Bloqueo de nervios periféricos guiados por ecografía en pacientes con hemofilia / Ultrasound-guided peripheral nerve blocks in hemophilia with patients

INTRODUCTION: Hemophilia is a coagulation disorder; it is a recessive disease linked to the X chromosome. In patients with hemophilia (PWH), regional anesthetic blocks have been considered a contraindication. Safety has been increased by performing them guided by Ultrasound. The objective of our work is to show our experience in PWH and peripheral nerve blocks. MATERIAL AND METHOD: 41 PWH were operated under regional analgesia with Ultrasound-Guided Peripheral Nerve Blocks associated with general anesthesia in the period 2006-2019. All patients were Hemophilia A. Three patients had inhibitors. The mean age was 35 years. 40 lower limb blocks and 2 upper limb blocks were performed. The Sonosite® equipment model Micromaxx was used. RESULTS: All patients presented adequate peripheral nerve block for an average time of 12.5 hours (8-24). There were no complications. CONCLUSIÓN: The present study shows that Ultrasound-Guided Peripheral Nerve Blocks in PCH is a safe procedure, which reduces the requirements of opioids and the side effects of them, improving the postoperative period and the recovery of patients.

INTRODUCCIÓN: La hemofilia es un trastorno de la coagulación, es una enfermedad recesiva ligada al cromosoma X. En pacientes con hemofilia (PCH) los bloqueos regionales anestésicos se han considerado una contraindicación. Se ha aumentado la seguridad realizándolos guiados por Ecografía. El objetivo de nuestro trabajo es mostrar nuestra experiencia en PCH y bloqueos de nervios periféricos. MATERRIAL Y MÉTODO: 41 PCH fueron operados bajo analgesia regional con Bloqueos de Nervios Periféricos Guiados por Ecografía asociado a la anestesia general en el período 2006-2019. Todos los pacientes eran hemofilia A. Tres pacientes presentaban inhibidores. La edad media fue de 35 años. Se realizaron 40 bloqueos de miembros inferiores y 2 bloqueos miembros superiores. Se utilizó el equipo Sonosite® modelo Micromaxx. RESULTADOS: Todos los pacientes presentaron adecuado bloqueo de nervio periférico durante un tiempo promedio de 12,5 h (8-24). No se presentaron complicaciones. CONCLUSIÓN: El presente estudio muestra que los Bloqueos de Nervios Periféricos Guiados por Ecografía en PCH es un procedimiento seguro, que reduce los requisitos de los opioides y los efectos secundarios de ellos, mejorando el posoperatorio y la recuperación de los pacientes.

Continuous peripheral nerve block for in-patients with lower limb ischemic pain

OBJECTIVES: Demonstrate that continuous peripheral nerve block (CPNB) may be an alternative with adequate analgesia and a lower incidence of side effects for ischemic pain due peripheral obstructive arterial disease (POAD). METHODS: Retrospective cohort study with 21 patients with POAD, Fontaine IV graded, with foot pain. Patients were submitted to continuous sciatic nerve block (CSNB), through a perineural catheter. Primary outcomes were pain intensity (by numerical rating scale) and opioid consumption (in oral morphine equivalents). RESULTS: During CSNB, pain scores markedly decreased in comparison to the pre-block period. CONCLUSIONS: CPNB may be a good option for ischemic pain treatment in in-patients, as it provides effective pain control with fewer adverse effects.

Práctica de los bloqueos nerviosos periféricos en Uruguay: Resultados de una encuesta en línea / On-line survey: Perifheral Nerve blocks in Uruguay

OBJECTIVE: The objective of this study was to know the current reality of Uruguayan anesthesiologists in terms of the frequency of peripheral nerve blocks, which is the most used neurolocation method, the most frequent blockages and which has been the main source of training in this zone. METHODS: After the approval of the institutional ethics committee, it sent a survey through the SurveyMonkey® server to all the anesthesiologists partners of the Uruguayan Society of Anesthesiology whose design was based on the completion in 2016 by Corvetto et al., modifying it and using only the questions referred to peripheral regional blocks to make the data comparable. Data is processed anonymously. RESULTS: The survey was sent to 404 anesthesiologists, responding to the same 201 participants (49.8%), of these 66.2% performed peripheral nerve blocks, interscalenic (40.9%), femoral (46%), axillary and ankle (6.6%) respectively. The most used neurolocation technique is ultrasound either as a single technique (45.1%) or combined with neurostimulation (34.5%). The primary source of training is self-training (42.7%) followed by residency programs (31.7%) and workshops (19.5%). CONCLUSIONS: There is an improvement in our environment regarding the use of peripheral nerve blocks by anesthesiologists with a growing use of ultrasound as the main method of neurolocation.

OBJETIVO: Conocer la realidad actual de los anestesiólogos uruguayos en cuanto a la realización de bloqueos nerviosos periféricos, método de neurolocalización más utilizado, bloqueos más frecuentes y cuál ha sido la principal fuente de formación en esta área. MÉTODO: Tras la aprobación del comité de ética institucional, se envió una encuesta a través del servidor SurveyMonkey® a todos los anestesiólogos socios de la Sociedad Uruguaya de Anestesiología cuyo diseño se basó en la realizada en 2016 por Corvetto y cols, modificando la misma y utilizando sólo las preguntas referidas a los bloqueos regionales periféricos para hacer los datos comparables. Los datos se procesaron de forma anónima. RESULTADOS: La encuesta fue enviada a 404 anestesiólogos, respondiendo la misma 201 participantes (49,8%), de estos 66,2% afirmó realizar bloqueos de nervio periférico, dentro de estos: interescalénico (40,9%), femoral (46%), axilar y tobillo (6,6%) respectivamente. La técnica de neurolocalizacion más utilizada es el ultrasonido ya sea como técnica única (45,1%) o combinada con neuroestimulación (34,5%). La fuente primaria de formación es la autoformación (42,7%) seguido de los programas de residencia (31,7%) y los workshops (19,5%). CONCLUSIONES: Existe una mejora en nuestro medio respecto al uso de los bloqueos nerviosos periféricos por parte de los anestesiólogos con una creciente utilización del ultrasonido como principal método de neurolocalización.

Effects of anesthesia mode on the perioperative period and postoperative outcome in patients with traumatic fractures / 解放军医学杂志

Objective To retrospectively analyze the effects of anesthesia mode on the perioperative period and postoperative outcome in patients with traumatic fractures. Methods A total of 699 patients with traumatic shoulder fractures and hip fractures, admitted in the Fourth Medical Center of PLA General Hospital from Mar. 2016 to Aug. 2018, were divided into general anesthesia (GA) group (n=331) and regional block anesthesia (RA) group (n=368) according to different anesthesia mode. The preoperative basic conditions, change rates of intra-operative mean arterial pressure (MAP) and heart rate (HR), amount of blood loss and transfusion, and postoperative outcome were recorded for analyzing whether different anesthesia methods affected the outcome of fracture patients in the real world. Results There was no significant difference in the preoperative comorbidity between the two groups (P>0.05); Compared with the GA group, patients in RA group were older (P0.05), but age analysis indicated that, regardless of the mode of anesthesia, the incidence of postoperative complications increases with age (P<0.05). Compared with GA, patients older than 80 years reduced the incidence of postoperative complications significantly when they chose RA, and the difference was statistically significant (P=0.039). Meanwhile, compared with GA group, patients in RA group was lower and shorter in preoperative time, operative time, length of stay and cost in hospital, showing statistical difference (P<0.05). Conclusions Although there was no significant difference in postoperative outcomes of patients with overall fractures under different anesthesia modes, postoperative complications will increase with age. The advantages of regional block anesthesia are mainly reflected in fracture patients ≥80 years.

Peripheral Nerve Blocks in Patients with Diabetic Neuropathy and other Neuropathies: A Narrative Review.

Neuropathy, arising from different etiologies, can be a majordebilitating condition that leads to pain,reduces physicalmovement and amputation. Among all known neuropathyetiologies, diabetes mellitus is one of the significant causesthat results in peripheral and other type of neuropathies thatresult in physiological discomfort and mortality. Prolongedhyperglycemia-induced oxidative stress causes damage toneuron resulting in a range of symptoms to pain and internalorgan failure. Although treatment strategies exist to alleviatethe pain symptoms, there is no existing therapy to eliminatethe root cause of neuropathy. Presently, peripheral nerveblock by several anesthetic agents shows great promise inmanaging diabetes-induced neuropathy and neuropathiesof other etiologies. This article discusses different types ofneuropathies and their classifications with special emphasison diabetic neuropathy. The following section discusses theextent of severity of the condition in terms of its epidemiologyand associated complications. The article provides an elaborateidea on different anesthetic agents used in peripheral nerveblock in diabetic neuropathy and other neuropathic conditions.Peripheral nerve block shows a potential efficiency whensingle and combination doses of anesthetics are used. Differentadjuvants are also used in combination with anesthetics toprolong and enhance the effect of analgesia. Looking at theseverity, physiological, psychosocial and economic burden ofthe neuropathic disease, more in-depth studies and discussionshould be initiated to strengthen the use of peripheral nerveblock in the management of diabetic and other neuropathies.

Anestesia neuroaxial y bloqueos regionales: lineamientos de anticoagulación para su aplicación / Neuraxial anesthesia and regional blocks: anticoagulation guidelines for its application

El personal de salud actualmente se enfrenta a múltiples desafíos en su práctica diaria, uno de ellos, es el manejo apropiado de anticoagulación de quienes por distintas causas demandan este tratamiento. Esta revisión bibliográfica ofrece pautas, especialmente para anestesiólogos, sobre el adecuado empleo de anticoagulantes y antiagregantes en pacientes que requieran anestesia/analgesia neuroaxial, bloqueos de plexo, bloqueos periféricos y catéteres; para evitar/prevenir complicaciones potencialmente devastadoras que el sangrado en el neuroaxis o sitios no compresibles podría ocasionar. Se ha basado en las actuales recomendaciones de ASRA 2018

The Health personnel currently face multiple challenges in their daily practice, one of them is the appropriate anticoagulation management of patients, who for various reasons demand this treatment. This literature review offers guidelines, especially for anesthesiologists, on the adequate use of anticoagulants and antiaggregants in patients requiring neuraxial anesthesia / analgesia, plexus blocks, peripheral blocks and catheters; to prevent / avoid potentially devastating complications that bleeding in neuroaxis or non-compressible sites could cause. It has been based on the current recommendations of ASRA 2018

Quadratus lumborum block: are we aware of its side effects? A report of 2 cases / Bloqueio do quadrado lombar: estamos cientes de seus efeitos colaterais? Relato de dois casos

Abstract Background and objectives The quadratus lumborum block was initially described in 2007 and aims at blocking the same nerves as the ones involved on the Transverse Abdominis Plane block, while accomplishing some visceral enervation as well due to closer proximity with the neuroaxis and sympathetic trunk. Given its versatility, we have successfully used it in a wide range of procedures. We report two cases where we believe the dispersion of local anesthetic is likely to have led to a previously undescribed complication. Clinical reports We report two cases in which we performed a quadratus lumborum type II block and general anesthesia for total gastrectomy and right hemicolectomy. There were no noteworthy events while performing the block and inducing general anesthesia, but within 30-40 min serious hypotension and tachycardia were noted. As other motives for hypotension were ruled out, the event was interpreted as block-induced sympatholysis due to cephalad dispersion of the local anesthetic to the paravertebral and epidural space, and successfully managed with ephedrine and increase of the crystalloid infusion rate. Conclusions The quadratus Lumborum block is safe to execute and provides effective abdominal wall and visceral analgesia. However, the possibility of eliciting undesired episodes should prompt caution when performing this block and practitioners should thereafter remain vigilant. Questions regarding ideal dosing, volumes, timing of block and pertinence of catheters remain to be answered.

Resumo Justificativa e objetivos O bloqueio do quadrado lombar foi primeiramente descrito em 2007 e tem como objetivo o bloqueio dos mesmos nervos envolvidos no bloqueio do plano transverso abdominal, ao atingir algumas inervações viscerais, bem como devido à maior proximidade com o neuroeixo e cadeia simpática. Dada a sua versatilidade, temos usado esse bloqueio com sucesso em uma grande variedade de procedimentos. Relatamos dois casos nos quais acreditamos que a dispersão do anestésico local pode ter levado a uma complicação não descrita previamente. Relatos clínicos Relatamos dois casos nos quais realizamos o bloqueio do quadrado lombar tipo II e anestesia geral para gastrectomia total e hemicolectomia direita. Não houve eventos notáveis durante o bloqueio e a indução da anestesia geral, mas, dentro de 30 a 40 minutos, observamos grave hipotensão e taquicardia. Como outros motivos para a hipotensão foram descartados, o evento foi interpretado como simpatólise induzida pelo bloqueio devido à dispersão cefálica do anestésico local para os espaços paravertebral e epidural e tratado com sucesso com efedrina e aumento da taxa de infusão de cristaloides. Conclusões O bloqueio do quadrado lombar oferece segurança na execução e fornece analgesia eficaz à parede abdominal e vísceras. Porém, a possibilidade de provocar episódios indesejáveis requer cautela em sua execução e, por conseguinte, os médicos precisam estar atentos. As questões relacionadas à dosagem ideal, aos volumes, ao tempo de bloqueio e à pertinência dos cateteres permanecem indefinidas.

Ultrasound-guided peripheral nerve blocks in anticoagulated patients - case series / Bloqueios de nervos periféricos guiados por ultrassom em pacientes anticoagulados - série de casos

Abstract Background and objectives: The advent of ultrasound has brought many benefits to peripheral nerve blocks. It includes both safety and effectiveness, given the possibility of visualizing the neurovascular structures and the needle during the procedure. Despite these benefits, there is no consensus in the literature on the use of this technique in anticoagulated patients or with other coagulation disorders. Moreover, peripheral blocks vary in depth, spreadability, and possibility of local compression. However, few societies take it into account when drawing up its recommendations, establishing a single recommendation for performing peripheral blocks, regardless of the route used. The objective of this series is to expand the discussion on peripheral nerve block in anticoagulated patients. Case reports: This series reports 9 cases of superficial peripheral nerve blocks guided by ultrasound in patients with primary or secondary dyscrasias. All blocks were performed by experienced anesthesiologists in the management of ultrasound, and there was no bruising or neurological injuries in the cases. Conclusions: This case series support the discussion on conducting surface peripheral nerve blocks and easy local knowledge as the axillary, interscalene, femoral, saphenous or popliteal in anticoagulated patients, on dual antiaggregation therapy and/or with other coagulation disorders, provided that guided by ultrasound and performed by an anesthesiologist with extensive experience in guided nerve blocks. However, larger series should be performed to prove the safety of the technique for these patients.

Resumo Justificativa e objetivos: O advento da ultrassonografia trouxe inúmeros benefícios para os bloqueios de nervos periféricos. Agregou tanto segurança quanto eficácia, dada a possibilidade de visualização de estruturas neurovasculares e da agulha durante o procedimento. Apesar desses benefícios, não há consenso na literatura sobre o uso da técnica em pacientes anticoagulados ou com outros distúrbios da coagulação. Além disso, os bloqueios periféricos variam com relação à profundidade, expansibilidade e possibilidade de compressão local. Porém, poucas sociedades levam isso em consideração para elaborar suas recomendações, estabelecem um recomendação única para bloqueios periféricos, independentemente da via usada. O objetivo desta série é ampliar a discussão sobre bloqueio de nervos periféricos em pacientes anticoagulados. Relato de casos: Esta série relata 9 casos de bloqueios de nervos periféricos superficiais guiados por ultrassonografia em pacientes com discrasias primárias ou secundárias. Todos os bloqueios foram feitos por anestesiologistas experientes no manejo do ultrassom, que não foram observados hematomas ou lesões neurológicas nos casos. Conclusões: A série de casos em questão ajuda a discussão sobre bloqueios periféricos superficiais e de fácil compressão local, como o axilar, interescalênico, femoral, safeno ou poplíteo, em pacientes anticoagulados, duplamente antiagregados e/ou com outros distúrbios da coagulação desde que guiados por ultrassom e feitos por anestesiologista com vasta experiência em bloqueios guiados. Entretanto, maiores séries devem ser feitas para comprovar a segurança da técnica para esses pacientes.

Perioperative regional pain management of TKA / 基础医学与临床

Perioperative pain management play a critical role in rapid recovery and long term outcome in patient undergoing total knee arthroplasty.With the advancement of peripheral nerve block, technique such as femoral nerve block, sciatic nerve block, abductor canal block have play an important role in perioperative pain management.Local infiltration analgesia have also gained popularity.The ultimate goal of perioperative pain management is to ensure analgesia effect and maintain good motor function of lower extremity.We are still in searching of a safe, effective, analgesia without motor block.Currently multimodal analgesia seems to be the most favorable choice.

Application of ultrasound-guided peripheral nerve block technique in standardized training for resi-dent doctors / 中华医学教育探索杂志

Mastering peripheral nerve block technique is a basic requirement for residents stan-dardization training. Ultrasound-guided nerve block has broken through the limitation of traditional blind operation, promoted the quality and safety of anesthesia, and improved the quality of the peripheral nerve block teaching. However, the safety of ultrasound-guided nerve block technique must be based on the speci-fication training. In the teaching experience, we have used theoretical study, simulation training and clinical practice to explore a new method for upgrading the quality of resident doctor training.

Application of peripheral nerve block in anesthesia management of patients with trauma of the tibia and fibula / 第二军医大学学报

Objective To explore the value of peripheral nerve block for anesthesia management in patients with lower extremity injuries, so as to discuss its role in future war injury. Methods Totally 58 patients with open fracture of the lower limbs were anesthetized for external fixation and debridement, with the procedure simulating the anesthesia of war extremity injury management. After antishock treatment, the patients were randomly divided into Group P and Group S, with 29 in each group. Patients in Group P were anesthetized using fascia iliaca block combined with sciatic nerve block under ultrasound guidance, and spinal-epidural anesthesia was used in Group S. The general condition of patients, anesthesia complications, anesthesia efficiency, analgesia duration after anesthesia and patients overall satisfaction (VAS score) were compared between the two groups. Results There was no significant difference between the two groups in the general condition before anesthesia. After anesthesia, 20 patients (71%) in Group S suffered circulatory collapse and 2 patients (7%) in Group S suffered respiratory depression, and their conditions were stable (only with 1 patient dropped off due to intubation after anesthesiologist treatment). While no anesthesia complication occurred in Group P. Patients in Group P had a significantly shorter pre-operative anesthesia time than that in Group S (P<0. 01), and intra-operative infusion volume in Group P was lower than that in Group S (P<0. 01). The post-operative analgesia time in Group P was significantly longer than that in Group S (P<0. 01). The overall satisfaction and analgesia effect of patients in Group P was better than those in Group S (P<0. 01). Conclusion Peripheral nerve block anesthesia technique is safer and more comfortable than traditional spinal-epidural anesthesia for patients with trauma of the tibia and fibula.

Ilioinguinal and iliohypogastric nerve block / Монголын Анагаах Ухаан

Ilioinguinal (II) and iliohypogastric (IH) nerve blocks are often performed to provide intra- andpostoperative analgesia for hernia repair in children and adults. Several techniques are describedin the literature. Recently an ultrasound guided technique for II and IH nerve blocks were describedin the international journals. The block success rates are variable specially for using anatomicallandmark blind techniques. In the present study, the anatomical variations in course of the II andIH nerves are described. Knowledge of the course of these nerves in the inguinal region, and anunderstanding of variations seen in their topography, can decrease the incidence of postoperativecomplications and adverse effects. Ultrasound guidance of block performance will shorten the time,reduce the number of needle passes and shorten the block onset time. Blocks may be performedusing lower local anesthetic doses.

A comparison of strength for two continuous peripheral nerve block catheter dressings / 대한마취과학회지

BACKGROUND: Despite the benefits of continuous peripheral nerve blocks, catheter dislodgment remains a major problem, especially in the ambulatory setting. However, catheter dressing techniques to prevent such dislodgment have not been studied rigorously. We designed this simulation study to test the strength of two commercially available catheter dressings. METHODS: Using a cadaver model, we randomly assigned 20 trials to one of two dressing techniques applied to the lateral thigh: 1) clear adhesive dressing alone, or 2) clear adhesive dressing with an anchoring device. Using a digital luggage scale attached to a loop secured by the dressing, the same investigator applied steadily increasing force with a downward trajectory towards the floor until the dressing was removed or otherwise disrupted. RESULTS: The weight, measured (median [10th–90th percentile]) at the time of dressing disruption or removal, was 1.5 kg (1.3–1.8 kg) with no anchoring device versus 4.9 kg (3.7–6.5 kg) when the dressing included an anchoring device (P < 0.001). CONCLUSIONS: Based on this simulation study, using an anchoring device may help prevent perineural catheter dislodgement and therefore premature disruption of continuous nerve block analgesia.

Raquianestesia total após bloqueio do plexo lombar: relato de caso / Total spinal block after lumbar plexus block: a case report / Raquianestesia total posterior al bloqueo del plexo lumbar: relato de caso

O bloqueio do plexo lombar (BPL) é um método adequado para uso em pacientes idosos e cirurgias na extremidade inferior. Muitas complicações podem ser observadas durante o BPL, mas não tanto quanto no bloqueio central. Neste relato de caso, nosso objetivo foi relatar uma raquianestesia total, uma complicação incomum. BPL com bloqueio ciático foi planejado para um paciente do sexo masculino, 76 anos, programado para artroplastia total do joelho por causa de gonartrose. O paciente ficou inconsciente após o bloqueio do compartimento do psoas com a técnica de Chayen para BPL. A operação terminou em 145 minutos. O paciente foi internado em unidade de terapia intensiva até o segundo dia pós-operatório e recebeu alta hospitalar no quinto dia pós-cirúrgico. A principal preocupação da monitoração do paciente deve ser a presença do anestesiologista. Dessa forma, conclui-se que o contato com o paciente deve ser garantido durante esses procedimentos.

Lumbar plexus block (LPB) is a suitable method for elder patients for lower extremity surgery. Many complications could be seen during LPB, but not as many as central block. In this case report, we aimed to report a total spinal block, an unusual complication. LPB with sciatic block was planned for a male patient, 76 years old, scheduled for total knee replacement due to gonarthrosis. The patient became unconscious after psoas compartment block with Chayen technique for LPB. The operation ended at 145th minute. The patient was admitted to intensive care unit until postoperative second day and discharged to home on fifth day of surgery. Main concern of patient monitorization should be an anesthesiologist. In this manner, we conclude that contacting to the patient should be ensured during these procedures.

El bloqueo del plexo lumbar (BPL) es un método adecuado para usarlo en pacientes ancianos sometidos a cirugía de la extremidad inferior. Durante el BPL pueden observarse muchas complicaciones, pero no tantas como en el bloqueo central. En este relato de caso, nuestro objetivo fue exponer una raquianestesia total, una complicación no común. Se planificó un BPL con bloqueo ciático para un paciente del sexo masculino, de 76 años de edad, programado para artroplastia total de la rodilla debida a gonartrosis. El paciente quedó inconsciente después del bloqueo del compartimento del psoas con la técnica de Chayen para BPL. La operación terminó en 145 min. El paciente fue ingresado en la unidad de cuidados intensivos hasta el segundo día del postoperatorio y tuvo alta hospitalaria al quinto día poscirugía. La principal preocupación de la monitorización del paciente debe ser la presencia del anestesiólogo. Así se concluye que el contacto con el paciente debe estar garantizado durante esos procedimientos.

Effects of head peripheral nerve block on remifentanil consumption and postoperative pain in patients undergoing craniocerebral surgery / 实用医学杂志

Objective To investigate the effects of the head peripheral nerve block on remifentanil consumption and postoperative pain in patients undergoing craniocerebral surgery. Methods 80 patients under general anesthesia undergoing supratentorial craniocerebral surgery were randomly divided into two groups:the head peripheral nerve block combined intravenous anesthesia group (group S, 40 cases) and the simple intravenous anesthesia group (group C, 40 cases). After anesthesia induction intubation, the patients in group S received the head peripheral nerve block with 0.596% ropivacaine mesylate injection,including supraorbital nerve, supratrochlear nerve , auriculotemporal nerve , great occipital nerve and lesser occipital nerve , as well as regional nerve on the corresponding position of the bilateral head nails. Haemodynamic index of the operations was measured;drug consumption during operation and VAS pain score at 0. 5, 2, 6, 12, 24 and 48 h after surgery were recorded. Results Compared with group C, the values of SBP, DBP, HR had a significant decrease at head-nail insertion and the latter stage in group S(P<0.05). The remifentanil consumption and VAS scores had a significant decrease in group S (P < 0.05). Conclution Head peripheral nerve block before operation could enhance anesthesic analgesia, reduce the remifentanil consumption and postoperative pain in patients undergoing craniocerebral surgery.

Observation on Peripheral Nerve Block in Patients with Coronary Heart Disease after Introcoronary Stent(ICS) undergoing Lower-extremity Surgery / 浙江中医药大学学报

[Purpose]To study the changes of hemodynamic response and the states of myocardial ischemia with peripheral nerve block in patients with coronary heart disease after introcoronary stent(ICS)undergoing lower-extremity surgery in order to guide the clinical application.[Methods]Peripheral nerve block was performed on 32 patients with coronary heart disease after ICS undergoing lower-extremity surgery,the SP,DP and HR were measured before anesthesia,at the beginning of incision,30 min after the incision of surgery and after completion of operation;the states of myocardial ischemia reflected by DCG were monitored before 24h of surgery,2～5h after the incision and 48h after completion of operation.[Results]The SP,DP and HR were decreased more significantly at the beginning of incision,30 min after the incision of surgery and after completion of operation than before anesthesia(P0.05).The frequency of occurences of myocardial ischemia during and after the surgery was increased significantly(P

Correlation between Pain Scale and Infrared Thermography in Unilateral Pain Patients after Nerve Block / 대한마취과학회지

BACKGROUND: Being a subjective symptom, an objective evaluation of pain and severity is important in the diagnosis and detection of treatment outcome. This study examined the usefulness of infrared thermography for the objective evaluation of pain, irrespective of the original disease. METHODS: Patients with unilateral pain who underwent nerve block were randomly selected. Infrared thermography was performed and subjective pain site and severity were assessed before and after nerve block. RESULTS: The temperature difference between the pain site and the contralateral site was significantly correlated with subjective pain severity before and after block (P < 0.01). Improvements in VAS were correlated with temperature difference decrement between both sides after nerve block (P <0.05). CONCLUSIONS: Infrared thermal imaging can demonstrate subjective pain objectively. Thermal differences between the pain sites and the contralateral sites are an indicator of pain scale in a patient with ipsilateral pain. Moreover the thermal difference may be a useful means of determining outcome.