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1.
Xianghui Zheng Yang Zheng Jing Ma Maomao Zhang Yongxiang Zhang Xianglan Liu Liangqi Chen Qingyuan Yang Yong Sun Jian Wu Bo Yu 《Heart & lung : the journal of critical care》2019,48(1):1-7
Background
Cardiac rehabilitation (CR) has been shown to provide the best social, psychological and physical conditions for patient recovery after myocardial infarction (MI).Objectives
The aim of present study was to quantify the efficacy of exercise-based CR treatments in terms of relief from symptoms of anxiety and depression symptoms among patients with MI.Methods
Literature published up to August 2017 was reviewed systematically using relevant keywords, MeSH terms, and Emtree headings to search PubMed, Embase, CINAHL (Ebsco), Cochrane Central Register of Controlled Trials (CENTRAL) and Web of Science. The results of included studies were compared meta-analytically.Results
We found that exercise-based CR had a significant effect on decreasing anxiety and depression scores. Furthermore, exercise-based CR may alleviate anxiety and depressive symptoms at different time periods.Conclusions
For patients with MI, exercise-based CR has been demonstrated to alleviate anxiety and depressive symptoms. These findings highlight CR as essential and beneficial for minimizing MI patient anxiety and depression during recovery. 相似文献2.
Emily C. Gathright Carly M. Goldstein Eric B. Loucks Andrew M. Busch Loren Stabile Wen-Chih Wu 《Heart & lung : the journal of critical care》2019,48(1):13-17
Purpose
Most cardiac rehabilitation (CR) completers improve in multiple functional and psychosocial domains. However, not all demonstrate uniform improvement in functional indicators such as exercise capacity. This study examined baseline predictors and correlates of change in exercise capacity from CR intake to completion.Methods
CR participants (n?=?488) completed assessment of metabolic equivalents (METs) via treadmill stress test, depressive symptoms, quality of life, and social support at intake and discharge. Associations between demographic, clinical, and psychosocial factors and MET changes was tested with linear regression.Results
METs increased from intake to discharge (1.91 ± 1.48, p < .001). Younger age (p < .001), lower BMI (p < .001), and lower weight (p < .01) were associated with greater MET change. Greater percentage weight loss (p < .05), and self-reported improvements in physical functioning (p < .001) and bodily pain (p < .01) were concurrently related to MET change.Conclusions
Older CR attendees and those with higher baseline BMI may benefit from tailored intervention to ensure maximum benefit in exercise capacity. 相似文献3.
Ruohui Wang Changkun Pan Xiaokun Wang Feng Xu Shuang Jiang Ming Li 《Heart & lung : the journal of critical care》2019,48(1):46-54
Background
The optimal timing of tracheotomy in critically ill ventilated patients remains controversial.Objectives
The objective of this meta-analysis was to assess tracheotomy timing for critically ill ventilated patients and determine the outcomes’ reliability.Methods
We searched PubMed, Embase, and the Cochrane Library for randomized controlled trials.Results
Compared with late tracheotomy, early tracheotomy presented a lower incidence of ventilator-associated pneumonia (VAP), shorter duration of mechanical ventilation (MV), and shorter intensive care unit (ICU) stay. However, trial sequential analysis (TSA), a kind of cumulative meta-analysis, indicated that the evidence was unreliable and inconclusive.Conclusions
The Findings suggest that early tracheotomy seems to be associated with a lower incidence of VAP, shorter duration of MV, shorter duration of sedation, and shorter ICU stay. However, the apparent benefits revealed in traditional meta-analysis contrast with the post-TSA results. More fully powered, randomized controlled trials focused on the outcomes of tracheotomy are highly warranted. 相似文献4.
Dong Kyu Oh Jong-Min Song Duk-Woo Park Sang Young Oh Jin-Sook Ryu Jaewon Lee Sang Do Lee Jae Seung Lee 《Heart & lung : the journal of critical care》2019,48(1):28-33
Background
Although guidelines have recommended that patients with chronic thromboembolic pulmonary hypertension (CTEPH) should be managed by a multidisciplinary team (MDT), there is a lack of clinical data indicating that the MDT improves CTEPH management.Objectives
The study aimed to identify the effect of an MDT on CTEPH management.Methods
We divided the study period into pre-MDT and post-MDT eras and compared the implementation rates of major diagnostic and therapeutic procedures.Results
Of 116 patients with CTEPH, 42 (36.2%) were diagnosed in the post-MDT era. The implementation rates of right heart catheterization (10.8% vs. 97.6%, p < 0.001) and pulmonary endarterectomy (32.4% vs. 59.5%, p < 0.005) were significantly increased in the post-MDT era. Balloon pulmonary angioplasty was not performed in the pre-MDT era but was performed in the post-MDT era.Conclusions
The MDT appears to be associated with improved CTEPH management. 相似文献5.
Stefanos Despotopoulos Anastasios Roumeliotis Nicholas G. Kounis Grigorios Tsigkas George Hahalis Periklis Davlouros 《Heart & lung : the journal of critical care》2019,48(2):138-140
Background
Kounis syndrome is a systemic complication following an allergic reaction, presenting with coronary artery spasm or thrombosis and occasionally with stent thrombosis that can have fatal outcome.Objectives
Heparins can induce allergic reactions via tissue antigenicity, heparin induced thrombocytopenia and contact system-activating effects of contaminants but allergy bivalirudin has not been reported so far.Methods
Herein, we describe a patient with fatal acute coronary in-stent thrombosis following an allergic reaction soon after an intra-arterial heparin dose and intravenous administration of bivalirudin during angioplasty.Results
The patient received intense myocardial infarction protocol treatment including angioplasty and defibillation together with antiallergic therapy but despite all of these efforts and measures, he succumbed 2 h later.Conclusions
Significant suspicion should be raised that life saving drugs such as heparin and bivalirudin could join forces with concurrent medication acting as antigens and induce fulminant and fatal stent thrombosis as a manifestation of Kounis syndrome 相似文献6.
Beatriz S. Ribeiro Agnaldo J. Lopes Sara L.S. Menezes Fernando S. Guimarães 《Heart & lung : the journal of critical care》2019,48(1):39-45
Background
Ventilator hyperinflation (VHI) is effective in improving respiratory mechanics, secretion removal, and gas exchange in mechanically ventilated subjects; however, there are no recommendations for the best ventilator settings to perform the technique.Objective
To compare six modes of VHI, concerning physiological markers of efficacy and safety criteria to support the selection of optimal settings.Methods
Thirty mechanically ventilated patients underwent six modes of VHI in a randomized order. The delivered volume, expiratory flow bias criteria, overdistension, patient–ventilator asynchronies and hemodynamic variables were assessed during the interventions.Results
Volume-controlled ventilation with inspiratory flow of 20 lpm (VC-CMV20) and pressure support ventilation (PSV) achieved the best effectiveness scores (P?<?0.05). The target peak pressure of 40 cmH2O was associated with a high incidence of overdistension. PSV showed a lower incidence of patient–ventilator asynchronies.Conclusions
The modes VC-CMV20 and PSV are the most effective for VHI. Alveolar overdistension and patient–ventilator asynchronies must be considered when applying VHI. 相似文献7.
Noelle V. Pavlovic Tania Randell Tim Madeira Steven Hsu Radoslav Zinoviev Martha Abshire 《Heart & lung : the journal of critical care》2019,48(2):90-104
Background
Left ventricular assist devices (LVADs) improve quality of life in end-stage heart failure but can cause serious complications such as infections with driveline infection causing significant morbidity and mortality.Objectives
The purpose of this systematic literature review is to synthesize the literature to determine variables associated with driveline infection and seek opportunities to improve nursing management of LVAD drivelines.Methods
A systematic literature review was performed. The evidence was synthesized using the Johns Hopkins Nursing Evidence-Based Practice tools and the Chain of Infection epidemiological framework.Results
Thirty-four studies focused on vulnerable host, portal of entry, and causative organism aspects of the Chain of Infection. Increased BMI, younger age, exposed driveline velour showed increased risk of infection and driveline dressing protocol change showed lower risk of infection.Conclusions
Although some risk factors for infection were identified, evidence is still limited. Nurses are uniquely positioned to improve driveline management, disrupting the chain of infection. 相似文献8.
Kathleen A.N. Aithinne Casey W. Cooper Robert A. Lynch David L. Johnson 《American journal of infection control》2019,47(5):515-520
Introduction
Clostridium difficile is the leading cause of health care–associated gastric illness. Environmental contamination with C difficile spores is a risk factor for contact transmission, and toilet flushing causes such contamination. This work explores toilet contamination persistence and environmental contamination produced over a series of flushes after contamination.Methods
A flushometer toilet was seeded with C difficile spores in a sealed chamber. The toilet was flushed 24times, with postflush bowl water samples and settle plates periodically collected for culturing and counting. Air samples were collected after each of 12 flushes using rotating plate impactors.Results
Spores were present in bowl water even after 24 flushes. Large droplet spore deposition accumulated over the 24-flush period. Droplet nuclei spore bioaerosol was produced over at least 12 flushes.Conclusions
Toilets contaminated with C difficile spores are a persistent source of environmental contamination over an extended number of flushes. 相似文献9.
Adelita Tinoco David W. Mortara Xiao Hu Cass Piper Sandoval Michele M. Pelter 《Heart & lung : the journal of critical care》2019,48(2):114-120
Background
Cheyne-Stokes respiration and periodic breathing (CSRPB) have not been studied sufficiently in the intensive care unit setting (ICU).Objectives
To determine whether CSRPB is associated with adverse outcomes in ICU patients.Methods
The ICU group was divided into quartiles by CSRPB (86 patients in quartile 1 had the least CSRPB and 85 patients in quartile 4 had the most CSRPB). Adverse outcomes (emergent intubation, cardiorespiratory arrest, inpatient mortality and the composite of all) were compared between patients with most CSRPB (quartile 4) and those with least CSRPB (quartile 1).Results
ICU patients in quartile 4 had a higher proportion of cardiorespiratory arrests (5% versus 0%, (p=.042), and more adverse events over all (19% versus 8%, p=.041) as compared to patients in quartile 1.Conclusions
CSRPB can be measured in the ICU and it's severity is associated with adverse outcomes in critically ill patients. 相似文献10.
Qingyan Zhang Miao Zhang Cheng Sun Hengjin Wang Tianfeng Tang Yangyang Xia Qiuyuan Shao Jing Liu Chunming Jiang 《The American journal of the medical sciences》2019,357(4):311-315
Background
Cell adhesion molecules have been documented to be elevated in numerous immune inflammatory diseases. Minimal change disease (MCD) is an immune disorder. This study aimed to evaluate whether levels of soluble vascular cell adhesion molecule-1 (sVCAM-1) and soluble E-selectin (sE-selectin) reflect disease activity in adult-onset MCD.Methods
A sandwich enzyme-linked immunosorbent assay was used to measure the soluble adhesion molecules in 40 patients with nephrotic-range proteinuria and biopsy-proven MCD, obtained at the time of diagnosis and during remission. Thirty-five age- and sex-matched healthy volunteers served as controls.Results
Patients with MCD during the active stage showed significantly higher levels of sVCAM-1 and sE-selectin when compared to controls. Moreover, sVCAM-1 had significantly positive correlations with both urine protein and serum cholesterol, and was negatively associated with serum albumin. Multiple analyses showed that serum albumin was an independent predictor of sVCAM-1. The correlations between sE-selectin and other clinical parameters were not statistically significant. At follow-up, these markers systematically decreased as the disease went into remission, but the increase in sVCAM-1 persisted even in patients obtaining complete remission for 6 months.Conclusions
Patients with active MCD had increased levels of sVCAM-1 and sE-selectin. The correlation between sVCAM-1 and proteinuria, serum albumin and cholesterol and its decline during remission indicate that sVCAM-1 is associated with disease activity. 相似文献11.
Melisa R. Chang Neha Chopra David Beenhouwer Matthew B. Goetz Guy W. Soo Hoo 《The American journal of medicine》2019,132(1):110-113
Background
There is limited data suggesting that recovery from severe pulmonary infection with Coccidioides may be hastened by the addition of systemic corticosteroids.Methods
We present a case report of 2 patients with persistent and progressive coccidioidomycosis who demonstrated a dramatic response to adjunctive corticosteroid therapy.Results
Both patients had Coccidioides immitis cultured from respiratory samples. One was a 69-year-old man who had been treated with combination fluconazole and liposomal amphotericin for over 6 weeks, with persistent fever and pneumonia. The other was a 61-year-old man treated with fluconazole and then amphotericin for 3 weeks, with progression to acute respiratory distress syndrome and shock. Both received short courses of intravenous methylprednisolone and recovered to be discharged home.Conclusions
As opposed to associated hypersensitivity, corticosteroid treatment in these cases was directed at modulating the ongoing destructive effects of unchecked inflammation. Rapid improvement was noted in both cases and raises the possibility that the addition of systemic corticosteroids may hasten recovery in patients with severe coccidioidomycosis. 相似文献12.
Hester Groenewegen Wouter F.W. Bierman Konstantina Delli Pieter U. Dijkstra Willem Nesse Arjan Vissink Frederik K.L. Spijkervet 《The Journal of infection》2019,78(3):171-177
Objective
To assess periodontitis prevalence and severity in HIV infected patients as compared to controls. Furthermore, to assess whether HIV infection characteristics are associated with periodontitis.Design
cross-sectional controlled study.Methods
We assessed prevalence and severity of periodontitis in 258 HIV-infected patients and 539 historical controls with the Dutch Periodontal Screening Index (DPSI). HIV characteristics were collected from medical charts. Age-related diseases and oral care were assessed with questionnaires.Results
Severe periodontitis (DPSI 4) was more prevalent in HIV-infected patients than in controls (66% vs. 36%, p?=?0.002). HIV-infection, increasing age and male sex were significant risk factors for severe periodontitis. In particular, older male HIV patients have a higher risk of severe periodontitis. Clinical, immunological and virologic characteristics, and antiretroviral therapy were not associated with periodontitis prevalence or severity. HIV-infected patients rate the importance of their oral health as high, although many do not disclose their HIV infection to their dentists.Conclusions
Prevalence and severity of periodontitis are higher in HIV-infected patients compared to controls, particularly in older males. Awareness of the increased prevalence of periodontitis associated with HIV-infection among patients and health-care professionals could significantly improve oral health and quality of life of HIV-infected patients. 相似文献13.
Yun-Hua Kuo Tze-Fang Wang Li-Kuo Liu Wei-Ju Lee Li-Ning Peng Liang-Kung Chen 《The American journal of the medical sciences》2019,357(2):124-133
Background
Sarcopenia is a well-recognized geriatric syndrome. We sought to determine the prevalence of sarcopenia and factors associated with it among community-dwelling older adults in Taiwan.Methods
A cross-sectional study was conducted in Yuanshan Township, Yilan County, Taiwan. Data of 731 community-dwelling adults aged 65 and older were evaluated. Demographic characteristics, anthropometry, medical history, biochemistry results, and dual-energy X-ray absorptiometry results were collected for analysis.Results
Males had a higher rate of sarcopenia than did females and had lower values for body weight, body mass index, waist circumference, percentage of body fat, and lean body mass. Poor nutritional status as determined by the Mini Nutritional Assessment correlated positively with markers for sarcopenia. Levels of vitamin D and folic acid correlated positively with some sarcopenia markers.Conclusions
Gender differences and nutritional factors may influence the development of sarcopenia. Vitamin D is positively correlated with relative appendicular skeletal muscle mass in males with sarcopenia, and folic acid was positively correlated with gait speed in females with sarcopenia. 相似文献14.
Sara Muller Samantha Hider Annabelle Machin Rebecca Stack Richard A Hayward Karim Raza Christian Mallen 《Seminars in arthritis and rheumatism》2019,48(5):815-820
Background
Rheumatoid arthritis (RA) has articular and non-articular manifestations. Early, intensive treatment has substantial benefit for both. This requires patients be identified as soon as symptoms develop.Objectives
To determine whether selected signs and symptoms can be identified in the primary care records of patients prior to a formal diagnosis of RA being made and, if so, how early they can be identified.Methods
A case-control study was constructed within the UK Clinical Practice Research Datalink (CPRD). 3577 individuals with ‘definite’ RA, were matched to 14,287 individuals without inflammatory arthritis. An index date was established (i.e., date general practitioner (GP) first appeared to suspect RA). Rates of consultation and consultations for suspected early RA symptoms were compared in cases and controls in the two years prior to the index date using conditional logistic regression, adjusted for number of consultations.Results
The mean (standard deviation) age of participants was 58.8 (14.5) years and 66.8% were female. Rates of any consultation were significantly higher in RA cases than in controls for at least two years prior to the index date. Cases were more likely to have a pre-diagnosis coded consultation for joint, and particularly hand symptoms (aOR 11.44 (9.60, 13.63)), morning stiffness (8.10 (3.54, 18.5)), carpal tunnel syndrome (4.57 (3.54, 5.88)) and other non-articular features.Conclusions
In patients who develop RA, GP consultation rates are higher for at least two years prior to the first recorded suspicion of RA. This study highlights symptoms that should raise a GP's index of suspicion for RA. 相似文献15.
Antonia Scobie Sanch Kanagarajah Ross J. Harris Lisa Byrne Corinne Amar Kathie Grant Gauri Godbole 《The Journal of infection》2019,78(3):208-214
Listeriosis
is a foodborne illness that can result in septicaemia, Central Nervous System (CNS) disease, foetal loss and death in high risk patients.Objectives
To analyse the demographic trends, clinical features and treatment of non-perinatal listeriosis cases over a ten year period and identify mortality-associated risk factors.Methods
Reported laboratory-confirmed non-pregnancy associated cases of listeriosis between 2006 and 2015 in England were included and retrospectively analysed. Multivariate logistic regression analysis was performed to determine independent risk factors for mortality.Results
1357/1683 reported cases met the inclusion criteria. Overall all-cause mortality was 28.7%; however, mortality rates declined from 42.1% to 20.2%. Septicaemia was the most common presentation 69.5%, followed by CNS involvement 22.4%. CNS presentations were significantly associated with age?<?50 years, and septicaemia with older age. Age?>?80 years (OR 3.32 95% CI 1.92–5.74), solid-organ malignancy (OR 3.42 95% CI 2.29-5.11), cardiovascular disease (OR 3.30 95% CI 1.64–6.63), liver disease (OR 4.61 95% CI 2.47–8.61), immunosuppression (OR 2.12 95% CI 1.40-3.21) and septicaemia (OR 1.60 95% CI 1.17–2.20) were identified as independent mortality risk factors.Conclusions
High risk groups identified in this study should be the priority focus of future public health strategies aimed at reducing listeriosis incidence and mortality. 相似文献16.
Juan Jiang Chengping Hu Yuanyuan Li Pinhua Pan Xiaoli Su Pengbo Deng Junpu Wang Xiaoying Wu 《The American journal of the medical sciences》2019,357(4):289-295
Background
Severe pneumonia is responsible for great mortality and morbidity worldwide, and early-applied effective anti-infective therapy can improve the prognosis of patients. However, identification of infectious agents in severe pneumonia remains a major challenge so far. In this study, the potential utility of transmission electron microscopy (TEM) in detecting nonbacterial pathogens in patients with severe pneumonia was retrospectively evaluated.Materials and Methods
A total of 106 patients diagnosed with severe pneumonia at our hospital from September 2015 to December 2017 were included, and their baseline clinical characteristics were collected. Nonbacterial infectious agents detected by TEM in bronchoalveolar lavage fluid (BALF) and serological tests were summarized. The detection rates were further compared between TEM and serological tests.Results
BALF examination under the transmission electron microscope revealed 24 viruses, 16 mycoplasmas, 18 chlamydia, 2 fungi and 74 bacteria in 99 samples, among which 61 samples were mixed infections. The combined use of serological tests and TEM significantly improved the detection rate of nonbacterial infectious agents in patients with severe pneumonia.Conclusions
Our data support that implementation of TEM could improve the sensitivity for detecting viruses, atypical pathogens and mixed infections in BALF from patient of severe pneumonia. Therefore, TEM may be used as an auxiliary diagnostic method of other microbiological tests in severe pneumonia. 相似文献17.
Yueguang Li Tao Song Zhen Chen Yao Wang Juyuan Zhang Ximo Wang 《The American journal of the medical sciences》2019,357(1):16-22
Background
This study aimed to investigate the correlation between pancreatic stellate cell activation, matrix metallopeptidase 2 (MMP2) expression and lymph node metastasis in pancreatic carcinoma.Methods
Alpha-smooth muscle actin (ACTA2), Desmin (DES) and MMP2 were detected in 40 pancreatic carcinoma patients and 10 cases of normal pancreas tissues using immunohistochemistry. Then MMP2 and ACTA2 expression profiles in pancreatic cancer were obtained from UCSC (University of California, Santa Cruz) and SurvExpress.Results
A total of 67.5% and 55.0% of cases positively expressed ACTA2 and DES in pancreatic carcinoma, respectively. MMP2 in pancreatic carcinoma was expressed in 55.0% of cases, and there were significant differences between the lymph node metastasis group and the lymph node nonmetastasis group, as well as invasion and noninvasion to the peripheral tissue group (P < 0.01). High throughput sequencing databases verified that ACTA2 and MMP2 gene expression were both upregulated in pancreatic carcinoma tissues.Conclusions
The coexpression of ACTA2 and DES was related to the expression of MMP2, and positively correlated with lymph node metastasis. Activation of pancreatic stellate cells may promote the expression of MMP2 and enhance the invasion and metastasis of pancreatic carcinoma. 相似文献18.
Quan M. Bui Oscar O. Braun Michela Brambatti Yan K. Gernhofer Holly Hernandez Victor Pretorius Eric Adler 《Heart & lung : the journal of critical care》2019,48(2):85-89
Background
The Stanford integrated psychosocial assessment for transplantation (SIPAT) is a validated psychosocial evaluation tool in the transplant population.Objective
We evaluated SIPAT in predicting post-left ventricular assist device (LVAD) outcomes, including cumulative re-admissions, driveline infections, pump malfunction, pump thrombosis, gastrointestinal bleeding, major bleeding, stroke and right ventricular failure.Methods
This retrospective study included 50 LVAD patients at an academic institution in the United States who had a pre-implant SIPAT score during the years 2015-2017. Patients were split into two groups based on SIPAT score, separating a “excellent”/“good” from a “minimally acceptable”/“poor” candidate. Poisson regression, using SIPAT as both a categorical and continuous variable, was used to compare the incidence rates of the primary outcome of cumulative re-admissions and secondary outcomes of LVAD complications.Results
The patient cohort was predominantly male 93.5% vs 89.4% (p = 0.629) with a median age of 67.0 vs 58.0 years (p = 0.037), planned destination therapy 48.4% vs 68.4% (p = 0.242) and median LVAD follow-up time of 241 vs 379 days (p = 0.10) in the low- and high- SIPAT groups, respectively. SIPAT was not a significant predictor for cumulative re-admissions, but there was an association between higher SIPAT scores and major bleeding.Conclusion
In this single-center retrospective study, SIPAT did not predict cumulative re-admissions. Further study is required to validate SIPAT before clinical implementation. 相似文献19.
Paul D. Stein Fadi Matta Frank R. Lawrence Mary J Hughes 《The American journal of medicine》2019,132(1):88-92
Background
There are sparse data to support the recommendation for inferior vena cava (IVC) filters in patients with recurrent pulmonary embolism while on anticoagulant therapy.Methods
This was a retrospective cohort study of administrative data from the Premier Healthcare Database, 2009-2014. All-cause mortality according to the use of IVC filters was evaluated in patients who suffered a recurrent pulmonary embolism within 3 months of an index pulmonary embolism. Patients were identified by International Classification of Disease, 9th Clinical Modification codes. A time-dependent analysis controlled for immortal time bias.Results
An IVC filter was inserted in 603 of 814 (74.1%) of patients hospitalized for recurrent pulmonary embolism within 3 months of an index pulmonary embolism. Mortality with an IVC filter was 18 of 603 (3.0%) vs 83 of 211 (39.3%) (P < .0001) without a filter. Among patients with recurrent pulmonary embolism who were stable and did not receive thrombolytic therapy or undergo pulmonary embolectomy, mortality with an IVC filter was 15 of 572 (2.6%) vs 72 of 169 (42.6%) (P < .0001) without a filter.Conclusion
In the United States, usual practice was to insert an IVC filter in patients with early recurrent pulmonary embolism. Mortality was lower in those who received an IVC filter. Even stable patients with early recurrent pulmonary embolism showed a decreased mortality with IVC filters, even though in other circumstances, IVC filters do not reduce mortality in stable patients. Additional cohort studies would be useful in the absence of a randomized controlled trial. 相似文献20.
Micheli Coral Arruda Raquel Souza de Aguiar Wagner Mariano Jardim Luiz Henrique Melo Tiago Mendonça Alexandre Biasi Cavalcanti Paulo Henrique Condeixa de França 《American journal of infection control》2019,47(2):180-185