ABSTRACT
OBJECTIVE@#To evaluate the effect of wrist-ankle acupuncture (WAA) in pain and functional recovery after total knee arthroplasty (TKA).@*METHODS@#From June to September 2020, 94 participants were included from the Second Hospital of Tangshan and randomly assigned to the WAA group (47 cases) and the sham WAA group (47 cases) by a random number table, receiving real or sham WAA treatment, respectively. The primary outcome measure involved the visual analogue scale (VAS) scores at rest and in motion. The secondary outcomes involved the range of motion (ROM) of the knee joints, straight-leg raising time, postoperative weight-bearing time, sufentanil consumption within 48 h of patient-controlled analgesia (PCA) pump, length of hospital stay, and postoperative complications.@*RESULTS@#The VAS scores on the 3rd, 5th, and 7th postoperative days at rest and in motion was significantly lower in the WAA group than that of the sham WAA group (P<0.01). The ROM on the 1st, 2nd, and 3rd PODs was significantly higher in the WAA group than that of the sham WAA group (P<0.01). In comparison to the sham WAA group, the sufentanil consumption within 48 h of PCA pump was significantly less in the WAA group (156.3 ± 12.2 µg vs. 128.8 ± 9.8 µg, P<0.01). There was no significant difference in active straight-leg raising time, postoperative weight-bearing time, length of hospital stay, and postoperative complications between the two groups (P>0.05).@*CONCLUSIONS@#WAA could alleviate post-TKA pain, improve knee joint function, and reduce the sufentanil consumption within 48 h of PCA pump. WAA is a safe and effective treatment in the perioperative analgesic management for TKA.
Subject(s)
Humans , Arthroplasty, Replacement, Knee/adverse effects , Ankle , Wrist , Sufentanil , Pain, Postoperative/therapy , Acupuncture Therapy/adverse effects , Analgesia , Knee JointABSTRACT
Objective To propose the design of a pulsate blood pump driven by magnetic coupling and verify its feasibility. Methods The blood pump was designed based on the magnetic transmission reciprocating force model and the push-and-pull structure, and the coupling force was calculated by building the magnetic force-driven model. The prototype of the blood pump was then manufactured, on which the extracorporeal circulation simulation test was conducted to obtain the pressure and flow rate. Results Physiological saline was used as the circulation medium. When the afterload was fixed and increase the preload, the output of the blood pump would decrease, but showing no obvious linear trend. While the preload was fixed and increase the afterload, the output of the blood pump was reduced, showing a linear trend. With the driving frequency set as 75 per minute, and the preload and afterload adjusted in the range of 0.665-3.990 kPa (5-30 mmHg) and 5.320-11.970 kPa (40-90 mmHg), respectively, the output of the blood pump could reach 2.0-3.1 L/min while guaranteeing the linear relationship. Conclusions The proposed magnetic coupling-driven pulsate blood pump can basically meet the need of extracorporeal membrane pulmonary circulation, while it still needs further improvement. The research results have a valuable application prospect, especially with great significance in replacement of blood pump currently used in the extra-corporeal membrane oxygenation (ECMO) equipment in clinic.
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Objective To propose a design method of isothermal chamber for tidal volume testing equipment. Methods According to the State Equation of Ideal Gas, the gas volume was accurately calculated and injected into an airtight chamber, and then the pressure and temperature changes in the chamber were measured. To keep constant temperature, the fine copper wire was padded into the chamber to absorb the heat produced by the gas compressed during the injection. Results For the chamber of 1L, 300 g/L copper should be filled at least and with not more than 100 mL gas to keep the temperature inside the chamber isothermal. The experiment system was then connected with ventilator to compare the measured tidal volume and given tidal volume. The results showed that the experimental error was within 2%, which proved the accuracy of this testing equipment. Conclusions The establishment of the physical model of isothermal chambers can accurately detect the tidal volume of ventilator, which provides a theoretical basis and data support for factory inspection and supply more choices for ventilator maintenance in clinic.
ABSTRACT
The occurrence of exercise-induced fatigue can be delayed and exercise endurance can be strengthened by removing lactic acid, decreasing serum creatine kinase, elevating hemoglobin, maintaining blood glucose, eliminating free radical, regulating amino acid metabolism and retaining heart rate with transcutanclus electrical acupoint stimulation (TEAS). Problems in the above researching field are generalized in this paper. For instance, the point selection is relatively simple; the selection of wave band, frequency and duration during the application of TEAS apparatus are not unified; and observation indices mainly remained in the aspect of biochemistry. It also prospects the future directions of TEAS relieving exercise-induced fatigue including selecting acupuncture point by differentiation of symptoms and signs, setting uniform standards for TEAS, and studying the mechanisms of TEAS relieving exercise-induced fatigue by testing gonadal axis, adrenal axis, gene and protein.