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Based on the 1-D elastic–plastic reactive hydrodynamic code Simplified Stretch Sin, a magnetohydrodynamic (MHD) version SSS/MHD has been developed. The new code is of multifield coupling, making use of the Resistance-Inductance-Capacitance circuit equations related to loading currents and others. To calculate MHD and circuit variables consistently and simultaneously, on the basis of Faraday’s law, the relations between loading currents and magnetic flux in configuration cavities, variation in total magnetic flux and back electromotive force, and an iteration procedure are employed. The sample configurations in magnetically driven isentropic compression experiments (ICEs) here consist of parallel slabs and cavities, in which the step targets are a pair of slabs symmetrical to loading electrodes and of the same sample material but different in thickness. Self-consistent MHD and circuit calculations for ICE step targets of aluminum, tantalum, and plastic binder explosive is reported in this paper. The results agree with the measured ones well, including loading current profiles and velocity histories on samples’ free surface or optics window interface. Since the input data for this code are geometric sizes, material parameters, and original circuit parameters only, its results are independent of measured or empirical data, and could be helpful in design and prediction of ICE or other experiments. [ABSTRACT FROM PUBLISHER]

Objective: To evaluate the effectiveness of Kangfuxin Liquid (a traditional Chinese medicine) gauze and Vaseline gauze in wound healing after necrotizing fasciitis surgery., Method: The study was conducted at The First Affiliated Hospital of Baotou Medical College between February 2020 and February 2022. A total of 54 patients diagnosed with necrotizing fasciitis were randomly assigned to the Vaseline gauze group as the control group, and the Kangfuxin Liquid gauze group as the experimental group. Various aspects of treatment efficacy, wound healing conditions, healing indicators, pain scores, inflammation markers, and adverse reactions were compared between the two groups., Results: The total effective rate in the experimental group (100.00%) was significantly higher than that in the control group (77.78%), with a statistically significant difference The experimental group showed lower scores for secretion, granulation tissue morphology, redness, and swelling compared to the control group, with statistical significance. Additionally, the experimental group exhibited faster slough separation, new epidermis formation, and overall wound healing compared to the control group, with statistical significance. Visual analog scale (VAS) scores on postoperative days 3, 7, 9, and 14 were significantly lower in the experimental group than in the control group. Before treatment, there was no statistically significant difference in the levels of interleukin-17 (IL-17), interleukin-6 (IL-6), and tumor necrosis factor-alpha (TNF-α) between the two groups. However, after treatment, both groups exhibited a decrease in inflammatory markers, and the experimental group had significantly lower levels of IL-17, IL-6, and TNF-α compared to the control group). Furthermore, the incidence of adverse reactions in the experimental group (3.70%) was significantly lower than that in the control group (22.22%)., Conclusion: The utilization of Kangfuxin Liquid gauze in wound healing after necrotizing fasciitis surgery effectively promotes wound healing, provides precise therapeutic effects, significantly reduces patient pain, improves inflammation, and exhibits minimal adverse reactions, thus demonstrating high safety. Therefore, the application of Kangfuxin Liquid gauze in this clinical context is highly recommended.

Objective: To analyze the effect and safety of ultrasound-guided continuous stellate ganglion blockade (CSGB) on neurovascular headache., Methods: The clinical data of 137 patients with neurovascular headache treated in the First Affiliated Hospital of Hebei North University from March 2019 to October 2021 were analyzed retrospectively. According to the treatment schemes, the patients were assigned to the control group (69 cases, treated with flunarizine combined with Oryzanol tablets), or the observation group (68 cases, treated with ultrasound-guided CSGB on the basis of the treatment to the control group). The efficacy, headache symptoms, negative emotions, cerebral artery blood flow velocity, vasoactive substance levels and adverse reactions of the two groups were compared. Univariate and logistic multivariate analyses were conducted to explore the risk factors for recurrence of neurovascular headache after treatment., Results: The observation group showed a notably higher total effective rate than the control group (95.59% vs. 84.06%, P <0.05). In contrast to the control group, the observation group had notably lower self-rating depression scale (SDS) and Self-Rating Anxiety Scale (SAS) scores and showed notably lower posterior cerebral artery (PCA), middle cerebral artery (MCA), basilar artery (BA) and anterior cerebral artery (ACA) levels (P<0.05). After the treatment, the observation group showed higher levels of serum 5-hydroxy tryptamine (5-HT) and Beta-Endorphin (β-EP) than the control group, but a lower serum neurotensin (NT) level than the control group. Moreover, the incidence of adverse reactions in the two groups was not greatly different (10.29% vs. 5.80%). The observation group showed a lower recurrence rate within 6 months after treatment than the control group (5.88% vs. 18.84%, P<0.05). Univariate and logistic multivariate analyses showed that occupation (physical labor), smoking history and sleep quality (poor) may be the risk factors for recurrence of neurovascular headache after treatment ( OR >1, P <0.05), while CSGB may be the protective factor (OR<1, P<0.05)., Conclusion: Ultrasound-guided CSGB has obvious analgesic effect on patients with neurovascular headache, which can shorten the duration of headache, improve the cerebral artery blood flow velocity, regulate the levels of vasoactive substances, relieve negative emotions, and lower the recurrence rate, with a high safety., Competing Interests: None., (AJTR Copyright © 2023.)

Objective: The objective of this article is to make a comparison of the anesthetic effects of the inside and outside fascia iliaca compartment block (FICB) in total hip arthroplasty (THA) and to study the effect of the different approaches of the FICB on postoperative cognitive dysfunction (POCD) and serum inflammatory cytokines in THA patients., Methods: A total of 60 patients who received THA treatment from January 2021 to December 2021 were divided into two groups, namely, Inside group (inside approach of the FICB) and Outside group (outside approach of the FICB), according to the different approaches of the FICB. Forty-eight hours after surgery, we compared the use of ropacaine dosage, visual analogue scale (VAS) score, the use of patient-controlled analgesia (PCA), mini-mental state examination (MMSE) score, the incidence of POCD, and the serum levels of IL-1, IL-6. Secondary indicators include surgical indicators and the quality of anesthesia cannula., Results: The ratio of re-fix the catheter, intubation time, and the use of ropacaine dosage at 48 h after surgery in the Outside group were significantly higher than that in the Inside group ( p  < 0.05), while the depth of cannulation in the Outside group was significantly lower than that in the Inside group ( p  < 0.05). VAS scores were comparable between the Inside and the Outside groups, except at 24 h after surgery. The use of PCA from 24 to 48 h after surgery in the Outside group was significantly higher than that in the Inside group ( p  < 0.05). The MMSE score and the incidence of POCD in the Outside group were higher than that in the Inside group. At the same time, the serum IL-1β levels at 1 and 6 h after surgery and the serum IL-6 levels at 1, 6, 24, and 48 h after surgery in the Outside group were significantly higher than that in the Inside group ( p  < 0.05)., Conclusion: Compared with the outside approach of the FICB, the inside approach of the FICB has better anesthetic effect, better postoperative analgesia, fewer postoperative analgesics, lower incidence of POCD, and lower serum cytokines during the treatment of THA patients., Competing Interests: The authors declare that the research was conducted in the absence of any commercial or financial relationships that could be construed as a potential conflict of interest., (Copyright © 2022 Feng, Zhao, Wang, Sun, Jia and Li.)