Bacterial infections and mycoses

  • 文章类型: Journal Article
    这项研究旨在评估美国头癣的当前管理,特别关注0-2个月的患者,2个月到2年,2年到18年。网上调查,通过小儿皮肤病学研究联盟和小儿皮肤病学会分发,揭示了以下偏好:氟康唑对于2个月以下的人,灰黄霉素适用于2个月至2岁的人,和特比萘芬适用于2岁及以上的人群。在儿科皮肤科社区中,头癣治疗方案的提供者之间存在差异。
    This study aimed to evaluate the current management of tinea capitis in the United States, specifically focusing on patients aged 0-2 months, 2 months to 2 years, and 2 years to 18 years. An online survey, distributed through the Pediatric Dermatology Research Alliance and the Society of Pediatric Dermatology, revealed the following preferences: fluconazole for those under 2 months, griseofulvin for those aged 2 months to 2 years, and terbinafine for those aged 2 years and older. There exists inter-provider variation in tinea capitis treatment regimens within the pediatric dermatology community.
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  • 文章类型: Case Reports
    毛霉菌病是一种罕见的破坏性真菌感染,死亡率高,通常与糖尿病和免疫抑制个体有关。然而,在术后状态和免疫功能正常的患者中发现的感染很少见。除了积极的清创术以防止感染扩散外,全身性脂质体两性霉素还被视为毛霉菌病的一线治疗方法。描述全身和局部两性霉素B治疗毛霉菌病的文献很少。我们介绍了一例因穿孔憩室炎而入院的具有免疫能力的男性,他接受了左半结肠切除术并进行了结肠造口术。住院期间,据报道,结肠造口袋里的粪便渗入伤口。发现该患者具有广泛的坏死组织,术后切口部位有霉菌生长。伤口培养和病理报告证实毛霉菌病。患者接受静脉注射(IV)脂质体两性霉素B治疗,用两性霉素/盐水混合物每日两次伤口敷料和连续伤口清创。患者病情稳定,伤口愈合成功。
    Description Mucormycosis is a rare devastating fungal infection with a high mortality rate often associated with diabetic and immunosuppressed individuals. However, infections found in postoperative states and in immunocompetent patients are rare. Systemic liposomal amphotericin is viewed as a first line treatment for mucormycosis in addition to aggressive debridement to prevent the spread of infection. Literature describing the treatment of mucormycosis with both systemic and topical amphotericin B is scarce. We present a case of an immunocompetent male admitted for perforated diverticulitis who received a left hemicolectomy with colostomy creation. During hospitalization, stool from the colostomy bag was reportedly leaking into the wound. The patient was found to have extensive necrotic tissue with mold growing in his postoperative incision site. The wound culture and pathology report confirmed mucormycosis. The patient was treated with intravenous (IV) liposomal amphotericin B, wound dressings with an amphotericin/saline mixture twice daily and serial wound debridements. The patient was discharged in stable condition with successful wound healing.
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  • 文章类型: Case Reports
    坏疽性坏疽(EG)是潜在的铜绿假单胞菌感染的相对罕见的皮肤表现,临床上被描述为坏疽性溃疡被红斑晕包围。EG的病例可能在没有菌血症的情况下发生,并且越来越多的文献报道。在这里,我们介绍了一个具有EG和脂膜炎特征的患者,尽管缺乏潜在的菌血症。
    一名57岁的男性出现在急诊科,患有持续四至五天的右侧下背部疼痛和“瘙痒和疼痛”皮疹。该患者有广泛的静脉药物滥用史,并因假单胞菌菌血症多次住院。经检查,有弥漫的,腹部红斑皮下结节和几个个体坏死性溃疡,上肢和下肢,被红斑光环包围。MRI显示右侧椎旁区域肌炎和水肿,血培养假单胞菌呈阴性。
    EG通常被分类为细菌性或非细菌性,在没有菌血症的情况下,脂膜炎的报告有限。该患者的表现对于非细菌性EG伴脂膜炎的弥漫性表现是不寻常的。由于患者过去的深种子假单胞菌感染病史,细菌可以直接接种到不同注射部位的皮肤中。
    虽然EG是一种少见但公认的假单胞菌菌血症的皮肤病学特征,据报道,脂膜炎较不常见,也可能被低估。医生应该意识到潜在的假单胞菌感染的皮肤表现,因此可以开始适当的抗生素治疗。
    UNASSIGNED: Ecthyma gangrenosum (EG) is a relatively uncommon cutaneous manifestation of an underlying Pseudomonas aeruginosa infection and is clinically described as necrotic with gangrenous ulcers surrounded by erythematous halos. Cases of EG may occur in the absence of bacteremia and have been increasingly reported in literature. Here we present a patient with features of both EG and panniculitis, despite the lack of underlying bacteremia.
    UNASSIGNED: A 57-year-old male presented to the emergency department with unrelenting right-sided lower back pain and an \"itchy and painful\" rash of four to five day duration. The patient had an extensive history of intravenous drug abuse and had been hospitalized multiple times for Pseudomonas bacteremia. Upon examination, there were diffuse, erythematous subcutaneous nodules and several individual necrotic ulcerations on the abdomen, upper and lower extremities, surrounded by erythematous halos. An MRI revealed myositis and edema in the right paraspinal region, and blood cultures were negative for Pseudomonas.
    UNASSIGNED: EG is typically classified as bacteremic or non-bacteremic in nature, and there are limited reports of panniculitis in the absence of bacteremia. This patient\'s presentation was unusual for the diffuse presentation of non-bacteremic EG with panniculitis. Due to the patient\'s past medical history of deep-seeded Pseudomonas infections, bacteria could have been directly inoculated into the skin at various injection sites.
    UNASSIGNED: While EG is an uncommon but well-recognized dermatologic feature of Pseudomonas bacteremia, panniculitis is reportedly less commonly and likely underrecognized. Physicians should become aware of the cutaneous manifestations of underlying Pseudomonas infection so appropriate antibiotic therapy can be initiated.
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  • 文章类型: Journal Article
    COVID-19是一种严重的全球性传染病,损害了世界各地人们的生活质量。SARS-CoV-2可能存在于COVID-19感染患者的鼻咽和唾液分泌物中,并主要通过呼吸道飞沫传播。它给牙科带来了挑战,因为许多牙科手术会产生可能导致交叉污染的气溶胶。它还会出现许多感染后的并发症,这些并发症可能会继续使患者衰弱,即使在成功控制病毒之后。一种这样的并发症可能是颌骨骨髓炎。出现了两例COVID-19后颌骨骨髓炎病例,这些病例被确定与其他健康个体的毛霉菌病无关,先前没有牙科疾病。试图阐明COVID后病例的临床症状,这些症状可能表明对该病的诊断。还讨论了病理生理学,这可能有助于制定预防和管理COVID后颌骨骨髓炎的指南。
    COVID-19 is a serious global infectious disease impairing the quality of life of people across the world. SARS-CoV-2 may reside in nasopharyngeal and salivary secretions of COVID-19-infected patients and spreads mainly through respiratory droplets and fomites. It has presented a challenge to dentistry, as many dental procedures generate aerosols that could lead to cross-contamination. It also presents many post-infection complications that may continue to debilitate patients, even after successful management of the virus. One such complication may be osteomyelitis of the jaw. Two cases of post-COVID-19 osteomyelitis of the jaw are presented that were determined to be unrelated to mucormycosis in otherwise healthy individuals with no prior dental complaints. An attempt is made to shed light on clinical signs in post-COVID cases that may point to a diagnosis of the condition. The pathophysiology is also discussed, which may help in formulating guidelines to prevent and manage post-COVID osteomyelitis of the jaw.
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  • 文章类型: Case Reports
    背景:中枢神经系统侵袭性曲霉病是一种罕见但日益普遍的疾病。我们介绍了一名免疫抑制患者的不寻常病例,该患者患有意外的超感染侵袭性曲霉病,肺门,和肾上腺表现,模仿转移的支气管癌。该报告揭示了根据非特异性临床发现在脑肿块病变的鉴别诊断中包括曲霉病的重要性。
    方法:一名58岁的免疫功能低下的女性因一次强直阵挛性癫痫发作出现在我们的急诊科。成像显示一个环形增强的脑肿块,伴有病灶周围水肿,并有两个较小的其他出血性脑病变的证据。在肺部肿块病变的背景下,以及左肾上腺的其他结节性病变,怀疑诊断为转移的支气管癌,并切除了脑肿块。然而,组织学没有发现任何肿瘤病变的证据,但与曲霉菌一致的菌丝分离,微生物培养证实伴随葡萄球菌感染。
    结论:在免疫抑制的情况下,应保持对曲霉菌感染的高度怀疑。临床和放射学发现通常是无特异性的,甚至是误导性的。明确的确认通常依赖于组织化学染色的组织诊断。手术切除对于建立诊断和指导靶向抗真菌药物治疗至关重要。
    BACKGROUND: Invasive aspergillosis of the central nervous system is a rare but increasingly prevalent disease. We present the unusual case of an immunosuppressed patient suffering from unexpected superinfected invasive aspergillosis with cerebral, pulmonal, and adrenal manifestations, mimicking a metastasized bronchial carcinoma. This report reveals the importance of including aspergillosis in the differential diagnosis of a cerebral mass lesion in the light of unspecific clinical findings.
    METHODS: A 58-year-old immunocompromised female presented to our emergency department with a single tonic-clonic seizure. Imaging showed a ring enhancing cerebral mass with perifocal edema and evidence of two smaller additional hemorrhagic cerebral lesions. In the setting of a mass lesion in the lung, and additional nodular lesions in the left adrenal gland the diagnosis of a metastasized bronchus carcinoma was suspected and the cerebral mass resected. However, histology did not reveal any evidence for a neoplastic lesion but septate hyphae consistent with aspergillus instead and microbiological cultures confirmed concomitant staphylococcal infection.
    CONCLUSIONS: A high index of suspicion for aspergillus infection should be maintained in the setting of immunosuppression. Clinical and radiological findings are often unspecific and even misleading. Definite confirmation usually relies on tissue diagnosis with histochemical stains. Surgical resection is crucial for establishing the diagnosis and guiding therapy with targeted antifungal medications.
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  • 文章类型: Journal Article
    Infectious complications can be a major cause of morbidity and mortality in solid organ transplant recipients. Preservation fluid is necessary to maintain organ viability but may serve as a vector or infection. The utility of screening preservation fluid routinely for microbial growth and the impact of culture-positive preservation fluid is controversial. Research Question: What is the clinical impact of a culture positive preservation fluid in a kidney transplant recipient?
    This retrospective study was performed to define the incidence of post-operative infection related to PF and examine the negative sequelae of culture-positive PF. One hundred and fifty-two deceased donor renal transplant recipients from January 2015 to December 2017 were included for analysis.
    Overall, 67% of patients (102/152) received an allograft from a culture-positive PF. Nearly 80% of microbial growth was consistent with skin flora, and coagulase-negative staphylococci was the most frequently isolated organism (56%). Sixty-seven percent of patients (68/102) with culture-positive PF received antimicrobial treatment for an average duration of 5 days. There was no difference in the incidence of infection between patients with culture positive PF compared to culture-negative PF. Furthermore, there were no cases of infection related to PF regardless of whether culture-positive PF was treated or untreated. The incidence of subsequent C. difficile infection and multidrug-resistant organisms was similar.
    This study suggests antimicrobial treatment for culture positive PF may not be necessary with pathogens that are common contaminants and of low virulence. Interventional studies are needed to validate this strategy.
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  • 文章类型: Case Reports
    This report presents the case of a 13-year-old female patient with history of acute myeloid leukemia, who, after a bone marrow transplant, began to vomit and experienced rapidly progressive deterioration of consciousness, in addition to disseminated erythematous-violaceous macules, and some blisters with hemorrhagic content inside. Skin biopsy evidenced intravascular filamentous structures. A blood culture confirmed the presence of Fusarium oxysporum. Intravenous treatment with voriconazole was initiated. The patient evolved unfavorably with multiple necrotic skin lesions, ischemic brain lesions, and death.
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  • 文章类型: Comparative Study
    According to clinical guidelines, there are no differences in early infection rates when utilizing antimicrobial prophylaxis regimens beyond 24 hours. We shortened the prophylaxis regimen from 72 to 24 hours in liver transplant recipients due to rising rates of resistance. The objective of this study is to evaluate the difference in posttransplant outcomes, following the protocol change.
    We reviewed adult patients undergoing orthotopic liver transplantation between June 2013 and December 2015. Patients were stratified into 2 cohorts: 24 and 72 hours. Patients were excluded if donor cultures were positive. The primary objective of this study is to evaluate the incidence and time to posttransplant infections. The secondary objectives included analysis of total and intensive care unit length of stay and rates of Clostridioides difficile infection.
    Forty-four patients were included, 20 in the 72-hour and 24 in the 24-hour cohorts. The incidence of post-OLT infection (30% vs 8%, P = .115, 95% CI: -1% to 45%) was higher in the 72-hour cohort. Total (21 vs 14, P = .332, 95% CI: -4% to 28%) and intensive care unit LOS (11 vs 6, P = .201, 95% CI, -5% to 31%) were longer in the 72-hour group. No difference was observed in the incidence of CDI (15% vs 13%, P = 1.000).
    There was no increase in posttransplant infections in the 24-hour cohort. Shorter antibiotic exposure may be associated with a reduction in length of stay and be favorable in this patient population.
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  • 文章类型: Case Reports
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  • 文章类型: Journal Article
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