Case report of prune belly syndrome: An airway challenge too?

Prune belly syndrome (PBS) is a rare congenital disease presenting a characteristic triad of abdominal muscle deficiency, urinary tract abnormality, and cryptorchidism with associated anomalies of various systems. We report the anesthetic management of an infant with PBS with no obvious facial deformity in whom we encountered an unanticipated difficult airway. Multiple attempts to secure the airway with different supraglottic airway devices were unsuccessful and the trachea could be intubated only on the second attemp

Roles of Ca2+ sensitive K+ channel, phosphodiesterase inhibitor, and ? adrenergic activity in Tridax procumbens leaf extract relaxation of trachea smooth muscle in male Wistar rats

Background: Although traditional use of Tridax procumbens aqueous leaf extract (TPALE) in the management of respiratory disorders is documented, validated scientific evidence is scarce. Aim and Objectives: Trachea smooth muscle (TSM) relaxant activity of TPALE ingestion was investigated in the presence or absence of key TSM relaxant agents. This was with the aim at elucidating relaxant activity of TPALE on TSM. Materials and Methods: Contractile activity of TSM excised from TPALE treated (100 mg/kg) and non-treated rats was assessed pre - and post-incubation in salbutamol (10?4 M), theophylline (10?4 M), caffeine (10?4 M), naringin (10?4 M), and naringenin (10?4 M) using organ chamber connected to a force isometric transducer (Model 7004; Ugo-Basile VArese, Italy). Results: TPALE treatment significantly inhibited contractile activity in TSM. TPALE treated rats showed significantly inhibited contractile activity of the TSM pre (45.6%) and post-incubation (35%) in theophylline when compared to control pre (90.6%) and post-incubation (60%). Incubation of TSM from control and TPALE treated rats in salbutamol, significantly inhibited contractile activity (33.2%) and (37.2%), respectively. After incubation in caffeine, TSM from TPALE treated rats showed significant inhibition in the contractile activity (30.7%) as TSM from control postincubation (38.4%). TSM of TPALE-treated group pre-incubation showed significant inhibition in contractile activity (41.8%) when compared to the TSM of TPALE-treated Group (59.3%) and control (64.5%) post-incubation in naringin. However, incubation of TSM of TPALE-treated rats in naringenin significantly inhibited contractile activity (40.4%) when compared to pre-incubation (45%) and control pre - and post-incubation, respectively (52% and 90%). Conclusion: Calcium-activated K+ channels, ?2 adrenergic stimulation, and antioxidant activity contribute to the mediation of relaxant activity by TPALE in TSM.

Clinical Investigation of Key Parameter Range of AMG Muscle Relaxant Monitor / 中国医疗器械杂志

The accelerometry(AMG) muscle relaxant monitor is the most widely used quantitative muscle relaxant monitor to assess the degree of neuromuscular at present. In this study, the ulnar nerve was stimulated by using train of four stimulation(TOF) mode of the AMG muscle relaxant monitor, and the movement of the adductor pollicis muscle was monitored. In this way, the distribution range of key parameters (acceleration peak value, response time, and TOF ratio) of the adductor pollicis muscle during the use of muscle relaxant in clinical practice is analyzed and will provide a practical basis for the development and improvement of the muscle relaxant monitor.

Effect of acute normovolemic hemodilution autologous blood transfusion on the EEG bispectral index and muscle relaxation in elderly patients undergoing orthopedic surgery / 中国临床药理学与治疗学

AIM: To observe the effect of acute normovolemic hemodilution (ANH) autologous blood transfusion on the EEG bispectral index and muscle relaxation in elderly patients undergoing orthopedic surgery to explore the influence of autologous blood transfusion containing anesthetic components on the quality and safety of postoperative anesthesia recovery. METHODS: Forty patients, aged 65-75, weighing 55-80 kg, ASA grade I-II, with an estimated intraoperative blood loss of more than 600 mL, were selected for elective orthopedic surgery. The patients were randomly divided into two groups (n=20): group A was given acute normovolemic hemodilution (ANH), and the target value of Hct was 28%-30% after induction of anesthesia; group B was the control group which was given routine fluid infusion during operation without ANH. Bispectral index (BIS), TOF values and plasma concentrations of propofol and cisatracurium were measured at the beginning of autotransfusion (T

Research of Perioperative Muscle Relaxant Monitor / 中国医疗器械杂志

Muscle relaxant monitor is a research hotspot in the field of clinical anesthesiology. According to the research status at home and abroad, combing the developing history of muscle relaxant monitor, detecting principle, a variety of electrical stimulation mode, and a variety of detection ways, this study reviews and analyzes the advantages and disadvantages of various testing methods and application status, provides technical research foundation for the degree of nerve block for quantitative assessment of muscle relaxant monitor instrument design. Meanwhile, we advocate that clinicians should use quantitative muscle relaxant monitor as much as possible in the perioperative period to reasonably guide the use of muscle relaxants so as to reduce the risk of complications caused by residual effects of muscle relaxants and provide more scientific and accurate digital guidance for assessing the degree of muscle relaxants of patients.

Different anesthesia management in preterm infants undergoing surgeries for retinopathy of prematurity: A retrospective study / 北京大学学报(医学版)

OBJECTIVE@#To evaluate the effect of different anesthesia management on clinical outcomes in former prematurely born infants undergoing surgeries for retinopathy of prematurity (ROP).@*METHODS@#In this retrospective study, electronic medical record database was searched for all former prematurely born infants (gestational age < 37 weeks and post conceptual age < 60 weeks) who received ROP surgery under inhalational general anesthesia between November 2016 and October 2018. The patients were divided into two groups based on anesthesia management: laryngeal mask airway (LMA) insertion without intravenous muscle relaxant injection and with pressure support ventilation (LMA group) or airway secured with endotracheal tube (ETT) with intravenous muscle relaxant injection and pressure controlled ventilation (ETT group). Primary outcomes included perioperative adverse events and complications. Extubation time and length of stay after surgery were also recorded.@*RESULTS@#Sixty eight preterm infants in the LMA group and 100 preterm infants in the ETT group were included. The incidence of adverse events during surgery (including airway management change and desaturation) was similar in LMA group and ETT group (4.4% vs. 1.0%, P =0.364). During the early recovery period after surgery, the incidence of difficult extubation (extubation time >30 min) was significantly lower in LMA group compared with ETT group (4.4% vs.15.0%, RR=0.262, 95%CI:0.073－0.942, P=0.029). The incidence of respiratory events was similar between the two groups (20.6% vs. 27.0%, P =0.342). However, the incidence of apnea was significantly lower in the LMA group than in the ETT group (5.9% vs.19.0%, RR=0.266, 95%CI: 0.086－0.822, P =0.015). No significant difference was observed between the LMA group and ETT group in incidences of cardiovascular events (0% vs. 1.0%, P =1.000) and unplanned admission to neonatal intensive care unit (5.9% vs. 7.0%, P=0.774). No airway spasm, re-intubation, aspiration or regurgitation was observed during early recovery. During late recovery after returning to ward, the incidence of adverse events was also similar between the two groups (0% vs. 2.0%, P =0.241). The median (IQR) extubation time was 6 (5, 10) min in LMA group and 10 (6, 19) min in ETT group (P < 0.001). The median length of stay after surgery was significantly shortened in LMA group compared with ETT group [20 (17, 22) hours vs. 22 (17, 68) hours, P =0.002].@*CONCLUSION@#Compared with endotracheal intubation with intravenous muscle relaxant injection, laryngeal mask airway insertion without muscle relaxant could achieve an early extubation, and reduce the incidence of apnea during early recovery period in former prematurely born infants undergoing ROP surgery.

A Comparative Study Of Onset Time And Intubating Condition For Different Dose Of Rocuronium In Burn And Non-Burn Patients

An aberrant pharmacodynamics responses to neuromuscular blocking drugs(NMBD)in burn patients increases the potential for lethal hyperkalemia with the administration of depolarizing muscle relaxant eg:succinylcholine and 2.5–5 folds increase in the dose of plasma concentration requirement for non–depolarizing muscle relaxants like :D–tubocurarine,metacurine,pancuronium,atracurium,vecuronium.Therefore Rocuronium may be the drug of choice in burn patients.This study was planned to assess the onset time and intubating conditions with two different doses of rocuronium in patients with thermal injury.It was concluded that in non–burn patient onset time(loss of response to TOF) was 85.5�4.8 sec with a dose of 0.9 mg/kg as compared to 1.2 mg/kg it was 60.55�70.4,while in burn patients (more than 30% burn area) these values were 120.83�6.81 sec and 86.16�5.2 respectively.

Relaxant effects of Peperomia hispidula (Sw.) A. Dietr. on isolated rat tracheal rings / Efecto relajante de Peperomia hispidula (Sw.) A. Dietr. sobre anillos aislados de tráquea de rata

Peperomia hispidula (Sw.) A. Dietr. is used in Mexican traditional medicine for treating respiratory illnesses such as asthma. The latter disorder results from an excessive and inappropriate constriction of airway smooth muscle. The aim of the present study was to evaluate the relaxant activity of P. hispidula on isolated rat tracheal rings contracted with carbachol. The methyleugenol was identified as the main active constituent in the dichloromethane extract. To explore the possible mechanism of action, concentration-response curves were constructed in the presence and absence of propranolol (3 µM), indomethacin (10 µM), glibenclamide (1 µM), and L-NAME (300 µM), finding that neither reduced methyleugenol-induced smooth muscle relaxation. In conclusion, P. hispidula herein displayed relaxant activity on rat tracheal rings. The effect of methyleugenol, was probably not related to the activation of ß2-adrenoceptors, prostaglandins, K+ATP channels or nitric oxide.

Peperomia hispidula (Sw.) A. Dietr. es utilizada en la medicina tradicional mexicana para tratar enfermedades respiratorias como el asma. Este último trastorno es el resultado de una contracción excesiva e inapropiada del músculo liso de las vías respiratorias. El objetivo del presente estudio fue evaluar la actividad relajante de P. hispidula sobre anillos aislados de tráquea de rata contraídos con carbacol. El metileugenol fue identificado como el principal constituyente activo en el extracto de diclorometano. Para explorar el posible mecanismo de acción, se construyeron curvas concentración-respuesta en presencia y ausencia de propranolol (3 µM), indometacina (10 µM), glibenclamida (1 µM), y L-NAME (300 µM), encontrando que ninguno redujo la relajación del músculo liso inducida por metileugenol. En conclusión, P. hispidula muestra actividad relajante en anillos de tráquea de rata. El efecto de metileugenol, al parecer no está implicado con la activación de los receptores ß2-adrenérgicos, prostaglandinas, canales de K+ATP u óxido nítrico.

Comparative study of centrally acting skeletal muscle relaxants nitrazepam and thiocolchicoside in Albino mice

Background: Skeletal muscle relaxants are a heterogeneous group of drugs. As a group, they are structurally and pharmacologically diverse. Skeletal muscle relaxants are usually used as adjunct therapy when initial therapy fails. They are commonly used to treat fibromyalgia, low back pain, neck pain, tension head ache, myofascial pain and muscle spasm.Methods: There were 28 mice were randomly divided into seven groups, each group consists of 4 mice. Group 1(Control): Mice were treated with normal saline and placed on rotating rod with a speed of 18 rpm (ideal speed). Group 2 (Standard-S1): Mice were treated with Nitrazepam at the dose of 2mg/kg body weight and placed on rotating rod. Group 3 (Standard-S2): Mice were treated with Nitrazepam at the dose of 3mg/kg body weight and placed on rotating rod. Group 4 (Standard-S3): Mice were treated with Nitrazepam at the dose of 4mg/kg body weight and placed on rotating rod. Group 5 (Test-T1): Mice were treated with Thiocolchicoside at the dose of 2mg/kg body weight and placed on rotating rod. Group 6 (Test-T2): Mice were treated with Thiocolchicoside at the dose of 3mg/kg body weight and placed on rotating rod. Group 7 (Test-T3): Mice were treated with Thiocolchicoside at the dose of 4mg/kg body weight and placed on rotating rod.Results: In this model inter drug comparisons were carried out with nitrazepam and thiocolchicoside. It was found that both nitrazepam and thiocolchicoside produced central muscle relaxant effect when assessed by rotarod. On iter drug comparision of nitrazepam and thiocolchicoside it was found that by increasing concentration of drug, increased the muscle relaxant property.Conclusions: When assessed by rotarod, it was found that both nitrazepam and thiocolchicoside demonstrated muscle relaxant property but with increased doses of thiocolchicoside produced more muscle relaxant property than the increase in doses of nitrazepam.

The study of skeletal muscle relaxant property of pheniramine maleate in acetylcholine induced contractions on isolated frog rectus muscle

Background: A muscle relaxant is a drug which affects skeletal muscle function and decreases the muscle tone. It may be used to alleviate symptoms such as muscle spasm, pain and hyperreflexia. Skeletal muscle relaxants are heterogeneous group of medications that refer to 2 major therapeutic groups: neuromuscular blockers and spasmolytics. This study is carried out to evaluate the skeletal muscle property of Pheniramine maleate in Acetylcholine Induced Contractions on Isolated Frog Rectus Muscle.Methods: There are various screening techniques available to assess the muscle relaxant property of a drug. For initial screening, frog rectus muscle is used. Here frogs are divided into 4 different groups. Each group contains 6 isolated frog rectus muscles. The experiment is carried out by adding 100?g, 200?g, 400?g and 800?g of pheniramine maleate with 80?g of acetylcholine to the organ bath and response is recorded by kymograph.Results: Pheniramine maleate in various doses like 100?g, 200?g, 400?g and 800?g with 80?g of acetylcholine 100?g showed the maximum contractions of frog rectus muscle in kymograph. At all the doses of Pheniramine maleate, it showed a significant effect of skeletal muscle relaxant property.Conclusions: In conclusion with work done by using pheniramine maleate in different doses along with 80?g of acetylcholine. Pheniramine maleate showed the maximum skeletal muscle relaxant property on frog rectus muscle at 800?g dose.

Assessment of Candida SPP. proliferation in occlusal and palatal splints / Avaliação da proliferação Candida SPP. em placas oclusais e palatais

Candida species inhabit the oral cavity of all individuals who wear complete denture and whose material is the same as that used in splints. Assess the growth of C. albicans in occlusal and palatal splints used for treatment of TMD so that the potential risks of oral microbiota can be assessed. The growth of Candida spp. was assessed in the saliva of 27 individuals wearing splints for treatment of TMD. They were divided into two groups: G1 (n = 14), individuals wearing occlusal splint; and G2 (n = 13), individuals wearing palatal splint. Saliva samples were collected during placement of the splints (T1) and after 4 months (T2), being stored in PBS (10 mL) after 60-second rinses. It was observed that patients wearing occlusal splints (G1) had an increase of 0.648 CFU/mL (Log 10), with statistically significant differences (P = 0.043) for C. albicans (42.33%), C. glabrata (5.52%), C. krusei (41.72%) and C. tropicalis (10.43%). In the group of patients wearing palatal splints (G2), there was a decrease of 0.101 CFU/mL (Log 10), was observed with (P = 0.964) only the presence of C. albicans. The results suggest that growth of Candida species was greater in patients wearing occlusal splints compared to those wearing palatal ones as the presence of different yeast species was found in the former.

Espécies de Candida habitam a cavidade oral de 60-100% de indivíduos usuários de prótese total, cujo material é o mesmo utilizado em placas miorrelaxante. Avaliar o crescimento de C. albicans. em placas relaxantes musculares oclusais e palatais, usadas para o tratamento de DTM, na intenção de verificar riscos em potencial à microbiota bucal. Avaliou-se o crescimento de Candida spp. na saliva de 27 indivíduos, usuários de placa miorrelaxante, em tratamento para DTM no ICT-UNESP. Os indivíduos foram divididos em dois grupos: G1(n=14) ­ placa com recobrimento oclusal; e G2 (n=13) ­ sem recobrimento. As coletas foram com PBS (10mL), em bochechos por 60seg, na instalação das placas (T1) e após 4 meses (T2). Observou-se que pacientes usuários da placa miorrelaxante com recobrimento oclusal (grupo G1) apresentaram aumento de 0,648 UFC/mL (Log10) com diferença estatisticamente significante (p=0,043) analisando-se 42,33% C. albicans, 5,52% C. glabrata, 41,72% C. krusei e 10,43% C. tropicalis. No grupo de pacientes que utilizaram a placa sem recobrimento (grupo G2), observou-se diminuição de 0,101 UFC/mL (Log10) com (p=0,954) apresentando apenas C. albicans. Os resultados sugerem que os pacientes que fizeram uso de placa miorrelaxante com recobrimento oclusal apresentaram maior crescimento de Candida spp. em relação aos usuários de placa sem recobrimento, verificando-se a presença de diferentes espécies da levedura.

Synthesis of silver and gold nanoparticles from leaf of Litchi chinensis and its biological activities

Objective:To synthesize and isolate silver and gold nanoparticles from Litchi chinensis leaf methanolic extract,and to evaluate its comparative biological activities including muscles relaxant,analgesic,anti-inflammatory and antidiarrheal.Methods:The gold and silver nanoparticles were synthesized by dissolving methanolic extract in gold chloride and silver nitrate solution separately which were confirmed by colour change and UV-Vis spectroscopy,and pellets were collected through centrifugation.Biological activities of the extract were conducted on BALB/c mice through various standard methods and the data were subjected to One-way ANOVA.Results:The colorless gold chloride solution changed to purple soon after the addition of plant extract,demonstrating that the reaction took place and gold ions were reduced to gold nanoparticles,while colorless silver nitrate solution changed to light and dark brown that was indicative of silver nanoparticles.The muscles relaxant activity showed that silver nanoparticles were more effective than gold nanoparticles and methanolic extract in traction test.The analgesic activity showed that silver and gold nanoparticles showed highest percentage decrease in acetic acid induced writhing at the doses of 50,100 and 150 mg/kg b.w.The highest anti-inflammatory activity was produced by gold nanoparticles followed by silver nanoparticles,while low activity was observed in methanolic leaf extract.Only the crude methanolic extract showed significant antidiarrheal activity as compared to the standard drug atropine sulphate,while antidiarrheal activities of gold and silver nanoparticles were non-significant.Contusions:The present work concludes that isolated silver and gold nanoparticles from leaf methanolic extract shows strong muscles relaxant,analgesic and antiinflammatory activities while crude methanolic extract possesses good antidiarrheal activity.

Pharmacological basis for the medicinal use of Michelia champaca in gut, airways and cardiovascular disorders

Objective: To discover the mechanism behind ameliorative effects of Michelia champaca (M. champaca) in gastrointestinal, respiratory and cardiovascular disorders. Methods: Anti- spasmodic potential was evaluated by trying the M. champaca extract (aqueous:ethanolic) on rabbit aorta, trachea and jejunum in vitro. Isotonic and isometric transducers coupled with Power Lab data acquisition system was used to record the responses of isolated tissues. Results: M. champaca extract relaxed the spontaneous and high K

Is Sour Taste of Paeoniae Radix Phantom? / 日本東洋医学雑誌

It is theoretically thought that Paeoniae Radix (shakuyaku) has a sour taste and astringent action in traditional Chinese medicine. To examine the practical taste of shakuyaku, 12 volunteers sampled the decoction of Paeoniae Radix Rubra (sekishaku) and Paeoniae Radix Alba (byakushaku). Each volunteer determined how sekishaku and byakushaku taste among “five tastes” : sweet, salty, bitter, sour, or spicy. Most volunteers chose bitter taste and none of them chose sour taste as the foremost taste of shakuyaku. At least in the modern age, shakuyaku may have little sour taste. In this article we discussed the astringent action and the muscle relaxant action of shakuyaku with reference to the sour taste.

Synthesis of silver and gold nanoparticles from leaf of Litchi chinensis and its biological activities

Objective: To synthesize and isolate silver and gold nanoparticles from Litchi chinensis leaf methanolic extract, and to evaluate its comparative biological activities including muscles relaxant, analgesic, anti-inflammatory and antidiarrheal. Methods: The gold and silver nanoparticles were synthesized by dissolving methanolic extract in gold chloride and silver nitrate solution separately which were confirmed by colour change and UV-Vis spectroscopy, and pellets were collected through centrifugation. Biological activities of the extract were conducted on BALB/c mice through various standard methods and the data were subjected to One-way ANOVA. Results: The colorless gold chloride solution changed to purple soon after the addition of plant extract, demonstrating that the reaction took place and gold ions were reduced to gold nanoparticles, while colorless silver nitrate solution changed to light and dark brown that was indicative of silver nanoparticles. The muscles relaxant activity showed that silver nanoparticles were more effective than gold nanoparticles and methanolic extract in traction test. The analgesic activity showed that silver and gold nanoparticles showed highest percentage decrease in acetic acid induced writhing at the doses of 50, 100 and 150 mg/kg b.w. The highest anti-inflammatory activity was produced by gold nanoparticles followed by silver nanoparticles, while low activity was observed in methanolic leaf extract. Only the crude methanolic extract showed significant antidiarrheal activity as compared to the standard drug atropine sulphate, while antidiarrheal activities of gold and silver nanoparticles were non-significant. Conclusions: The present work concludes that isolated silver and gold nanoparticles from leaf methanolic extract shows strong muscles relaxant, analgesic and anti-inflammatory activities while crude methanolic extract possesses good antidiarrheal activity.

Pharmacological basis for the medicinal use of Michelia champaca in gut, airways and cardiovascular disorders

Objective:To discover the mechanism behind ameliorative effects of Michelia champaca (M. champaca) in gastrointestinal, respiratory and cardiovascular disorders.Methods:Anti- spasmodic potential was evaluated by trying the M. champaca extract (aqueous:ethanolic) on rabbit aorta, trachea and jejunum in vitro. Isotonic and isometric transducers coupled with Power Lab data acquisition system was used to record the responses of isolated tissues.Results:M. champaca extract relaxed the spontaneous and high KConclusion:M. champaca possesses spasmolytic, airways relaxant and vasodilator actions mediated perhaps due to blocking of Ca

Sedative and muscle relaxant activities of diterpenoids from Phlomidoschema parviflorum

Abstract Phlomidoschema parviflorum (Benth.) Vved. (Basionym: Stachys parviflora Benth.) Lamiaceae, have significance medicinal importance as it is used in number of health disorders including diarrhea, fever, sore mouth and throat, internal bleeding, weaknesses of the liver and heart genital tumors, sclerosis of the spleen, inflammatory tumors and cancerous ulcers. The present contribution deals with the sedative and muscle relaxant like effects of diterpenoids trivially named stachysrosane and stachysrosane, isolated from the ethyl acetate soluble fraction of P. parviflorum. Both compounds (at 5, 10 and 15 mg/kg, i.p) were assessed for their in vivo sedative and muscle relaxant activity in open field and inclined plane test, respectively. The geometries of both compounds were optimized with density functional theory. The molecular docking of both compounds were performed with receptor gamma aminobutyric acid. Both compounds showed marked activity in a dose dependent manner. The docking studies showed that both compounds interact strongly with important residues in receptor gamma aminobutyric acid. The reported data demonstrate that both compounds exhibited significant sedative and muscle relaxant-like effects in animal models, which opens a door for novel therapeutic applications.

Comparison of the duration of neuromuscular blockade following a single bolus dose of rocuronium or cisatracurium in laparoscopic gynaecological surgery and conventional open surgery / 复旦学报（医学版）

Objective To compare the duration of neuromuscular blockade in laparoscopic and open surgical approaches following a single bolus dose of rocuronium or cisatracurium.Methods One hundred female patients underwent either laparoscopic or open gynaecological surgery were randomly and equally divided into OR group (rocuronium administered in open surgery),OC group (cisatracurium administered in open surgery),LR group (rocuronium administered in laparoscopic surgery) and LC group (cisatracurium administered in laparoscopic surgery).Anaesthesia was induced with sufentanil of 0.5 μg/kg and propofol of 2 mg/kg,and neuromuscular blockade was induced with rocuronium of 0.9 mg/kg or cisatracurium of 0.15 mg/kg,intravenously.Then adductor pollicis trainof-four responses following ulnar nerve stimulation were monitored with mechanomyography.We recorded the duration of the first twitch (T1) occurrence after the injection of rocuronium or cisatracurium,and the duration from T1 recovered to 5 ％ and 25 ％ of baseline.Results The mean time from the end of injection of rocuronium until spontaneous recovery to T1,and to recovery to 5％and 25％ of baseline,was significantly prolonged in LR group [(44.8 ± 10.7) min,(52.8 ± 11.2) min and (62.6 ± 13.5) min] compared with OR group [(36.2 ± 4.0) min,(41.8 ± 6.8) min and (49.5 ±7.5) min] (P all＜0.05) On the other hand,there was no significant difference on the duration of neuromuscular blockade between LC group and OC group.Conclusions Neuromuscular blockade may be prolonged following a single bolus dose of rocuronium given during laparoscopic procedures,which should be on the alert,and assess neuromuscular function to ensure safe recovery.

A design and analysis of a monitoring system for muscle relaxation / 中国医学装备

Objective:To design and analyze a muscle relaxation monitoring system so as to increase the anesthesia efficiency and safety.Methods: The hardware design of system was based on single chip machine (STC89C52RC), and it has the function of LCD real-time display for pressure change and the printing function. The design of software mainly included the system main program design, pressure sensor subroutine, A/D conversion subroutine, LCD real-time display subroutine and printer subroutine, etc.Results:Through the multiple times of test and improvement for the system, the system has achieved stably run, and the pressure value could achieve accurately display between 0-100N.Conclusion: The monitoring system of muscular relaxation has series of advantages, such as simple circuit design, low cost, higher reliability and practicability and so on. It can real-timely and effectively monitor the change of the indexes of muscular relaxation for patients during operation. And the anesthesiologist can effectively control and change medication for patients. In this way, the monitoring system can increase the anesthetic efficiency and decrease the incidence of postoperative residual muscle relaxant.

Application of general anesthesia without muscle relaxant conbined with right stellate ganglion block on patients undergoing oropharyngeal surgery / 安徽医科大学学报

To observe the feasibility and safety of general anesthesia without muscle relaxant tracheal intubation combined with right stellate ganglion block (SGB) on patients undergoing oropharyngeal surgery.60 patients undergoing selective oropharyngeal surgery were randomly and equally divided into 2 groups:named in non muscle relaxation group and combination group.MAP,HR,SpO2 and PETCO2 were recorded before administration (T0),immediately before tracheal intubation(T1),and immediately after tracheal intubation(T2),and immediately after skin incision (T3).The VAS score at 4,8,12,24 h after surgery were also recorded.The difference of the satisfactory intubation conditions was not statistically significant.MAP and HR were increased at T2 and T3 as compared with non muscle relaxation group.Compared with combination group,HR increased at T2 and T3 in group A.The VAS of patients in combination group was lower than non muscle relaxation group (P ＜ 0.05).Stellate ganglion block on patients undergoing oropharyngeal surgery in general anesthesia without muscle relaxant might provide not only satisfactory intubation conditions but also provoke earlier recovery and improve the quality of postoperartive analgesia.