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Babu K, Padmapriya PG, Gowda SMN, Murthy PR. Recurrent Choroidal Neovascular Membrane as the Initial Presentation of Mycobacterium chimaera-Associated Serpiginoid Choroiditis. Ocul Immunol Inflamm 2024:1-6. [PMID: 38889671 DOI: 10.1080/09273948.2024.2367654] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2024] [Accepted: 06/09/2024] [Indexed: 06/20/2024]
Abstract
PURPOSE To report a rare presentation of a proven case of Mycobacterium chimaera infection presenting as multifocal choroiditis with recurrent choroidal neovascular membrane (CNVM) in one eye, initially misdiagnosed as punctate inner choroidopathy and later developed serpiginous-like choroiditis in the other eye. METHODS Retrospective case report with a review of existing literature. RESULTS A 30-year-old women presented with metamorphopsia (OD) and best-corrected visual acuity (BCVA) of 6/24 (OD) and was diagnosed to have punctate inner choroidopathy with CNVM (OD). Since then, she had received four intravitreal anti-vascular endothelial growth factor injections over 3 years. Two years later, she developed a slowly progressing choroidal lesion radiating from the disc in a serpiginoid manner in the left eye. There was no vitritis. Labs revealed a positive QuantiFERON-TB Gold test. High-resolution computed tomography of the thorax showed sub-centimetre noncalcified lymph nodes in subcarinal and perivascular regions, minimal pleural thickening in left lower zone, minimal pericardial effusion, bronchiectatic changes, and fibrotic strands in right middle and left lower lobes. Bronchoalveolar lavage grew M. chimaera intracellularae (matrix-assisted laser desorption/ionization time-of-flight mass spectrometry). She was given a course of clarithromycin, moxifloxacin, rifampicin, and doxycycline for 12 months. Though the right eye remained stable, choroidal lesion in the left eye continued to progress threatening the fovea, requiring oral steroids, methotrexate, and an intravitreal dexamethasone implant. At the last follow-up, her BCVA was 6/18 (OD) and 6/6 (OS). Both eyes were stable. CONCLUSION This case highlights a rare presentation of proven M. chimaera infection presenting as multifocal choroiditis with recurrent CNVM in one eye and serpiginous-like choroiditis in the other eye, requiring aggressive treatment to salvage the vision.
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Affiliation(s)
- Kalpana Babu
- Department of Uvea and Ocular Inflammation, Prabha Eye Clinic, Research Centre, Vittala International Institute of Ophthalmology, Bengaluru, India
| | - P G Padmapriya
- Department of Uvea and Ocular Inflammation, Prabha Eye Clinic, Research Centre, Vittala International Institute of Ophthalmology, Bengaluru, India
| | - Sunitha M N Gowda
- Department of Vitreoretinal Services, Prabha Eye Clinic, Research Centre, Vittala International Institute of Ophthalmology, Bengaluru, India
| | - Praveen R Murthy
- Department of Vitreoretinal Services, Prabha Eye Clinic, Research Centre, Vittala International Institute of Ophthalmology, Bengaluru, India
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Cannas A, Campanale A, Minella D, Messina F, Butera O, Nisii C, Mazzarelli A, Fontana C, Lispi L, Maraglino F, Di Caro A, Sabbatucci M. Epidemiological and Molecular Investigation of the Heater-Cooler Unit (HCU)-Related Outbreak of Invasive Mycobacterium chimaera Infection Occurred in Italy. Microorganisms 2023; 11:2251. [PMID: 37764096 PMCID: PMC10536513 DOI: 10.3390/microorganisms11092251] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/13/2023] [Revised: 09/04/2023] [Accepted: 09/05/2023] [Indexed: 09/29/2023] Open
Abstract
BACKGROUND From 2013 onwards, a large outbreak of Mycobacterium chimaera (MC) invasive infection, which was correlated with the use of contaminated heater-cooler units (HCUs) during open chest surgery, was reported from all over the world. Here, we report the results of the epidemiological and molecular investigations conducted in Italy after the alarm raised about this epidemic event. METHODS MC strains isolated from patients or from HCU devices were characterized by genomic sequencing and molecular epidemiological analysis. RESULTS Through retrospective epidemiological analysis conducted between January 2010 and December 2022, 40 possible cases of patients infected with MC were identified. Thirty-six strains isolated from these patients were analysed by whole genome sequencing (WGS) and were found to belong to the genotypes 1.1 or 1.8, which are the genotypes correlated with the outbreak. Most of the cases presented with prosthetic valve endocarditis, vascular graft infection or disseminated infection. Among the cases found, there were 21 deaths. The same analysis was carried out on HCU devices. A total of 251 HCUs were found to be contaminated by MC; genotypes 1.1 or 1.8 were identified in 28 of those HCUs. CONCLUSIONS To ensure patients' safety and adequate follow-up, clinicians and general practitioners were made aware of the results and public health measures, and recommendations were issued to prevent further cases in the healthcare settings. The Italian Society of Cardiac Surgery performed a national survey to assess the incidence of HCU-related MC prosthetic infections in cardiac surgery. No cases were reported after HCU replacement or structural modification and disinfection and possibly safe allocation outside surgical rooms.
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Affiliation(s)
- Angela Cannas
- National Institute for Infectious Diseases Lazzaro Spallanzani IRCCS, 00149 Rome, Italy; (A.C.); (F.M.); (O.B.); (A.M.); (C.F.)
| | - Antonella Campanale
- Unit 5, Directorate General of Medical Devices and Pharmaceutical Service, Ministry of Health, 00144 Rome, Italy; (A.C.); (D.M.); (L.L.)
| | - Daniela Minella
- Unit 5, Directorate General of Medical Devices and Pharmaceutical Service, Ministry of Health, 00144 Rome, Italy; (A.C.); (D.M.); (L.L.)
| | - Francesco Messina
- National Institute for Infectious Diseases Lazzaro Spallanzani IRCCS, 00149 Rome, Italy; (A.C.); (F.M.); (O.B.); (A.M.); (C.F.)
| | - Ornella Butera
- National Institute for Infectious Diseases Lazzaro Spallanzani IRCCS, 00149 Rome, Italy; (A.C.); (F.M.); (O.B.); (A.M.); (C.F.)
| | - Carla Nisii
- National Institute for Infectious Diseases Lazzaro Spallanzani IRCCS, 00149 Rome, Italy; (A.C.); (F.M.); (O.B.); (A.M.); (C.F.)
| | - Antonio Mazzarelli
- National Institute for Infectious Diseases Lazzaro Spallanzani IRCCS, 00149 Rome, Italy; (A.C.); (F.M.); (O.B.); (A.M.); (C.F.)
| | - Carla Fontana
- National Institute for Infectious Diseases Lazzaro Spallanzani IRCCS, 00149 Rome, Italy; (A.C.); (F.M.); (O.B.); (A.M.); (C.F.)
| | - Lucia Lispi
- Unit 5, Directorate General of Medical Devices and Pharmaceutical Service, Ministry of Health, 00144 Rome, Italy; (A.C.); (D.M.); (L.L.)
| | - Francesco Maraglino
- Unit 5, Directorate General Health Prevention Communicable Diseases and International Prophylaxis, Ministry of Health, 00144 Rome, Italy; (F.M.); (M.S.)
| | - Antonino Di Caro
- Department of Microbiology, Unicamillus International University of Medicine, 00131 Rome, Italy;
| | - Michela Sabbatucci
- Unit 5, Directorate General Health Prevention Communicable Diseases and International Prophylaxis, Ministry of Health, 00144 Rome, Italy; (F.M.); (M.S.)
- Department Infectious Diseases, Istituto Superiore di Sanità, 00161 Rome, Italy
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3
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Kavvalou A, Stehling F, Tschiedel E, Kehrmann J, Walkenfort B, Hasenberg M, Olivier M, Steindor M. Biofilm infection of a central venous port-catheter caused by Mycobacterium avium complex in an immunocompetent child with cystic fibrosis. BMC Infect Dis 2022; 22:921. [PMID: 36494632 PMCID: PMC9733094 DOI: 10.1186/s12879-022-07899-x] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 06/14/2022] [Accepted: 11/25/2022] [Indexed: 12/13/2022] Open
Abstract
BACKGROUND Mycobacterium (M.) chimaera is a non-tuberculous mycobacterium (NTM) that belongs to M. avium complex (MAC). In patients with cystic fibrosis (CF), MAC can cause bronchopulmonary infections that can be prolonged and difficult to treat. MAC infections of sites other than the lungs or central catheters are rare and almost exclusively associated with immunodeficiency. CASE PRESENTATION We present a case of an 8-year-old CF patient (delF508 homozygous) with recurrent pulmonary exacerbations, gradual clinical deterioration, B-symptoms (fever, fatigue, weight loss, night sweat), elevated transaminases and intermittent detection of M. chimaera in the sputum without radiological signs of NTM-associated lung disease with a central venous port-catheter. Next-generation sequencing (NGS) revealed M. chimaera port infection that was also confirmed by mycobacterial culture. The patient recovered within 4 weeks after removal of the catheter and initiation of MAC targeted antimicrobial therapy. Electron microscopy of the catheter illustrated the presence of mycobacteria in a biofilm. CONCLUSIONS MAC central venous catheter infection needs to be considered in immunocompetent people. NGS is a valuable tool for rapid identification of rare infections. MAC capability of biofilm formation renders catheter removal the central therapeutic intervention for the clearance of the infection.
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Affiliation(s)
- Alexandra Kavvalou
- grid.5718.b0000 0001 2187 5445Department of Pediatric Pulmonology and Sleep Medicine, University Hospital Essen, Children’s Hospital, University of Duisburg-Essen, Hufelandstr. 55, 45147 Essen, Germany
| | - Florian Stehling
- grid.5718.b0000 0001 2187 5445Department of Pediatric Pulmonology and Sleep Medicine, University Hospital Essen, Children’s Hospital, University of Duisburg-Essen, Hufelandstr. 55, 45147 Essen, Germany
| | - Eva Tschiedel
- grid.5718.b0000 0001 2187 5445Department of Pediatric Intensive Care, Children’s Hospital, University of Duisburg-Essen, Essen, Germany
| | - Jan Kehrmann
- grid.5718.b0000 0001 2187 5445Institute of Medical Microbiology, University Hospital Essen, University of Duisburg-Essen, Essen, Germany
| | - Bernd Walkenfort
- grid.5718.b0000 0001 2187 5445Institute for Experimental Immunology and Imaging, Imaging Center Essen, Electron Microscopy Unit (EMU), University of Duisburg-Essen, Essen, Germany
| | - Mike Hasenberg
- grid.5718.b0000 0001 2187 5445Institute for Experimental Immunology and Imaging, Imaging Center Essen, Electron Microscopy Unit (EMU), University of Duisburg-Essen, Essen, Germany
| | - Margarete Olivier
- grid.5718.b0000 0001 2187 5445Department of Pediatric Pulmonology and Sleep Medicine, University Hospital Essen, Children’s Hospital, University of Duisburg-Essen, Hufelandstr. 55, 45147 Essen, Germany
| | - Mathis Steindor
- grid.5718.b0000 0001 2187 5445Department of Pediatric Pulmonology and Sleep Medicine, University Hospital Essen, Children’s Hospital, University of Duisburg-Essen, Hufelandstr. 55, 45147 Essen, Germany
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Veenis A, Haghnegahdar M, Ajlan R. Mycobacterium chimaera chorioretinitis preceding central nervous system lesions: a case report and review of the literature. BMC Ophthalmol 2022; 22:316. [PMID: 35869478 PMCID: PMC9308188 DOI: 10.1186/s12886-022-02528-2] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2022] [Accepted: 07/07/2022] [Indexed: 11/17/2022] Open
Abstract
Background Mycobacterium chimaera ocular infection is a rare disease that is linked to bypass devices used during cardiothoracic surgeries. Reported cases in the literature of ocular involvement preceding CNS involvement are based on clinical exam with no neuroimaging. Here we present a case of M. chimaera ocular infection with no CNS M. chimaera lesions on brain magnetic resonance imaging (MRI). Case presentation A 59-year-old female presented with altered mental status and blurred vision in February 2021. Her past medical history was significant for aortic valve replacement and ascending aortic aneurysm repair in 2017 complicated by known M. chimaera infection. She had been receiving azithromycin, ethambutol, rifampin, and amikacin as systemic anti-mycobacterium treatment. Her dilated fundus exam showed numerous yellow placoid circular lesions scattered throughout the macula and peripheral retina in both eyes with associated vitritis. Systemic workup, including brain MRI showed no acute infectious lesions. Her infections workup was unremarkable except for a positive toxoplasma IgM, for which she was treated with sulfamethoxazole/trimethoprim. One month later, a head computed tomography showed new numerous scattered round foci of hyperdensity throughout the cerebrum and brainstem thought to be foci of M. chimaera infection. Clofazimine was added per culture and sensitivity. MRI brain 1 month later showed mild decrease in conspicuity and number of these intensities while on anti-mycobacterium treatment. Her cognition had improved at that time as well. She was seen in retina clinic 2 months later where her exam showed similar retinal lesions with no associated vitritis or anterior chamber cell in bilateral eyes, suggesting a lack of active infection. Optical coherence tomography macula showed parafoveal cystoid macular edema bilaterally. She was started on steroidal and non-steroidal anti-inflammatory eye drops. Conclusions To the best of our knowledge, this is the first case in the literature to report M. chimaera chorioretinitis with concomitant negative neuroimaging. Chorioretinal M. chimaera lesions should motivate high suspicion of CNS involvement prompting early neurological work up.
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Sanchez-Nadales A, Diaz-Sierra A, Mocadie M, Asher C, Gordon S, Xu B. Advanced Cardiovascular Imaging for the Diagnosis of Mycobacterium chimaera Prosthetic Valve Infective Endocarditis After Open-heart Surgery: A Contemporary Systematic Review. Curr Probl Cardiol 2022; 47:101392. [PMID: 36100093 DOI: 10.1016/j.cpcardiol.2022.101392] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/31/2022] [Accepted: 09/07/2022] [Indexed: 11/18/2022]
Abstract
Mycobacterium chimaera is an opportunistic and emerging pathogen, which has been recognized to cause prosthetic valve infective endocarditis and disseminated infection following open-chest cardiac surgery with certain contaminated heater-cooler systems. Diagnostic evaluation of suspected prosthetic valve infective endocarditis due to Mycobacterium chimaera is challenging and requires a very high index of suspicion. This systematic review aims to evaluate prosthetic valve infective endocarditis due to Mycobacterium chimaera. Based on the current literature review, transesophageal echocardiography and 18F-fluorodeoxyglucose positron emission tomography/computed tomography are the most common imaging modalities used to establish the diagnosis. Based on twenty-two published cases, the reported cases of Mycobacterium chimaera endocarditis have occurred almost entirely in males. Within this cohort, the patients developed endocarditis on average 2.7 years after exposure to contaminated heater-cooler systems during cardiac surgery. Mycobacterium chimaera infection is associated with significant morbidity and mortality.
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Affiliation(s)
| | | | - Michele Mocadie
- Department of Infectious Diseases, University Hospitals, Cleveland, OH
| | - Craig Asher
- Department of Cardiovascular Disease, Cleveland Clinic Florida, Weston FL
| | - Steven Gordon
- Department of Infectious Diseases, Cleveland Clinic, Cleveland, OH
| | - Bo Xu
- Section of Cardiovascular Imaging, Robert and Suzanne Tomsich Department of Cardiovascular Medicine, Sydell and Arnold Miller Family Heart, Vascular and Thoracic Institute, Cleveland Clinic, Cleveland, OH.
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Mason M, Gregory E, Foster K, Klatt M, Zoubek S, Eid A. Pharmacologic management of Mycobacterium chimaera Infections: A Primer for Clinicians. Open Forum Infect Dis 2022; 9:ofac287. [PMID: 35866101 PMCID: PMC9297092 DOI: 10.1093/ofid/ofac287] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/13/2022] [Accepted: 06/13/2022] [Indexed: 11/28/2022] Open
Abstract
Mycobacterium chimaera, a member of the Mycobacterium avium complex, can cause infections in individuals after open heart surgery due to contaminated heater-cooler units. The diagnosis can be challenging, as the incubation period can be quite variable, and symptoms are nonspecific. In addition to aggressive surgical management, combination pharmacologic therapy is the cornerstone of therapy, which should consist of a macrolide, a rifamycin, ethambutol, and amikacin. Multiple second-line agents may be utilized in the setting of intolerances or toxicities. In vitro susceptibility of these agents is similar to activity against other species in the Mycobacterium avium complex. Drug–drug interactions are frequently encountered, as many individuals have chronic medical comorbidities and are prescribed medications that interact with the first-line agents used to treat M. chimaera. Recognition of these drug–drug interactions and appropriate management are essential for optimizing treatment outcomes.
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Affiliation(s)
- Matt Mason
- The University of Kansas Health System, Department of Pharmacy , Kansas City, KS , USA
| | - Eric Gregory
- The University of Kansas Health System, Department of Pharmacy , Kansas City, KS , USA
| | - Keith Foster
- The University of Kansas Health System, Department of Pharmacy , Kansas City, KS , USA
| | - Megan Klatt
- The University of Kansas Health System, Department of Pharmacy , Kansas City, KS , USA
| | - Sara Zoubek
- The University of Kansas Health System, Department of Pharmacy , Kansas City, KS , USA
| | - Albert Eid
- Kansas University Medical Center, Department of Infectious Diseases , Kansas City, KS , USA
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Differences between Mycobacterium chimaera and tuberculosis Using Ocular Multimodal Imaging: A Systematic Review. J Clin Med 2021; 10:jcm10214880. [PMID: 34768406 PMCID: PMC8585020 DOI: 10.3390/jcm10214880] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/11/2021] [Revised: 10/04/2021] [Accepted: 10/13/2021] [Indexed: 12/13/2022] Open
Abstract
Due to their non-specific diagnostic patterns of ocular infection, differential diagnosis between Mycobacterium (M.) chimaera and tuberculosis can be challenging. In both disorders, ocular manifestation can be the first sign of a systemic infection, and a delayed diagnosis might reduce the response to treatment leading to negative outcomes. Thus, it becomes imperative to distinguish chorioretinal lesions associated with M. chimaera, from lesions due to M. tuberculosis and other infectious disorders. To date, multimodal non-invasive imaging modalities that include ultra-wide field fundus photography, fluorescein and indocyanine green angiography, optical coherence tomography and optical coherence tomography angiography, facilitate in vivo examination of retinal and choroidal tissues, enabling early diagnosis, monitoring treatment response, and relapse detection. This approach is crucial to differentiate between active and inactive ocular disease, and guides clinicians in their decisional-tree during the patients’ follow-up. In this review, we summarized and compared the available literature on multimodal imaging data of M. chimaera infection and tuberculosis, emphasizing similarities and differences in imaging patterns between these two entities and highlighting the relevance of multimodal imaging in the management of the infections.
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Lu D, Zhang CH, Chen LJ, Jin PF, Feng XF, Zhou X, Huang WC, Wang J, Dai Y, Fu Y. Case report of the first cured patient with Mycobacterium Chimaera infection following cardiac valve replacement in the mainland of China. Antimicrob Resist Infect Control 2021; 10:141. [PMID: 34620232 PMCID: PMC8499553 DOI: 10.1186/s13756-021-01003-9] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/05/2020] [Accepted: 09/01/2021] [Indexed: 11/19/2022] Open
Abstract
Background Mycobacterium chimaera infections subsequent to cardiac surgery are related to contaminated heater-cooler devices, with high mortality. Nevertheless, few studies have been reported in Asia. Case presentation We described the case of a 55-year-old man with Mycobacterium chimaera infection following cardiac surgery in the mainland of China. He was diagnosed with endocarditis caused by Mycobacterium chimaera subsequent to open heart surgery. Metagenomic next-generation sequencing (mNGS) and 16S rRNA gene PCR analysis were used to identify potential pathogens. The patient underwent redo valve replacement surgery and received combination therapy with azithromycin, ethambutol, linezolid, and amikacin. No signs of relapse were observed during the 11-month follow-up visit. Conclusions This is the first documented case of Mycobacterium chimaera infection following cardiac surgery in the mainland of China and the first documented transnational imported case worldwide. Moreover, mNGS is a novel diagnostic technology that can guide antimicrobial therapy prior to obtaining fluid/tissue culture results for Mycobacterium chimaera, providing a new approach for the detection of potential Mycobacterium chimaera infection.
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Affiliation(s)
- Di Lu
- Department of Cardiac Surgery, First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325000, Zhejiang, People's Republic of China
| | - Chun-Hong Zhang
- Department of Pharmacy, First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, People's Republic of China
| | - Li-Jiang Chen
- Department of Clinical Laboratory, First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, People's Republic of China
| | - Pei-Feng Jin
- Department of Cardiac Surgery, First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325000, Zhejiang, People's Republic of China
| | - Xia-Fei Feng
- Cardiac Intensive Care Unit, First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, People's Republic of China
| | - Xi Zhou
- Cardiac Intensive Care Unit, First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, People's Republic of China
| | - Wei-Cong Huang
- Department of Cardiac Surgery, First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325000, Zhejiang, People's Republic of China
| | - Jue Wang
- Department of Cardiac Surgery, First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325000, Zhejiang, People's Republic of China
| | - Ying Dai
- Department of Pharmacy, First Affiliated Hospital, Wenzhou Medical University, Wenzhou, Zhejiang, People's Republic of China
| | - Yun Fu
- Department of Cardiac Surgery, First Affiliated Hospital, Wenzhou Medical University, Wenzhou, 325000, Zhejiang, People's Republic of China.
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Zweifel SA, Wiest MRJ, Toro MD, Hasler P, Maloca P, Hasse B, Khanna N, Rejdak R. Long-Term Clinical and Multimodal Imaging Findings in Patients with Disseminated Mycobacterium Chimaera Infection. J Clin Med 2021; 10:jcm10184178. [PMID: 34575289 PMCID: PMC8464780 DOI: 10.3390/jcm10184178] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/09/2021] [Revised: 09/10/2021] [Accepted: 09/13/2021] [Indexed: 11/16/2022] Open
Abstract
Background: To analyze long-term ophthalmic clinical and multimodal imaging findings of disseminated Mycobacterium (M.) chimaera infection after cardiothoracic surgery among the Swiss Cohort. Methods: Systemic and multimodal ophthalmic imaging and clinical findings including rate of recurrence were reviewed and correlated to a previously proposed classification system of choroidal lesions and classification of ocular disease. Main Outcomes Measures: long-term clinical and multimodal ocular imaging findings of M. chimaera. Results: Twelve patients suffering from systemic infection from M. chimaera were included. Mean age at the first ophthalmic examination was 59 years (range from 48 to 66 years). Mean duration of the follow-up was 22.63 ± 17.8 months. All patients presented with bilateral chorioretinal lesions at baseline; 5 patients had additional signs, including optic disc swelling (2), choroidal neovascularization (1), retinal neovascularization (1) and cilioretinal vascular occlusion (1). Four recurrence events after discontinuation or adjustment of the antibiotic treatment were observed. Progressive choroiditis was seen in 5 patients under treatment, 4 of them deceased. Conclusions: Expertise from ophthalmologists is not only relevant but also critical for the assessment of the adverse drug effect of antimycobacterial treatment along with monitoring therapeutic response and identifying recurrences.
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Affiliation(s)
- Sandrine Anne Zweifel
- Department of Ophthalmology, University Hospital Zurich, 8091 Zurich, Switzerland; (M.R.J.W.); (M.D.T.)
- Department of Ophthalmology, University of Zurich, 8091 Zurich, Switzerland
- Correspondence:
| | - Maximilian Robert Justus Wiest
- Department of Ophthalmology, University Hospital Zurich, 8091 Zurich, Switzerland; (M.R.J.W.); (M.D.T.)
- Department of Ophthalmology, University of Zurich, 8091 Zurich, Switzerland
| | - Mario Damiano Toro
- Department of Ophthalmology, University Hospital Zurich, 8091 Zurich, Switzerland; (M.R.J.W.); (M.D.T.)
- Department of Ophthalmology, University of Zurich, 8091 Zurich, Switzerland
- Department of General and Pediatric Ophthalmology, Medical University of Lublin, 20079 Lublin, Poland;
| | - Pascal Hasler
- Institute of Molecular and Clinical Ophthalmology Basel, 4023 Basel, Switzerland; (P.H.); (P.M.)
- Department of Ophthalmology, University Hospital Basel, 4023 Basel, Switzerland
| | - Peter Maloca
- Institute of Molecular and Clinical Ophthalmology Basel, 4023 Basel, Switzerland; (P.H.); (P.M.)
- Department of Ophthalmology, University Hospital Basel, 4023 Basel, Switzerland
| | - Barbara Hasse
- Division of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, 8091 Zurich, Switzerland;
| | - Nina Khanna
- Division of Infectious Diseases and Hospital Epidemiology, University Hospital Basel, 4023 Basel, Switzerland;
| | - Robert Rejdak
- Department of General and Pediatric Ophthalmology, Medical University of Lublin, 20079 Lublin, Poland;
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10
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Tan NY, Tarabochia AD, DeSimone DC, DeSimone CV, Wilson JW, Bagameri G, Bennett CE, Abu Saleh OM. Updated Experience of Mycobacterium chimaera Infection: Diagnosis and Management in a Tertiary Care Center. Open Forum Infect Dis 2021; 8:ofab348. [PMID: 34377729 PMCID: PMC8339283 DOI: 10.1093/ofid/ofab348] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/13/2021] [Accepted: 06/29/2021] [Indexed: 02/04/2023] Open
Abstract
BACKGROUND Despite safety communications from the Food and Drug Administration (FDA) regarding the outbreak of Mycobacterium chimaera infections (MCIs) from contaminated heater-cooler devices, new cases continue to be identified. METHODS We retrospectively reviewed confirmed cases of MCI that were managed at Mayo Clinic sites (Arizona, Florida, and Minnesota) from 09/2015 to 01/2021. Clinical histories including prior cardiovascular surgery were recorded. Diagnostic workup including ophthalmologic examination, imaging, and laboratory testing was reviewed. Treatment and survival outcomes on follow-up were obtained. RESULTS Twelve patients with MCI were included. All patients had aortic valve or graft replacement. Five patients had their surgical procedures following the 10/15/2015 FDA safety communication. The mean time from surgery to symptom onset (range) was 32 (13-73) months. Ten of 11 patients who underwent ophthalmologic examination had chorioretinal abnormalities. Three patients who underwent microbial cell-free deoxyribonucleic acid sequencing tested positive for M. chimaera, which was subsequently confirmed with blood culture growth. Echocardiography and positron emission tomography/computed tomography (PET/CT) revealed evidence of prosthetic valve/graft infection in 7/12 (58.3%) and 6/10 (60.0%) of cases, respectively. Seven patients (58.3%) underwent redo cardiovascular surgery. Of these, 1 patient died 2 days postdischarge, 1 experienced spinal osteomyelitis relapse, and another had interval prosthetic valve fluorodeoxyglucose (FDG) uptake on PET/CT suspicious for recurrent infection. Among 4 patients on medical therapy only, 3 expired or transitioned to hospice during follow-up. CONCLUSIONS MCI continues to occur despite the FDA communications. Incorporation of ophthalmologic examination and use of advanced tools may improve MCI diagnosis. The mortality in these patients is high even with aggressive surgical/medical management.
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Affiliation(s)
- Nicholas Y Tan
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Alex D Tarabochia
- Division of Internal Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Daniel C DeSimone
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA
- Department of Infectious Diseases, Mayo Clinic, Rochester, Minnesota, USA
| | | | - John W Wilson
- Department of Infectious Diseases, Mayo Clinic, Rochester, Minnesota, USA
| | - Gabor Bagameri
- Department of Cardiovascular Surgery, Mayo Clinic, Rochester, Minnesota, USA
| | - Courtney E Bennett
- Department of Cardiovascular Medicine, Mayo Clinic, Rochester, Minnesota, USA
| | - Omar M Abu Saleh
- Department of Infectious Diseases, Mayo Clinic, Rochester, Minnesota, USA
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11
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Bayer AS, Chambers HF. Prosthetic Valve Endocarditis Diagnosis and Management- New Paradigm Shift Narratives. Clin Infect Dis 2021; 72:1687-1692. [PMID: 33458755 DOI: 10.1093/cid/ciab036] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/21/2020] [Indexed: 12/12/2022] Open
Abstract
Prosthetic valve endocarditis (PVE) is a major infectious disease problem due to the increasing numbers of patients undergoing valve replacement surgery. PVE can present diagnostic difficulties echocardiographically, especially when complicating transvascular placement techniques. Moreover, outbreaks of unusual PVE pathogens, such as Mycobacterium chimaera, have presented major diagnostic and therapeutic dilemmas.
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Affiliation(s)
- Arnold S Bayer
- The Department of Medicine, David Geffen School of Medicine at UCLA, Los Angeles, California, USA.,The Lundquist Institute for Biomedical Innovation at Harbor-UCLA Medical Center, Torrance, California, USA
| | - Henry F Chambers
- The Department of Medicine, Division of HIV, Infectious Diseases and Global Medicine, Zuckerberg San Francisco General Hospital, University of California, San Francisco School of Medicine, San Francisco, California, USA
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12
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Natanti A, Palpacelli M, Valsecchi M, Tagliabracci A, Pesaresi M. Mycobacterium chimaera: a report of 2 new cases and literature review. Int J Legal Med 2021; 135:2667-2679. [PMID: 34185152 PMCID: PMC8523431 DOI: 10.1007/s00414-021-02630-y] [Citation(s) in RCA: 3] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/30/2020] [Accepted: 06/04/2021] [Indexed: 11/30/2022]
Abstract
Mycobacterium chimaera is a non-tuberculous mycobacterium, member of the Mycobacterium avium complex (MAC), which has become a global public health concern due to infection following cardiac surgery performed with contaminated heater-cooler units. M. chimaera infection is characterized by a long latency, non-specific signs and symptoms and high mortality rates. Thus, the diagnosis is still challenging both for forensic pathologists and for clinicians. Clinical manifestations of M. chimaera infection include endocarditis, hepatitis, nephritis, encephalitis and chorioretinitis. A constant histopathologic finding is the presence of non-caseating granulomas, with multinucleated giant cells and histiocytes. Hereby, we present two cases of fatal disseminated M. chimaera infection following aortic valve surgery reporting clinical history and post-mortem findings. Further, we provide a brief overview of the literature with a special focus on histopathological characteristics of M. chimaera infection. The aim of this article is to provide a complete synopsis of histopathological characteristics useful for forensic pathologists.
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Affiliation(s)
- Alice Natanti
- Section of Legal Medicine, Department of Excellence SBSP-Biomedical Sciences and Public Health, Università Politecnica delle Marche of Ancona, Conca 71, Street, Ancona, Italy
| | - Marco Palpacelli
- Section of Legal Medicine, Department of Excellence SBSP-Biomedical Sciences and Public Health, Università Politecnica delle Marche of Ancona, Conca 71, Street, Ancona, Italy
| | - Marco Valsecchi
- SOD of Legal Medicine, Azienda Ospedaliero Universitaria Ospedali Riuniti "Umberto I G M Lancisi G Salesi", Ancona, Italy
| | - Adriano Tagliabracci
- Section of Legal Medicine, Department of Excellence SBSP-Biomedical Sciences and Public Health, Università Politecnica delle Marche of Ancona, Conca 71, Street, Ancona, Italy
| | - Mauro Pesaresi
- Section of Legal Medicine, Department of Excellence SBSP-Biomedical Sciences and Public Health, Università Politecnica delle Marche of Ancona, Conca 71, Street, Ancona, Italy.
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13
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Ma J, Ruzicki JL, Carrell NW, Baker CF. Ocular manifestations of disseminated Mycobacterium chimaera infection after cardiothoracic surgery. Can J Ophthalmol 2021; 57:90-97. [PMID: 33775595 DOI: 10.1016/j.jcjo.2021.02.032] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/18/2021] [Revised: 02/16/2021] [Accepted: 02/18/2021] [Indexed: 11/28/2022]
Abstract
OBJECTIVE To describe the ocular manifestations of disseminated Mycobacterium chimaera infection after cardiothoracic surgery. DESIGN Retrospective, observational case series. PARTICIPANTS Patients with disseminated M. chimaera infection treated at the University of Alberta Hospital and Royal Alexandra Hospital in Edmonton, Alberta, Canada. METHODS Seven patients (14 eyes) with systemic M. chimaera infection after aortic graft and/or valvular surgeries were reviewed for ocular involvement. Cases were identified based on histopathologic analysis of cardiac tissue, repeat positive mycobacterial blood cultures, and cerebrospinal fluid analysis. Clinical ocular findings, fundus autofluorescence, fluorescein angiography, spectral-domain optical coherence tomography (SD-OCT), and autopsy results are described. RESULTS The mean age of our patients was 63 years (range, 22-76 years). Aortic graft and/or valvular surgeries were performed between June 2015 and April 2016. The mean duration from surgery to diagnosis of infection was 27 months (range, 19-36 months). All patients exhibited white-yellowish choroidal lesions. Bilateral, multifocal choroiditis was observed in 6 patients (12 eyes), who died of disseminated M. chimaera infection despite aggressive, multiagent antimicrobial therapy. One patient had a solitary, white-yellow choroidal lesion in the left eye only. Choroidal lesions were hyperfluorescent on late-phase fluorescein angiography and corresponded to localized choroidal thickening and retinal elevation on SD-OCT. CONCLUSIONS M. chimaera infection after cardiothoracic surgery can cause life-threatening disease involving multiple organ systems. Ocular involvement is an important and possibly early clinical finding, with good correlation to systemic disease severity. Ophthalmological assessment and multimodal imaging may aid in early diagnosis and can be used to monitor disease progression.
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Affiliation(s)
- Jingyi Ma
- Faculty of Medicine & Dentistry, University of Alberta, Edmonton, Alta
| | - Jessica L Ruzicki
- Department of Ophthalmology and Visual Sciences, University of Alberta, Edmonton, Alta
| | - Nathan W Carrell
- Department of Ophthalmology and Visual Sciences, University of Alberta, Edmonton, Alta
| | - Chad F Baker
- Department of Ophthalmology and Visual Sciences, University of Alberta, Edmonton, Alta..
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14
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Deaner JD, Lowder CY, Pichi F, Gordon S, Shrestha N, Emami-Naeini P, Sharma S, Srivastava SK. Clinical and Multimodal Imaging Findings in Disseminated Mycobacterium Chimaera. ACTA ACUST UNITED AC 2021; 5:184-194. [DOI: 10.1016/j.oret.2020.06.030] [Citation(s) in RCA: 4] [Impact Index Per Article: 1.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/09/2020] [Revised: 05/22/2020] [Accepted: 06/25/2020] [Indexed: 10/23/2022]
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15
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Lau D, Cooper R, Chen J, Sim VL, McCombe JA, Tyrrell GJ, Bhargava R, Adam B, Chapman E, Croxen MA, Garady C, Antonation K, van Landeghem FKH, Ip S, Saxinger L. Mycobacterium chimaera Encephalitis Following Cardiac Surgery: A New Syndrome. Clin Infect Dis 2021; 70:692-695. [PMID: 31247065 DOI: 10.1093/cid/ciz497] [Citation(s) in RCA: 6] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/14/2018] [Accepted: 06/17/2019] [Indexed: 11/14/2022] Open
Abstract
We report the cases of 3 patients with fatal, disseminated Mycobacterium chimaera infections following cardiac surgeries. Progressive neurocognitive decline and death were explained by active granulomatous encephalitis, with widespread involvement of other organs. This syndrome is clinically elusive and, thus, may have caused deaths in prior reported series.
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Affiliation(s)
- Darren Lau
- Division of General Internal Medicine, University of Alberta, Edmonton, Canada
| | - Ryan Cooper
- Division of Infectious Diseases, University of Alberta, Edmonton, Canada
| | - Justin Chen
- Division of Infectious Diseases, University of Alberta, Edmonton, Canada
| | - Valerie L Sim
- Division of Neurology, Department of Medicine, University of Alberta, Edmonton, Canada
| | - Jennifer A McCombe
- Division of Neurology, Department of Medicine, University of Alberta, Edmonton, Canada
| | - Gregory J Tyrrell
- Provincial Laboratory for Public Health, University of Alberta, Edmonton, Canada.,Division of Diagnostic and Applied Microbiology, Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Canada
| | - Ravi Bhargava
- Department of Radiology and Diagnostic Imaging, University of Alberta, Edmonton, Canada
| | - Benjamin Adam
- Division of Anatomical Pathology, Department of Laboratory Medicine and Pathology, University of Alberta, Canada
| | - Erin Chapman
- Division of Anatomical Pathology, Department of Laboratory Medicine and Pathology, University of Alberta, Canada
| | - Matthew A Croxen
- Provincial Laboratory for Public Health, University of Alberta, Edmonton, Canada.,Division of Diagnostic and Applied Microbiology, Department of Laboratory Medicine and Pathology, University of Alberta, Edmonton, Canada
| | - Cherif Garady
- Division of Anatomical Pathology, Department of Laboratory Medicine and Pathology, University of Alberta, Canada
| | - Kym Antonation
- National Microbiology Laboratory, Winnipeg, Manitoba, University of Alberta, Edmonton, Canada
| | - Frank K H van Landeghem
- Division of Anatomical Pathology, Department of Laboratory Medicine and Pathology, University of Alberta, Canada.,Neuroscience and Mental Health Institute, University of Alberta, Edmonton, Canada
| | - Shannon Ip
- Division of General Internal Medicine, University of Alberta, Edmonton, Canada
| | - Lynora Saxinger
- Division of Infectious Diseases, University of Alberta, Edmonton, Canada
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16
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Bolcato M, Rodriguez D, Aprile A. Risk Management in the New Frontier of Professional Liability for Nosocomial Infection: Review of the Literature on Mycobacterium Chimaera. INTERNATIONAL JOURNAL OF ENVIRONMENTAL RESEARCH AND PUBLIC HEALTH 2020; 17:ijerph17197328. [PMID: 33036499 PMCID: PMC7579562 DOI: 10.3390/ijerph17197328] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 08/18/2020] [Revised: 09/30/2020] [Accepted: 10/03/2020] [Indexed: 12/19/2022]
Abstract
Background: Mycobacterium chimaera (MC) is of recent origin and belongs to the large family of non-tuberculous mycobacteria. In recent years, it has shown a high infectious capacity via the aerosol produced by operating room equipment, such as heater–cooler units (HCU). The infection has a long latent period and high mortality rate. Genetic and epidemiological studies have shown that there is a clear link between the infection and a specific HCU model manufactured by LivaNova/Sorin. There is, therefore, a strong possibility that contamination occurs during device construction. The objective of this article is to describe the characteristics of this particular infection in view of the medico–legal implications on professional liability, specifically focusing on current evidence regarding contamination prevention. Methods: we have analyzed the clinical characteristics and data from the autopsic investigations performed on a patient who died as a result of MC infection, in addition to analyzing all pertinent recommendation documents available internationally. We searched for all articles in the literature available on MEDLINE between 1995 and 30 July 2020, using the search words “Mycobacterium chimaera”. We then analyzed those articles and reported only those that provide useful information regarding prevention techniques for containing dissemination and contamination. Results: the literature review produced 169 results that highlight the need to develop systems to mitigate and eliminate the risk of MC infection in operating rooms such as physical containment measures, e.g. device replacement, use of safe water, providing patients with information, and training healthcare professionals. Conclusions: from a medico–legal viewpoint, this particular situation represents a new frontier of professional liability, which includes manufacturers of electromedical equipment. In order to comprehend the true extent of this silent global epidemic, the development of an organic, preventative monitoring system is essential.
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17
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Mycobacterium Chimaera: Clinical and medico-legal considerations starting from a case of sudden acoustic damage. Leg Med (Tokyo) 2020; 47:101747. [PMID: 32673991 DOI: 10.1016/j.legalmed.2020.101747] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2020] [Revised: 06/16/2020] [Accepted: 06/29/2020] [Indexed: 11/22/2022]
Abstract
Mycobacterium Chimaera is a microorganism that can cause nosocomial infections particularly in patients undergoing cardiac surgery. The specific case presented herein shows an original clinical presentation of the infection: sudden unilateral deafness as a result of septic embolization. Medico-legal experts appointed by the court in a civil liability dispute analyzed the case and submitted their expert opinion. This article analyzes the peculiar and innovative aspect of professional liability that can be attributed to the healthcare facility and the manufacturer of the equipment used in the operating room from a medical-legal point of view.
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18
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Lecorche E, Pean de Ponfilly G, Mougari F, Benmansour H, Poisnel E, Janvier F, Cambau E. Disseminated Mycobacterium chimaera Following Open-Heart Surgery, the Heater-Cooler Unit Worldwide Outbreak: Case Report and Minireview. Front Med (Lausanne) 2020; 7:243. [PMID: 32613002 PMCID: PMC7308416 DOI: 10.3389/fmed.2020.00243] [Citation(s) in RCA: 8] [Impact Index Per Article: 2.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/07/2019] [Accepted: 05/07/2020] [Indexed: 12/17/2022] Open
Abstract
Invasive cardiovascular infections by Mycobacterium chimaera associated with open-heart surgery have been reported worldwide since 2013. Here, we report a case of a 61 year old man, without any other particular medical background, who underwent cardiac surgery for replacing part of the ascending aorta by a bio-prosthetic graft. Eighteen months later, the patient was painful at the lower back with fever. A pyogenic vertebral osteomyelitis due to M. chimaera associated to graft infection was diagnosed after 6 months of sub-acute infection. The patient presented a disseminated disease with cerebral lesions, chorioretinitis, and chronic renal failure. Despite adequate antimicrobial treatment and graft explantation, the patient died after 6 years. We reviewed the literature on M. chimaera infections associated with open-heart surgery. The worldwide outbreak has been explained by airborne bioaerosol generated by the 3T heater–cooler unit (HCU) used during cardiac by-pass surgical procedures. These infections are difficult to diagnose because of a long latency period (up to several years), with no specific symptoms and a highly specialized microbiological diagnosis. The treatment is based on antibiotics and surgery. These infections are also difficult to treat, since the mortality rate is high around 50%. Prevention is necessary by modifying the use of HCUs in operating rooms.
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Affiliation(s)
- Emmanuel Lecorche
- Université de Paris, IAME, INSERM, UMR1137, UFR de Médecine, Paris, France.,CNR-MyRMA, Centre National de Reference pour les Mycobactéries et les Antituberculeux, APHP, Paris, France.,APHP, Hôpital Lariboisière, Service de Microbiologie, Paris, France
| | | | - Faiza Mougari
- Université de Paris, IAME, INSERM, UMR1137, UFR de Médecine, Paris, France.,CNR-MyRMA, Centre National de Reference pour les Mycobactéries et les Antituberculeux, APHP, Paris, France.,APHP, Hôpital Lariboisière, Service de Microbiologie, Paris, France
| | - Hanaa Benmansour
- Université de Paris, IAME, INSERM, UMR1137, UFR de Médecine, Paris, France.,CNR-MyRMA, Centre National de Reference pour les Mycobactéries et les Antituberculeux, APHP, Paris, France.,APHP, Hôpital Lariboisière, Service de Microbiologie, Paris, France
| | - Elodie Poisnel
- Service de Medecine Interne, Hôpital d'Instruction des Armées Sainte Anne, Toulon, France
| | - Frederic Janvier
- Service de microbiologie, Hôpital d'Instruction des Armées Sainte Anne, Toulon, France.,Ecole du Val-de-Grâce, Paris, France
| | - Emmanuelle Cambau
- Université de Paris, IAME, INSERM, UMR1137, UFR de Médecine, Paris, France.,CNR-MyRMA, Centre National de Reference pour les Mycobactéries et les Antituberculeux, APHP, Paris, France.,APHP, Hôpital Lariboisière, Service de Microbiologie, Paris, France
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19
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Kasperbauer SH, Daley CL. Mycobacterium chimaera Infections Related to the Heater-Cooler Unit Outbreak: A Guide to Diagnosis and Management. Clin Infect Dis 2020; 68:1244-1250. [PMID: 30371755 DOI: 10.1093/cid/ciy789] [Citation(s) in RCA: 32] [Impact Index Per Article: 8.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/24/2018] [Accepted: 10/06/2018] [Indexed: 01/01/2023] Open
Abstract
We are in the midst of a global outbreak of Mycobacterium chimaera infections related to a point source contamination of a widely used surgical device, the 3T heater-cooler unit. More than 250000 heart bypass procedures using heater-cooler devices are performed in the United States every year. It is estimated that 60% of these operations use the device associated with this outbreak. Most of the reported cases present with a disseminated infection that is striking in both the latency of presentation and the high mortality. The diagnosis can be elusive due to intermittent bacteremia and normal echocardiography. Therapy includes several months of antibiotics, and surgical intervention appears to be critical for successful outcomes. Here, we review diagnostic methods and treatment options to guide clinicians in the management of this complicated infection.
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Affiliation(s)
- Shannon H Kasperbauer
- Department of Medicine, National Jewish Health, Denver.,University of Colorado, Aurora
| | - Charles L Daley
- Department of Medicine, National Jewish Health, Denver.,University of Colorado, Aurora
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20
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MULTIMODAL IMAGING OF CHOROIDAL LESIONS IN DISSEMINATED MYCOBACTERIUM CHIMAERA INFECTION AFTER CARDIOTHORACIC SURGERY. Retina 2020; 39:452-464. [PMID: 29206759 DOI: 10.1097/iae.0000000000001991] [Citation(s) in RCA: 11] [Impact Index Per Article: 2.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE To explore morphologic characteristics of choroidal lesions in patients with disseminated Mycobacterium chimaera infection subsequent to open-heart surgery. METHODS Nine patients (18 eyes) with systemic M. chimaera infection were reviewed. Activity of choroidal lesions were evaluated using biomicroscopy, fundus autofluorescence, enhanced depth imaging optical coherence tomography, fluorescein angiography/indocyanine green angiography, and optical coherence tomography angiography. Relationships of choroidal findings to systemic disease activity were sought. RESULTS All 9 male patients, aged between 49 and 66 years, were diagnosed with endocarditis and/or aortic graft infection. Mean follow-up was 17.6 months. Four patients had only inactive lesions (mild disease). In all five patients (10 eyes) with progressive ocular disease, indocyanine green angiography was superior to other tests for revealing new lesions and active lesions correlated with hyporeflective choroidal areas on enhanced depth imaging optical coherence tomography. One eye with a large choroidal granuloma developed choroidal neovascularization. Optical coherence tomography angiography showed areas with reduced perfusion at the inner choroid. All 5 patients with progressive ocular disease had evidence of systemic disease activity within ±6 weeks' duration. CONCLUSION Choroidal manifestation of disseminated M. chimaera infection indicates systemic disease activity. Multimodal imaging is suitable to recognize progressive ocular disease. We propose ophthalmologic screening examinations for patients with M. chimaera infection.
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21
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Colucciello M. Mycobacterium chimaera chorioretinitis as a biomarker of systemic disease activity following nosocomial acquisition during cardiopulmonary bypass. Postgrad Med 2019; 132:167-171. [PMID: 31766930 DOI: 10.1080/00325481.2019.1697545] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/25/2022]
Abstract
Objectives: To understand the role of ophthalmoscopic examination (dilated retina examination and widefield fundus photography) in the diagnosis and management of nosocomial acquisition of Mycobacterium chimaera following open heart surgery with cardiopulmonary bypass utilizing a heater-cooler unit, an entity that is associated with >50% mortality during the worldwide outbreak that has occurred since 2013.Methods: Case report with review of previous cases.Results: Signature Mycobacterium chimaera chorioretinal lesions can be used as a diagnostic sign and a biomarker for assessment of treatment efficacy.Conclusions: Ophthalmologic examination can play a key role in diagnosis and management of systemic Mycobacterium chimaera following cardiopulmonary bypass; such examinations may yield earlier diagnosis, diminishing mortality rates.
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Affiliation(s)
- Michael Colucciello
- Clinical Associate, University of Pennsylvania School of Medicine; Retina Specialist, Vantage Eye Care, South Jersey Eye Physicians Division, Moorestown, NJ, USA
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22
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Abstract
Mycobacterium chimaera was identified as a species within the Mycobacterium avium complex in 2004. Until recently, it was predominantly seen in immunocompromised patients. In 2015, an outbreak of disseminated M. chimaera disease was described in European patients after undergoing open-heart surgery in which contaminated heater-cooler water units were used. Using whole genomic sequencing and phylogenetic analysis, investigators found a highly clonal outbreak from the German manufacturing site of the heater-cooler water units. This outbreak has now proven to be world-wide. Patients present with fever, fatigue, and weight loss months to many years after surgery. They are found to have systemic manifestations, including endocarditis, pancytopenia, renal dysfunction, chorioretinitis, and hepatitis. Preliminary reports suggest a high mortality rate despite aggressive treatment. In some patients, the predominant laboratory abnormalities are elevations in liver function tests, leading to diagnostic hepatobiliary work-ups, including liver biopsy. The pathologic changes in the liver have not yet been described. Herein, we report the clinicopathologic findings of the largest series of M. chimaera liver disease in the United States to date: 7 cases within a large, multihospital health care network. Five (71%) patients died of disease, despite aggressive treatment. Liver function test abnormalities were predominantly biliary: mean values of alkaline phosphate 288 U/L, aspartate aminotransferase 79 U/L, alanine aminotransferase 64 U/L. All 7 biopsies showed a consistent and characteristic dual pattern of injury: small, ill-formed collections of sinusoidal histiocytes with rare multinucleated giant cells, and scattered architectural changes of venous outflow obstruction. Two (29%) cases showed mild pericellular fibrosis. Nodular regenerative hyperplasia was seen in 2 (29%) cases, consistent with a sinusoidal/venous obstructive pattern of injury. We postulate that the sinusoidal location of the granulomas contributes to the venous obstructive changes. Recognition of this characteristic dual pattern of injury can allow pathologists to suggest the diagnosis and prompt the appropriate diagnostic and therapeutic interventions.
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23
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Hasse B, Hannan MM, Keller PM, Maurer FP, Sommerstein R, Mertz D, Wagner D, Fernández-Hidalgo N, Nomura J, Manfrin V, Bettex D, Hernandez Conte A, Durante-Mangoni E, Tang THC, Stuart RL, Lundgren J, Gordon S, Jarashow MC, Schreiber PW, Niemann S, Kohl TA, Daley CL, Stewardson AJ, Whitener CJ, Perkins K, Plachouras D, Lamagni T, Chand M, Freiberger T, Zweifel S, Sander P, Schulthess B, Scriven JE, Sax H, van Ingen J, Mestres CA, Diekema D, Brown-Elliott BA, Wallace RJ, Baddour LM, Miro JM, Hoen B, Athan E, Bayer A, Barsic B, Corey GR, Chu VH, Durack DT, Fortes CQ, Fowler V, Hoen B, Krachmer AW, Durante-Magnoni E, Miro JM, Wilson WR. International Society of Cardiovascular Infectious Diseases Guidelines for the Diagnosis, Treatment and Prevention of Disseminated Mycobacterium chimaera Infection Following Cardiac Surgery with Cardiopulmonary Bypass. J Hosp Infect 2019; 104:214-235. [PMID: 31715282 DOI: 10.1016/j.jhin.2019.10.009] [Citation(s) in RCA: 44] [Impact Index Per Article: 8.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/20/2019] [Accepted: 10/08/2019] [Indexed: 02/09/2023]
Abstract
Mycobacterial infection-related morbidity and mortality in patients following cardiopulmonary bypass surgery is high and there is a growing need for a consensus-based expert opinion to provide international guidance for diagnosing, preventing and treating in these patients. In this document the International Society for Cardiovascular Infectious Diseases (ISCVID) covers aspects of prevention (field of hospital epidemiology), clinical management (infectious disease specialists, cardiac surgeons, ophthalmologists, others), laboratory diagnostics (microbiologists, molecular diagnostics), device management (perfusionists, cardiac surgeons) and public health aspects.
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Affiliation(s)
- B Hasse
- Division of Infectious Diseases and Hospital Epidemiology, University Hospital and University of Zurich, Switzerland.
| | - M M Hannan
- Clinical Microbiology, Mater Misericordiae University Hospital, Dublin, Ireland
| | - P M Keller
- Institute for Infectious Diseases, University of Bern, Bern, Switzerland
| | - F P Maurer
- Diagnostic Mycobacteriology Group, National and WHO Supranational Reference Center for Mycobacteria, Research Center, Borstel, Germany
| | - R Sommerstein
- Department of Infectious Diseases, Bern University Hospital, University of Bern, Bern, Switzerland
| | - D Mertz
- Departments of Medicine, Health Research Methods, Evidence and Impact, and Pathology and Molecular Medicine, McMaster University, Hamilton, ON, Canada
| | - D Wagner
- Department of Internal Medicine II, Division of Infectious Diseases, Medical Center - University of Freiburg, Freiburg i.Br, Germany
| | - N Fernández-Hidalgo
- Servei de Malalties Infeccioses, Hospital Universitari Vall d'Hebron, Universitat Autònoma de Barcelona, Barcelona, Spain
| | - J Nomura
- Kaiser Permanente Infectious Diseases, Los Angeles Medical Center, CA, USA
| | - V Manfrin
- Infectious and Tropical Diseases Department, San Bortolo Hospital, Vincenca, Italy
| | - D Bettex
- Institute of Anesthesiology, University Hospital Zurich, Switzerland
| | - A Hernandez Conte
- Department of Anaesthesiology, Kaiser Permanente, Los Angeles Medical Center, CA, USA
| | - E Durante-Mangoni
- Infectious and Transplant Medicine, University of Campania 'L. Vanvitelli', Monaldi Hospital, Naples, Italy
| | - T H-C Tang
- Division of Infectious Diseases, Department of Medicine, Queen Elizabeth Hospital, Hong Kong, China
| | - R L Stuart
- Monash Infectious Diseases, Monash Health, Australia
| | - J Lundgren
- Department of Infectious Diseases, Rigshospitalet, University of Copenhagen, Denmark
| | - S Gordon
- Department of Infectious Diseases, Cleveland Clinic, OH, USA
| | - M C Jarashow
- Acute Communicable Disease Control, Los Angeles Department of Public Health, LA, USA
| | - P W Schreiber
- Division of Infectious Diseases and Hospital Epidemiology, University Hospital and University of Zurich, Switzerland
| | - S Niemann
- Molecular and Experimental Mycobacteriology Group, Research Center Borstel, Borstel, Germany and German Center for Infection Research (DZIF), partner site Hamburg - Lübeck - Borstel - Riems, Borstel, Germany
| | - T A Kohl
- Molecular and Experimental Mycobacteriology Group, Research Center Borstel, Borstel, Germany and German Center for Infection Research (DZIF), partner site Hamburg - Lübeck - Borstel - Riems, Borstel, Germany
| | - C L Daley
- Division of Mycobacterial and Respiratory Infections, National Jewish Health, Denver, CO, USA
| | - A J Stewardson
- Department of Infectious Diseases, The Alfred and Central Clinical School, Monash University, Melbourne, Australia
| | - C J Whitener
- Penn State Health, Milton S. Hershey Medical Center, Hershey, PA, USA
| | - K Perkins
- Division of Healthcare Quality Promotion, Centers for Disease Control and Prevention, Atlanta, USA
| | - D Plachouras
- Healthcare-associated Infections, European Centre for Disease Prevention and Control (ECDC), Solna, Sweden
| | - T Lamagni
- National Infection Service, Public Health England, London, UK
| | - M Chand
- National Infection Service, Public Health England, London, UK; Guy's and St Thomas' NHS Foundation Trust, Imperial College London, UK
| | - T Freiberger
- Centre for Cardiovascular Surgery and Transplantation, Brno, Faculty of Medicine, Masaryk University, Brno, Czech Republic
| | - S Zweifel
- Ophthalmology Unit, University of Zurich, Switzerland
| | - P Sander
- National Center for Mycobacteria, Zurich, Switzerland, Institute of Medical Microbiology, University of Zurich, Zurich, Switzerland
| | - B Schulthess
- Institute of Medical Microbiology, University of Zurich, Zurich, Switzerland
| | - J E Scriven
- Department of Infection and Tropical Medicine, University Hospitals Birmingham, Birmingham, UK
| | - H Sax
- Division of Infectious Diseases and Hospital Epidemiology, University Hospital and University of Zurich, Switzerland
| | - J van Ingen
- Department of Medical Microbiology, Radboud University Medical Center, Nijmegen, the Netherlands
| | - C A Mestres
- Clinic for Cardiovascular Surgery, University Hospital and University of Zurich, Switzerland
| | - D Diekema
- Division of Infectious Diseases, University of Iowa, Carver College of Medicine, IA, USA
| | - B A Brown-Elliott
- Department of Microbiology, The University of Texas Health Science Center at Tyler, Tyler, TX, USA
| | - R J Wallace
- Department of Microbiology, The University of Texas Health Science Center at Tyler, Tyler, TX, USA
| | - L M Baddour
- Division of Infectious Diseases, Departments of Medicine and Cardiovascular Diseases, Mayo Clinic, College of Medicine and Science, Rochester, MN, USA
| | - J M Miro
- Infectious Diseases Service at the Hospital Clinic-IDIBAPS, University of Barcelona, Barcelona, Spain
| | - B Hoen
- Department of Infectious Diseases and Tropical Medicine, University Medical Center of Nancy, Vandoeuvre Cedex, France.
| | | | | | - E Athan
- Infectious Diseases Department at Barwon Health, University of Melbourne and Deakin University, Australia
| | - A Bayer
- Geffen School of Medicine at UCLA Senior Investigator - LA Biomedical Research Institute at Harbor-UCLA, USA
| | - B Barsic
- Department for Infectious Diseases, School of Medicine, University of Zagreb, Croatia
| | - G R Corey
- Duke University Medical Center, Hubert-Yeargan Center for Global Health, Department of Medicine, Duke University Medical Center, Durham, NC, USA
| | - V H Chu
- Division of Infectious Diseases, Duke University Medical Center, Durham, NC, USA
| | - D T Durack
- Division of Infectious Diseases, Duke University Medical Center, Durham, NC, USA
| | - C Q Fortes
- Division of Infectious Diseases, Universidade Federal do Rio de Janeiro, Rio de Janeiro, Brazil
| | - V Fowler
- Departments of Medicine and Molecular Genetics & Microbiology, Duke University Medical Center, Durham, NC, USA
| | - B Hoen
- Department of Infectious Diseases and Tropical Medicine, University Medical Center of Nancy, Vandoeuvre Cedex, France
| | - A W Krachmer
- Harvard Medical School, Division of Infectious Diseases at the Beth Israel Deaconess Medical Center, Boston, MA, USA
| | - E Durante-Magnoni
- Infectious and Transplant Medicine of the 'V. Monaldi' Teaching Hospital in Naples, University of Campania 'L. Vanvitelli', Italy
| | - J M Miro
- Infectious Diseases at the Hospital Clinic-IDIBAPS, University of Barcelona, Barcelona, Spain
| | - W R Wilson
- Division of Infectious Diseases, Department of Internal Medicine, Mayo Clinic, College of Medicine and Science, Rochester, MN, USA
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24
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Campins Martí M, Borrás Bermejo B, Armadans Gil L. Infecciones por Mycobacterium chimaera y cirugía cardíaca. Un problema no resuelto. Med Clin (Barc) 2019; 152:317-323. [DOI: 10.1016/j.medcli.2018.10.013] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/03/2018] [Revised: 10/10/2018] [Accepted: 10/14/2018] [Indexed: 12/14/2022]
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25
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Marra AR, Diekema DJ, Edmond MB. Mycobacterium chimaera Infections Associated With Contaminated Heater-Cooler Devices for Cardiac Surgery: Outbreak Management. Clin Infect Dis 2018; 65:669-674. [PMID: 28430899 DOI: 10.1093/cid/cix368] [Citation(s) in RCA: 30] [Impact Index Per Article: 5.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/27/2017] [Accepted: 04/18/2017] [Indexed: 12/17/2022] Open
Abstract
The global outbreak of Mycobacterium chimaera infections associated with heater-cooler devices (HCDs) presents several important, unique challenges for the infection prevention community. The primary focus of this article is to assist hospitals in establishing a rapid response for identification, notification, and evaluation of exposed patients, and management of HCDs with regard to placement and containment, environmental culturing, and disinfection.
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Affiliation(s)
- Alexandre R Marra
- Office of Clinical Quality, Safety and Performance Improvement, University of Iowa Hospitals and Clinics, Iowa City.,Division of Medical Practice, Hospital Israelita Albert Einstein, São Paulo, Brazil
| | - Daniel J Diekema
- Office of Clinical Quality, Safety and Performance Improvement, University of Iowa Hospitals and Clinics, Iowa City.,Division of Medical Microbiology, Department of Pathology, University of Iowa Carver College of Medicine, Iowa City.,Division of Infectious Diseases, Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City
| | - Michael B Edmond
- Office of Clinical Quality, Safety and Performance Improvement, University of Iowa Hospitals and Clinics, Iowa City.,Division of Infectious Diseases, Department of Internal Medicine, University of Iowa Carver College of Medicine, Iowa City
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26
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Scriven JE, Scobie A, Verlander NQ, Houston A, Collyns T, Cajic V, Kon OM, Mitchell T, Rahama O, Robinson A, Withama S, Wilson P, Maxwell D, Agranoff D, Davies E, Llewelyn M, Soo SS, Sahota A, Cooper MA, Hunter M, Tomlins J, Tiberi S, Kendall S, Dedicoat M, Alexander E, Fenech T, Zambon M, Lamagni T, Smith EG, Chand M. Mycobacterium chimaera infection following cardiac surgery in the United Kingdom: clinical features and outcome of the first 30 cases. Clin Microbiol Infect 2018; 24:1164-1170. [PMID: 29803845 DOI: 10.1016/j.cmi.2018.04.027] [Citation(s) in RCA: 46] [Impact Index Per Article: 7.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/05/2018] [Revised: 04/22/2018] [Accepted: 04/24/2018] [Indexed: 12/25/2022]
Abstract
OBJECTIVES Mycobacterium chimaera infection following cardiac surgery, due to contaminated cardiopulmonary bypass heater-cooler units, has been reported worldwide. However, the spectrum of clinical disease remains poorly understood. To address this, we report the clinical and laboratory features, treatment and outcome of the first 30 UK cases. METHODS Case note review was performed for cases identified retrospectively through outbreak investigations and prospectively through ongoing surveillance. Case definition was Mycobacterium chimaera detected in any clinical specimen, history of cardiothoracic surgery with cardiopulmonary bypass, and compatible clinical presentation. RESULTS Thirty patients were identified (28 with prosthetic material) exhibiting a spectrum of disease including prosthetic valve endocarditis (14/30), sternal wound infection (2/30), aortic graft infection (4/30) and disseminated (non-cardiac) disease (10/30). Patients presented a median of 14 months post surgery (maximum 5 years) most commonly complaining of fever and weight loss. Investigations frequently revealed lymphopenia, thrombocytopenia, liver cholestasis and non-necrotizing granulomatous inflammation. Diagnostic sensitivity for a single mycobacterial blood culture was 68% but increased if multiple samples were sent. In all, 27 patients started macrolide-based combination treatment and 14 had further surgery. To date, 18 patients have died (60%) a median of 30 months (interquartile range 20-39 months) after initial surgery. Survival analysis identified younger age, mitral valve surgery, mechanical valve replacement, higher serum sodium concentration and lower C-reactive protein as factors associated with better survival. CONCLUSIONS Mycobacterium chimaera infection following cardiac surgery is associated with a wide spectrum of disease. The diagnosis should be considered in all patients who develop an unexplained illness following cardiac surgery.
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Affiliation(s)
- J E Scriven
- Department of Infection and Tropical Medicine, Birmingham Heartlands Hospital, Birmingham, UK; National Infection Service, Public Health England, Colindale, London, UK.
| | - A Scobie
- National Infection Service, Public Health England, Colindale, London, UK
| | - N Q Verlander
- Statistics Unit, National Infection Service, Public Health England, Colindale, London, UK
| | - A Houston
- Department of Infection, St Georges Universities NHS Foundation Trust, London, UK
| | - T Collyns
- Department of Microbiology, Leeds Teaching Hospitals NHS Trust, Leeds, UK
| | - V Cajic
- Department of Infection, University Hospitals Coventry and Warwickshire NHS Trust, Coventry, UK
| | - O M Kon
- Department of Respiratory Medicine, Imperial College Healthcare NHS Trust, London, UK
| | - T Mitchell
- Department of Infection and Tropical Medicine, Sheffield Teaching Hospitals NHS Foundation Trust, Sheffield, UK
| | - O Rahama
- Hull and East Yorkshire Hospitals NHS Trust, Hull, UK
| | - A Robinson
- Bradford Teaching Hospitals NHS Foundation Trust, Bradford, UK
| | - S Withama
- Royal Brompton and Harefield NHS Foundation Trust, London, UK
| | - P Wilson
- University College London Hospitals NHS Foundation Trust, London, UK
| | - D Maxwell
- Department of Respiratory Medicine, East Sussex Healthcare NHS Trust, Eastbourne, UK
| | - D Agranoff
- Department of Microbiology and Infection, Brighton and Sussex University Hospitals NHS Trust, Brighton, UK
| | - E Davies
- Public Health Wales Microbiology, Cardiff, UK
| | - M Llewelyn
- Department of Infectious Diseases, Royal Gwent Hospital, Newport, UK
| | - S-S Soo
- Department of Microbiology, Nottingham University Hospitals NHS Trust, QMC Campus, Nottingham, UK
| | - A Sahota
- Department of Infection and Tropical Medicine, University Hospitals of Leicester NHS Trust, Leicester, UK
| | - M A Cooper
- Department of Microbiology, The Royal Wolverhampton Hospitals NHS Trust, Wolverhampton, UK
| | - M Hunter
- Department of Infectious Diseases, Royal Victoria Hospital, Belfast, UK
| | - J Tomlins
- Department of Infection, St Georges Universities NHS Foundation Trust, London, UK
| | - S Tiberi
- Division of Infection, Barts Health NHS Trust, Royal London Hospital, London, UK; Blizard Institute, Barts and the London School of Medicine and Dentistry, London, UK
| | - S Kendall
- Society for Cardiothoracic Surgery in Great Britain and Ireland, London, UK; South Tees Hospitals Foundation NHS Trust, Middlesbrough, UK
| | - M Dedicoat
- Department of Infection and Tropical Medicine, Birmingham Heartlands Hospital, Birmingham, UK
| | - E Alexander
- National Infection Service, Public Health England, Colindale, London, UK
| | | | - M Zambon
- National Infection Service, Public Health England, Colindale, London, UK
| | - T Lamagni
- National Infection Service, Public Health England, Colindale, London, UK
| | - E G Smith
- National Infection Service, Public Health England, Colindale, London, UK
| | - M Chand
- National Infection Service, Public Health England, Colindale, London, UK; National Institute for Health Research Health Protection Research Unit in Respiratory Infections, Imperial College London, London, UK; Guy's and St Thomas' NHS Foundation Trust, London, UK
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27
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Desai AN, Hurtado RM. Infections and outbreaks of nontuberculous mycobacteria in hospital settings. CURRENT TREATMENT OPTIONS IN INFECTIOUS DISEASES 2018; 10:169-181. [PMID: 30662371 DOI: 10.1007/s40506-018-0165-9] [Citation(s) in RCA: 9] [Impact Index Per Article: 1.5] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/26/2023]
Abstract
Purpose of review Non-tuberculous mycobacterial [NTM] infections in the hospital setting are a complex and often challenging entity. The goal of this review is to discuss diagnostic and treatment strategies for established as well as emerging nosocomial NTM infections. Recent findings NTM outbreaks have been documented in a variety of hospital settings. Contamination of medical devices or aqueous solutions is often implicated in the spread of infection. More recently, the slow grower M. chimaera has been reported in the setting of contaminated heater-cooler devices used for cardiopulmonary bypass and extracorporeal membrane oxygenation. In addition, increases in medical tourism for cosmetic surgery have led to outbreaks of rapidly growing mycobacteria. Summary Diagnosis and treatment of nosocomial NTM pose many challenges for the clinician. Surgical resection or debridement as well as combination antimycobacterial therapy are a mainstay in therapeutic management. Strict infection control and prevention practices are critical to the identification and cessation of outbreaks.
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Affiliation(s)
- Angel N Desai
- Massachusetts General Hospital, Division of Infectious Diseases, 55 Fruit Street, Boston, MA 02114 USA
| | - Rocío M Hurtado
- Massachusetts General Hospital, Division of Infectious Diseases, 55 Fruit Street, Boston, MA 02114 USA.,Harvard Medical School, 25 Shattuck St, Boston MA 02115 USA
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28
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Watzke R. Re: Zweifel et al.: Clinical and histopathologic findings in disseminated Mycobacterium chimera infection after cardiothoracic surgery (Ophthalmology. 2017;124:178-188). Ophthalmology 2018; 125:e33. [PMID: 29681302 DOI: 10.1016/j.ophtha.2017.11.038] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/25/2017] [Accepted: 11/29/2017] [Indexed: 11/30/2022] Open
Affiliation(s)
- Robert Watzke
- Oregon Health & Sciences University, Casey Eye Institute, Portland, Oregon.
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29
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Zweifel SA, Keller PM, Hasse B, Barthelmes D, Böni C. Reply. Ophthalmology 2018; 125:e33-e34. [PMID: 29681303 DOI: 10.1016/j.ophtha.2017.11.039] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/02/2017] [Accepted: 11/29/2017] [Indexed: 11/19/2022] Open
Affiliation(s)
- Sandrine A Zweifel
- Department of Ophthalmology, University Hospital Zurich, Zurich, Switzerland.
| | - Peter M Keller
- Institute of Medical Microbiology, University of Zurich, Zurich, Switzerland; Swiss National Center for Mycobacteria, University of Zurich, Institute of Medical Microbiology, Zurich, Switzerland
| | - Barbara Hasse
- Division of Infectious Diseases and Hospital Epidemiology, University Hospital Zurich, University of Zurich, Zurich, Switzerland
| | - Daniel Barthelmes
- Department of Ophthalmology, University Hospital Zurich, Zurich, Switzerland; The Save Sight Institute, The University of Sydney, Sydney, Australia
| | - Christian Böni
- Department of Ophthalmology, University Hospital Zurich, Zurich, Switzerland
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30
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31
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O'Neil CR, Taylor G, Smith S, Joffe AM, Antonation K, Shafran S, Kunimoto D. Mycobacterium chimaera Infection After Aortic Valve Replacement Presenting With Aortic Dissection and Pseudoaneurysm. Open Forum Infect Dis 2018; 5:ofy018. [PMID: 29479551 PMCID: PMC5814969 DOI: 10.1093/ofid/ofy018] [Citation(s) in RCA: 6] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/26/2017] [Accepted: 01/15/2018] [Indexed: 11/14/2022] Open
Abstract
We present a case of Mycobacterium chimaera infection presenting with aortic dissection and pseudoaneuysm in a 22-year-old man with a past history of aortic valve replacement. Clinicians should consider M. chimaera infection in those presenting with aortic dissection as a late complication of cardiovascular surgery.
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Affiliation(s)
- C R O'Neil
- Division of Infectious Diseases, Department of Medicine, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - G Taylor
- Division of Infectious Diseases, Department of Medicine, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, Alberta, Canada.,Infection Prevention and Control, Alberta Health Services, Edmonton, Alberta, Canada
| | - S Smith
- Division of Infectious Diseases, Department of Medicine, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, Alberta, Canada.,Infection Prevention and Control, Alberta Health Services, Edmonton, Alberta, Canada
| | - A M Joffe
- Division of Infectious Diseases, Department of Medicine, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, Alberta, Canada.,Infection Prevention and Control, Alberta Health Services, Edmonton, Alberta, Canada
| | - K Antonation
- National Microbiology Laboratory, Winnipeg, Manitoba, Canada
| | - S Shafran
- Division of Infectious Diseases, Department of Medicine, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, Alberta, Canada
| | - D Kunimoto
- Division of Infectious Diseases, Department of Medicine, Faculty of Medicine & Dentistry, University of Alberta, Edmonton, Alberta, Canada
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32
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Mycobacterium chimaera infections associated with heater-cooler units in cardiac surgery. Curr Opin Infect Dis 2018; 30:388-394. [PMID: 28538044 DOI: 10.1097/qco.0000000000000385] [Citation(s) in RCA: 39] [Impact Index Per Article: 6.5] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/26/2022]
Abstract
PURPOSE OF REVIEW Mycobacterium chimaera infections following cardiac surgery have been reported from an increasing number of countries. These infections are characterized by a poor prognosis with a case fatality rate around 50% despite treatment. Since the first description in 2013, our understanding has grown steadily. Several outbreak investigations, case series, and experiments with heater-cooler units (HCUs) have been published. This review summarizes the current knowledge. RECENT FINDINGS M. chimaera transmission occurs during cardiopulmonary bypass via bioaerosols emitted from contaminated HCU water systems. Manifestations of M. chimaera infection comprise endocarditis, vascular graft infections, surgical site infections, and dissemination. So far, all cases were exposed to a single HCU brand. Samples from the manufacturing site as well as clonality of M. chimaera strains isolated from HCUs and patients suggest a contamination already at time of delivery representing the main source for the outbreak. Nevertheless, HCU contamination in hospitals cannot be excluded. SUMMARY Improved awareness of physicians of M. chimaera infection is crucial to prompt adequate diagnostic workup in patients that have been exposed to HCU presenting with compatible symptoms. For risk mitigation, strict separation between the air volume in contact with HCUs and critical clinical areas such as operating rooms is essential.
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33
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Bilateral choroiditis as the only sign of persistent Mycobacterium intracellulare infection following haematogenous spread in an immunocompromised patient. Infection 2017; 46:423-426. [PMID: 29224191 DOI: 10.1007/s15010-017-1109-x] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/25/2017] [Accepted: 12/05/2017] [Indexed: 10/18/2022]
Abstract
An immunocompromised patient had positive blood cultures for Mycobacterium intracellulare and no identifiable organ seeding was started on treatment. One month later, the patient was clinically well with negative blood cultures but drug-induced myelotoxicity had developed. Ocular fundus examination at this time revealed bilateral choroidal granulomas which changed patient management.
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34
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Ninh A, Weiner M, Goldberg A. Healthcare-Associated Mycobacterium chimaera Infection Subsequent to Heater-Cooler Device Exposure During Cardiac Surgery. J Cardiothorac Vasc Anesth 2017; 31:1831-1835. [DOI: 10.1053/j.jvca.2017.05.028] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 02/22/2017] [Indexed: 11/11/2022]
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35
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Target-Specific Assay for Rapid and Quantitative Detection of Mycobacterium chimaera DNA. J Clin Microbiol 2017; 55:1847-1856. [PMID: 28381604 DOI: 10.1128/jcm.00197-17] [Citation(s) in RCA: 16] [Impact Index Per Article: 2.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/02/2017] [Accepted: 03/25/2017] [Indexed: 11/20/2022] Open
Abstract
Mycobacterium chimaera is an opportunistic environmental mycobacterium belonging to the Mycobacterium avium-M. intracellulare complex. Although most commonly associated with pulmonary disease, there has been growing awareness of invasive M. chimaera infections following cardiac surgery. Investigations suggest worldwide spread of a specific M. chimaera clone, associated with contaminated hospital heater-cooler units used during the surgery. Given the global dissemination of this clone, its potential to cause invasive disease, and the laboriousness of current culture-based diagnostic methods, there is a pressing need to develop rapid and accurate diagnostic assays specific for M. chimaera Here, we assessed 354 mycobacterial genome sequences and confirmed that M. chimaera is a phylogenetically coherent group. In silico comparisons indicated six DNA regions present only in M. chimaera We targeted one of these regions and developed a TaqMan quantitative PCR (qPCR) assay for M. chimaera with a detection limit of 100 CFU/ml in whole blood spiked with bacteria. In vitro screening against DNA extracted from 40 other mycobacterial species and 22 bacterial species from 21 diverse genera confirmed the in silico-predicted specificity for M. chimaera Screening 33 water samples from heater-cooler units with this assay highlighted the increased sensitivity of PCR compared to culture, with 15 of 23 culture-negative samples positive by M. chimaera qPCR. We have thus developed a robust molecular assay that can be readily and rapidly deployed to screen clinical and environmental specimens for M. chimaera.
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