Abstract
With the transformation of modern medical models, the medical needs of patients have changed from treatment to safe, comfortable, and painless treatment. Therefore, it is clinically important to find an ideal analgesia model to reduce the pain after total knee arthroplasty and minimize the impact of surgical trauma on the body pressure. This article aims to study the effects of lower limb nerve block combined with local infiltration analgesia of the joint cavity on the hemodynamics and postoperative analgesia effects of knee joint replacement in elderly patients by comparing the effects of the subanaesthetic dose of ketamine on the hemodynamics and postoperative analgesia effect of knee joint replacement in elderly patients' intraoperative analgesia program. This article proposes that 90 patients requiring unilateral total knee replacement were randomly divided into 3 groups, with 30 patients in each group, age 65–85 years, average age 75 years, ASA I ∼ II grade, and body mass index 13.89 ∼ 37.26. Use a multifunctional monitor to monitor the patient's continuous blood pressure (SBP/DBP) and mean arterial pressure (MAP), heart rate (HR), electrocardiogram (ECG), intraoperative pulse oxygen saturation (SpO2), and end-tidal carbon dioxide (PETCO2). The following are monitored: record the heart rate (HR), systolic blood pressure (SBP), and diastolic blood pressure before induction of anesthesia (T0), before the upper tourniquet (T1), and after the upper tourniquet (T2), before tourniquet withdrawal (T3), and after tourniquet withdrawal (T4), mean arterial pressure (MAP). The three groups of patients had different degrees of itching, vomiting, nausea, and other adverse reactions. The experimental results in this article show that, in elderly patients with epidural anesthesia, the use of propofol and dexmedetomidine to maintain the patient's BIS value between 60 and 70 can meet the depth of sedation required for surgery without important surgical operation knowledge.
Highlights
On the premise of ensuring the safety of patients’ lives, we will further protect the cognitive function of patients, reduce the brain damage caused by anesthesia and surgery, improve the comfort of patients during the perioperative period, and accelerate the recovery of patients after surgery
We compared the average levels of mean arterial pressure (MAP), heart rate (HR), and SPO2 at four different time points of the two groups of patients at T0, T1, T2, and T3
We found that there was no significant difference in MAP and HR between the two groups of patients at T0. e MAP after external anesthesia and sedative pump injection was significantly lower than that at T0 (P < 0.01)
Summary
With the ever-changing medical standards and the continuous improvement of people’s living standards, people’s requirements for the quality of life and perioperative comfort have been further improved. e concept of rapid recovery surgery that minimizes perioperative pain and trauma is becoming the future development direction of medical treatment and has put forward greater requirements and challenges for anesthesiologists. Due to the large trauma, the patient’s early postoperative pain symptoms are the most obvious, and even severe and unbearable pain will affect the patient’s body and mind It causes a series of negative effects and hinders the early functional exercise of the joints of patients, reducing the efficacy of surgery. (2) e wireless communication energy consumption model is proposed, and the Raft consensus algorithm design based on clustering and the distance measurement in cluster analysis, the medical IoT, and data fusion technology are used to observe and analyze the neuroprotective total knee of patients with Kashin–Beck disease and provide technical support for the postoperative analgesic effect of the subanesthetic dose of ketamine in joint replacement surgery
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