目的 觀察不同濃度腎上腺素與利多卡因混合液頭皮浸潤注射對開顱術患者血流動力學的影響。方法 選取2010年5月－10月80例顱內腫瘤患者，隨機分成4組，行1%利多卡因溶液混合不同濃度的腎上腺素16 mL頭皮浸潤注射。腎上腺素濃度：A組2.5 μg/mL、B組5.0 μg/mL、C組7.5 μg/mL、D組10.0 μg/mL。記錄注射前（T0）、注射后5 min內（T1-10）心率（HR）、平均動脈壓（MAP）、收縮壓（SBP）、舒張壓（DBP），根據各時段的MAP最低值和最高值，計算MAP的降低率和升高率，計數各組MAP下降10%以內、10%～20%和20%以上的例數。 結果 C組的MAP下降例數最多且MAP下降率最高，與其他組間比較差異有統計學意義（P＜0.05）。組內比較，C組MAP、SBP在1.5、2.0、2.5 min時、DBP在2 min時和D組MAP和DBP在1.5、2.0 min時下降差異有統計學意義（P＜0.05）。4組血壓下降的同時伴HR增快，但HR組間差異無統計學意義（P＞0.05）。 結論 低濃度的腎上腺素與10%利多卡因混合液用于開顱術患者頭皮浸潤注射時可導致血壓下降。
ObjectiveTo review the research progress of cementless intercalary prosthesis stem. MethodsThe literature about the cementless intercalary prosthesis in treatment of bone defects of extremities was reviewed, and the designing and application of prosthesis stem were analyzed. ResultsCementless intercalary prosthesis has the advantages of good biocompatibility. However, there are also some disadvantages, including the multiple factors affecting the fixation of the prosthesis stem and individual differences in the stability of the prosthesis. The methods to improve the fixation stability of prosthesis stem mainly include the optimization of prosthesis stem shape, addition of auxiliary fixation, and improvement of coating materials on the stem surface as well as porous structure of the stem surface. Among these methods, augment with auxiliary fixation has the most satisfactory effect on improving the stability of prosthesis. However, the deficiency of the method is the increasing risk of the larger incision exposure and surgical trauma. ConclusionImproving the design and fixation method of the cementless intercalary prosthesis stem can further improve the stability of the prosthesis. Under the premise of avoiding increasing surgical trauma as much as possible, addition of the auxiliary fixation can be a feasible choice to improve the fixation stability of prosthesis.
Objective To investigate the effects of percutaneous cement discoplasty (PCD) and percutaneous cement interbody fusion (PCIF) on spinal stability by in vitro biomechanical tests. Methods Biomechanical test was divided into intact (INT) group, percutaneous lumbar discectomy (PLD) group, PCD group, and PCIF group. Six specimens of L4, 5 (including vertebral bodies and intervertebral discs) from fresh male cadavers were taken to prepare PLD, PCD, and PCIF specimens, respectively. Before treatment and after the above treatments, the MTS multi-degree-of-freedom simulation test system was used to conduct the biomechanical test. The intervertebral height of the specimen was measured before and after the axial loading of 300 N, and the difference was calculated. The range of motion (ROM) and stiffness of the spine in flexion, extension, left/right bending, and left/right rotation under a torque of 7.5 Nm were calculated. Results After axial loading, the change of intervertebral height in PLD group was more significant than that in other three groups (P<0.05). Compared with INT group, the ROM in all directions significantly increased and the stiffness significantly decreased in PLD group (P<0.05). Compared with INT group, the ROM of flexion, extension, and left/right rotation in PCD group significantly increased and the stiffness significantly decreased (P<0.05); compared with PLD group, the ROM of flexion, extension, and left/right bending in PCD group significantly decreased and the stiffness significantly increased (P<0.05). Compared with INT group, ROM of left/right bending in PCIF group significantly decreased and stiffness significantly increased (P<0.05); compared with PLD group, the ROM in all directions significantly decreased and the stiffness significantly increased (P<0.05); compared with PCD group, the ROM of flexion, left/right bending, and left/right rotation significantly decreased and stiffness significantly increased (P<0.05). Conclusion Both PCD and PCIF can provide good biomechanical stability. The former mainly affects the stiffness in flexion, extension, and bending, while the latter is more restrictive on lumbar ROM in all directions, especially in bending and rotation.
ObjectiveTo systematically review the efficacy and safety of acupuncture as adjuvant treatment on sepsis related gastrointestinal dysfunction. MethodsThe PubMed, Web of Science, Cochrane Library, WanFang Data, CNKI, VIP and SinoMed databases were electronically searched to collect randomized controlled trials (RCTs) related to the objectives from inception to July, 2024. Two reviewers independently screened literature, extracted data and assessed the risk of bias of the included studies. Meta-analysis was then performed by using RevMan 5.3 software. ResultsA total of 20 RCTs involving 1 384 patients were included. The results of meta-analysis showed that the bowel sound frequency per minute on the 7th day (MD=0.82, 95%CI 0.57 to 1.07, P<0.01), the effective rate of improvement in sepsis-related gastrointestinal dysfunction on the 7th day (RR=1.38, 95%CI 1.25 to 1.54, P<0.01), intra-abdominal pressure at 7th day (MD=?1.52, 95%CI ?2.21 to ?0.83, P<0.01), gastric residential volume on the 7th day (MD=?14.94, 95%CI ?24.72 to ?5.16, P<0.01), APACHE-Ⅱ score at 7th day (MD=?2.40, 95%CI ?3.56 to ?1.24, P<0.01), concentrations of procalcitonin on the 7th day (MD=?1.82, 95%CI ?2.68 to ?0.97, P<0.01) in the acupuncture group were all superior to the conventional treatment group. However, there was no significant difference between the two groups concerning the 28-day mortality. ConclusionCurrent evidence shows that acupuncture adjuvant treatment can promote the recovery of bowel sounds, reduce intra-abdominal pressure, and decrease gastric residual volume in patients with sepsis and gastrointestinal dysfunction, with good safety. Due to the limited quality and quantity of the included studies, more high quality studies are needed to verify the above conclusion.