Accurate and quick predictor of necrotizing soft tissue infection: Usefulness of the LRINEC score and NSTI assessment score

ObjectiveThe Laboratory Risk Indicator for Necrotizing Fasciitis (LRINEC) score is a diagnostic tool for necrotizing soft tissue infection (NSTI), which is validated and is considered to have high diagnostic value. However, some experts criticize LRINEC score for consisting of laboratory test results only.MethodsIn this single-center retrospective study, we created a new scoring system (NSTI assessment score; NAS), which also incorporated vital signs as another diagnostic tool for NSTI using cases from our hospital and also evaluated diagnostic accuracy of LRINEC score. We identified NSTI predictors by comparing 24 NSTI patients and 80 non NSTI patients using uni- and multivariate logistic regression analysis, and created NAS based on odds ratio of variables which are statistically significant in the multivariate model.ResultsWe identified mean arterial pressure, C-reactive protein, hemoglobin, serum creatinine, and glucose as a predictor for NSTI. The maximum value of NAS was 11 points with the cut-off value of 6. Sensitivity, specificity, positive predictive value, and negative predictive value of the NAS for diagnosis of NSTI were 87.5%, 91.3%, 75.0%, and 96.1%, respectively. Area under the receiver operating characteristic curve was 0.926 (0.851–1.00) for the NAS and 0.903 (0.833–0.973) for the LRINEC score, and they were not statistically different (p = 0.167).ConclusionThe NAS has high diagnostic accuracy in predicting NSTI, and is comparable with the LRINEC score. The NAS needs to be validated in other cohorts in the future.     

Necrotizing soft tissue infections: a primary care review

Patients with necrotizing soft tissue infections often present initially to family physicians. These infections must be detected and treated rapidly to prevent loss of limb or a fatal outcome. Unfortunately, necrotizing soft tissue infections have no pathognomonic signs. Patients may present with some evidence of cellulitis, vesicles, bullae, edema, crepitus, erythema, and fever. They also may complain of pain that seems out of proportion to the physical findings; as the infection progresses, their pain may decrease. Magnetic resonance imaging and laboratory findings such as acidosis, anemia, electrolyte abnormalities, coagulopathy, and an elevated white blood cell count may provide clues to the diagnosis. No single organism or combination of organisms is consistently responsible for necrotizing soft tissue infections. Most infections are polymicrobial, with both anaerobic and aerobic bacteria frequently present. Fungal infections also have been reported. Generally, bacterial and toxin-related effects converge to cause skin necrosis, shock, and multisystem organ failure. Aggressive debridement of infected tissues is critical to management. Antimicrobial therapy is important but remains secondary to the removal of diseased and necrotic tissues.     

Necrotizing soft tissue infections: a guide to early diagnosis and initial therapy

Necrotizing skin and soft tissue infections are caused by many different bacteria, are frequently polymicrobial, and may have a deceptively innocent early clinical presentation. Clostridial and nonclostridial necrotizing infections are frequently similar in their early presentation. The initial presentation of these infections can be insidious, which results in delay in diagnosis and the start of therapy. The clinician must use sound medical principles of clinical history and meticulous examination in each patient, combined with constant suspicion, to establish a timely diagnosis. This group of infectious diseases is associated with frequent morbidity and significant mortality rates, which increase with any delay in the diagnosis and the initiation of medical and surgical therapy. Also associated with these necrotizing infections is an excessive index of litigation. This review is intended as a guide for the clinician in making an early diagnosis of any necrotizing skin and soft tissue infection and initiating effective medical and surgical therapy.     

A five year review of anaerobic, necrotizing soft tissue infections: a nursing perspective.

Anaerobic necrotizing soft tissue infections are known for their devastating effects of tissue destruction and death. These infections may occur as a result of trauma, surgical intervention or occur spontaneously in predisposed individuals. They are caused by a wide range of anaerobic organisms and may be categorised according to the tissue involvement as Necrotizing Fasciitis and Myonecrosis. A five year review of patients admitted for hyperbaric oxygen (HBO) therapy and requiring intensive care revealed a patient group numbering 25, roughly equally divided between the two classifications of tissue involvement. Trauma was an aetiological factor in 5 of these cases. Cancer and diabetes mellitus were also prominent aetiological factors. Treatment consisted of the triad of early selective/aggressive surgery, high dose antibiotic therapy and HBO therapy. The mortality of the group was 25%. Delay in treatment was associated with increased mortality. Nursing care, for this particular patient group is demanding, requiring particular attention to wound care, analgesia, transport, psychosocial care of patient with mutilating wounds, nutrition and temperature homeostasis. It is a cause for concern that two cases occurred after elective orthopaedic procedures requiring the application of plaster of paris (POP) cast over a leg.     

Community-acquired necrotizing soft tissue infections: a review of 122 cases presenting to a single emergency department over 12 years

PURPOSE: To characterize the Emergency Department (ED) presentation of necrotizing soft tissue infections (NSTI) and identify severity markers. Procedures: Retrospective chart review of pathologically diagnosed NSTIs presenting to an urban ED from 1990-2001. Cases were identified from a surgical database, ICD-9 search and prospectively. Five Emergency Physicians (EPs) abstracted data using a standardized form. Severe NSTI was defined by any of the following: death, amputation, intensive care unit (ICU) stay >24 h, >300 cm(2) debrided. Severe and non-severe cases were compared using chi-square, Fisher's exact, and multivariate logistic regression testing. FINDINGS: The 122 cases were characterized by: injection drug use, 80%; fever, 44%; systolic blood pressure (BP) <100 mm Hg, 21%; white blood cell count (WBC) >20 x 10(9)/L, 43%; median time to operation, 8.4 h; mortality, 16%. The managing EP suspected NSTI in 59%. A systolic BP <100 mm Hg, BUN >18 mg/dL, radiographic soft tissue gas, admission to a non-surgical service and clostridial species were independently associated with severe NSTI. CONCLUSIONS: Pathologically defined NSTIs have a wide spectrum of ED presentations and early diagnosis remains difficult.     

Rapidly advancing necrotizing fasciitis caused by Photobacterium (Vibrio) damsela: a hyperaggressive variant

OBJECTIVE: To describe the first case of Vibrio damsela necrotizing fasciitis in New England, emphasizing the importance of very early operative intervention to achieve source control in this extremely aggressive infection. DESIGN: Case report. SETTING: Surgical intensive care unit at Tufts-New England Medical Center in Boston, MA. PATIENT: A 69-yr-old retired fisherman with rapidly progressive necrotizing fasciitis from Photobacterium (Vibrio) damsela infection and ensuing multiple-system organ failure. INTERVENTIONS: Surgical debridement, ventilator support, vasopressors, continuous veno-venous hemofiltration, and blood product transfusions. MEASUREMENTS AND MAIN RESULTS: Death. CONCLUSIONS: A high index of suspicion is necessary for the diagnosis of this specific pathogen and concordant infection. The willingness to surgically debride and amputate without hesitation at a very early point may be the only intervention capable of saving the lives of patients affected by Photobacterium (Vibrio) damsela.     

The Nurses' Global Assessment of Suicide Risk (NGASR): developing a tool for clinical practice

Contemporary and established literature indicates that people with mental health problems are at a higher risk of suicide than the general population. Because suicide is a multifaceted, complex phenomenon, risk assessment within the mental health care system requires a pluralistic, multidimensional and multiprofessional response. While assessment tools may provide useful guidance, especially guarding against complacency and over confidence, the fundamental basis of risk assessment must involve a thorough examination of the personal, interpersonal and social circumstances of each individual. Such thorough and rigorous assessments, the authors of this paper would add, require a degree of 'clinical judgement'. As a rule, inexperienced members of mental health care staff should not be charged with the responsibility of conducting suicide risk assessments without sound mentorship. However, with the right support and assessment tool, the novice practitioner might develop the kind of clinical judgement necessary for this critical task. Accordingly, this paper traces the development of the Nurses' Global Assessment of Suicide Risk (NGASR). It illustrates the practice development context out of which the need for the tool arose; it outlines the key evidence that underpins the construction of the tool and it is described. It is important to point out that as yet, no wide scale, quantitative validation of the tool has been conducted. Therefore, at this point, the tool should be treated with a degree of appropriate caution. Nevertheless, the preliminary attempts that have been made to 'validate' or 'rate' the tool in practice are included. While acknowledging that any risk assessment tool represents only one aspect of the necessarily broader assessment of risk, the NGASR appears to provide a useful template for the nursing assessment of suicide risk, especially for the novice.     

The combined score of quick SOFA and the charlson comorbidity index could be a poor prognostic indicator for in-hospital mortality among patients with necrotizing fasciitis

IntroductionWhile necrotizing fasciitis (NF) is a rare but rapidly progressive devastating soft tissue infectious disease showing a high in-hospital mortality rate of 20–30%, there are no evidence-based predictive tools.Patients and methodsFor the purpose of examining which predictive tools could correctly reflect the severity and prognosis of NF, we retrospectively reviewed all patients who were diagnosed with NF at our institute. The disease severity was evaluated by quick SOFA (qSOFA), SOFA score, SIRS score, APACHE II score, LRINEC score and the combined score of qSOFA and CCI.ResultsA total of 27 patients were enrolled in this study. The median age was 68 years (range 39–96 years). With respect to the predictive values for in-hospital mortality among NF patients, the area under the ROC curve for qSOFA, SOFA score, APACHE II score, the combined score of qSOFA and CCI were 0.653 (p = 0.192), 0.588 (p = 0.12), 0.709 (p = 0.075) and 0.782 (p = 0.016) respectively.A univariate analysis showed that the combined score of qSOFA and CCI≥5 and the initial treatment failure were poor prognostic indicators for the in-hospital death among NF patients. The appropriate cut-offs of qSOFA and CCI were based on the Youden Index.ConclusionWe concluded that the combined score of qSOFA and CCI could reflect the severity and prognosis of NF for in-hospital death.     

The Finnish Diabetes Risk Score (FINDRISC) as a screening tool for hepatic steatosis

INTRODUCTION. Hepatic steatosis due to non-alcoholic fatty liver disease is associated with obesity, dyslipidemia, insulin resistance, and type 2 diabetes. The Finnish Diabetes Risk Score (FINDRISC) is a prognostic screening tool to detect people at risk for type 2 diabetes without the use of any blood test. The objective of this study was to evaluate whether FINDRISC can also be used to screen for the presence of hepatic steatosis. PATIENTS AND METHODS. Steatosis was determined by ultrasound. The study sample consisted of 821 non-diabetic subjects without previous hepatic disease; 81% were men (mean age 45 ± 9 years) and 19% women (mean age 41 ± 10 years). RESULTS. Steatosis was present in 44% of men and 10% of women. The odds ratio for one unit increase in the FINDRISC associated with the risk of steatosis was 1.30 (95% CI 1.25-1.35), similar for men and women. The area under the receiver operating characteristics curve for steatosis was 0.80 (95% CI 0.77-0.83); 0.80 in men (95% CI 0.77-0.83) and 0.83 (95% CI 0.73-0.93) in women. CONCLUSIONS. Our data suggest that the FINDRISC could be a useful primary screening tool for the presence of steatosis.     

The Finnish Diabetes Risk Score (FINDRISC) as a screening tool for hepatic steatosis

Abstract

Introduction. Hepatic steatosis due to non-alcoholic fatty liver disease is associated with obesity, dyslipidemia, insulin resistance, and type 2 diabetes. The Finnish Diabetes Risk Score (FINDRISC) is a prognostic screening tool to detect people at risk for type 2 diabetes without the use of any blood test. The objective of this study was to evaluate whether FINDRISC can also be used to screen for the presence of hepatic steatosis.

Patients and methods. Steatosis was determined by ultrasound. The study sample consisted of 821 non-diabetic subjects without previous hepatic disease; 81% were men (mean age 45 ± 9 years) and 19% women (mean age 41 ± 10 years).

Results. Steatosis was present in 44% of men and 10% of women. The odds ratio for one unit increase in the FINDRISC associated with the risk of steatosis was 1.30 (95% CI 1.25–1.35), similar for men and women. The area under the receiver operating characteristics curve for steatosis was 0.80 (95% CI 0.77–0.83); 0.80 in men (95% CI 0.77–0.83) and 0.83 (95% CI 0.73–0.93) in women.

Conclusions. Our data suggest that the FINDRISC could be a useful primary screening tool for the presence of steatosis.     

Randomized comparison of linezolid (PNU-100766) versus oxacillin-dicloxacillin for treatment of complicated skin and soft tissue infections

This randomized, double-blind, multicenter trial compared the efficacy and safety of linezolid, an oxazolidinone, with those of oxacillin-dicloxacillin in patients with complicated skin and soft tissue infections. A total of 826 hospitalized adult patients were randomized to receive linezolid (600 mg intravenously [i.v.]) every 12 h or oxacillin (2 g i.v.) every 6 h; following sufficient clinical improvement, patients were switched to the respective oral agents (linezolid [600 mg orally] every 12 h or dicloxacillin [500 mg orally] every 6 hours). Primary efficacy variables were clinical cure rates in both the intent-to-treat (ITT) population and clinically evaluable (CE) patients and microbiological success rate in microbiologically evaluable (ME) patients. Safety and tolerability were evaluated in the ITT population. Demographics and baseline characteristics were similar across treatment groups in the 819 ITT patients. In the ITT population, the clinical cure rates were 69.8 and 64.9% in the linezolid and oxacillin-dicloxacillin groups, respectively (P = 0.141; 95% confidence interval -1.58 to 11. 25). In 298 CE linezolid-treated patients, the clinical cure rate was 88.6%, compared with a cure rate of 85.8% in 302 CE patients who received oxacillin-dicloxacillin. In 143 ME linezolid-treated patients, the microbiological success rate was 88.1%, compared with a success rate of 86.1% in 151 ME patients who received oxacillin-dicloxacillin. Both agents were well tolerated; most adverse events were of mild-to-moderate intensity. No serious drug-related adverse events were reported in the linezolid group. These data support the use of linezolid for the treatment of adults with complicated skin and soft tissue infections.     

The role perception questionnaire (RPQ): a tool for assessing undergraduate students' perceptions of the role of other professions

A systematic review of interprofessional education (Freeth et al., 2002) revealed that there were many weaknesses in the current body of knowledge of interprofessional education outcomes. One reason for this was the lack of good quality study designs for evaluating the outcomes of interprofessional education. This paper discusses the range of tools that were found in the literature and describes the production and validation of two questionnaires that can be used as part of an interprofessional evaluation strategy. Firstly, a Generic Role Perception Questionnaire which can be used for measuring the perception of the role of a range of professions and a Nursing Role Perception Questionnaire used specifically for measuring the perception of the role of a nurse. Repertory grid technique was selected to elicit constructs from a multiprofessional group of final year undergraduate students. This pool was then used to develop the two questionnaires. Factor analysis, internal consistency and test re-test measures are used along with evidence of validity. The questionnaires were found to have acceptable validity and reliability and could be used as part of an IPE evaluation strategy to measure changes in professional role perception in an undergraduate population.     

Geographic variations in garenoxacin (BMS284756) activity tested against pathogens associated with skin and soft tissue infections: report from the SENTRY Antimicrobial Surveillance Program (2000)

The antimicrobial activity of garenoxacin, a des-(6)F quinolone (formally BMS284756 and T-3811), was evaluated against 2,537 skin and soft tissue infection (SSTI) isolates from the SENTRY Antimicrobial Surveillance Program. Strains isolated in 2000 from Europe, North and Latin America were tested at a central laboratory using reference broth microdilution methods. The rank order of the seven most frequent SSTI pathogens was: Staphylococcus aureus (39.9%), Pseudomonas aeruginosa (12.1%), Escherichia coli (9.7%), Enterococcus spp. (7.7%), Klebsiella spp. (5.8%), Enterobacter spp. (5.6%) and coagulase-negative staphylococci (CoNS; 4.2%). Garenoxacin exhibited a four-fold greater activity (MIC(90), 0.06 microg/ml) compared to levofloxacin (MIC(90), 0.25 microg/ml) against oxacillin-susceptible S. aureus; and oxacillin-resistant staphylococci were more susceptible to garenoxacin (>/=90.5%) at Europe > North America). Continued development of garenoxacin as a treatment of pathogens that commonly cause SSTIs appears to be warranted.     

The effects of instrument-assisted soft tissue mobilization compared to other interventions on pain and function: a systematic review

Background: Instrument-assisted soft tissue mobilization (IASTM) is an emerging intervention in physical therapy. With the increasing prevalence of pain and disability associated with musculoskeletal impairments, it is essential to identify the most effective treatment strategies.

Objective: To systematically examine evidence on the effectiveness of IASTM, compared to other interventions on patients with pain and disability resulting from musculoskeletal impairments.

Methods: Numerous databases were searched using the terms Instrument Assisted Soft Tissue, Pain, Function, Graston, and soft tissue mobilization (STM). Inclusion criteria included: randomized clinical trials on patients with musculoskeletal impairments, STM had to be a treatment intervention, performed on human subjects, and had to capture a measure of pain or function. Articles were excluded if they were not published in English or if the subjects were of the pediatric or geriatric populations. Included articles were appraised using the Physiotherapy Evidence Database (PEDro) scale.

Results: Seven studies met the inclusion criteria. All seven articles scored a minimum 4/10 on the PEDro scale. The studies involved treatment of numerous anatomical locations and the majority of the studies demonstrated significant improvements in pain and/or range of motion when compared to control or other conservative treatment groups.

Conclusions: These outcomes support the idea that IASTM may have an impact on physiological changes by providing an increase in blood flow, reduction in tissue viscosity, myofascial release, interruption of pain receptors, and improvement of flexibility of underlying tissue. It is suggested that IASTM is an effective treatment intervention for reducing pain and improving function in less than a three-month period.