• 文章类型: Case Reports
    背景:在皮肤/性手术或创伤期间,异物在体内的保留是经常需要手术切除异物的事故和急诊科就诊的原因之一。然而,在某些情况下,这种异物的发现是在多年后发生的,从神经社会学的角度来看,患者略有受损。
    方法:一名76岁男性因阴囊体积增加而接受门诊泌尿外科检查。在超声波检查中,检测到来自固体物体的声学干扰,为此需要计算机断层扫描。计算机断层扫描显示会阴中存在细长的金属体。然后安排在手术室中去除异物。识别出位于脓肿异物肉芽肿内的10厘米长的不锈钢钉,并通过阴囊通道去除。四天后,由于皮瓣的最小坏死,进行了新的手术厕所。然后在接下来的一周中,患者在手术室中进行了另外三种敷料。通过次要意图进行愈合,直到获得手术伤口的完美愈合。
    结论:在感染的情况下从会阴去除异物可能具有挑战性。仔细的注意和术后的敷料对于病例的成功至关重要。
    BACKGROUND: The retention of foreign bodies inside the body during ludic/sexual procedures or for traumatism represents one of the causes of visits to accident and emergency departments that often requires surgical removal of the foreign body. However, there are cases where the discovery of such foreign bodies takes place after many years, as in patients that are slightly compromised from a neuro-sociological point of view.
    METHODS: A 76-year-old male presented to an outpatient urological examination due to an increase in scrotal volume. At the ultrasound check, an acoustic interference from a solid object was detected, for which computed tomography was requested. The computed tomography scan revealed the presence of an elongated metal body in the perineum. The removal of the foreign body in the operating theatre was then scheduled. A 10 cm long stainless-steel nail located within an abscessed foreign body granuloma was identified and removed via a scrotal access. Four days later, a new surgical toilet was performed due to minimal necrosis of the skin flaps. The patient then performed three more dressings in the operating theatre during the following week. Healing took place by secondary intention until a perfect healing of the surgical wound was obtained.
    CONCLUSIONS: Removal of foreign bodies from the perineum in case of infection can be challenging. Careful attention and postoperative dressings are crucial for the success of the case.
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  • 文章类型: Case Reports
    节段性坏死性肉芽肿性神经炎(SNGN)是麻风病的一种罕见并发症,涉及周围神经。在纯神经炎性麻风病的情况下,它可以单独出现,也可以与皮肤病变结合出现。
    一名15岁女性被诊断为临界型结核性麻风病,此前曾接受多药治疗,2年后出现右臂和前臂内侧偶尔疼痛和刺痛感。影像学检查结果提示SNGN,细胞病理学检查证实了这一点。她被认为是麻风病复发,开始了多种药物治疗和类固醇治疗,随后,她报告肿胀的大小减少,而感觉神经性缺陷没有进一步恶化。
    SNGN,这是麻风病的罕见并发症之一,会造成诊断困境,因为其鉴别诊断包括逆转反应,和周围神经肿瘤(如神经鞘瘤和神经纤维瘤),这篇文章已经概述了。当磁共振成像(MRI)显示明确的卵圆形病变并伴有中央坏死和外周边缘增强时,SNGN的可能性更大。
    由于多种药物治疗,SNGN的发病率呈上升趋势。在我们的案例中,患者出现SNGN,被认为是麻风病复发,开始了多种药物治疗和类固醇治疗,随后,患者报告肿胀的大小显着减少,而感音神经性缺陷没有进一步恶化。因此,通过超声和MRI适当诊断SNGN将导致良好的结果,最终使患者受益。
    UNASSIGNED: Segmental necrotizing granulomatous neuritis (SNGN) is a rare complication of leprosy involving peripheral nerves. It can appear alone in cases of pure neuritic leprosy or in combination with cutaneous lesions.
    UNASSIGNED: A 15-year-old female diagnosed with borderline tuberculoid leprosy who received prior multidrug therapy presented 2 years later with occasional pain and tingling sensations along the inner aspect of her right arm and forearm. Imaging findings suggested SNGN, which was corroborated by cytopathological examination. She was considered relapsed from leprosy, and multi-drug therapy and steroids were started, following which she reported a decrease in the size of the swelling along with no further deterioration of the sensorineural deficit.
    UNASSIGNED: SNGN, which is one of the rare complications of leprosy, can create diagnostic dilemmas as its differential diagnoses include reversal reactions, and peripheral nerve tumors (such as schwannoma and neurofibroma), which have been outlined in this article. SNGN is more likely when magnetic resonance imaging (MRI) shows a well-defined ovoid lesion with central necrosis and peripheral rim enhancement.
    UNASSIGNED: The incidence of SNGN is on the rise due to multi-drug therapy. In our case, the patient developed SNGN, which was considered a relapse from leprosy, and multi-drug therapy and steroids were started, following which the patient reported a significant reduction in the size of the swelling with no further deterioration of the sensorineural deficit. Hence, an appropriate diagnosis of SNGN through ultrasonography and MRI will lead to favorable outcomes, ultimately benefiting the patient.
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  • 文章类型: Case Reports
    浆液性囊性肿瘤是一种罕见的实体,具有良性病程。其成像特点,例如存在多个囊肿,有或没有结节状增强,可以模拟胰腺的其他囊性或实性病变。在计算机断层扫描(CT)或磁共振成像(MRI)上识别具有点状钙化的增强疤痕可能是提示这种诊断的独特发现。胰腺的神经内分泌肿瘤是不同的并且也是罕见的实体。在图像中,他们有早期动脉增强。在核磁共振中,它们在T2上是高强度的,在T1上是低强度的,具有强烈的对比度增强。介绍了一例胰腺有两个局灶性病变的患者,以及整合临床表现的重要性,诊断图像中的符号学,如果适用,说明了胰腺肿瘤最佳管理的组织病理学结果,强调放射科医师在这一过程中的关键作用。
    A serous cystic tumor is a rare entity that has a benign course. Its imaging characteristics, such as the presence of multiple cysts with or without nodular enhancement, can simulate other cystic or solid lesions of the pancreas. Identification of the enhancing scar with punctate calcifications on computed tomography (CT) or magnetic resonance imaging (MRI) may be a distinctive finding suggesting this diagnosis. Neuroendocrine tumors of the pancreas are a different and also rare entity. In images, they have early arterial enhancement. In MRI, they are hyperintense on T2 and hypointense on T1, with avid contrast enhancement. A case of a patient with two focal lesions in the pancreas is presented and the importance of integrating clinical findings, semiology in diagnostic images and, if applicable, the histopathological result for the optimal management of pancreatic tumors is illustrated, highlighting the crucial role of a radiologist in this process.
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  • 文章类型: Case Reports
    我们报告了一例通过腹外缝合进行初次闭合修复的Morgagni疝。此外,我们回顾了腹腔镜修复的Morgagni疝病例,已知疝气缺损的大小,建立网格利用率的尺寸标准。一名87岁的妇女因右上腹部疼痛和呕吐来到我们医院。她没有腹部手术或外伤史。胸部X线摄影和计算机断层扫描(CT)显示Morgagni疝,胃和横结肠突出进入右胸腔。最初,由于她的年龄,对胃疝进行了内窥镜修复,这是成功的。然而,两天后她复发了,促使我们进行半紧急腹腔镜手术。腹腔镜检查显示有Morgagni缺陷,用网膜,横结肠,胃突出,胃因气腹而缩小。幸运的是,突出的器官可以很容易地重新定位到腹部,没有粘连。疝缺损测量为6x3厘米。我们用腹外缝合进行了初次闭合。未进行囊切除。手术持续98分钟。术后第1天开始口服,患者于术后第3天出院,无并发症。术后1个月胸部X线和CT扫描显示无复发,在9个月的随访检查中,患者仍无症状。根据我们的审查结果,原发性闭合是治疗小疝缺损的有效方法(经验法则:宽度,<4厘米;长度,<7厘米)。
    We report a case of a Morgagni hernia repaired by primary closure with an extra-abdominal suture. Moreover, we reviewed cases of laparoscopically repaired Morgagni hernia, in which the size of the hernia defect was known, to establish a size criterion for mesh utilization. An 87-year-old woman presented to our hospital with right upper abdominal pain and vomiting. She had no history of abdominal surgery or trauma. Chest radiography and computed tomography (CT) revealed a Morgagni hernia, with the stomach and transverse colon herniated into the right chest cavity. Initially, an endoscopic repair was performed for the herniated stomach due to her age, which was successful. However, she had a recurrence 2 days later, prompting us to perform a semi-emergent laparoscopic surgery. Laparoscopic examination revealed a Morgagni defect, with the omentum, transverse colon, and stomach herniated, with the stomach reduced by pneumoperitoneum. Fortunately, the herniated organs could be easily relocated into the abdomen with no adhesions. The hernia defect measured 6 x 3 cm. We performed primary closure with an extra-abdominal suture. No sac resection was performed. The operation lasted 98 min. Oral intake was initiated on postoperative day 1, and the patient was discharged on postoperative day 3 without complications. Chest radiography and CT scans at 1 month postoperatively showed no recurrence, and the patient remained asymptomatic at the 9-month follow-up examination. According to our review findings, primary closure is an efficient method for small hernia defects (rule of thumb: width, <4 cm; length, <7 cm).
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  • 文章类型: Case Reports
    动静脉畸形(AVM)是脉管系统的异常连接,导致毛细血管床旁路并导致神经系统恶化和出血的高风险。颈脊髓中的髓内AVM很少见,需要精确的诊断和治疗。我们介绍了一名28岁的白人女性复发性AVM的临床病例,患有突然和严重的颈部疼痛和各种神经系统症状,以及目前的诊断和治疗方式。保守治疗部分有效。MRI和DSA证实了C4水平的AVM,随后在15岁和24岁时进行了几次血管内治疗,神经系统得到了轻度改善。之后,患者接受了康复治疗,神经系统略有改善。该病例突出了AVM的临床进展和治疗,以及当前的病理生理学,分类,和成像。
    Arteriovenous malformation (AVM) is an abnormal connection of vasculature resulting in capillary bed bypassing and leading to neurological deterioration and high risk of bleeding. Intramedullary AVMs in the cervical spinal cord are rare and require precise diagnostics and treatment. We present a clinical case of recurrent AVMs in a 28-year-old Caucasian female with sudden and severe neck pain and variable neurological symptoms along with current diagnostic and treatment modalities. Conservative treatment was partially effective. MRI and DSA confirmed AVMs at C4 level with subsequent several endovascular treatment sessions at the age of 15 and 24 with mild neurological improvement. Afterwards the patient underwent rehabilitation with minor neurological improvement. This case highlights the clinical progression and treatment of AVMs along with showcasing current pathophysiology, classification, and imaging.
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  • 文章类型: Case Reports
    背景:马拉色菌,属于担子菌群的亲脂性和脂肪依赖性酵母,是与各种皮肤疾病相关的机会性真菌病原体,包括脂溢性皮炎和头皮屑。通常,新生儿的马拉色菌感染表现为真菌血症或向骨或肺的血行播散。然而,由于非特异性临床表现和实验室/影像学发现,由这些真菌引起的椎体骨髓炎很少报道.病原体宏基因组学测序(PMseq)技术可以直接对感染标本进行高通量测序,通过全面的报告,促进临床样品中所有微生物的快速准确检测。
    方法:2022年7月20日,我院收治52岁男性,有3个月的门诊困难和局限性下腰痛病史。脊柱的磁共振成像(MRI)检查显示不规则的骨破坏影响L2,L3和L5椎体。此外,在L3和L5之间的椎间盘观察到低T1和高T2强度病变。根据影像学表现对结核性脊柱炎进行推定诊断,尽管所有分枝杆菌测试结果均为阴性。然而,患者在接受常规抗结核治疗3个月后未出现改善.随后的MRI显示椎体内存在扩张性异常信号,导致进行性骨骼破坏。通过来自L4椎体的血液和病理组织的培养证实不存在脊柱结核或其他感染性微生物。随后,对标本进行PMseq,揭示M.liquitta是相对丰度值最高的主要病原体。病理检查显示L4椎体中存在真菌菌丝体,周期性席夫亚甲基胺和高碘酸席夫氏染色呈阳性。抗结核治疗已停止,并给予氟康唑和伏立康唑的抗真菌组合。所有症状均在连续治疗7个月后缓解。病人能够自主走动。在13个月的随访期间,MRI显示椎体病变减少。
    结论:M.restricta不是与感染性椎体骨髓炎相关的常见病原体。然而,PMseq可以帮助诊断,及时治疗,以及一些非特异性传染病的决策。
    BACKGROUND: Malassezia restricta, a lipophilic and lipodependent yeast belonging to the basidiomycetes group, is an opportunistic fungal pathogen associated with various skin diseases, including seborrheic dermatitis and dandruff. Typically, Malassezia infection in neonates manifests as fungemia or hematogenous dissemination to the bone or lungs. However, vertebral osteomyelitis caused by these fungi is rarely reported owing to non-specific clinical presentations and laboratory/imaging findings. The Pathogen Metagenomics Sequencing (PMseq) technique enables direct high-throughput sequencing of infected specimens, facilitating the rapid and accurate detection of all microorganisms in clinical samples through comprehensive reports.
    METHODS: A 52-year-old male was admitted to our hospital on July 20, 2022 with a 3-month history of ambulatory difficulties and localized low back pain. Magnetic Resonance Imaging (MRI) examination of the spinal column revealed irregular bone destruction affecting the L2, L3, and L5 vertebral bodies. Additionally, low T1 and high T2 intensity lesions were observed at the intervertebral discs between L3 and L5. The presumptive diagnosis of tuberculous spondylitis was made based on the imaging findings, despite negative results in all mycobacterium tests. However, the patient exhibited no improvement after receiving regular anti-tuberculosis treatment for 3 months. Subsequent MRI revealed an expansive abnormal signal within the vertebral body, leading to progressive bone destruction. The absence of spinal tuberculosis or other infective microorganisms was confirmed through culture from blood and pathological tissue from the L4 vertebral body. Subsequently, PMseq was performed on the specimens, revealing M. restricta as the predominant pathogen with the highest relative abundance value. The pathological examination revealed the presence of fungal mycelium in the L4 vertebral body, with positive findings on periodic Schiff-methenamine and periodic acid-Schiff staining. The anti-tuberculosis treatment was discontinued, and an antifungal combination of fluconazole and voriconazole was administered. All symptoms were resolved after 7 consecutive months of treatment, and the patient was able to ambulate autonomously. Vertebral lesions were reduced on MRI during the 13-month follow-up.
    CONCLUSIONS: M. restricta is not a commonly recognized pathogen associated with infectious vertebral osteomyelitis. However, PMseq can aid in diagnosis, timely treatment, and decision making for some non-specific infectious diseases.
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  • 文章类型: Journal Article
    背景:门克斯病(MD)是一种罕见的疾病,继承,多系统铜代谢紊乱.经典Menkes病的特征是血清铜和铜蓝蛋白浓度低,导致全身多种异常,特别是在结缔组织和中枢神经系统。然而,血清铜和铜蓝蛋白水平也不是可靠的诊断生物标志物,因为健康新生儿的浓度较低。特征性影像学表现在Menkes病的诊断中起着重要作用。据我们所知,关于Menkes病的全身影像学表现的报道很少。
    方法:一名4个月大的男性患者反复发作。他有认知能力,知识分子,增长,毛马达,精密运动,和语言发展滞后。患者的血红蛋白和血清铜蓝蛋白水平较低。核磁共振成像,颅内血管弯曲增加,大脑和小脑萎缩,白质变化,并观察到基底神经节异常。平片显示虫骨,肋骨扩口,干phy端刺激,和四肢长骨的骨膜反应。在患者中鉴定出ATP7A基因的致病变异,所以他被确诊为门克斯病.尽管在住院期间进行了对症和支持治疗,但他的症状并未改善。不幸的是,婴儿在出院3个月后死亡。
    结论:全面、直观地了解本病的影像学表现,有助于临床医师明确本病,避免延误护理。
    BACKGROUND: Menkes disease (MD) is a rare, inherited, multisystemic copper metabolism disorder. Classical Menkes disease is characterized by low serum copper and ceruloplasmin concentrations, leading to multiple abnormalities in the whole-body, especially in connective tissue and central nervous system. However, serum copper and ceruloplasmin levels are not reliable diagnostic biomarkers due to the low concentrations in healthy newborns either. The featured imaging manifestations play an important role in diagnosing Menkes disease. To our knowledge, there are few reports on the systemic imaging manifestations of Menkes disease.
    METHODS: A 4-month-old male patient presented with recurrent seizures. He had cognitive, intellectual, growth, gross motor, precision movement, and language developmental lags. The patient\'s hemoglobin and serum ceruloplasmin level were low. On MRI, increased intracranial vascular tortuosity, cerebral and cerebellar atrophy, white matter changes, and basal ganglia abnormalities were observed. Plain radiograph revealed wormian bones, rib flaring, metaphyseal spurring, and periosteal reactions in the long bones of the limbs. A pathogenic variant in ATP7A gene was identified in the patient, so he was confirmed the diagnosis of Menkes disease. His symptoms did not improve despite symptomatic and supportive treatment during his hospitalization. Unfortunately, the infant died 3 months after leaving hospital.
    CONCLUSIONS: A comprehensive and intuitive understanding of the disease\'s imaging manifestations can help clinicians to identify the disease and avoid delays in care.
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  • 文章类型: Case Reports
    该报告描述了一名20多岁的男性,他有2个月的反复咯血和胸痛病史。慢性感染,如肺结核,被怀疑。过去,他曾接受过心包内包虫囊肿的手术切除。他的血液检查显示周围嗜酸性粒细胞增多,他的胸部X光检查显示左上区有囊性卵圆病变。CT肺血管造影显示,双侧节段和亚节动脉充盈缺损,左上叶囊性病变。进一步的工作,包括支气管肺泡灌洗培养和胸部MRI,确诊为包虫囊肿的肺包虫病。此病例说明了在没有其他危险因素的年轻男性中出现多系统包虫病。最初接受手术切除和抗蠕虫治疗。这种疾病后来复发,这需要长时间的药物治疗,使病人得到缓解.
    This report describes a male in his late 20s who presented with a 2-month history of recurrent haemoptysis and chest pain. A chronic infection, such as tuberculosis, was suspected. He had undergone surgical resection of an intrapericardial hydatid cyst in the past. His blood investigations showed peripheral eosinophilia, and his chest X-ray showed a cystic oval lesion in the left upper zone. A CT pulmonary angiogram revealed filling defects in the bilateral segmental and subsegmental arteries with a cystic lesion in the left upper lobe. Further workup, including bronchoalveolar lavage culture and MRI of the thorax, confirmed the diagnosis of a hydatid cyst of pulmonary echinococcosis. This case illustrates the presentation of multisystemic echinococcosis in a young male with no other risk factors, initially treated with surgical resection and antihelminthic therapy. The disease later recurred, which required prolonged medications, which brought the patient into remission.
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  • 文章类型: Journal Article
    背景:神经性厌食症(AN)是一种严重的精神疾病,与频繁的复发和治疗反应的变异性有关。先前的文献表明,这种变异性受到病前漏洞的影响,例如奖励系统的异常。几个因素可能表明这些漏洞,如神经认知标记(倾向于支持延迟奖励,认知灵活性差,异常决策过程),遗传和表观遗传标记,生物和激素标记,和生理标记。本研究旨在确定可以预测出院后6个月体重指数(BMI)稳定性的标志物。这项研究的次要目的将集中在表征生物,遗传,AN缓解的表观遗传和神经认知标记。
    方法:将招募诊断为AN的125名女性成年住院患者,并在三个不同的时间进行评估:在住院开始时,出院后和6个月后。根据第三次就诊时的BMI,患者将分为两组:稳定缓解(BMI≥18.5kg/m²)或不稳定缓解(BMI<18.5kg/m²)。将包括一百名(n=100)志愿者作为健康对照。每次访问将包括自我报告的清单(测量抑郁,焦虑,自杀的想法和感觉,饮食失调的症状,运动成瘾和合并症的存在),神经认知任务(延迟贴现任务,跟踪测试,布里克斯顿测试和行动失误任务),血液样本的采集,在标准膳食周围重复收集血液样本,并在休息时进行MRI扫描,同时解决延迟折扣任务。分析将主要包括比较6个月后稳定的患者和在这6个月内复发的患者。
    背景:研究者将要求所有参与者在参与之前给予书面知情同意书,所有数据都将匿名记录.这项研究将根据赫尔辛基宣言(世界医学协会,2013).它于2020年8月25日在clinicaltrials.gov上注册为“神经性厌食症缓解因素(REMANO)”,标识符为NCT04560517(有关更多详细信息,请参阅https://clinicaltrials.gov/ct2/show/record/NCT04560517)。本文基于2019年11月29日的最新协议版本。赞助商,国家研究所(INSERM,https://www.插入。fr/),是负责监督研究的学术机构,每年计划一次审计。结果将在最终分析后以科学文章的形式在同行评审的期刊上发表,并可能在国家和国际会议上发表。
    背景:clinicaltrials.govNCT04560517.
    BACKGROUND: Anorexia nervosa (AN) is a severe psychiatric disorder associated with frequent relapses and variability in treatment responses. Previous literature suggested that such variability is influenced by premorbid vulnerabilities such as abnormalities of the reward system. Several factors may indicate these vulnerabilities, such as neurocognitive markers (tendency to favour delayed reward, poor cognitive flexibility, abnormal decision process), genetic and epigenetic markers, biological and hormonal markers, and physiological markers.The present study will aim to identify markers that can predict body mass index (BMI) stability 6 months after discharge. The secondary aim of this study will be focused on characterising the biological, genetic, epigenetic and neurocognitive markers of remission in AN.
    METHODS: One hundred and twenty-five (n=125) female adult inpatients diagnosed with AN will be recruited and evaluated at three different times: at the beginning of hospitalisation, when discharged and 6 months later. Depending on the BMI at the third visit, patients will be split into two groups: stable remission (BMI≥18.5 kg/m²) or unstable remission (BMI<18.5 kg/m²). One hundred (n=100) volunteers will be included as healthy controls.Each visit will consist in self-reported inventories (measuring depression, anxiety, suicidal thoughts and feelings, eating disorders symptoms, exercise addiction and the presence of comorbidities), neurocognitive tasks (Delay Discounting Task, Trail-Making Test, Brixton Test and Slip-of-action Task), the collection of blood samples, the repeated collection of blood samples around a standard meal and MRI scans at rest and while resolving a delay discounting task.Analyses will mainly consist in comparing patients stabilised 6 months later and patients who relapsed during these 6 months.
    BACKGROUND: Investigators will ask all participants to give written informed consent prior to participation, and all data will be recorded anonymously. The study will be conducted according to ethics recommendations from the Helsinki declaration (World Medical Association, 2013). It was registered on clinicaltrials.gov on 25 August 2020 as \'Remission Factors in Anorexia Nervosa (REMANO)\', with the identifier NCT04560517 (for more details, see https://clinicaltrials.gov/ct2/show/record/NCT04560517). The present article is based on the latest protocol version from 29 November 2019. The sponsor, Institut National de la Santé Et de la Recherche Médicale (INSERM, https://www.inserm.fr/), is an academic institution responsible for the monitoring of the study, with an audit planned on a yearly basis.The results will be published after final analysis in the form of scientific articles in peer-reviewed journals and may be presented at national and international conferences.
    BACKGROUND: clinicaltrials.govNCT04560517.
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  • 文章类型: Journal Article
    背景:心力衰竭(HF)对发病率有很大贡献,死亡率,和全世界的医疗保健费用。密切跟踪医院再入院率,并确定联邦报销美元。当前的模态或技术不允许在动态中精确测量相关的HF参数,农村,或服务不足的设置。这限制了远程医疗在非卧床患者中诊断或监测HF的使用。
    目的:本研究描述了一种使用标准手机录音的新型HF诊断技术。
    方法:这项声学麦克风录音的前瞻性研究纳入了来自美国2个不同地区2个不同临床地点的患者的便利样本。在患者直立的情况下在主动脉(第二肋间)部位获得记录。该团队使用录音来创建基于物理(而不是神经网络)模型的预测算法。分析将手机声学数据与超声心动图评估的射血分数(EF)和每搏输出量(SV)相匹配。使用基于物理的方法来确定特征,完全消除了对神经网络和过拟合策略的需求,可能在数据效率方面提供优势,模型稳定性,监管可见性,和身体上的洞察力。
    结果:记录来自113名参与者。由于背景噪音或任何其他原因,没有记录被排除。参与者具有不同的种族背景和体表区域。113例患者的EF和65例患者的SV均可获得可靠的超声心动图数据。EF队列的平均年龄为66.3(SD13.3)岁,女性患者占该组的38.3%(43/113)。使用≤40%与>40%的EF截止值,该模型(使用4个特征)的受试者工作曲线下面积(AUROC)为0.955,灵敏度为0.952,特异性为0.958,准确度为0.956.SV队列的平均年龄为65.5(SD12.7)岁,女性患者占该组的34%(38/65)。使用<50mL与>50mL的临床相关SV截止值,该模型(使用3个特征)的AUROC为0.922,敏感性为1.000,特异性为0.844,准确性为0.923.观察到与SV相关的声学频率高于与EF相关的声学频率,因此,不太可能穿过组织而不变形。
    结论:这项工作描述了使用未改变的蜂窝麦克风获得的移动电话听诊录音的使用。该分析以令人印象深刻的准确性再现了EF和SV的估计。这项技术将进一步发展成为一个移动应用程序,可以将HF的筛查和监测带到几个临床环境中,比如家庭或远程医疗,农村,远程,以及全球服务不足的地区。这将使用他们已经拥有的设备以及在不存在其他诊断和监测选项的情况下,为HF患者带来高质量的诊断方法。
    BACKGROUND: Heart failure (HF) contributes greatly to morbidity, mortality, and health care costs worldwide. Hospital readmission rates are tracked closely and determine federal reimbursement dollars. No current modality or technology allows for accurate measurement of relevant HF parameters in ambulatory, rural, or underserved settings. This limits the use of telehealth to diagnose or monitor HF in ambulatory patients.
    OBJECTIVE: This study describes a novel HF diagnostic technology using audio recordings from a standard mobile phone.
    METHODS: This prospective study of acoustic microphone recordings enrolled convenience samples of patients from 2 different clinical sites in 2 separate areas of the United States. Recordings were obtained at the aortic (second intercostal) site with the patient sitting upright. The team used recordings to create predictive algorithms using physics-based (not neural networks) models. The analysis matched mobile phone acoustic data to ejection fraction (EF) and stroke volume (SV) as evaluated by echocardiograms. Using the physics-based approach to determine features eliminates the need for neural networks and overfitting strategies entirely, potentially offering advantages in data efficiency, model stability, regulatory visibility, and physical insightfulness.
    RESULTS: Recordings were obtained from 113 participants. No recordings were excluded due to background noise or for any other reason. Participants had diverse racial backgrounds and body surface areas. Reliable echocardiogram data were available for EF from 113 patients and for SV from 65 patients. The mean age of the EF cohort was 66.3 (SD 13.3) years, with female patients comprising 38.3% (43/113) of the group. Using an EF cutoff of ≤40% versus >40%, the model (using 4 features) had an area under the receiver operating curve (AUROC) of 0.955, sensitivity of 0.952, specificity of 0.958, and accuracy of 0.956. The mean age of the SV cohort was 65.5 (SD 12.7) years, with female patients comprising 34% (38/65) of the group. Using a clinically relevant SV cutoff of <50 mL versus >50 mL, the model (using 3 features) had an AUROC of 0.922, sensitivity of 1.000, specificity of 0.844, and accuracy of 0.923. Acoustics frequencies associated with SV were observed to be higher than those associated with EF and, therefore, were less likely to pass through the tissue without distortion.
    CONCLUSIONS: This work describes the use of mobile phone auscultation recordings obtained with unaltered cellular microphones. The analysis reproduced the estimates of EF and SV with impressive accuracy. This technology will be further developed into a mobile app that could bring screening and monitoring of HF to several clinical settings, such as home or telehealth, rural, remote, and underserved areas across the globe. This would bring high-quality diagnostic methods to patients with HF using equipment they already own and in situations where no other diagnostic and monitoring options exist.
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