrence of postoperative complications. In the 1970s, as a minimally invasive surgical technique, laparoscopy began to enter clinical use; because of its minimal impact on human body functions, it has been widely used in vascular, urinary, gastrointestinal, and obstetric operations; according to The characteristics of its operation require the provision of anesthesia equipment with corresponding monitoring technology to ensure intraoperative safety. As a high-end anesthesia workstation platform, the Aeon7700A anesthesia machine (hereinafter referred to as 77A) produced by Aeon Medical provides inhalation anesthesia technology, which is suitable for various types of surgery; combined with the use of various monitoring technologies, it can provide high-end features for laparoscopic surgery. Performance of anesthesia, thus ensuring the safety of patient anesthesia.
1. Laparoscopic surgery Laparoscopic surgery must use the "pneumoperitoneum" technique to create a space between the abdominal wall and the organs to help the endoscope perform surgical operations in the abdominal cavity. The pneumoperitoneum technique usually uses CO2 gas, and the patient is required to maintain a special position during the operation.
2. The choice of anesthesia for laparoscopic surgery takes into account the long time of laparoscopic surgery, the patient is prone to mental anxiety, and the use of muscle relaxants during the operation. Generally, general anesthesia with tracheal intubation and controlled ventilation is used, and local anesthesia can be selected under special circumstances. And epidural anesthesia. 77A is an anesthesia machine that continuously supplies fresh airflow. It supports general anesthesia and can provide various ventilation modes, including volume control, pressure control ventilation, etc., and the provision of synchronized intermittent command ventilation and pressure support mode is even more for surgery General anesthesia with spontaneous breathing. At the same time, 77A has a back-up oxygen flow meter, which can directly supply oxygen to the patient through the nasal cannula.
3. The most commonly used technique for monitoring pneumoperitoneum during laparoscopic anesthesia is CO2 gas. A large amount of CO2 will increase intra-abdominal pressure and elevate the diaphragm, causing changes in the patient’s lung compliance and airway resistance, as well as changes in ventilation and respiratory function. Cause various complications. In order to ensure the safety of patients during the operation, the changes of various parameters need to be monitored during anesthesia. 77A provides multiple monitoring technologies, such as pulmonary breathing loop monitoring, end-tidal carbon dioxide, inspired oxygen concentration, minute ventilation, airway pressure, etc., to facilitate the anesthesiologist to judge the patient's anesthesia status. During laparoscopic surgery, the pneumoperitoneum changes the patient’s thoracic compliance and airway resistance. The anesthesiologist can observe the real-time changes in lung compliance through the PV ring (Figure 1) and the airway through the FV ring (Figure 2). The resistance changes, so as to grasp the changes of the patient's respiratory mechanics in real time. At the same time, in order to facilitate the operation of doctors, 77A provides a one-key access to the breathing ring function setting. You can directly enter the breathing ring display on any operation interface, which is quick and convenient for the clinic. Due to the use of CO2 gas, PaCO2 gradually increases during laparoscopic surgery until a peak appears and remains stable. During anesthesia, it is necessary to appropriately increase the minute ventilation to prevent CO2 storage and hypercapnia; but the value of PaCO2 Monitoring is inconvenient, and PETCO2 is generally used clinically to reflect the level of PaCO2. The 77A end-tidal carbon dioxide monitoring module can help clinical anesthesiologists grasp PETCO2 in real time, and can set alarm values, which is very convenient for intraoperative monitoring to adjust ventilation in time.
At present, many hospitals have carried out laparoscopic surgery. Due to its small trauma and postoperative recovery, the scope of surgery is gradually expanding. This requires anesthesia equipment to adapt to the special requirements of the operation to ensure the smooth progress of the operation. The Aeon7700A of Aion Medical is such a device, with powerful anesthesia ventilator performance and comprehensive monitoring functions; at the same time, in order to meet the requirements of the endoscopic operating room, it provides two levels of strong and weak overhead lights to ensure the writing of intraoperative anesthesia records. , The flowmeter has LED background lighting. In short, as a comprehensive anesthesia workstation platform, Aeon7700A's comprehensive monitoring functions and scalability make it very suitable for laparoscopic surgery.