Pulse wave, a research focus in both traditional Chinese medicine and Western medicine, which contains a wealth of human physiological and pathological information, has always been the concern of medical practitioners. On the basis of the review on the development of the pulse wave theory and its applications, the existing problems in this field are discussed in this paper. On the basis of the status quo of pulse wave information extraction methods and the utilization of pulse wave in traditional Chinese and Western medicine, a more in-depth study on pulse wave is proposed to make it a bridge connecting traditional Chinese medicine with Western medicine.

To increase patint anesthesia safety, a device for anesthesia respiratory circle and montoring line fixation is designed. The device is composed of the railroad, cardan shaft, union join and fixation plate. Being simple, flexible, reliable and easy to use and store, it has a brilliant perspective in clinical application.

Objective To develop a new multi-purpose face mask for oxygen provision in first aid,which can be used in both war time and peace time.Methods The structure,operating principle and application of a multi-purpose face mask,whose transparent silicone mask body has even the entrance of nested endoscopy and oxygen concentration regulating twist,are introduced in this paper.Results This mask can be used in painless endoscopy and emergent oxygen supply in tracheal intubatton.Conclusion The mask can greatly enhance the safety of painless endoscopy and it can also be used as mask for the use of general anesthesia.

Objective To evaluate mivacurium-induced release of histamine in the patients undergoing general anesthesia.Methods Eighty patients of both sexes,aged 19-58 yr,weighing 42-75 kg,of ASA physical status Ⅰ or Ⅱ,undergoing ureteroscopy under general anesthesia,were randomly divided into 2 groups (n =40 each) using a random number table:rocuronium group (group R) and mivacurium group (group M).Anesthesia was induced with iv midazolam 0.04 mg/kg,fentanyl 3 μg/kg,etomidate 0.3 mg/kg,and mivacurium 0.20 mg/kg (group M) or rocuronium 0.75 mg/kg (group R).Streamlined liner of the pharynx airway (SLIPA) was inserted for mechanical ventilation.PET CO2 was maintained at 35-40 mmHg.Anesthesia was maintained with fentanyl and propofol.Before muscle relaxant administration,at 3 min after muscle relaxant administration and at 5 min after insertion of SLIPA,venous blood samples were collected for determination of plasma histamine concentrations (by HPLC) and the histamine release was classified.Results Compared with group R,the plasma histamine concentration and histamine release were increased at 3 min after muscle relaxant administration in group M.No fatal responses caused by histamine release were found in the two groups.Conclusion Although mivacurium induces release of histamine,it can still be safely used for the patients undergoing ureteroscopy under general anesthesia.

Objective To investigate the effects of different volumes of ropivacaine with the same solubility in supraclavicular brachial plexus block(SCBPB) under ultrasound guidance on ipsilateral diaphragmaticparalysis.Methods Seventy two patients (32 males,40 females, aged 18-65 years, of ASA Ⅰ or Ⅱ, scheduled for the right upper limb fracture internal fixation removal were randomized into group A (0.375% ropivacaine 20 ml) and group B (0.375% ropivacaine 30 ml), 36 cases in each group.The onset and duration of sensory and motor block were observed as well as complication.Diaphragmatic excursion were evaluated by M type ultrasound before and 30 min after drug injection under eupnea and forced respiration through observing diaphragmatic excursion to study diaphragmatic paralysis.Results The onset time of sensory block and maintaining time of sensory block or motor block had no significant difference between the two groups.Compared with group A,the onset time of motor block in group B was significantly shorter (P<0.05).Twelve cases (33.3%) in group A and 22 cases (61.1%) in group B respectively showed complete or partial hemidiaphragmatic paralysis 30 min after drug injection.Compared with group A, the rate of diaphragmatic paralysis in group B was significantly higher (P<0.05).Conclusion Supraclavicular brachial plexus block under ultrasound guidance with 0.375% ropivacaine 20 ml or 30 ml both can provide excellent anesthetic effect.0.375% ropivacaine 20 ml is less likely to lead to diaphragmatic paralysis.

Objective To investigate the influence of ropivacaine with isodosage on heart rate variability (HRV ) following interscalene brachial plexus block under ultrasound guidance. Methods Forty-five ASA grade Ⅰ patients (28 males,1 7 females,aged 18-50 years)scheduled for upper limb fracture internal fixation removal were randomized into group R1 (0.375% ropivacaine 40ml),group R2(0.5% ropivacaine 30ml)and group R3 (0.75% ropivacaine 20 ml),1 5 in each group.Changes in HRV,such as LF,HF,LF/HF,SDNN,RMSSD,PNN50% were evaluated with dynamic electrocardiogram.The degree and duration of sensory and motor block were recorded 30 min after drug injection.Results The anesthetic effect and maintaining time had no significant difference among the groups.The incidence rate of Horner syndrome had no significant difference among groups,group R1 was 26.7%,group R2 20% and group R3 20%.LF(30 min after drug injection)in both group R2 and group R3 were significantly decreased compared with that before drug injection, and the decreased degree of LF had significant difference among the three groups.SDNN(30 min after drug injection)in group R2 and PNN50% in group R3 were significantly decreased compared with that before drug injection.The time required for LF,the most obvious changeable HRV parameter, returning to the pre injection level was (876.2 +43.7)min for group R1,(798.8 + 61.5 )min for group R2, group R3 (712.2 + 45.7 ) min, the difference between the three groups was not statistically significant.Conclusion ISBPB can affect the stability of the cardiovascular autonomic ac-tivities by reducing the cardiac sympathetic nerve function and increasing parasympathetic nerve func-tion,possibly through blockade of stellate ganglion or branches of vagus nerve.Along with the in-crease of the dose of anesthetic,the influence on HRV is greater.

In practice of forensic medicine, potential disease can be associated with fatal asphyxia in re-straint position. Research has demonstrated that nitric oxide (NO) and nitric oxide synthase (NOS) are plentifully distributed in skeletal muscle, contributing to the regulation of contractile and relaxation. In the current study, respiratory functions, indices of diaphragmatic biomechanical functions ex vivo, as well as NO levels in serum, the expressions of diaphragmatic inducible NOS (iNOS) mRNA, and the effects of L-NNA on contractility of the diaphragm were observed in sepsis induced by cecal ligation and punc-ture (CLP) under the condition of restraint position. The results showed that in the CLP12-18 h rats, respiratory dysfunctions; indices of diaphragmatic biomechanical functions (Pt, +dT/dtmax, -dT/dtmax, CT, Po, force over the full range of the force-frequency relationship and fatigue resistance ) declined progressive-ly; the NO level in serum, and iNOS mRNA expression in the diaphragm increased progressively; force increased significantly at all stimulation frequencies after L-NNA pre-incubation. Restraint position 1 h in CLP12 h rats resulted in severe respiratory dysfunctions after relative stable respiratory functions, almost all the indices of diaphragmatic biomechanical functions declined further, whereas little change took place in NO level in serum and diaphragmatic iNOS mRNA expression; and the effects of L-NNA were lack of statistical significance compared with those of CLP12 h, but differed from CLP18 h group. These results suggest that restraint position and sepsis act together in a synergistic manner to aggravate the great reduction of diaphragmatic contractility via, at least in part, the negative modulation of NO, which may contribute to the pathogenesis of positional asphyxia.

Objective To study the effect of auricular point sticking on the cerebrovascular reactivity in hypertension patients of different stages by using Transcranial Doppler (TCD) technology.Method Three hundred hypertension patients were randomized into a treatment group (auricular point sticking) of 180 cases and a control group (medication) of 120 cases. The cerebral arterial hemodynamic indexes were observed and analyzed by TCD before and after intervention.Result In comparing the improvements of cerebral arterial hemodynamic indexes in stage 1-2 hypertension patients, the treatment group was significantly superior to the control group (P＜0.05,P＜0.01); in stage 3 hypertension patients, the improvements of cerebrovascular hemodynamics of the treatment group were significantly better than those in the control group (P＜0.05,P＜0.01).Conclusion Auricular point sticking can improve the cerebrovascular hemodynamics and effectively improve the cerebrovascular reactivity of hypertension patients. TCD can help observe and estimate the cerebral arterial function of hypertension patients, and prevent and intervene in cerebrovascular diseases.

Objective To investigate the influence of different volumes of ropivacaine with isod-osage on diaphragmatic excursion following ultrasound-guided interscalene brachial plexus block. Methods Sixty ASA Ⅰ-Ⅱ patients scheduled for right ulnoradial fracture internal fixation removal were randomized into group A (0.5% ropivacaine 20 ml)and group B (0.75% ropivacaine 13.3 ml) (n=30,each).Diaphragmatic excursion were evaluated by M type ultrasound before,1 5 min and 30 min after drug injection. The degree and duration of sensory and motor block were recorded. Results The anesthetic effect and maintain time had no significant difference between groups;Com-pared with group A,group B had lower incidence of diaphragmatic paralysis (P <0.05).There were 28 (93%)and 22 (73%)cases of patients in group A and group B respectively showed reduction of diaphragmatic excursion more than 50% or even complete paralysis 30 min after drug injection (P <0.05).Conclusion Ultrasound-guided interscalene brachial plexus with 0.5% ropivacaine 20 ml or 0.75% ropivacaine 13.3 ml both can provide excellent block.Compared with 0.75% ropivacaine 13.3 ml,0.5% ropivacaine 20 ml is more likely to lead to diaphragmatic paralysis.

Methods: From March 2020 to March 2023, 100 inpatients with DS were classified into groups A, B, C, and D based on the CARDS classification system. Preoperative radiological data were analyzed to measure the severity of central canal stenosis, facet joint arthropathy, intervertebral disc herniation, and spinal epidural lipomatosis, osteophyte formation, range of motion (ROM), and computed tomography value of the vertebral bodies. The radiological characteristics and clinical contraindications for OLIF were compared among the groups. Results: Of the 100 patients, 51% had clinical contraindications for OLIF, which included 85%, 25%, 62.5%, and 20% of patients in groups A, B, C, and D, respectively. Compared with group B, group A demonstrated greater severity of central canal stenosis, whereas group C showed a higher degree of facet joint arthropathy. More patients in groups A and C had severe central canal stenosis. Regarding the ROM results, group A had segmental stiffness, whereas group D presented relatively unstable slip segments. Conclusions Patients with different DS subtypes have varied radiological characteristics. Groups B and D are suitable candidates for OLIF. Most patients in group A are unsuitable for OLIF because of bony hyperplasia, severe spinal stenosis, and segmental stiffness.