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Pleural Space Infections. Life (Basel) 2023; 13:life13020376. [PMID: 36836732 PMCID: PMC9959801 DOI: 10.3390/life13020376] [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: 12/24/2022] [Revised: 01/23/2023] [Accepted: 01/24/2023] [Indexed: 01/31/2023] Open
Abstract
Pleural space infections have been a well-recognized clinical syndrome for over 4000 years and continue to cause significant morbidity and mortality worldwide. However, our collective understanding of the causative pathophysiology has greatly expanded over the last few decades, as have our treatment options. The aim of this paper is to review recent updates in our understanding of this troublesome disease and to provide updates on established and emerging treatment modalities for patients suffering from pleural space infections. With that, we present a review and discussion synthesizing the recent pertinent literature surrounding the history, epidemiology, pathophysiology, diagnosis, and management of these challenging infections.
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2
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Addala DN, Denniston P, Sundaralingam A, Rahman NM. Optimal diagnostic strategies for pleural diseases and identifying high-risk patients. Expert Rev Respir Med 2023; 17:15-26. [PMID: 36710423 DOI: 10.1080/17476348.2023.2174527] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/31/2023]
Abstract
INTRODUCTION Pleural diseases encompass a broad range of conditions with diverse and heterogenous etiologies. Diagnostics in pleural diseases thus represents a challenging field with a wide array of available testing to distinguish between the numerous causes of pleural disease. Nonetheless, deploying best practice diagnostics in this area is essential in reducing both duration o the investigation pathway and symptom burden. AREAS COVERED This article critically appraises the optimal diagnostic strategies and pathway in patients with pleural disease, reviewing the latest evidence and key practice points in achieving a treatable diagnosis in patients with pleural disease. We also cover future and novel directions that are likely to influence pleural diagnostics in the near future. PubMed was searched for articles related to pleural diagnostics (search terms below), with the date ranges including June 2012 to June 2022. EXPERT OPINION No single test will ever be sufficient to provide a diagnosis in pleural conditions. The key to reducing procedure burden and duration to diagnosis lies in personalizing the investigation pathway to patients and deploying tests with the highest diagnostic yield early (such as pleural biopsy in infection and malignancy). Novel biomarkers may also allow earlier diagnostic precision in the near future.
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Affiliation(s)
- D N Addala
- Oxford Respiratory Trials Unit, Nuffield Department of Medicine, Oxford University, Oxford, UK.,Department of Respiratory Medicine, Oxford Pleural Unit, Oxford University Hospitals, Oxford, UK
| | - P Denniston
- Oxford Respiratory Trials Unit, Nuffield Department of Medicine, Oxford University, Oxford, UK.,Department of Respiratory Medicine, Oxford Pleural Unit, Oxford University Hospitals, Oxford, UK
| | - A Sundaralingam
- Oxford Respiratory Trials Unit, Nuffield Department of Medicine, Oxford University, Oxford, UK.,Department of Respiratory Medicine, Oxford Pleural Unit, Oxford University Hospitals, Oxford, UK
| | - N M Rahman
- Oxford Respiratory Trials Unit, Nuffield Department of Medicine, Oxford University, Oxford, UK.,Department of Respiratory Medicine, Oxford Pleural Unit, Oxford University Hospitals, Oxford, UK.,Oxford Biomedical Research Centre, National Institute for Health Research, Oxford, UK.,Chinese Academy of Medical Science Oxford Institute, Nuffield Department of Medicine, Medical Sciences Division, University of Oxford, Oxford, UK
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3
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Sakai T, Sano A, Shimizu H, Azuma Y, Urabe N, Isobe K, Sakamoto S, Takai Y, Murakami Y, Kishi K, Iyoda A. Multifocal locules including the anterior mediastinum side as a surgical indicator in pleural infection. J Thorac Dis 2022; 14:1990-1999. [PMID: 35813740 PMCID: PMC9264076 DOI: 10.21037/jtd-21-1812] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/15/2021] [Accepted: 03/31/2022] [Indexed: 11/21/2022]
Abstract
Background The indication for and the timing of surgery in patients with pleural infection remains unclear. Determining the need for surgery in patients with pleural infection may help in the early consultation of surgeons. Methods Data of 167 consecutive patients with pleural infection were retrospectively reviewed. To detect a surgical indicator, the variables of patients who required surgery were compared with those of patients who were cured by non-surgical therapy (n=94) and patients resistant to the non-surgical therapy (n=73; 62 underwent surgery, and 11 showed recurrence or disease-related death after non-surgical treatment). Prognosis and timing of surgery were analyzed by comparing three groups: patients who underwent surgery within 7 days of admission (n=33), patients who underwent surgery after 7 days of admission (n=29), and patients who underwent non-surgical therapy (n=105). Results The presence of multifocal locules, including a locule on the anterior mediastinum side (LAMS) was a significant indicator of resistance to initial non-surgical therapy, as compared to the absence of locules (P<0.0001), a single locule (P<0.0001), or multifocal locules without a LAMS (P=0.0041). Recurrence and mortality were not observed in the patients who underwent surgery within 7 days of admission, and the hospitalization period (P=0.0071) and duration of C-reactive protein (CRP) improvement (P<0.0001) were significantly shorter in these patients compared with those who that underwent surgery after 7 days. Conclusions In patients with pleural infection, the presence of multifocal locules, including a LAMS, was associated with resistance to non-surgical therapy. Early surgery should be considered for these patients to shorten the hospitalization period and improve the prognosis.
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Affiliation(s)
- Takashi Sakai
- Division of Chest Surgery, Department of Surgery, Toho University School of Medicine, Tokyo, Japan
| | - Atsushi Sano
- Division of Chest Surgery, Department of Surgery, Toho University School of Medicine, Tokyo, Japan
| | - Hiroshige Shimizu
- Division of Respiratory Medicine, Department of Internal Medicine, Toho University School of Medicine, Tokyo, Japan
| | - Yoko Azuma
- Division of Chest Surgery, Department of Surgery, Toho University School of Medicine, Tokyo, Japan
| | - Naohisa Urabe
- Division of Respiratory Medicine, Department of Internal Medicine, Toho University School of Medicine, Tokyo, Japan
| | - Kazutoshi Isobe
- Division of Respiratory Medicine, Department of Internal Medicine, Toho University School of Medicine, Tokyo, Japan
| | - Susumu Sakamoto
- Division of Respiratory Medicine, Department of Internal Medicine, Toho University School of Medicine, Tokyo, Japan
| | - Yujiro Takai
- Division of Respiratory Medicine, Department of Internal Medicine, Toho University School of Medicine, Tokyo, Japan
| | - Yoshitaka Murakami
- Department of Medical Statistics, Toho University School of Medicine, Tokyo, Japan
| | - Kazuma Kishi
- Division of Respiratory Medicine, Department of Internal Medicine, Toho University School of Medicine, Tokyo, Japan
| | - Akira Iyoda
- Division of Chest Surgery, Department of Surgery, Toho University School of Medicine, Tokyo, Japan
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Abstract
The rising incidence and high morbidity of pleural infection remain a significant challenge to health care systems worldwide. With distinct microbiology and treatment paradigms from pneumonia, pleural infection is an area in which the evidence base has been rapidly evolving. Progress in recent years has revolved around characterizing the microbiome of pleural infection and the addition of new strategies such as intrapleural enzyme therapy to the established treatment pathway of drainage and antibiotics. The future of improving outcomes lies with personalizing treatment, establishing optimal timing of intrapleural agents and surgery, alongside wider use of risk stratification to guide treatment.
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Affiliation(s)
- Dinesh N Addala
- Oxford University Hospitals NHS Foundation Trust; Department of Respiratory Medicine, Churchill Hospital, Old Road, Headington, Oxford OX3 7LE, UK.
| | - Eihab O Bedawi
- Oxford University Hospitals NHS Foundation Trust; Department of Respiratory Medicine, Churchill Hospital, Old Road, Headington, Oxford OX3 7LE, UK
| | - Najib M Rahman
- Oxford University Hospitals NHS Foundation Trust; Oxford NIHR Biomedical Research Centre, John Radcliffe Hospital, Headington OX3 9DU, UK
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5
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Milojevic I, Lemma K, Khosla R. Ultrasound use in the ICU for interventional pulmonology procedures. J Thorac Dis 2021; 13:5343-5361. [PMID: 34527370 PMCID: PMC8411174 DOI: 10.21037/jtd-19-3564] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/04/2020] [Accepted: 05/29/2020] [Indexed: 12/12/2022]
Abstract
Critical care ultrasound has shifted the paradigm of thoracic imaging by enabling the treating physician to acquire and interpret images essential for clinical decision-making, at the bedside, in real-time. Once considered impossible, lung ultrasound based on interpretation of artifacts along with true images, has gained momentum during the last decade, as an integral part of rapid evaluation algorithms for acute respiratory failure, shock and cardiac arrest. Procedural ultrasound image guidance is a standard of care for both common bedside procedures, and advanced procedures within interventional pulmonologist’s (IP’s) scope of practice. From IP’s perspective, the lung, pleural, and chest wall ultrasound expertise is a prerequisite for mastery in pleural drainage techniques and transthoracic biopsies. Another ultrasound application of interest to the IP in the intensive care unit (ICU) setting is during percutaneous dilatational tracheostomy (PDT). As ICU demographics shift towards older and sicker patients, the indications for closed pleural drainage procedures, bedside transthoracic biopsies, and percutaneous dilatational tracheostomies have dramatically increased. Although ultrasound expertise is considered an essential IP operator skill there is no validated curriculum developed to address this component. Further, there is a need for developing an educational tool that matches up with the curriculum and could be integrated real-time with ultrasound-guided procedures.
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Affiliation(s)
- Ivana Milojevic
- Department of Pulmonary, Critical Care and Sleep Medicine, George Washington University Medical Faculty Associates, Washington, DC, USA
| | - Kewakebt Lemma
- Department of Pulmonary, Critical Care and Sleep Medicine, George Washington University Medical Faculty Associates, Washington, DC, USA
| | - Rahul Khosla
- Department of Pulmonary and Critical Care Medicine, US Department of Veterans Affairs, Washington, DC, USA
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6
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Hassan M, Patel S, Sadaka AS, Bedawi EO, Corcoran JP, Porcel JM. Recent Insights into the Management of Pleural Infection. Int J Gen Med 2021; 14:3415-3429. [PMID: 34290522 PMCID: PMC8286963 DOI: 10.2147/ijgm.s292705] [Citation(s) in RCA: 16] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/27/2021] [Accepted: 06/29/2021] [Indexed: 01/15/2023] Open
Abstract
Pleural infection in adults has considerable morbidity and continues to be a life-threatening condition. The term “pleural infection” encompasses complicated parapneumonic effusions and primary pleural infections, and includes but is not limited to empyema, which refers to collection of pus in the pleural cavity. The incidence of pleural infection in adults has been continuously increasing over the past two decades, particularly in older adults, and most of such patients have comorbidities. Management of pleural infection requires prolonged duration of hospitalization (average 14 days). There are recognized differences in microbial etiology of pleural infection depending on whether the infection was acquired in the community or in a health-care setting. Anaerobic bacteria are acknowledged as a major cause of pleural infection, and thus anaerobic coverage in antibiotic regimens for pleural infection is mandatory. The key components of managing pleural infection are appropriate antimicrobial therapy and chest-tube drainage. In patients who fail medical therapy by manifesting persistent sepsis despite standard measures, surgical intervention to clear the infected space or intrapleural fibrinolytic therapy (in poor surgical candidates) are recommended. Recent studies have explored the role of early intrapleural fibrinolytics or first-line surgery, but due to considerable costs of such interventions and the lack of convincing evidence of improved outcomes with early use, early intervention cannot be recommended, and further evidence is awaited from ongoing studies. Other areas of research include the role of routine molecular testing of infected pleural fluid in improving the rate of identification of causative organisms. Other research topics include the benefit of such interventions as medical thoracoscopy, high-volume pleural irrigation with saline/antiseptic solution, and repeated thoracentesis (as opposed to chest-tube drainage) in reducing morbidity and improving outcomes of pleural infection. This review summarizes current knowledge and practice in managing pleural infection and future research directions.
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Affiliation(s)
- Maged Hassan
- Chest Diseases Department, Alexandria University Faculty of Medicine, Alexandria, Egypt
| | - Shefaly Patel
- Oxford Centre for Respiratory Medicine, Oxford University Hospitals, Oxford, UK
| | - Ahmed S Sadaka
- Chest Diseases Department, Alexandria University Faculty of Medicine, Alexandria, Egypt
| | - Eihab O Bedawi
- Oxford Centre for Respiratory Medicine, Oxford University Hospitals, Oxford, UK
| | - John P Corcoran
- Department of Respiratory Medicine, University Hospitals Plymouth NHS Trust, Plymouth, UK
| | - José M Porcel
- Department of Internal Medicine, Arnau de Vilanova University Hospital, Lleida, Spain
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7
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Sundaralingam A, Banka R, Rahman NM. Management of Pleural Infection. Pulm Ther 2021; 7:59-74. [PMID: 33296057 PMCID: PMC7724776 DOI: 10.1007/s41030-020-00140-7] [Citation(s) in RCA: 12] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/29/2020] [Accepted: 11/16/2020] [Indexed: 12/16/2022] Open
Abstract
Pleural infection is a millennia-spanning condition that has proved challenging to treat over many years. Fourteen percent of cases of pneumonia are reported to present with a pleural effusion on chest X-ray (CXR), which rises to 44% on ultrasound but many will resolve with prompt antibiotic therapy. To guide treatment, parapneumonic effusions have been separated into distinct categories according to their biochemical, microbiological and radiological characteristics. There is wide variation in causative organisms according to geographical location and healthcare setting. Positive cultures are only obtained in 56% of cases; therefore, empirical antibiotics should provide Gram-positive, Gram-negative and anaerobic cover whilst providing adequate pleural penetrance. With the advent of next-generation sequencing techniques, yields are expected to improve. Complicated parapneumonic effusions and empyema necessitate prompt tube thoracostomy. It is reported that 16-27% treated in this way will fail on this therapy and require some form of escalation. The now seminal Multi-centre Intrapleural Sepsis Trials (MIST) demonstrated the use of combination fibrinolysin and DNase as more effective in the treatment of empyema compared to either agent alone or placebo, and success rates of 90% are reported with this technique. The focus is now on dose adjustments according to the patient's specific 'fibrinolytic potential', in order to deliver personalised therapy. Surgery has remained a cornerstone in the management of pleural infection and is certainly required in late-stage manifestations of the disease. However, its role in early-stage disease and optimal patient selection is being re-explored. A number of adjunct and exploratory therapies are also discussed in this review, including the use of local anaesthetic thoracoscopy, indwelling pleural catheters, intrapleural antibiotics, pleural irrigation and steroid therapy.
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Affiliation(s)
- Anand Sundaralingam
- Oxford Centre for Respiratory Medicine, Oxford University Hospitals NHS Foundation Trust, Oxford, UK.
| | - Radhika Banka
- Oxford Centre for Respiratory Medicine, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
| | - Najib M Rahman
- Oxford Centre for Respiratory Medicine, Oxford University Hospitals NHS Foundation Trust, Oxford, UK
- Oxford Respiratory Trials Unit, University of Oxford, Oxford, UK
- Oxford NIHR Biomedical Research Centre, Oxford, UK
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8
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Akamine T, Kitahara H, Hashinokuchi A, Shimokawa M, Miura N, Kometani T, Shikada Y, Sonoda T. Assessment of Intraoperative Microbiological Culture in Patients with Empyema: Comparison with Preoperative Microbiological Culture. Ann Thorac Cardiovasc Surg 2021; 27:346-354. [PMID: 33967122 PMCID: PMC8684835 DOI: 10.5761/atcs.oa.20-00327] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022] Open
Abstract
Purpose: Assessing microbiological culture results is essential in the diagnosis of empyema and appropriate antibiotic selection; however, the guidelines for the management of empyema do not mention assessing microbiological culture intraoperatively. Therefore, we tested the hypothesis that intraoperative microbiological culture may improve the management of empyema. Methods: We performed a retrospective analysis of 47 patients who underwent surgery for stage II/III empyema from January 2011 to May 2019. We compared the positivity of microbiological culture assessed preoperatively at empyema diagnosis versus intraoperatively. We further investigated the clinical characteristics and postoperative outcomes of patients whose intraoperative microbiological culture results were positive. Results: The positive rates of preoperative and intraoperative microbiological cultures were 27.7% (13/47) and 36.2% (17/47), respectively. Among 34 patients who were culture-negative preoperatively, eight patients (23.5%) were culture-positive intraoperatively. Intraoperative positive culture was significantly associated with a shorter duration of preoperative antibiotic treatment (p = 0.002). There was no significant difference between intraoperative culture-positive and -negative results regarding postoperative complications. Conclusions: Intraoperative microbiological culture may help detect bacteria in patients whose microbiological culture results were negative at empyema diagnosis. Assessing microbiological culture should be recommended intraoperatively as well as preoperatively, for the appropriate management of empyema.
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Affiliation(s)
- Takaki Akamine
- Department of Surgery, Saiseikai Fukuoka General Hospital, Fukuoka, Fukuoka, Japan
| | - Hirokazu Kitahara
- Department of Surgery, Saiseikai Karatsu Hospital, Karatsu, Saga, Japan
| | | | - Mototsugu Shimokawa
- Department of Biostatistics, Yamaguchi University Graduate School of Medicine, Ube, Yamaguchi, Japan
| | - Naoko Miura
- Department of Surgery, Saiseikai Fukuoka General Hospital, Fukuoka, Fukuoka, Japan
| | - Takuro Kometani
- Department of Surgery, Saiseikai Fukuoka General Hospital, Fukuoka, Fukuoka, Japan
| | - Yasunori Shikada
- Department of Surgery, Saiseikai Fukuoka General Hospital, Fukuoka, Fukuoka, Japan
| | - Takashi Sonoda
- Department of Surgery, Saiseikai Karatsu Hospital, Karatsu, Saga, Japan
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9
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Diagnostics in Pleural Disease. Diagnostics (Basel) 2020; 10:diagnostics10121046. [PMID: 33291748 PMCID: PMC7761906 DOI: 10.3390/diagnostics10121046] [Citation(s) in RCA: 7] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 11/17/2020] [Revised: 11/30/2020] [Accepted: 12/01/2020] [Indexed: 02/08/2023] Open
Abstract
Pleural disease diagnostics represent a sprawling topic that has enjoyed a renaissance in recent years from humble beginnings. Whilst pleural patients are heterogeneous as a population and in the aetiology of the disease with which they present, we provide an overview of the typical diagnostic approach. Pleural fluid analysis is the cornerstone of the diagnostic pathway; however, it has many shortcomings. Strong cases have been made for more invasive upfront investigations, including image-guided biopsies or local anaesthetic thoracoscopy, in selected populations. Imaging can guide the diagnostic process as well as act as a vehicle to facilitate therapies, and this is never truer than with the recent advances in thoracic ultrasound.
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10
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Kogan Y, Sabo E, Odeh M. Diagnostic Value of C-Reactive Protein in Discrimination between Uncomplicated and Complicated Parapneumonic Effusion. Diagnostics (Basel) 2020; 10:diagnostics10100829. [PMID: 33076437 PMCID: PMC7602659 DOI: 10.3390/diagnostics10100829] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/13/2020] [Revised: 10/13/2020] [Accepted: 10/15/2020] [Indexed: 11/30/2022] Open
Abstract
Objectives: The role of serum C-reactive protein (CRPs) and pleural fluid CRP (CRPpf) in discriminating uncomplicated parapneumonic effusion (UCPPE) from complicated parapneumonic effusion (CPPE) is yet to be validated since most of the previous studies were on small cohorts and with variable results. The role of CRPs and CRPpf gradient (CRPg) and of their ratio (CRPr) in this discrimination has not been previously reported. The study aims to assess the diagnostic efficacy of CRPs, CRPpf, CRPr, and CRPg in discriminating UCPPE from CPPE in a relatively large cohort. Methods: The study population included 146 patients with PPE, 86 with UCPPE and 60 with CPPE. Levels of CRPs and CRPpf were measured, and the CRPg and CRPr were calculated. The values are presented as mean ± SD. Results: Mean levels of CRPs, CRPpf, CRPg, and CRPr of the UCPPE group were 145.3 ± 67.6 mg/L, 58.5 ± 38.5 mg/L, 86.8 ± 37.3 mg/L, and 0.39 ± 0.11, respectively, and for the CPPE group were 302.2 ± 75.6 mg/L, 112 ± 65 mg/L, 188.3 ± 62.3 mg/L, and 0.36 ± 0.19, respectively. Levels of CRPs, CRPpf, and CRPg were significantly higher in the CPPE than in the UCPPE group (p < 0.0001). No significant difference was found between the two groups for levels of CRPr (p = 0.26). The best cut-off value calculated by the receiver operating characteristic (ROC) analysis for discriminating UCPPE from CPPE was for CRPs, 211.5 mg/L with area under the curve (AUC) = 94% and p < 0.0001, for CRPpf, 90.5 mg/L with AUC = 76.3% and p < 0.0001, and for CRPg, 142 mg/L with AUC = 91% and p < 0.0001. Conclusions: CRPs, CRPpf, and CRPg are strong markers for discrimination between UCPPE and CPPE, while CRPr has no role in this discrimination.
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Affiliation(s)
- Yana Kogan
- Department of Internal Medicine A, Bnai Zion Medical Center, Haifa 31048, Israel;
- Pulmonary Division, Carmel Medical Center, Haifa 31048, Israel
- Faculty of Medicine, Technion—Israel Institute of Technology, Haifa 31048, Israel;
| | - Edmond Sabo
- Faculty of Medicine, Technion—Israel Institute of Technology, Haifa 31048, Israel;
- Institute of Pathology, Carmel Medical Center, Haifa 31048, Israel
| | - Majed Odeh
- Department of Internal Medicine A, Bnai Zion Medical Center, Haifa 31048, Israel;
- Faculty of Medicine, Technion—Israel Institute of Technology, Haifa 31048, Israel;
- Correspondence: ; Tel.: +972-4-835-9781
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11
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The Use of a Novel Quantitative Marker of Echogenicity of Pleural Fluid in Parapneumonic Pleural Effusions. Can Respir J 2020; 2020:1283590. [PMID: 33082889 PMCID: PMC7556052 DOI: 10.1155/2020/1283590] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/15/2020] [Revised: 07/24/2020] [Accepted: 09/22/2020] [Indexed: 12/15/2022] Open
Abstract
Background Thoracic ultrasound is an essential tool in the daily clinical care of pleural effusions and especially parapneumonic pleural effusions (PPEs), in terms of diagnosis, management, and follow-up. Hypoechogenicity index (HI) is a quantitative marker of pleural fluid echogenicity. We aimed to examine associations of HI with pleural inflammation in patients with PPE. Methods All patients included underwent a thoracic ultrasound with HI determination at the first day of their admission for a PPE. Thoracentesis was performed in all patients. Demographics, laboratory measurements, and clinical data were collected prospectively and recorded in all subjects. Results Twenty-four patients with PPE were included in the study. HI was statistically significantly correlated with intensity of inflammation as suggested by pleural fluid LDH (p < 0.001, r = −0.831), pleural fluid glucose (p=0.022, r = 0.474), and pleural fluid pH (p < 0.001, r = 0.811). HI was correlated with ADA levels (p=0.005, r = −0.552). We observed a statistically significant correlation of HI with pleural fluid total cell number (p < 0.001, r = −0.657) and polymorphonuclears percentage (p=0.02, r = −0.590), as well as days to afebrile (p=0.046, r = −0.411), duration of chest tube placement (p < 0.001, r = −0.806), and days of hospitalization (p=0.013, r = −0.501). Discussion. HI presents a fast, easily applicable, objective, and quantitative marker of pleural inflammation that reliably reflects the intensity of pleural inflammation and could potentially guide therapeutic management of PPE.
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12
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Hassan M, Mercer RM, Rahman NM. Thoracic ultrasound in the modern management of pleural disease. Eur Respir Rev 2020; 29:29/156/190136. [PMID: 32350086 DOI: 10.1183/16000617.0136-2019] [Citation(s) in RCA: 19] [Impact Index Per Article: 4.8] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 10/11/2019] [Accepted: 11/22/2019] [Indexed: 12/11/2022] Open
Abstract
Physician-led thoracic ultrasound (TUS) has substantially changed how respiratory disorders, and in particular pleural diseases, are managed. The use of TUS as a point-of-care test enables the respiratory physician to quickly and accurately diagnose pleural pathology and ensure safe access to the pleural space during thoracentesis or chest drain insertion. Competence in performing TUS is now an obligatory part of respiratory speciality training programmes in different parts of the world. Pleural physicians with higher levels of competence routinely use TUS during the planning and execution of more sophisticated diagnostic and therapeutic interventions, such as core needle pleural biopsies, image-guided drain insertion and medical thoracoscopy. Current research is gauging the potential of TUS in predicting the outcome of different pleural interventions and how it can aid in tailoring the optimum treatment according to different TUS-based parameters.
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Affiliation(s)
- Maged Hassan
- Chest Diseases Dept, Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | - Rachel M Mercer
- Oxford Pleural Unit, Oxford Respiratory Trials Unit, University of Oxford, Oxford, UK
| | - Najib M Rahman
- Oxford Pleural Unit, Oxford Respiratory Trials Unit, University of Oxford, Oxford, UK
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13
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Pleural Infection—a Growing Problem in the Elderly. CURRENT GERIATRICS REPORTS 2020. [DOI: 10.1007/s13670-020-00320-y] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 10/24/2022]
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14
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Abstract
Interpreting pleural fluid results correctly requires an awareness of the possible aetiologies of a pleural effusion and an understanding of the reliability of the outcome of each investigation. All results must be interpreted within each different clinical context and knowledge of the pitfalls for each test is necessary when the diagnosis is unclear. This review aims to discuss the common aetiologies of a pleural effusion and some of the pitfalls in interpretation that can occur when the diagnosis is unclear.
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Affiliation(s)
- Rachel M Mercer
- University of Oxford, Oxford, UK and Oxford University Hospitals NHS Trust, Oxford, UK
| | | | - Jose M Porcel
- Arnau de Vilanova University Hospital, Lleida, Spain
| | - Najib M Rahman
- University of Oxford, Oxford, UK and Oxford University Hospitals NHS Trust, Oxford, UK
| | - Ioannis Psallidas
- University of Oxford, Oxford, UK and Oxford University Hospitals NHS Trust, Oxford, UK
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15
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Bedawi EO, Hassan M, Rahman NM. Recent developments in the management of pleural infection: A comprehensive review. CLINICAL RESPIRATORY JOURNAL 2018; 12:2309-2320. [PMID: 30005142 DOI: 10.1111/crj.12941] [Citation(s) in RCA: 32] [Impact Index Per Article: 5.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Subscribe] [Scholar Register] [Received: 03/06/2018] [Revised: 06/25/2018] [Accepted: 06/27/2018] [Indexed: 11/29/2022]
Abstract
OBJECTIVES Pleural infection is a condition commonly encountered by the respiratory physician. This review aims to provide the reader with an update on the most recent data regarding the epidemiology, microbiology, and the management of pleural infection. DATA SOURCE Medline was searched for articles related to pleural infection using the terms "pleural infection," "empyema," and "parapneumonic." The search was limited to the years 1997-2017. Only human studies and reports in English were included. RESULTS A rise in the incidence of pleural infection is seen worldwide. Despite the improvement in healthcare practices, the mortality from pleural infection remains high. The role of oral microflora in the etiology of pleural infection is firmly established. A concise review of the recent insights on the pathogenesis of pleural infections is presented. A particular focus is made on the role of tPA, DNAse and similar substances and their interaction with inflammatory cells and how this affects the pathogenesis and treatment of pleural infection. CONCLUSION Pleural infection is a common disease with significant morbidity and mortality, as well as a considerable economic burden. The role of medical management is expanding thanks to the widespread use of newer treatments.
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Affiliation(s)
- Eihab O Bedawi
- Oxford Centre for Respiratory Medicine, Oxford University Hospitals, Oxford, United Kingdom.,Oxford Respiratory Trials Unit, University of Oxford, Oxford, United Kingdom
| | - Maged Hassan
- Oxford Centre for Respiratory Medicine, Oxford University Hospitals, Oxford, United Kingdom.,Oxford Respiratory Trials Unit, University of Oxford, Oxford, United Kingdom.,Chest Diseases Department, Faculty of Medicine, Alexandria University, Alexandria, Egypt
| | - Najib M Rahman
- Oxford Centre for Respiratory Medicine, Oxford University Hospitals, Oxford, United Kingdom.,Oxford Respiratory Trials Unit, University of Oxford, Oxford, United Kingdom.,NIHR Oxford Biomedical Research Centre, University of Oxford, Oxford, United Kingdom
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Komissarov AA, Rahman N, Lee YCG, Florova G, Shetty S, Idell R, Ikebe M, Das K, Tucker TA, Idell S. Fibrin turnover and pleural organization: bench to bedside. Am J Physiol Lung Cell Mol Physiol 2018; 314:L757-L768. [PMID: 29345198 DOI: 10.1152/ajplung.00501.2017] [Citation(s) in RCA: 28] [Impact Index Per Article: 4.7] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/17/2022] Open
Abstract
Recent studies have shed new light on the role of the fibrinolytic system in the pathogenesis of pleural organization, including the mechanisms by which the system regulates mesenchymal transition of mesothelial cells and how that process affects outcomes of pleural injury. The key contribution of plasminogen activator inhibitor-1 to the outcomes of pleural injury is now better understood as is its role in the regulation of intrapleural fibrinolytic therapy. In addition, the mechanisms by which fibrinolysins are processed after intrapleural administration have now been elucidated, informing new candidate diagnostics and therapeutics for pleural loculation and failed drainage. The emergence of new potential interventional targets offers the potential for the development of new and more effective therapeutic candidates.
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Affiliation(s)
- Andrey A Komissarov
- Department of Cellular and Molecular Biology, The University of Texas Health Science Center at Tyler , Tyler, Texas
| | - Najib Rahman
- Oxford Pleural Unit and Oxford Respiratory Trials Unit, University of Oxford, Churchill Hospital; and National Institute of Health Research Biomedical Research Centre , Oxford , United Kingdom
| | - Y C Gary Lee
- Department of Respiratory Medicine, Sir Charles Gairdner Hospital; Pleural Medicine Unit, Institute for Respiratory Health , Perth ; School of Medicine and Pharmacology, University of Western Australia , Perth , Australia
| | - Galina Florova
- Department of Cellular and Molecular Biology, The University of Texas Health Science Center at Tyler , Tyler, Texas
| | - Sreerama Shetty
- Department of Cellular and Molecular Biology, The University of Texas Health Science Center at Tyler , Tyler, Texas
| | - Richard Idell
- Department of Behavioral Health, Child and Adolescent Psychiatry, The University of Texas Health Science Center at Tyler , Tyler, Texas
| | - Mitsuo Ikebe
- Department of Cellular and Molecular Biology, The University of Texas Health Science Center at Tyler , Tyler, Texas
| | - Kumuda Das
- Department of Translational and Vascular Biology, The University of Texas Health Science Center at Tyler , Tyler, Texas
| | - Torry A Tucker
- Department of Cellular and Molecular Biology, The University of Texas Health Science Center at Tyler , Tyler, Texas
| | - Steven Idell
- Department of Cellular and Molecular Biology, The University of Texas Health Science Center at Tyler , Tyler, Texas
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17
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Fitzgerald DB, Lee YG. Pleural infection: To drain or not to drain? Respirology 2017; 22:1055-1056. [DOI: 10.1111/resp.13081] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.4] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Accepted: 04/24/2017] [Indexed: 11/29/2022]
Affiliation(s)
- Deirdre B. Fitzgerald
- Department of Respiratory Medicine; Sir Charles Gairdner Hospital; Perth Western Australia Australia
- Pleural Medicine Unit; Institute for Respiratory Health; Perth Western Australia Australia
| | - Y.C. Gary Lee
- Department of Respiratory Medicine; Sir Charles Gairdner Hospital; Perth Western Australia Australia
- Pleural Medicine Unit; Institute for Respiratory Health; Perth Western Australia Australia
- School of Medicine and Pharmacology; University of Western Australia; Perth Western Australia Australia
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The American Association for Thoracic Surgery consensus guidelines for the management of empyema. J Thorac Cardiovasc Surg 2017; 153:e129-e146. [PMID: 28274565 DOI: 10.1016/j.jtcvs.2017.01.030] [Citation(s) in RCA: 184] [Impact Index Per Article: 26.3] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 08/25/2016] [Revised: 12/24/2016] [Accepted: 01/08/2017] [Indexed: 11/24/2022]
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Miyoshi S, Sasada S, Izumo T, Matsumoto Y, Tsuchida T. Diagnostic Utility of Pleural Fluid Cell Block versus Pleural Biopsy Collected by Flex-Rigid Pleuroscopy for Malignant Pleural Disease: A Single Center Retrospective Analysis. PLoS One 2016; 11:e0167186. [PMID: 27880851 PMCID: PMC5120864 DOI: 10.1371/journal.pone.0167186] [Citation(s) in RCA: 15] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 07/22/2016] [Accepted: 11/09/2016] [Indexed: 12/03/2022] Open
Abstract
Background Some trials recently demonstrated the benefit of targeted treatment for malignant disease; therefore, adequate tissues are needed to detect the targeted gene. Pleural biopsy using flex-rigid pleuroscopy and pleural effusion cell block analysis are both useful for diagnosis of malignancy and obtaining adequate samples. The purpose of our study was to compare the diagnostic utility between the two methods among patients with malignant pleural disease with effusion. Methods Data from patients who underwent flex-rigid pleuroscopy for diagnosis of pleural effusion suspicious for malignancy at the National Cancer Center Hospital, Japan between April 2011 and June 2014 were retrospectively reviewed. All procedures were performed under local anesthesia. At least 150 mL of pleural fluid was collected by pleuroscopy, followed by pleural biopsies from the abnormal site. Results Thirty-five patients who were finally diagnosed as malignant pleural disease were included in this study. Final diagnoses of malignancy were 24 adenocarcinoma, 1 combined adeno-small cell carcinoma, and 7 malignant pleural mesothelioma (MPM), and 3 metastatic breast cancer. The diagnostic yield was significantly higher by pleural biopsy than by cell block [94.2% (33/35) vs. 71.4% (25/35); p = 0.008]. All patients with positive results on cell block also had positive results on pleural biopsy. Eight patients with negative results on cell block had positive results on pleural biopsy (lung adenocarcinoma in 4, sarcomatoid MPM in 3, and metastatic breast cancer in 1). Two patients with negative results on both cell block and pleural biopsy were diagnosed was sarcomatoid MPM by computed tomography-guided needle biopsy and epithelioid MPM by autopsy. Conclusion Pleural biopsy using flex-rigid pleuroscopy was efficient in the diagnosis of malignant pleural diseases. Flex-rigid pleuroscopy with pleural biopsy and pleural effusion cell block analysis should be considered as the initial diagnostic approach for malignant pleural diseases presenting with effusion.
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Affiliation(s)
- Shion Miyoshi
- Department of Endoscopy, Respiratory Endoscopy Division, National Cancer Center Hospital, Chuo-Ku, Tokyo, Japan
- Department of Respiratory Medicine, Toho University Omori Medical Center, Ota-Ku, Tokyo, Japan
| | - Shinji Sasada
- Department of Endoscopy, Respiratory Endoscopy Division, National Cancer Center Hospital, Chuo-Ku, Tokyo, Japan
- Department of Respiratory Medicine, Tokyo Saiseikai Central Hospital, Minato-Ku, Tokyo, Japan
- * E-mail:
| | - Takehiro Izumo
- Department of Endoscopy, Respiratory Endoscopy Division, National Cancer Center Hospital, Chuo-Ku, Tokyo, Japan
| | - Yuji Matsumoto
- Department of Endoscopy, Respiratory Endoscopy Division, National Cancer Center Hospital, Chuo-Ku, Tokyo, Japan
| | - Takaaki Tsuchida
- Department of Endoscopy, Respiratory Endoscopy Division, National Cancer Center Hospital, Chuo-Ku, Tokyo, Japan
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20
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Abstract
PURPOSE OF REVIEW Treatment of parapneumonic effusions (PPEs) is challenged by the decision of whether or not to insert chest tubes. This review focuses on the factors that may aid in determining which patients require an immediate drainage of the pleural space, that is, have a complicated PPE. RECENT FINDINGS Clinical guidelines advocate the evaluation of radiological (large effusion or loculation), bacteriological (Gram-positive stain or culture), biochemical (pH < 7.20 or glucose <60 mg/dl), and macroscopic (pus) characteristics of the pleural fluid to assist in the identification of complicated PPEs. In the past few years, a number of new pleural fluid biomarkers have been tested for the same purpose, but with the exception of C-reactive protein (CRP), they should be considered investigative. A pleural fluid CRP higher than 100 mg/l or a serum CRP higher than 200 mg/l, when combined with pleural fluid pH or glucose, may greatly increase our capability to predict the need for instituting tube thoracostomy. Although some ultrasonographic and computed tomography features favor the diagnosis of pleural infection, their role in uncomplicated-complicated PPE discrimination has not been systematically evaluated. SUMMARY No pleural fluid tests, other than pH or glucose, have gained wide acceptance for the assessment of patients with PPE. However, if corroborated with further studies, the measurement of pleural fluid or serum CRP, in combination with the classical fluid parameters, may have the potential to be incorporated into medical decision making.
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21
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Porcel JM, Azzopardi M, Koegelenberg CF, Maldonado F, Rahman NM, Lee YCG. The diagnosis of pleural effusions. Expert Rev Respir Med 2015; 9:801-15. [PMID: 26449328 DOI: 10.1586/17476348.2015.1098535] [Citation(s) in RCA: 49] [Impact Index Per Article: 5.4] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/30/2023]
Abstract
Pleural effusions arise from a variety of systemic, inflammatory, infectious and malignant conditions. Their precise etiological diagnosis depends on a combination of medical history, physical examination, imaging tests and pertinent pleural fluid analyses; including specific biomarkers (e.g., natriuretic peptides for heart failure, adenosine deaminase for tuberculosis, or mesothelin for mesothelioma). Invasive procedures, such as pleuroscopic biopsies, may be required for persistently symptomatic effusions which remain undiagnosed after the analysis of one or more pleural fluid samples. However, whenever parietal pleural nodularity or thickening exist, image-guided biopsies should first be attempted. This review addresses the current diagnostic approach to pleural effusions secondary to heart failure, pneumonia, cancer, tuberculosis and other less frequent conditions.
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Affiliation(s)
- José M Porcel
- a Pleural Medicine Unit, Department of Internal Medicine , Arnau de Vilanova University Hospital, Biomedical Research Institute of Lleida , Lleida , Spain
| | - M Azzopardi
- b Respiratory Department , Sir Charles Gairdner Hospital , Perth , Western Australia
| | - C F Koegelenberg
- c Division of Pulmonology, Department of Medicine , Stellenbosch University and Tygerberg Academic Hospital , Cape Town , South Africa
| | - F Maldonado
- d Division of Allergy, Pulmonary and Critical Care Medicine , Vanderbilt University , Nashville , TN , USA
| | - N M Rahman
- e Oxford Centre for Respiratory Medicine , Oxford University Hospitals NHS Trust , Oxford , UK
| | - Y C G Lee
- b Respiratory Department , Sir Charles Gairdner Hospital , Perth , Western Australia
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Letheulle J, Kerjouan M, Bénézit F, De Latour B, Tattevin P, Piau C, Léna H, Desrues B, Le Tulzo Y, Jouneau S. [Parapneumonic pleural effusions: Epidemiology, diagnosis, classification and management]. Rev Mal Respir 2015; 32:344-57. [PMID: 25595878 DOI: 10.1016/j.rmr.2014.12.001] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 12/21/2013] [Accepted: 11/13/2014] [Indexed: 10/24/2022]
Abstract
Parapneumonic pleural effusions represent the main cause of pleural infections. Their incidence is constantly increasing. Although by definition they are considered to be a "parapneumonic" phenomenon, the microbial epidemiology of these effusions differs from pneumonia with a higher prevalence of anaerobic bacteria. The first thoracentesis is the most important diagnostic stage because it allows for a distinction between complicated and non-complicated parapneumonic effusions. Only complicated parapneumonic effusions need to be drained. Therapeutic evacuation modalities include repeated therapeutic thoracentesis, chest tube drainage or thoracic surgery. The choice of the first-line evacuation treatment is still controversial and there are few prospective controlled studies. The effectiveness of fibrinolytic agents is not established except when they are combined with DNase. Antibiotics are mandatory; they should be initiated as quickly as possible and should be active against anaerobic bacteria except for in the context of pneumococcal infections. There are few data on the use of chest physiotherapy, which remains widely used. Mortality is still high and is influenced by underlying comorbidities.
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Affiliation(s)
- J Letheulle
- Service de maladies infectieuses et réanimation médicale, hôpital Pontchaillou, université de Rennes 1, 2, rue Henri-Le-Guilloux, 35033 Rennes cedex 9, France.
| | - M Kerjouan
- Service de pneumologie, hôpital Pontchaillou, université de Rennes 1, 35033 Rennes cedex 9, France
| | - F Bénézit
- Service de pneumologie, hôpital Pontchaillou, université de Rennes 1, 35033 Rennes cedex 9, France
| | - B De Latour
- Service de chirurgie thoracique, hôpital Pontchaillou, université de Rennes 1, 35033 Rennes cedex 9, France
| | - P Tattevin
- Service de maladies infectieuses et réanimation médicale, hôpital Pontchaillou, université de Rennes 1, 2, rue Henri-Le-Guilloux, 35033 Rennes cedex 9, France
| | - C Piau
- Laboratoire de bactériologie, hôpital Pontchaillou, université de Rennes 1, 35033 Rennes cedex 9, France
| | - H Léna
- Service de pneumologie, hôpital Pontchaillou, université de Rennes 1, 35033 Rennes cedex 9, France
| | - B Desrues
- Service de pneumologie, hôpital Pontchaillou, université de Rennes 1, 35033 Rennes cedex 9, France
| | - Y Le Tulzo
- Service de maladies infectieuses et réanimation médicale, hôpital Pontchaillou, université de Rennes 1, 2, rue Henri-Le-Guilloux, 35033 Rennes cedex 9, France
| | - S Jouneau
- Service de pneumologie, hôpital Pontchaillou, université de Rennes 1, 35033 Rennes cedex 9, France; IRSET UMR 1085, université de Rennes 1, 35043 Rennes cedex 9, France
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Breen DP, Daneshvar C. Role of interventional pulmonology in the management of complicated parapneumonic pleural effusions and empyema. Respirology 2014; 19:970-8. [PMID: 25039299 DOI: 10.1111/resp.12339] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 03/27/2014] [Revised: 04/07/2014] [Accepted: 05/06/2014] [Indexed: 02/01/2023]
Abstract
Pleural infection is a major problem that affects 80,000 cases per year in the UK and USA. It is increasing in incidence, and in an ageing population, it presents a complex challenge that requires a combination of medical therapies and may lead to the need for surgery. This article focuses on the role of the interventional pulmonologist in the diagnosis and management of pleural infection. In particular, we examine the role of pleural ultrasound in diagnostics, thoracocentesis and real-time guided procedures, and the current management strategies, including the controversial role of medical thoracoscopy.
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Affiliation(s)
- David P Breen
- Respiratory Department, Galway University Hospitals, Galway, Ireland
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Bielsa S, Valencia H, Ruiz-González A, Esquerda A, Porcel JM. Serum C-reactive protein as an adjunct for identifying complicated parapneumonic effusions. Lung 2014; 192:577-81. [PMID: 24913743 DOI: 10.1007/s00408-014-9606-5] [Citation(s) in RCA: 10] [Impact Index Per Article: 1.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 02/28/2014] [Accepted: 05/21/2014] [Indexed: 10/25/2022]
Abstract
INTRODUCTION Distinguishing non-purulent complicated parapneumonic pleural effusions (CPPE) from uncomplicated parapneumonic pleural effusions (UPPE) is challenging. We aimed to determine whether serum C-reactive protein (sCRP), alone or in combination with classical pleural fluid parameters, is useful in making such discrimination. METHODS The study was composed of a total of 104 consecutive patients, of whom 47 had UPPE and 57 had CPPE. Standard biochemical pleural fluid data along with sCRP were measured. RESULTS sCRP at the time of thoracentesis or chest tube insertion was significantly higher in CPPE (238 mg/L) than UPPE (147 mg/L). At the optimum cutoff value of 200 mg/L, sCRP had a sensitivity, specificity, likelihood ratio positive, likelihood ratio negative, and area under the receiver-operating characteristic curve for diagnosing CPPE of 58 %, 81 %, 3.1, 0.52, and 0.67, respectively. The combination of sCRP >200 mg/L with pleural fluid glucose <60 mg/dL using an "and" rule achieved a specificity of 98 %, whereas both parameters combined in an "or" rule had a sensitivity of 81 %, which was higher than that of pleural fluid pH (57 %) or glucose (54 %). CONCLUSIONS sCRP, when combined with classical pleural fluid biochemistries, improves the diagnostic accuracy in identifying those patients with non-purulent parapneumonic effusions who need chest drainage.
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Affiliation(s)
- Silvia Bielsa
- Pleural Diseases Unit, Department of Internal Medicine, Biomedical Research Institute of Lleida, Arnau de Vilanova University Hospital, Avda. Alcalde Rovira Roure 80, 25198, Lleida, Spain
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25
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Abstract
PURPOSE OF REVIEW This review analyzes the current literature available on appropriate measurement of pleural fluid pH and currently used methods of measurement. RECENT FINDINGS Current literature continues to support the superiority of blood gas analyzers (BGAs) in the accurate measurement of pleural fluid pH. Despite the compelling evidence, roughly 30-50% of the laboratories across the United States continue to use inaccurate methods for pleural fluid pH measurement. Nearly 40% of pulmonologists were incorrect in believing their laboratory uses BGA for the analysis of pleural fluid pH. SUMMARY It is apparent that the clinical utility of pleural fluid pH is often undermined by its inappropriate measurement. Physicians must be made aware of their laboratory's method of measurement if pleural fluid pH is to be used in the evaluation of pleural diseases. If pleural fluid pH measurement is not done accurately, then other pleural fluid characteristics may be used to aid the clinician.
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McCann FJ, Chapman SJ, Yu WC, Maskell NA, Davies RJO, Lee YCG. Ability of procalcitonin to discriminate infection from non-infective inflammation using two pleural disease settings. PLoS One 2012; 7:e49894. [PMID: 23251353 PMCID: PMC3520973 DOI: 10.1371/journal.pone.0049894] [Citation(s) in RCA: 23] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [Abstract] [MESH Headings] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/18/2012] [Accepted: 10/15/2012] [Indexed: 01/09/2023] Open
Abstract
UNLABELLED Procalcitonin has been shown to be useful in separating infection from non-infective disorders. However, infection is often paralleled by tissue inflammation. Most studies supporting the use of procalcitonin were confounded by more significant inflammation in the infection group. Few studies have examined the usefulness of procalcitonin when adjusted for inflammation.Pleural inflammation underlies the development of most exudative effusions including pleural infection and malignancy. Pleurodesis, often used to treat effusions, involves provocation of intense aseptic pleural inflammation. We conducted a two-part proof-of-concept study to test the specificity of procalcitonin in differentiating infection using cohorts of patients with pleural effusions of infective and non-infective etiologies, as well as subjects undergoing pleurodesis. METHODS We measured the blood procalcitonin level (i) in 248 patients with pleural infection or with non-infective pleural inflammation, matched for severity of systemic inflammation by C-reactive protein (CRP), age and gender; and (ii) in patients before and 24-48 hours after induction of non-infective pleural inflammation (from talc pleurodesis). RESULTS 1) Procalcitonin was significantly higher in patients with pleural infection compared with controls with non-infective effusions (n = 32 each group) that were case-matched for systemic inflammation as measured by CRP [median (25-75%IQR): 0.58 (0.35-1.50) vs 0.34 (0.31-0.42) µg/L respectively, p = 0.003]. 2) Talc pleurodesis provoked intense systemic inflammation, and raised serum CRP by 360% over baseline. However procalcitonin remained relatively unaffected (21% rise). 3) Procalcitonin and CRP levels did not correlate. In 214 patients with pleural infection, procalcitonin levels did not predict the survival or need for surgical intervention. CONCLUSION Using a pleural model, this proof-of-principle study confirmed that procalcitonin is a biomarker specific for infection and is not affected by non-infective inflammation. Procalcitonin is superior to CRP in distinguishing infection from non-infective pleural diseases, even when controlled for the level of systemic inflammation.
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Affiliation(s)
- Fiona J. McCann
- Oxford Centre for Respiratory Medicine and University of Oxford, Oxford, United Kingdom
| | - Stephen J. Chapman
- Oxford Centre for Respiratory Medicine and University of Oxford, Oxford, United Kingdom
| | - Wai Cho Yu
- Department of Medicine, Princess Margaret Hospital, Hong Kong, Special Administrative Region, People's Republic of China
| | - Nick A. Maskell
- North Bristol Lung Centre, Southmead Hospital, Bristol, United Kingdom
| | - Robert J. O. Davies
- Oxford Centre for Respiratory Medicine and University of Oxford, Oxford, United Kingdom
| | - Y. C. Gary Lee
- Oxford Centre for Respiratory Medicine and University of Oxford, Oxford, United Kingdom
- Centre for Asthma, Allergy and Respiratory Research, School of Medicine and Pharmacology, University of Western Australia, Perth, Australia
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Rosenstengel A. Pleural infection-current diagnosis and management. J Thorac Dis 2012; 4:186-93. [PMID: 22833824 DOI: 10.3978/j.issn.2072-1439.2012.01.12] [Citation(s) in RCA: 21] [Impact Index Per Article: 1.8] [Reference Citation Analysis] [Abstract] [Key Words] [Journal Information] [Subscribe] [Scholar Register] [Received: 01/24/2012] [Accepted: 01/26/2012] [Indexed: 11/14/2022]
Abstract
Pleural infection is a common and increasing clinical problem in thoracic medicine, resulting in significant morbidity and mortality. In recent years there has been a marked increase in interests and publications relating to evolving interventions and management options for pleural infection and empyema. Recently published research data as well as guidelines have suggested better approaches of radiological assessment, updated management algorithms for pleural infection, intrapleural adjunct therapies and re-examined the roles of biomarkers, pleural drainage techniques, and the role of surgery. This review highlights some of the recent advances and recommendations relevant to clinical care of pleural infection.
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Affiliation(s)
- Andrew Rosenstengel
- Clinical Pleural Fellow, Respiratory Dept, Sir Charles Gairdner Hospital, Perth WA 6009, Australia
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Bowling M, Lenz P, Chatterjee A, Conforti JF, Haponik EF, Chin R. Perception versus reality: the measuring of pleural fluid pH in the United States. ACTA ACUST UNITED AC 2012; 83:316-22. [PMID: 22327189 DOI: 10.1159/000335134] [Citation(s) in RCA: 8] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 08/08/2011] [Accepted: 11/15/2011] [Indexed: 11/19/2022]
Abstract
BACKGROUND Pleural fluid pH measured by a blood gas analyzer is the only recommended method of pH measurement to guide management for patients with parapneumonic pleural effusions. Not all hospitals use blood gas analyzers for pleural fluid pH determination and it is unknown if physicians are aware of this problem. OBJECTIVE To determine if a discrepancy exists between the modality used for measuring pleural fluid pH and how physicians believe it is measured. METHODS We surveyed pulmonologists randomly across the USA by e-mail inquiring how they thought pleural fluid pH was measured at their laboratory. We then independently contacted the laboratory and asked how pleural fluid pH was actually measured. RESULTS Two hundred and sixty-seven pulmonologists completed the survey. Eighty-six percent of the pulmonologists use pleural fluid pH to manage complicated parapneumonic effusions. Forty-three percent did not recognize blood gas analyzer solely as the most accurate and validated method. Thirty-nine percent of the physicians who use pleural pH to manage effusions and believe that blood gas analyzers are the most accurate were wrong in their assumption that their laboratory was using this tool for pleural pH measurement. CONCLUSIONS Whether it is due to inaccurate knowledge or a perception of how pleural fluid pH is tested, a significant number of pulmonologists, when treating complicated parapneumonic effusions, may be making management decisions based on erroneous information.
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Affiliation(s)
- Mark Bowling
- Division of Pulmonary, Critical Care and Sleep Medicine, Brody School of Medicine, University of East Carolina, Greenville, N.C. 27834, USA. bowlingm @ ecu.edu
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Porcel J, Light R. Parapneumonic pleural effusions and empyema in adults: current practice. Rev Clin Esp 2009; 209:485-94. [DOI: 10.1016/s0014-2565(09)72634-7] [Citation(s) in RCA: 17] [Impact Index Per Article: 1.1] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/27/2023]
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Abstract
PURPOSE OF REVIEW Pleural fluid pH measurement is important in the management of patients with exudative pleural effusions, especially in guiding treatment of parapneumonic effusions. Common variations in the method used to sample pleural fluid affect the accuracy of the value obtained. This article reviews the effects of these variations. RECENT FINDINGS Pleural fluid pH is decreased by exposure to acidic fluids, such as retention of local anesthetic or heparin in the syringe or sampling following infiltration of local anesthetic. Exposure of the sample to air leads to an increase in pH. If immediate analysis is not possible, delay of up to 4 h does not cause a significant change in pH, even when the sample is kept at room temperature. It is essential that a blood gas analyzer is used to obtain accurate pH measurement.These factors have less effect on the glucose concentration, which may be used to guide management if an accurate pH value is not available. SUMMARY Several common variables in collection method can lead to a clinically significant alteration in the pH value obtained. An evidence-based method for sampling and handling pleural fluid in order to obtain an accurate pH measurement is described.
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Santotoribio JD, Delgado-Pecellín C, León-Justel A, Guerrero JM. [Treatment indication with endothoracic drainage tube in parapneumonic effusions by partial pressure of carbon dioxide measurement in pleural fluid]. Med Clin (Barc) 2008; 131:130-3. [PMID: 18601824 DOI: 10.1157/13124099] [Citation(s) in RCA: 4] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/21/2022]
Abstract
BACKGROUND AND OBJECTIVE Parapneumonic effusions with pH < 7.20 or glucose < 0.40 g/l or lactate dehydrogenase (LDH) > 1000 U/l have indication of treatment with endothoracic drainage tube (EDT). The aim of the present study was to determine the accuracy of partial pressure of carbon dioxide (pCO2) measurement in pleural fluid for the subsequent treatment indication with EDT in parapneumonic effusions, by analyzing the area under curve ROC (AUC) and determining the optimal cut off value. PATIENTS AND METHOD 207 pleural fluids were studied. Glucose, LDH, pCO2, and pH were measured, and data concerning the etiology of pleural effusion and whether EDT treatment was needed were collected after patients were discharged from hospital. RESULTS Forty-six out of 207 pleural fluids studied were parapneumonic effusions. Thirty-two were treated with EDT. AUC values were 0.888 (p < 0.0001), 0.890 (p < 0.0001), 0.816 (p < 0.0001), and 0.801 (p < 0.0001) for pCO2, pH, glucose, and LDH, respectively. No significant differences were found among them. Optimal cut off value for pCO2 was 48.6 mmHg, exhibiting 90.6% sensitivity and 78.6% specificity. All parapneumonic effusions showing pCO2 > 60.9 mmHg were treated with EDT. Remarkably, 3 out of 46 parapneumonic effusions (6.5%) that had been improperly treated following pH, glucose or LDH values, were correctly treated following pCO2. CONCLUSIONS pCO2 determination in pleural fluid appears to be the best way to decide the indication of EDT in parapneumonic effusions.
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Affiliation(s)
- José Diego Santotoribio
- Servicio de Bioquímica Clínica, Hospitales Universitarios Virgen del Rocío, Sevilla, España.
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Rahman NM, Mishra EK, Davies HE, Davies RJO, Lee YCG. Clinically important factors influencing the diagnostic measurement of pleural fluid pH and glucose. Am J Respir Crit Care Med 2008; 178:483-90. [PMID: 18556632 DOI: 10.1164/rccm.200801-062oc] [Citation(s) in RCA: 53] [Impact Index Per Article: 3.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/16/2022] Open
Abstract
RATIONALE Accurate pleural fluid pH and glucose measurement is a key component in the diagnosis and management of patients with pleural effusion. Standardized methods of pleural fluid collection have not been defined. OBJECTIVES To assess the effect of common clinical factors that may distort measurement accuracy of pleural fluid pH and glucose. METHODS Ninety-two exudative pleural aspirates were collected in commercially available blood gas syringes. MEASUREMENTS AND MAIN RESULTS Samples were analyzed immediately using a blood gas analyzer. The effects of residual air, lidocaine, heparin, and delay in analysis (24 h) on pH and glucose measurement accuracy were assessed. Pleural fluid pH was significantly increased by residual air (mean +/- SD, 0.08 +/- 0.07; 95% confidence interval [CI], 0.06 to 0.09; P < 0.001) and significantly decreased by residual lidocaine (0.2 ml; mean change in pH, -0.15 +/- 0.09; 95% CI, -0.13 to -0.18; P < 0.001) and residual heparin (mean change in pH, -0.02 +/- 0.05; 95% CI, -0.01 to -0.04; P = 0.027). Pleural fluid pH was stable at room temperature for 1 hour and significantly increased at 4 (mean +/- SD, 0.03 +/- 0.07; 95% CI, 0.01 to 0.04; P = 0.003) and 24 hours (0.05 +/- 0.12; 95% CI, 0.03 to 0.08; P < 0.001). Pleural fluid glucose concentration was not clinically significantly altered by residual air, lidocaine (up to 0.4 ml), or 24-hour analysis delay. CONCLUSIONS Accuracy of measured pleural pH is critically dependent on sample collection method. Residual air, lidocaine, and analysis delay significantly alter pH and may impact on clinical management. Pleural fluid glucose concentration is not significantly influenced by these factors. Protocols defining appropriate sampling and analysis methods are needed.
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Affiliation(s)
- Najib M Rahman
- Oxford Centre for Respiratory Medicine and University of Oxford, Oxford, United Kingdom
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Villena Garrido V, Ferrer Sancho J, Hernández Blasco L, de Pablo Gafas A, Pérez Rodríguez E, Rodríguez Panadero F, Romero Candeira S, Salvatierra Velázquez A, Valdés Cuadrado L. [Diagnosis and treatment of pleural effusion]. Arch Bronconeumol 2007. [PMID: 16945266 DOI: 10.1157/13090586] [Citation(s) in RCA: 64] [Impact Index Per Article: 3.8] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/14/2022]
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Villena Garrido V, Ferrer Sancho J, Hernández Blasco L, de Pablo Gafas A, Pérez Rodríguez E, Rodríguez Panadero F, Romero Candeira S, Salvatierra Velázquez A, Valdés Cuadrado L. [Diagnosis and treatment of pleural effusion]. Arch Bronconeumol 2007; 42:349-72. [PMID: 16945266 DOI: 10.1016/s1579-2129(06)60545-4] [Citation(s) in RCA: 32] [Impact Index Per Article: 1.9] [Reference Citation Analysis] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/29/2022]
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Chen SC, Chen W, Hsu WH, Yu YH, Shih CM. Role of pleural fluid C-reactive protein concentration in discriminating uncomplicated parapneumonic pleural effusions from complicated parapneumonic effusion and empyema. Lung 2006; 184:141-5. [PMID: 16902838 DOI: 10.1007/s00408-005-2573-0] [Citation(s) in RCA: 22] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Accepted: 09/21/2005] [Indexed: 12/01/2022]
Abstract
The aim of this study was to determine whether pleural fluid C-reactive protein (CRP) is useful in distinguishing complicated parapneumonic pleural effusion (CPPE) and empyema from uncomplicated parapneumonic pleural effusions (UPPE). A total of 69 consecutive patients with parapneumonic effusions were enrolled in the study: 29 with UPPE, 29 with CPPE, and 11 with empyema. Concentrations of standard biochemical parameters together with CRP in the pleural fluid were measured using an immunoturbidimetric assay. Pleural CRP was significantly higher in CPPE (11.6 mg/dl) and in empyema (12.2 mg/dl) than in UPPE (3.9 mg/dl). A cutoff value of 8.7 mg/dl for pleural CRP in the diagnosis of CPPE and empyema resulted in a sensitivity, specificity, and area under the receiver-operating characteristic curve (AUC) of 0.80, 0.97 and 0.94, respectively. Traditional lactic dehydrogenase (LDH) > or = 1000 U/L and glucose < or = 60 mg/dl can differentiate CPPE and empyema from UPPE, with the sensitivity, specificity, and AUC achieving 0.75/0.60.1.00/1.00,0.95/0.22, respectively. However, for the detection of CPPE and empyema, the combination of pleural fluid CRP > or = 8.7 mg/dl and LDH > or = 1000 U/L was valuable in achieving a sensitivity, specificity, and AUC of 0.97/1,00/0.95. This study suggests that measurement of pleural CRP can be useful in the workup of patients with a parapneumonic effusion in order to differentiate CPPE from UPPE.
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Affiliation(s)
- S C Chen
- Division of Pulmonary and Critical Care Medicine, Department of Internal Medicine, China Medical University Hospital, No. 2, Yuh-Der Road, Taichung City 404, Taiwan
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Kurt BA, Winterhalter KM, Connors RH, Betz BW, Winters JW. Therapy of parapneumonic effusions in children: video-assisted thoracoscopic surgery versus conventional thoracostomy drainage. Pediatrics 2006; 118:e547-53. [PMID: 16908618 DOI: 10.1542/peds.2005-2719] [Citation(s) in RCA: 94] [Impact Index Per Article: 5.2] [Reference Citation Analysis] [Abstract] [MESH Headings] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Indexed: 11/24/2022] Open
Abstract
OBJECTIVE Controversy surrounds the optimal treatment of parapneumonic effusions. This trial of pediatric patients with community-acquired pneumonia and associated parapneumonic processes compared primary video-assisted thoracoscopic surgery with conventional thoracostomy drainage. DESIGN A prospective, randomized trial was conducted at DeVos Children's Hospital (Grand Rapids, MI) between November 2003 and May 2005. All of the patients under 18 years of age with large parapneumonic effusions were approached for enrollment in the study. After enrollment, each patient was randomly assigned to receive either video-assisted thoracoscopic surgery or thoracostomy tube drainage of the effusion. Subsequent therapies (fibrinolysis, imaging, and further drainage procedures) were similar for each group per protocol. RESULTS Eighteen patients were enrolled in the study: 10 in video-assisted thoracoscopic surgery and 8 in conventional thoracostomy. The groups were demographically similar. No mortalities were encountered in either group, and everyone was discharged from the hospital with acceptable outcomes. Yet, there were multiple variables that demonstrated statistical difference. Hospital length of stay, number of chest tube days, narcotic use, number of radiographic procedures, and interventional procedures were all less in the patients who underwent primary video-assisted thoracoscopic surgery. In addition, no patient in the video-assisted thoracoscopic surgery group required fibrinolytic therapy, which was also statistically different from the thoracostomy drainage group. CONCLUSIONS The outcomes of this study strongly suggest that primary video-assisted thoracoscopic surgery for evacuation of parapneumonic effusions is superior to conventional thoracostomy drainage.
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Affiliation(s)
- Beth A Kurt
- Department of Pediatrics, DeVos Children's Hospital, 100 Michigan St NE, MC 117, Grand Rapids, Michigan 49503, USA
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Abstract
Parapneumonic effusion is a common clinical problem, and those that go on to develop pleural infection have high morbidity and mortality. The process of pleural infection evolution involves changes in pleural physiology that are increasingly being elucidated and understood. The microbiology of pleural infection has changed over recent years, with clear differences emerging between hospital- and community-acquired infections. Using biochemical surrogates of infection, chest drainage can be undertaken rationally for those who do not respond to antibiotics alone. Recent data suggest that fibrinolytics do not influence outcomes in pleural infection. The optimal type and timing of surgery remain controversial.
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Affiliation(s)
- Najib M Rahman
- Oxford Pleural Diseases Unit, Oxford Centre for Respiratory Medicine, Churchill Hospital Site, Oxford Radcliffe Hospital, Headington, Oxford OX3 7LJ, UK.
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Abstract
Imaging plays an important role in the diagnosis and subsequent management of patients with pleural disease. The presence of a pleural abnormality is usually suggested following a routine chest x-ray, with a number of imaging modalities available for further characterization. This article describes the radiographic and cross-sectional appearances of pleural diseases, which are commonly encountered in every day practice. The conditions covered include benign and malignant pleural thickening, pleural effusions, empyema and pneumothoraces. The relative merits of CT, MRI and PET in the assessment of these conditions and the role of image-guided intervention are discussed.
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Affiliation(s)
- Nagmi R Qureshi
- Department of Radiology, Churchill Hospital, Headington, Oxford OX3 7LJ, UK.
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Welte T. [Management of nosocomial pneumonia-state of the art]. INTENSIVMEDIZIN + NOTFALLMEDIZIN : ORGAN DER DEUTSCHEN UND DER OSTERREICHISCHEN GESELLSCHAFT FUR INTERNISTISCHE INTENSIVMEDIZIN, DER SEKTION NEUROLOGIE DER DGIM UND DER SEKTION INTENSIVMEDIZIN IM BERUFSVERBAND DEUTSCHER INTERNISTEN E.V 2006; 43:301-309. [PMID: 32287633 PMCID: PMC7101873 DOI: 10.1007/s00390-006-0721-2] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.1] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Download PDF] [Subscribe] [Scholar Register] [Received: 03/01/2006] [Accepted: 03/28/2006] [Indexed: 12/03/2022]
Abstract
Nosocomial pneumonia is among the most frequent infections in the intensive care unit with high morbidity and mortality. The decisive factor for treatment failure is inadequate previous antibiotic treatment. Broad spectrum and sufficiently high dosed initial treatment is crucial.To prevent further resistances, the antibiotic treatment must be evaluated early. Depending on the treatment success, treatment has to be changed or terminated. Deescalation is possible and sensible after three days. A treatment period of seven days should not routinely be exceeded. The treatment recommendations should be adapted to local resistances and the local statistics of frequent pathogens. A further factor for treatment decision-making is the risk analysis of the patient (previous treatment, stays in hospitals or nursing homes, concomitant diseases).
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Affiliation(s)
- T. Welte
- Abteilung Pneumologie, Medizinische Hochschule Hannover, Carl-Neuberg-Str. 1, 30625 Hannover
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Abstract
Pleural disease remains a commonly encountered clinical problem for both general physicians and chest specialists. This review focuses on the investigation of undiagnosed pleural effusions and the management of malignant and parapneumonic effusions. New developments in this area are also discussed at the end of the review. It aims to be evidence based together with some practical suggestions for practising clinicians.
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Affiliation(s)
- A R Medford
- Southmead Hospital, Acute Lung Unit, Southmead Hospital, Bristol, UK
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