Ultrasound-Guided WALANT Technique in Carpal Tunnel Decompression Surgery* / Técnica WALANT guiada por ultrassom na cirurgia de descompressão do túnel do carpo

Abstract Carpal tunnel syndrome (CTS) is the most common compressive neuropathy in the human body. Its symptoms result from compression of the median nerve in the carpus. The treatment can be conservative, with medications and/or infiltrations that alleviate the symptoms, or surgical, which is more effective, with decompression of the median nerve by surgical section of the flexor retinaculum of the carpus. The anesthetic technique varies according to the anesthesia method: sedation, venous locoregional anesthesia and, more recently, wide-awake local anesthesia no tourniquet (WALANT), which can be performed by the surgeons themselves. The WALANT technique uses local anesthesia with a vasoconstrictor, and does not require the use of a tourniquet on the upper limb nor sedation. The median nerve block in ultrasound-guided WALANT provides better accuracy to the technique, with greater patient safety; in the present article, its use in the performance of carpal tunnel decompression is described, and the literature is reviewed.

Resumo A síndrome do túnel do carpo (STC) é a neuropatía compressiva mais comum do corpo humano. Seus sintomas decorrem da compressão do nervo mediano no carpo. O tratamento pode ser incruento, com medicações e/ou infiltrações que amenizam os sintomas, ou cruento, mais eficaz, com a descompressão do nervo mediano pela seção cirúrgicadoretináculodos flexores do carpo. A técnica anestésica varia de acordo com o serviço de anestesia: sedação, anestesia locorregional venosa e, mais recentemente, a anestesia local com o paciente acordado e sem torniquete (wide-awake local anesthesia no tourniquet, WALANT), que pode ser realizada pelo próprio cirurgião. Por utilizar anestesia local com vasoconstritor, essa técnica dispensa o uso de torniquete no membro superior e a necessidade de sedação. O bloqueio do nervo mediano na WALANT guiada por ultrassonografiaconfere melhor precisão àtécnica,e mais segurança ao paciente, e, neste artigo seu uso na realização da descompressão do túnel do carpo é descrito, e a literatura, revisada.

Microvascular perfusion characteristics of breast cancer by contrast-enhanced ultrasound and its comparison with pathology / 中国医师进修杂志

Objective:To study the characteristics of tumor microvascular perfusion by contrast-enhanced ultrasound (CEUS) in patients with breast cancer, and to analyze its relationship with pathology.Methods:The clinical data of 180 breast cancer patients admitted to Tangshan People′s Hospital from February 2019 to March 2021 were retrospectively analyzed. They were examined by contrast-enhanced ultrasound before surgery, and the specimens were sent for pathological biopsy after surgery. The characteristics of tumor microvascular perfusion under CEUS were observed, and the correlation between the characteristics and pathological classification and grade were analyzed.Results:The results of the CEUS showed that the contrast agentrapid infusion was 47.78%(86/180), slowly filled was 60.00%(108/180), the mass showed hyperenhancement when the contrast agent reached its peak was 42.78%(77/180), the contrast agent slowly withdrew was 42.78% (77/180), and the contrast agent retention in clearance was 65.56% (118/180). Pathological biopsy revealed that among 180 patients, 16 patients (8.89%) were non-invasive carcinoma, 41 patients (22.78%) were invasive lobular carcinoma, 88 patients (48.89%) were invasive ductal carcinoma, 10 patients (5.56%) were mucinous adenocarcinoma, 11 patients (6.11%) were medullary carcinoma, 8 patients (4.44%) were squamous carcinoma, 6 patients (3.33%) were hard carcinoma (3.33%). There was no correlation between tumor microvascular perfusion characteristics and pathological classification under CEUS ( P>0.05). Pathological biopsy showed that 95 patients (52.78%) were grade Ⅰ, 49 patients (27.22%) were gradeⅡand 36 patients (20.00%) were grad Ⅲ. There was a certain correlation between tumor microvascular perfusion characteristics and pathological grade under CEUS ( P<0.05). Conclusions:There is a certain relationship between tumor microvascular perfusion characteristics detected by CEUS and pathological grading in patients with breast cancer. Analysis of the microvascular perfusion characteristics can provide an important basis for pathological grading.

Clinical application of water-filling with "four-eyes" sign under the guidance of ultrasound in nasal-jejunum intubation for critical patients / 中国实用护理杂志

Objective:To evaluate the clinical application of water-filling with "four-eyes" sign under the guidance of ultrasound in nasal-jejunum intubation for critical patients.Methods:This study was a randomized controlled trial. Eighty patients who needed indwelling nasobenteric tube were selected from June 2021 to April 2022 in the Department of Critical Care Medicine, Xiangya Hospital, Central South University. They were divided into control group ( n=40) and experimental group ( n=40) by systemic randomization. For the patients in the experimental group, the intubation was performed by water-filling with "four-eyes" sign under the guidance of ultrasound. For the control group, the traditional method was applicated under the guidance of ultrasound. Using abdominal X-ray as the gold standard of successful pylorus posterior catheterization, the result of catheterization, time of operation, efficiency of positioning in the two groups were analyzed and compared. Results:In the experimental group, 38 cases were successfully intubated, 2 were failed; in the control group, 27 cases were successfully intubated, 13 were failed, and all the failed cases in the control group were then successfully intubated again by using method of the experimental group. The success rate of tube placement in the experimental group was 95.0% (38/40), which was higher than 67.5% (27/40) in the control group ( χ2 = 9.93, P<0.05). The average time of operation in the experimental group was (45.2 ± 14.2) min, which was significantly lower than (70.2 ± 17.7) min in the control group, the difference was significantly different ( t=-5.51, P<0.05). The specificity, sensitivity, positive predictive value, negative predictive value and diagnostic rate of nasal-jejunum intubation positioning in the experimental group were 100.0% respectively, higher than 38.4%, 77.7%, 72.4%, 45.4%, 65.0% in the control group; the false positive rate, false negative rate in the experimental group were both 0, lower than 22.2%, 61.5% in the control group, with statistically significant differences( χ2 values were 4.69- 16.97, all P<0.05). Conclusions:Water-filling with "four-eyes" sign under the guidance of ultrasound in nasal-jejunum intubation was a new method which can shorten the operation time and increase the success rate for intubation. It has relatively high positioning accuracy and possess valuable clinical application.

Ultrassonografia intravascular para guiar a intervenção coronária percutânea: resultados do registro nacional português / Intravascular ultrasound in percutaneous coronary intervention guidance: results from Portuguese registry

Introdução: As diretrizes atuais recomendam o uso da ultrassonografia intravascular de coronárias como ferramenta adjuvante em situações difíceis. Objetivo: Caracterizar a utilização da ultrassonografia intravascular em Portugal e comparar os desfechos após intervenção coronária percutânea no tronco da coronária esquerda, guiada ou não por ultrassonografia intravascular. Métodos: Estudo observacional retrospectivo multicêntrico, que analisou pacientes submetidos à intervenção coronária percutânea entre janeiro de 2012 e dezembro de 2018, incluídos no Portuguese Registry on Interventional Cardiology da Sociedade Portuguesa de Cardiologia. Valor de p bicaudal <0,05 foi considerado estatisticamente significativo. Resultados: Este estudo demonstrou variação significativa na utilização da ultrassonografia intravascular em Portugal (valor de p qui-quadrado para tendência <0,001). O ano com maior utilização foi 2016 (2,4%). Houve aumento progressivo, nos últimos 7 anos, na utilização da ultrassonografia intravascular na intervenção coronária percutânea do tronco da coronária esquerda (valor de p qui-quadrado para tendência <0,001), com importantes diferenças regionais. A população submetida à intervenção coronária percutânea do tronco da coronária esquerda guiada por ultrassonografia intravascular era mais jovem, mas tinha maior prevalência de fatores de risco cardiovascular, disfunção sistólica ventricular e lesões coronárias complexas. Além disso, esse grupo de pacientes teve menor prevalência do desfecho primário intra-hospitalar (1,4% versus 3,9%; p=0,024). Porém, após análise multivariada ajustada para fatores de confusão, este estudo não demonstrou impacto significativo da utilização da ultrassonografia intravascular no desfecho intra-hospitalar. Conclusão: A utilização da ultrassonografia intravascular na intervenção coronária percutânea do tronco da coronária esquerda vem aumentando lentamente nos últimos 7 anos em Portugal. Neste estudo, a utilização desse método não teve impacto estatístico nos desfechos intra-hospitalares.

Background: Current guidelines recommend the use of coronary intravascular ultrasound as an adjunctive tool in challenging situations. Objective: To characterize the use of intravascular ultrasound in Portugal and compare outcomes after left main percutaneous coronary intervention, with or without intravascular ultrasound. Methods: A retrospective multicentric observational study analyzed patients who underwent percutaneous coronary intervention between January 2012 and December 2018 and were included in the Portuguese Registry on Interventional Cardiology of the Sociedade Portuguesa de Cardiologia. A two-sided p-value<0.05 was considered statistically significant. Results: This study revealed significant variation of intravascular ultrasound usage in Portugal over time (p-value Chi-squared for trend <0.001). The year with maximum use was 2016 (2.4%). Regarding left main percutaneous coronary intervention, there was a progressive increase in use of intravascular ultrasound (p-value Chi-squared for trend<0.001) in the last 7 years, with important regional differences. The population submitted to left main percutaneous coronary intervention with intravascular ultrasound was younger, but had a higher prevalence of some cardiovascular risk factors, ventricular systolic dysfunction, and complex coronary lesions. Moreover, this group of patients had lower prevalence of intrahospital primary endpoint (1.4% versus 3.9%; p=0.024). However, after multivariate analysis adjusted to confounding factors, this study did not demonstrate a significant impact of intravascular ultrasound on intrahospital endpoint. Conclusion: The overall use of intravascular ultrasound in left main percutaneous coronary intervention has been slowly increasing in the last seven years, in Portugal. In this study, the use of this method had no statistical impact in intrahospital endpoints.

New fields and progress of ultrasound imaging used in diagnosis and therapy / 中国医师杂志

With the continuous development of ultrasound equipment and imaging technology, the application of ultrasound imaging technology is more and more wide, and gradually covers the whole process of disease diagnosis and treatment. Focusing on the highlights of ultrasound development, this article briefly introduces the new fields and new progress of clinical application of ultrasound from interventional ultrasound, point-of-care ultrasound, and musculoskeletal ultrasound.

Practice and progress of interventional ultrasound in the diagnosis and treatment of acute abdomen / 国际外科学杂志

Acute abdominal pain is one of the most frequent complaints of patients presenting to the emergency department. Timely diagnosis and correct treatment affect the prognosis of patients. Traditional diagnosis mostly depends on physical examination and radiology. In terms of treatment, some patients need exploratory laparotomy. In recent years, with the development of interventional ultrasound, new techniques such as contrast-enhanced ultrasound, ultrasound-guided biopsy, drainage have been gradually applied to the diagnosis and treatment of surgical acute abdomen, especially the surgeon-performed interventional ultrasound, which has effectively improved the diagnostic efficiency and broadened the treatment choice. In this article, we aim to review and evaluate the application and progress of interventional ultrasound in the diagnosis and treatment of surgical acute abdomen.

Clinical efficacy of ultrasound-guided adductor block with chloroprocaine combined with fentanyl for early rehabilitation training after total knee arthroplasty / 中国基层医药

Objective:To investigate the effects of ultrasound-guided adductor block with chloroprocaine combined with fentanyl on analgesia and early rehabilitation after total knee arthroplasty.Methods:Eighty-eight patients who underwent total knee arthroplasty in Wenzhou Hospital of Integrated Traditional Chinese and Western Medicine between June 2018 and June 2020 were included in this study. They were randomly divided into control and study groups, with 44 patients per group. The control group was subjected to distal adductor block with ropivacaine. The study group received distal adductor block with ropivacaine combined with fentanyl. Before and after distal adductor block, resting pain response was evaluated using the Visual Analogue Scale. The success rate, onset time of block, and duration of block effect were recorded. The quadriceps femoris muscle strength, knee joint range of motion, and Hospital for Special Surgery knee score before and after block were measured. The time spent in stand-to-walk test and 10-meter walking test, and incidence of falls during rehabilitation training as well as drug-related adverse reactions were recorded.Results:There were no significant differences in resting-state and task-state Visual Analogue Scale scores post-block between the two groups ( t = 0.43, 0.46, P = 0.689, 0.644). The onset time of block and duration of block effect in the study group were (5.02 ± 0.94) minutes and (2.64 ± 0.39) minutes, respectively, which were significantly shorter than those in the control group [(7.49 ± 1.12) minutes, (7.08 ± 0.92) minutes, t = 5.73, 13.02, both P < 0.001]. There was no significant difference in block success rate between study and control groups (100.0% vs. 100.0%, χ 2 = 0.00, P = 1.000). The quadriceps femoris muscle strength, knee range of motion, and Hospital for Special Surgery knee score in the study group were (4.68 ± 0.44), (112.57 ± 9.96) o and (70.56 ± 6.84) points, which were superior to those in the control group [(4.19 ± 0.42), (101.30 ± 9.67) o,(62.47 ± 6.16) points, t = 3.42, 4.64, 6.58, all P < 0.001). The time spent in stand-to-walk test and 10-meter walking test were (7.95 ± 1.48) minutes and (4.67 ± 0.63) minutes, respectively, which were significantly shorter than those in the control group [(13.41 ± 2.05) minutes, (6.24 ± 0.77) minutes, t = 8.23, 6.74, both P < 0.001). The incidence of falls in the study group was significantly lower than that in the control group (11.3% vs. 29.5%, χ 2 = 4.47, P = 0.034). There was no significant difference in total incidence of drug-related adverse reactions between the two groups (9.1% vs. 13.6%, χ 2 = 0.45, P = 0.502). Conclusion:Distal adductor block with cloprocaine combined with fentanyl meets the requirement of short-term intensive analgesia after total knee arthroplasty, and achieves sufficient analgesia, maximum retention of motor function, rapid onset, and repaid recovery.

Echocardiography-guided transcatheter closure of atrial septal defects for three pregnant women / 中华围产医学杂志

Objective:To investigate the feasibility of echocardiography-guided transcatheter closure of atrial septal defect (ASD) during pregnancy and summarize the multidisciplinary treatment experience for such women.Methods:A retrospective analysis was performed on three women receiving echocardiography-guided secondum ASD closure during pregnancy in Guangdong Provincial People's Hospital from January 2018 to October 2021. Perioperative and perinatal multidisciplinary treatment and prognosis were described.Results:All three patients underwent cardiac ultrasonography due to abnormal electrocardiogram during routine prenatal examination and were diagnosed with secondum ASD. Progressive cardiac dysfunction was found during close follow-ups and all cases met the criteria for ASD closure during pregnancy after multidisciplinary evaluation. Echocardiography-guided ASD closure was successfully performed in all patients. Pulmonary arterial pressure was significantly reduced and the cardiac function was stable after the operation. All patients delivered vaginally at term without complications such as miscarriage, premature birth, postpartum hemorrhage or fetal growth restriction and had their cardiac function recovered during postpartum follow-up.Conclusions:Echocardiography-guided ASD closure during pregnancy is technically feasible. Good maternal and fetal outcomes can be obtained through multidisciplinary and close monitoring and treatment during perioperative and perinatal periods.

Advances in ultrasonography for the diagnosis and postoperative evaluation of abdominal aortic aneurysm in the elderly / 中华老年医学杂志

The incidence and mortality of abdominal aortic aneurysm in the elderly are high.The poor prognosis of ruptured abdominal aortic aneurysm is in sharp contrast to the good survival after planned surgery.Endovascular repair is the first choice and maybe the only treatment for elderly patients with abdominal aortic aneurysm.Ultrasound is the preferred imaging method for screening and monitoring abdominal aortic aneurysm, with high accuracy and repeatability, and is an effective means for accurate diagnosis and follow-up monitoring in elderly patients with abdominal aortic aneurysm.This paper reviews research progress on ultrasonic diagnosis and postoperative evaluation of abdominal aortic aneurysm in the elderly, and discusses the important application value and prospect of conventional ultrasound combined with new ultrasound technology in this field.

Ultrasound-guided percutaneous renal biopsy at a university hospital: retrospective analysis of success and complication rates / Biópsia renal percutânea guiada por ultrassonografia: análise retrospectiva de sucesso e complicações em um hospital universitário

Abstract Objective: To evaluate the success and complication rates of ultrasound-guided renal biopsy at a tertiary care hospital. Materials and Methods: This was a retrospective analysis of 97 ultrasound-guided renal biopsies, all performed by the same radiologist, between 1 March, 2017 and 31 October, 2019. Results: Of the 97 biopsies evaluated, 87 had a definitive pathological diagnosis. In five cases (5.4%), the biopsy results were inconclusive and a second procedure was required. In seven procedures (7.6%), there were complications, all of which were properly resolved. Conclusion: Ultrasound-guided renal biopsy has proven to be a safe, effective method for the diagnosis of nephropathies, with high success rates.

Resumo Objetivo: Avaliar taxas de sucesso e de complicações de biópsias renais guiadas por ultrassonografia em um hospital terciário. Materiais e Métodos: Análise retrospectiva de 97 biópsias renais realizadas entre 1º de março de 2017 e 31 de outubro de 2019, guiadas por ultrassonografia e executadas por um único médico radiologista. Resultados: Oitenta e sete biópsias apresentaram diagnóstico anatomopatológico definitivo. Cinco biópsias foram inconclusivas (5,4%) e precisaram de um segundo procedimento. Houve complicações em sete procedimentos (7,6%), todas devidamente solucionadas. Conclusão: A biópsia renal guiada por ultrassonografia demonstrou ser um método efetivo e seguro para o diagnóstico de nefropatias, com elevada taxa de sucesso em sua execução.

Intervenção Coronariana Percutânea em Lesões não Protegidas de Tronco / Percutaneous Coronary Intervention in Unprotected Left Main Coronary Artery Lesions

Resumo Fundamento O advento dos stents farmacológicos permitiu que a intervenção coronariana percutânea apresentasse resultados seguros nas lesões de tronco da artéria coronária esquerda. Objetivos Analisar os resultados do tratamento percutâneo da lesão não protegida de tronco da artéria coronária com a utilização de ultrassom intravascular. Métodos Estudo de série de casos consecutivos realizado no período de janeiro de 2010 a dezembro de 2018. Coletaram-se dados clínicos dos pacientes, assim como escores prognósticos e dados da lesão coronariana. Considerou-se de sucesso a lesão residual menor que 50% à angiografia e a área mínima da luz maior que 6 mm 2 ao ultrassom intravascular. O nível de significância adotado foi de 5%. Resultados Analisaram-se 107 casos. A lesão multiarterial foi predominante, sendo com maior frequência (39,25%) encontradas lesões em três vasos além do tronco coronariano. O escore SYNTAX apresentou média de 46,80 (DP: 22,95), e 70 (65,42%) pacientes tiveram escore SYNTAX acima de 32 pontos. Considerou-se sucesso angiográfico da intervenção percutânea em 106 (99,06%) pacientes. A taxa geral de evento maior cardíaco e cerebrovascular no desfecho hospitalar foi 6,54%, sendo semelhante nos pacientes com escore SYNTAX ≤ 32 (8,10%) e ≥ 33 (5,71%; p = 0,68) . Conclusões A intervenção percutânea em casos de lesão não protegida de tronco coronariano foi realizada com segurança e apresentou ótimos resultados. Atingiu-se alto sucesso angiográfico de tratamento guiado pelo ultrassom intravascular. A taxa de eventos cardíacos e cerebrovasculares maiores foi semelhante entre os pacientes de menor e de maior risco.

Abstract Background The advent of drug-eluting stents allowed the percutaneous coronary intervention to present safe results in lesions in the left main coronary artery. Objectives To analyze the results of the percutaneous treatment of unprotected left main coronary artery lesion with the use of intravascular ultrasound. Methods Study of consecutive case series carried out from January 2010 to December 2018. Clinical data were collected from patients as well as prognostic scores and data on coronary lesion. Low-grade residual lesion (less than 50%) on angiography and minimum luminal area greater than 6 mm2on intravascular ultrasound were considered successful. The adopted significance level was 5%. Results 107 cases were analyzed. The multivessel lesion was predominant, with most (39.25%) of the lesions being found in three vessels in addition to the left main coronary artery. The SYNTAX score had a mean of 46.80 (SD: 22.95), and 70 (65.42%) patients had a SYNTAX score above 32 points. Angiographic success of percutaneous intervention was considered in 106 (99.06%) patients. The overall rate of major cardiac and cerebrovascular events in the hospital outcome was 6.54%, being similar in patients with SYNTAX score ≤ 32 (8.10%) and ≥ 33 (5.71%; p = 0.68). Conclusions Percutaneous intervention in cases of unprotected left main coronary artery lesion was safely performed and presented excellent results. Considerable angiographic success of treatment guided by intravascular ultrasound was achieved. The rate of major cardiac and cerebrovascular events was similar between patients at low and high risks.

Proposal for computer-aided diagnosis based on ultrasound images of the kidney: is it possible to compare shades of gray among such images? / Proposição de um diagnóstico auxiliado por computador de imagem renal ultrassonográfica: é possível comparar tons de cinza das imagens ultrassonográficas renais?

Abstract Objective: To compare ultrasound images of the kidney obtained, randomly or in a controlled manner (standardizing the physical aspects of the ultrasound system), by various professionals and with different devices. Materials and Methods: We evaluated a total of 919 images of kidneys, obtained by five professionals using two types of ultrasound systems, in 24 patients. The images were categorized into four types, by how they were acquired and processed. We compared the gray-scale median and different gray-scale ranges representative of virtual histological tissues. Results: There were statistically significant differences among the five professionals, regardless of the type of ultrasound system employed, in terms of the gray-scale medians for the images obtained (p < 2.2e-16). Analyzing the four categories of images-a totally random image (without any standardization); a standardized image (with fixed values for gain, time gain control, and dynamic range); a normalized version of the random image; and a normalized version of the standardized image-we determined that the random image, even after normalization, differed quite significantly among the professionals (p = 0.006098). The analysis of the normalized version of the standardized image did not differ significantly among the professionals (p = 0.7319). Conclusion: Our findings indicate that a gray-scale analysis of ultrasound images of the kidney performs better when the image acquisition process is standardized and the images undergo a process of normalization.

Resumo Objetivo: Comparar imagens renais ultrassonográficas obtidas de maneira aleatória e controlada (padronizando fatores físicos do aparelho de ultrassom) por diferentes profissionais e aparelhos. Materiais e Métodos: Foram obtidos quatro tipos de imagens, de acordo com sua aquisição e processamento por cinco profissionais e dois tipos de aparelhos de ultrassonografia, em 24 pacientes, totalizando 919 imagens. Comparamos a mediana de escala de cinza e diferentes intervalos de tons de cinza representantes de tecidos histológicos virtuais. Resultados: As medianas de escala de cinza de imagens renais obtidas por dois tipos de aparelhos foram estatisticamente diferentes (p < 2.2e-16). Analisando os quatro tipos de imagens, partindo de uma totalmente aleatória (sem qualquer padronização), uma padronizada (fixado o ganho, time gain control e dynamic range), e essas duas passando por um processo de normatização, obteve-se que a imagem aleatória é totalmente diversa entre os profissionais (p = 0,006098), mesmo passando pelo processo de normatização. A imagem padronizada, após passar pelo processo de normatização, apresentou resultados equivalentes, não possuindo diferença estatística (p = 0,7319). Conclusão: Constatou-se que na análise de tons de cinza deve-se usar um mesmo tipo de máquina e uma imagem em que sejam padronizados aspectos físicos, passando por um processo de normatização/padronização.

Mastite puerperal complicada em paciente com implante de silicone: Um relato de caso / Puerperal mastitis complicated in patient with silicone implantation: A case report

A mastite é uma patologia relativamente frequente na mulher que amamenta. Surge maioritariamente nas primeiras seis semanas após o parto (prevalência entre 75-95% antes do bebé completar os três meses de vida), podendo, contudo, ocorrer ao longo de todo o período da amamentação. Apresenta-se clinicamente com mastalgia, eritema e edema mamário, linfonodomegalia axilar, febre, calafrios, mal-estar e prostração. Entretanto, o quadro clínico completo pode não estar presente em todos os casos. A técnica incorreta de amamentação provoca as microlesões mamáriasque são fatores associados à mastite, inicialmente, e esta quando não recebe tratamento adequado pode evoluirpara os abscessos mamários, que são caracterizados clinicamente por nodulação palpável ou não, flutuante, parcialmente circunscrita, geralmente no quadrante superior lateral da mama afetada. O microrganismo mais envolvido é o Staphylococcus aureus. O diagnóstico diferencial envolve principalmente outras causas não infecciosas de mastite, por exemplo a granulomatosa com reação a corpo estranho (piercing, implantes de silicone) e também malignidade. A ultrassonografia é um método bastante útil na investigação inicial daqueles quadros com suspeita de desenvolvimento de tal complicação e possibilita de maneira segura o tratamento minimamente invasivo e a obtenção de amostra para analise laboratorial. Isto permite a escolha de antibioticoterapia direcionada para os microorganismos causadores.

Mastitis is a relatively common condition in breastfeeding women. It appears mostly in the first six weeks after delivery (prevalence between 75-95% before the baby is three months old), however, it can occur throughout the entire period of breastfeeding. It may present clinically with mastalgia, erythema and breast edema, axillary lymph node enlargement, fever, chills, malaise and prostration. However, the complete clinical picture may not be present in all cases. The incorrect breastfeeding technique causes breast microlesions which are factors associated with mastitis, initially, and when it does not receive adequate treatment it can evolve for breast abscesses, which are characterized clinically by palpable or not, floating, partially circumscribed nodulation, usually in the upper lateral quadrant of the affected breast. The most involved microorganism is Staphylococcus aureus. The differential diagnosis mainly involves other non-infectious causes of mastitis, for example granulomatous with a foreign body reaction (piercing, silicone implants) and also malignancy. Ultrasonography is a very useful method in the initial investigation of those conditions suspected of developing such a complication, and it safely allows minimally invasive treatment and obtaining a sample for laboratory analysis. This allows the choice of antibiotic therapy directed at the causative microorganisms.

Efficacy of endoscopic ultrasound-guided fine needle aspiration in the diagnosis of metastases to the pancreas: an analysis of 11 cases / 中华消化内镜杂志

To evaluate the efficacy of endoscopic ultrasound-guided fine needle aspiration (EUS-FNA) for patients with metastases to the pancreas.Data on patients with pancreatic lesions who underwent EUS-FNA and confirmed as having metastases to the pancreas at the Endoscopy Center of Zhongshan Hospital, Fudan University from January 2015 to November 2020 were retrospectively analyzed.Characteristics of patients, EUS performance, pathological results, and follow-up were reviewed and analyzed. A total of 11 patients were diagnosed of metastasis to pancreas by EUS-FNA.The primary tumor mainly came from kidney (4/11) and lung (4/11), and the rest from colon (1/11), breast (1/11) and bladder (1/11), respectively. EUS performance of metastases to the pancreas mostly presented homogeneous hypoecho (10/11)with unclear margin (6/11). Enlarged lymphnodes were noticed in nearly half of the patients (5/11). The time span from detection of primary tumor to metastases ranged from 6 days to 27 years. EUS-FNA is effective in the diagnosis of metastases to the pancreas.

Clinical analysis of ultrasound intervention combined with antibiotics in treatment of Klebsiella pneumoniae liver abscess / 中国医师杂志

Objective:To explore the clinical features of ultrasound intervention combined with antibiotics in the treatment of Klebsiella pneumoniae liver abscess, and to provide a reference for clinical treatment.Methods:The clinical data of 100 patients with Klebsiella pneumoniae liver abscess treated in Beijing Friendship Hospital Affiliated to Capital Medical University from January 2015 to November 2020 were analyzed retrospectively. The patient's gender, age, abscess diameter, number of abscesses, abscess separation, air cavity formation and length of hospital stay were recorded. The blood white blood cell (WBC), neutrophil percentage (GR%), platelet count (PLT), C-reactive protein (CRP), procalcitonin (PCT), alanine aminotransferase (ALT), aspartate aminotransferase (AST), total bilirubin (TBIL), prothrombin activity (PTA) before and after treatment were analyzed.Results:After treatment, the infection indexes (WBC, GR%, PLT, CRP, PCT) were significantly decreased, and the liver function indexes (ALT, AST, TBIL, PTA) were significantly improved ( P<0.05). Patients were divided into two groups according to diabetes. The results showed that the diabetic group was prone to air cavity formation (χ 2=8.632, P=0.003), and there was no significant difference between other clinical indicators among the groups ( P>0.05). Diabetes mellitus group was divided into two groups based on hemoglobin A1c (HbA1c) 9%. The results showed that the HbA1c>9% group was younger ( t=2.861, P=0.006), more male (χ 2=6.81, P=0.013), and more prone to form multiple abscesses (χ 2=10.304, P=0.001), while the other clinical indicators were not statistically significant. Conclusions:Ultrasound intervention combined with antibiotics can effectively treat liver abscess. Patients with diabetes are prone to air cavity formation, which should be paid more attention in clinic.

Ultrasound combined with X-ray-guided precise implantation of totally implantable access ports in the chest wall / 中国基层医药

Objective:To investigate the success rate, operation time and complications of ultrasound combined with X-ray-guided precise implantation of totally implantable access port (TIAP) in the chest wall.Methods:A total of 623 patients who underwent implantation of totally implantable venous access ports in the chest wall in Meizhou People's Hospital, China between January 2015 and August 2018 were included in this study. In group A ( n = 320), jugular or subclavian access ports were precisely implanted in the chest wall under the guidance of ultrasound combined with X-ray. During the surgery, color Doppler ultrasound was used to guide the puncture and a C-arm machine was used to locate the position of catheter tip. In group B ( n = 303), venous access ports were implanted using the conventional method. Subclavian vein puncture was performed using anatomic landmarks and the depth of catheterization was estimated by experience. The success rate of the first implantation, operation time, and complications (pneumothorax, hemothorax, catheter displacement, poor position of catheter tip, skin infection, and thrombosis) were compared between the two groups. Results:There were no statistical differences in baseline data between the two groups ( P > 0.05). The success rate of the first implantation in the group A was significantly higher than that in the group B [100% (320/320) vs. 93.06% (282/303), χ2 = 22.95, P < 0.01]. The operation time in the group A was significantly shorter than that in the group B [(26.48 ± 5.49) minutes vs. (35.51 ± 14.37) minutes, t = -10.25, P < 0.01]. In group A, 2 patients developed pneumothorax and healed after conservative treatment, 6 patients had thrombosis, and the incidence of complications was 2.5% (8/320). In group B, complications occurred in 67 patients, including pneumothorax in 9 patients, poor catheter tip position in 17 patients, thrombosis in 36 patients, and skin infection in 1 patient, and the incidence of complications was 22.11% (67/303). There was significant difference in the incidence of complications between the two groups ( χ2 = 56.53, P < 0.01). In group B, 6 out of 9 patients developing pneumothorax were healed after closed thoracic drainage, and 4 patients underwent a secondary surgery because of catheter displacement into the internal jugular vein. Conclusion:Precise implantation of venous access ports in the chest wall guided by ultrasound combined with X-ray has the advantages including 100% success rate of first precise implantation, few complications, short operation time, high comfort, safety and efficacy.

Endoscopic ultrasound features of distal biliary stricture / 临床肝胆病杂志

Objective To investigate the endoscopic ultrasound (EUS) features of distal biliary stricture (DBS), and to provide a clinical basis for the evaluation of DBS by EUS. Methods Related clinical data were collected from 175 patients with DBS who underwent EUS examination in The First Affiliated Hospital of Anhui Medical University from April 2016 to March 2020 to analyze their clinical manifestation, laboratory examination results, imaging findings, and EUS findings, and the patients were followed up to summarize the EUS features of DBS. The chi-square test was used for comparison of categorical data between groups, and the t -test was used for comparison of continuous data between groups. Results Among the 175 patients with DBS, 85(48.57%) had benign DBS and 90(51.43%) had malignant DBS. Compared with the patients with benign DBS, the patients with malignant DBS had a significantly longer length of stricture on EUS (14.1±3.0 mm vs 7.9±3.0 mm, t =13.358, P < 0.001) and significantly higher incidence rates of the characteristic changes on EUS such as hypoechoic space-occupying lesions in lumen (57.8% vs 34.1%, χ 2 =9.843, P =0.002), peripheral lymph node enlargement (26.7% vs 12.9%, χ 2 =5.147, P =0.023), and pancreatic duct dilatation (51.1% vs 28.2%, χ 2 =9.532, P =0.002). EUS combined with magnetic resonance cholangiopancreatography had a sensitivity of 70.6% in the diagnosis of benign DBS and a sensitivity of 92.2% in the diagnosis of malignant DBS. Conclusion The characteristic EUS features of DBS, such as long length of stricture, hypoechoic lesion, peripheral lymph node enlargement, and pancreatic duct dilatation, may help with the differential diagnosis of DBS in clinical practice.

Ultrassonografia Intervencionista para implantação e monitoramento de cateter venoso central de inserção periférica: scoping review / Ultrasonido intervencionista para implantación y monitorización de catéter venoso central insertado periféricamente: revisión del alcance / Interventional ultrasound for implantation and monitoring of peripherally inserted central venous catheter: scoping review

RESUMO Objetivo discutir as evidências disponíveis sobre uso de ultrassonografia na implantação/manutenção de cateter venoso central de inserção periférica no neonato crítico. Método scoping review, baseada nas recomendações de especialistas do Joanna Briggs Institute. Para identificar a questão de investigação foi seguida a versão PCC - Population, Concept and Context. As buscas foram realizadas entre janeiro e março de 2020, em três bases dados e no Google Scholar. Resultados das 354 publicações encontradas resultou uma amostra de 15 artigos, publicados em diversos países, entre 2016 e 2020, em inglês e português. A maioria evidenciava uso da ultrasound point of care (POCUS) para escolha do sítio venoso ou localização da ponta do cateter. Conclusão são necessários mais estudos, investigando a efetividade da POCUS na inserção/manutenção de cateter epicutâneo em neonatos críticos, para basear sua adoção como padrão ouro nesta clientela. O manejo por enfermeiros ainda é incipiente.

RESUMEN Objetivo discutir la evidencia disponible sobre el uso de el ultrasonido en la inserción y mantenimiento de catéteres venosos centrales de inserción periférica en neonatos críticos. Método esta revisión de alcance se basó en recomendaciones de expertos del Instituto Joanna Briggs. Se utilizó el enfoque de población, concepto y contexto (PCC) para identificar la pregunta de investigación. El estudio se realizó entre enero y marzo de 2020 en tres bases de datos y Google Scholar. Resultados en las 354 publicaciones encontradas se obtuvo una muestra de 15 artículos publicados en varios países entre 2016 y 2020, en inglés y portugués. La mayoría mostró que se usaba el punto de atención de ultrasonido (POCUS) para elegir el sitio venoso o ubicar la punta del catéter. Conclusión se necesitan más estudios para investigar la efectividad de POCUS en la inserción y mantenimiento de catéteres epicutáneos en neonatos críticos, para respaldar su adopción como el estándar de oro en esta clientela. El manejo por parte de enfermeras es aún incipiente.

ABSTRACT Objective to discuss the available evidence on the use of ultrasound in insertion and maintenance of peripherally inserted central venous catheters in critical neonates. Method this scoping review was based on recommendations by experts from the Joanna Briggs Institute. The population, concept and context (PCC) approach was used to identify the research question. The study was carried out between January and March 2020 in three databases and Google Scholar. Results a sample of 15 articles published in several countries between 2016 and 2020, in English and Portuguese, was obtained in the 354 publications found. Most showed ultrasound point of care (POCUS) being used to choose the venous site or locate the catheter tip. Conclusion further studies are needed to investigate the effectiveness of POCUS in insertion and maintenance of epicutaneous catheters in critical neonates, to support its adoption as the gold standard in this clientele. Handling by nurses is still incipient.