scholarly journals Validation of a Surgical Site Infection Detection Algorithm for Use in Cardiac and Orthopedic Surgery Research

2020 ◽  
Vol 41 (S1) ◽  
pp. s55-s56
Author(s):  
Hiroyuki Suzuki ◽  
Erin Balkenende ◽  
Eli Perencevich ◽  
Gosia Clore ◽  
Kelly Richardson ◽  
...  
Keyword(s):  
Cardiac Surgery ◽  
Orthopedic Surgery ◽  
False Positive ◽  
Chart Review ◽  
Improvement Program ◽  
Data Set ◽  
Sensitivity Specificity ◽  
Va Hospitals ◽  
The Impact ◽  
Manual Review

Background: Studies of interventions to decrease rates of surgical site infections (SSIs) must include thousands of patients to be statistically powered to demonstrate a significant reduction. Therefore, it is important to develop methodology to extract data available in the electronic medical record (EMR) to accurately measure SSI rates. Prior studies have created tools that optimize sensitivity to prioritize chart review for infection control purposes. However, for research studies, positive predictive value (PPV) with reasonable sensitivity is preferred to limit the impact of false-positive results on the assessment of intervention effectiveness. Using information from the prior tools, we aimed to determine whether an algorithm using data available in the Veterans Affairs (VA) EMR could accurately and efficiently identify deep incisional or organ-space SSIs found in the VA Surgical Quality Improvement Program (VASQIP) data set for cardiac and orthopedic surgery patients. Methods: We conducted a retrospective cohort study of patients who underwent cardiac surgery or total joint arthroplasty (TJA) at 11 VA hospitals between January 1, 2007, and April 30, 2017. We used EMR data that were recorded in the 30 days after surgery on inflammatory markers; microbiology; antibiotics prescribed after surgery; International Classification of Diseases (ICD) and current procedural terminology (CPT) codes for reoperation for an infection related purpose; and ICD codes for mediastinitis, prosthetic joint infection, and other SSIs. These metrics were used in an algorithm to determine whether a patient had a deep or organ-space SSI. Sensitivity, specificity, PPV and negative predictive values (NPV) were calculated for accuracy of the algorithm through comparison with 30-day SSI outcomes collected by nurse chart review in the VASQIP data set. Results: Among the 11 VA hospitals, there were 18,224 cardiac surgeries and 16,592 TJA during the study period. Of these, 20,043 were evaluated by VASQIP nurses and were included in our final cohort. Of the 8,803 cardiac surgeries included, manual review identified 44 (0.50%) mediastinitis cases. Of the 11,240 TJAs, manual review identified 71 (0.63%) deep or organ-space SSIs. Our algorithm identified 32 of the mediastinitis cases (73%) and 58 of the deep or organ-space SSI cases (82%). Sensitivity, specificity, PPV, and NPV are shown in Table 1. Of the patients that our algorithm identified as having a deep or organ-space SSI, only 21% (PPV) actually had an SSI after cardiac surgery or TJA. Conclusions: Use of the algorithm can identify most complex SSIs (73%–82%), but other data are necessary to separate false-positive from true-positive cases and to improve the efficiency of case detection to support research questions.Funding: NoneDisclosures: None

Investigating the clinical usefulness of definitions of progression with 10-2 visual field

2021 ◽  
pp. bjophthalmol-2020-318188
Author(s):  
Shotaro Asano ◽  
Hiroshi Murata ◽  
Yuri Fujino ◽  
Takehiro Yamashita ◽  
Atsuya Miki ◽  
...  
Keyword(s):  
Visual Field ◽  
False Positive ◽  
False Positive Rate ◽  
Clinical Validity ◽  
Data Set ◽  
Humphrey Field Analyzer ◽  
Positive Rate ◽  
Using Data ◽  
Sensitivity Specificity ◽  
Higher Sensitivity

Background/AimTo investigate the clinical validity of the Guided Progression Analysis definition (GPAD) and cluster-based definition (CBD) with the Humphrey Field Analyzer 10-2 test in diagnosing glaucomatous visual field (VF) progression, and to introduce a novel definition with optimised specificity by combining the ‘any-location’ and ‘cluster-based’ approaches (hybrid definition).Methods64 400 stable glaucomatous VFs were simulated from 664 pairs of 10-2 tests (10 sets × 10 VF series × 664 eyes; data set 1). Using these simulated VFs, the specificity to detect progression and the effects of changing the parameters (number of test locations or consecutive VF tests, and percentile cut-off values) were investigated. The hybrid definition was designed as the combination where the specificity was closest to 95.0%. Subsequently, another 5000 actual glaucomatous 10-2 tests from 500 eyes (10 VFs each) were collected (data set 2), and their accuracy (sensitivity, specificity and false positive rate) and the time needed to detect VF progression were evaluated.ResultsThe specificity values calculated using data set 1 with GPAD and CBD were 99.6% and 99.8%. Using data set 2, the hybrid definition had a higher sensitivity than GPAD and CBD, without detriment to the specificity or false positive rate. The hybrid definition also detected progression significantly earlier than GPAD and CBD (at 3.1 years vs 4.2 years and 4.1 years, respectively).ConclusionsGPAD and CBD had specificities of 99.6% and 99.8%, respectively. A novel hybrid definition (with a specificity of 95.5%) had higher sensitivity and enabled earlier detection of progression.

Intraoperative Nerve Monitoring in Thyroidectomies for Malignancy: Does it Matter?

2021 ◽  
pp. 000313482199196
Author(s):  
Shravan Leonard-Murali ◽  
Tommy Ivanics ◽  
Hassan Nasser ◽  
Amy Tang ◽  
Michael C. Singer
Keyword(s):  
Subgroup Analysis ◽  
Multivariable Analysis ◽  
Improvement Program ◽  
Data Set ◽  
Nerve Monitoring ◽  
Logistic Regression Models ◽  
Increased Risk ◽  
Complications Of Thyroidectomy ◽  
Intraoperative Nerve Monitoring ◽  
The Impact

Background Recurrent laryngeal nerve (RLN) injury and postoperative hypocalcemia are potential complications of thyroidectomy, particularly in malignancy. Intraoperative nerve monitoring (IONM) remains controversial. We sought to evaluate the impact of IONM on these complications using a national data set. Methods The American College of Surgeons National Surgical Quality Improvement Program thyroidectomy-targeted data set was queried for patients who underwent thyroidectomies from 2016 to 2017. Patients were grouped according to IONM use. Logistic regression models were constructed to evaluate associations of variables with 30-day hypocalcemic events (HCEs) and RLN injury. Associations were expressed as odds ratios (ORs) with 95% confidence intervals (95% CIs). A subgroup analysis was performed of patients with malignancy. Results A total of 9527 patients were identified; 5969 (62.7%) underwent thyroidectomy with IONM and 3558 (37.3%) without. By multivariable analysis, IONM had protective associations with HCE (OR = .81, 95% CI = .68-.96; P = .013) and RLN injury (OR = .83, 95% CI = .69-.98; P = .033). Malignancy increased risk of HCE (OR = 1.21, 95% CI=1.01-1.45; P = .038) and RLN injury (OR = 1.22, 95% CI = 1.02-1.46; P = .034). A large proportion (5943/9527, 62.4%) of patients had malignancy; 3646 (61.3%) underwent thyroidectomy with IONM and 2297 (38.7%) without. In the subgroup analysis, IONM had stronger protective associations with HCE (OR = .73, 95% CI = .60-.90; P = .003) and RLN injury (OR = .76, 95% CI = .62-.94; P = .012). Discussion Malignancy was associated with increased risk of HCE and RLN injury. Intraoperative nerve monitoring had a protective association with HCE and RLN injury, both overall, and in the malignant subgroup. Intraoperative nerve monitoring was correlated with improved thyroidectomy outcomes, especially if the indication was malignancy. This warrants further study to clarify cause and effect.

Evaluation of the Impact of a Quality Improvement Program and Intensivist-Directed ICU Team on Mortality After Cardiac Surgery

2013 ◽  
Vol 27 (6) ◽  
pp. 1194-1200 ◽  
Author(s):  
Alexander Kogan ◽  
Sergey Preisman ◽  
Haim Berkenstadt ◽  
Eran Segal ◽  
Yigal Kassif ◽  
...  
Keyword(s):  
Cardiac Surgery ◽  
Quality Improvement ◽  
Quality Improvement Program ◽  
Improvement Program ◽  
The Impact

Abdominal versus Perineal Approach for Treatment of Rectal Prolapse: Comparable Safety in a Propensity-matched Cohort

2013 ◽  
Vol 79 (7) ◽  
pp. 686-692 ◽  
Author(s):  
W. Conan Mustain ◽  
Daniel L. Davenport ◽  
Jeremy P. Parcells ◽  
H. David Vargas ◽  
Jon S. Hourigan
Keyword(s):  
Propensity Score ◽  
Rectal Prolapse ◽  
Operative Approach ◽  
Matched Cohort ◽  
Perineal Approach ◽  
Improvement Program ◽  
Data Set ◽  
Clinical Risk ◽  
Significant Difference ◽  
The Impact

Abdominal operations for rectal prolapse are associated with lower recurrence rates than perineal procedures but presumed higher morbidity. Therefore, perineal procedures are recommended for patients deemed unfit for abdominal repair. Consequently, bias confounds retrospective comparisons of the two approaches. To clarify the impact of operative approach on outcomes, we analyzed abdominal and perineal procedures in a propensity score-matched analysis. We selected patients undergoing surgery for rectal prolapse from the American College of Surgeons National Surgical Quality Improvement Program data set from 2005 to 2010. We grouped procedures as abdominal or perineal. We identified preoperative variables predictive of complications and regressed against operative approach. The resulting propensity score was used to select a matched cohort with similar clinical risk. We identified 2188 patients (848 abdominal [38.8%]; 1340 perineal [61.2%]). Patients undergoing the perineal approach had higher rates of most risk variables. Propensity matching resulted in 563 matched pairs (1126 patients) with similar clinical risk. In this matched cohort, no significant difference was found in the rate of any complication between the operative approaches; mortality was 0.9 per cent in each group ( P = 1.0). Relative risk for major morbidity after abdominal approach was 1.39 (95% confidence interval, 0.92 to 2.10; P = 0.15). Although many patients with rectal prolapse are high risk for abdominal surgery, our study indicates that many patients treated by perineal repair could be safely treated with a more durable operation.

scholarly journals P083: IV fluid resuscitation of sepsis patients in London, ON: a retrospective chart review

CJEM ◽  
2017 ◽  
Vol 19 (S1) ◽  
pp. S106 ◽  
Author(s):  
A. Leung ◽  
A. Aguanno ◽  
K. Van Aarsen
Keyword(s):  
Septic Shock ◽  
Hospital Mortality ◽  
Fluid Resuscitation ◽  
Chart Review ◽  
Retrospective Chart Review ◽  
Fluid Administration ◽  
Fluid Volume ◽  
Data Set ◽  
Crystalloid Fluid ◽  
The Impact

Introduction: The Surviving Sepsis Campaign (SSC) suggests that hypovolemic patients, in the setting of hypoperfusion, be administered 30 mL/kg crystalloid fluid within the first 3 hours of presentation to hospital. More recent evidence suggests that fluid resuscitation within 30 min of sepsis identification is associated with reduced mortality, hospital length of stay and ICU days. This study describes Emergency Department (ED) fluid resuscitation of patients with septic shock and/or sepsis-related in-hospital mortality, prior to implementation of a sepsis medical directive. Methods: Retrospective chart review of adult patients (18+ years), presenting to two tertiary care EDs between 01 Nov 2014 and 31 Oct 2015, with >=2 SIRS criteria and/or ED suspicion of infection and/or ED or hospital discharge sepsis diagnosis. Data were abstracted from electronic health records. Patients with septic shock, or who expired in the ED/hospital, were selected for manual chart review of clinical variables including: time, type and volume of ED IV fluid administration. Results: 13,506 patient encounters met inclusion criteria. In-hospital mortality rates were 2% (sepsis), 11.5% (severe sepsis), and 24.1% (septic shock). Of patients hypotensive at triage, fluids were administered to 33/50 (66.00%) septic shock patients, and 22/43 (51.16 %) patients who eventually expired. For all septic shock and expired patients (943), median time to IV fluid initiation was 60.50 minutes [29.75 to 101.25] for septic shock and 77.00 minutes [36.00 to 127.00] for expired patients. Median volume of fluid administered was 1.50L [1.0 to 2.00] for septic shock and 1.00L [1.00 to 2.00] for expired patients. Of septic shock and expired patients, IV fluid administration and body weight data was available for 148 encounters (15.6%). Within this group, 19 (12.8%) received no IV fluid. 90 (60.8%) received 0.1-75% of their recommended IV fluid volume. 25 (16.9%) received 75.1-125%, and 14 (9.4%) received >125.1% of their recommended fluid volume. Conclusion: In this study, severe forms of sepsis were often treated with <30 mL/kg crystalloid fluid. Fluids were administered outside of the recommended 30 min, but within the 3 h, time windows. In-hospital mortality was consistent with published data. Future research will examine a broader data set for IV fluid resuscitation in sepsis, and will measure the impact of a fluid resuscitation in sepsis medical directive.

Age at Exposure to Parental Suicide and the Subsequent Risk of Suicide in Young People

Crisis ◽  
2018 ◽  
Vol 39 (1) ◽  
pp. 27-36 ◽  
Author(s):  
Kuan-Ying Lee ◽  
Chung-Yi Li ◽  
Kun-Chia Chang ◽  
Tsung-Hsueh Lu ◽  
Ying-Yeh Chen
Keyword(s):  
Young People ◽  
Proportional Hazards ◽  
Proportional Hazards Model ◽  
Cox Proportional Hazards ◽  
Cox Proportional Hazards Model ◽  
Birth Registry ◽  
Data Set ◽  
Parental Suicide ◽  
The Impact ◽  
Age At Exposure

Abstract. Background: We investigated the age at exposure to parental suicide and the risk of subsequent suicide completion in young people. The impact of parental and offspring sex was also examined. Method: Using a cohort study design, we linked Taiwan's Birth Registry (1978–1997) with Taiwan's Death Registry (1985–2009) and identified 40,249 children who had experienced maternal suicide (n = 14,431), paternal suicide (n = 26,887), or the suicide of both parents (n = 281). Each exposed child was matched to 10 children of the same sex and birth year whose parents were still alive. This yielded a total of 398,081 children for our non-exposed cohort. A Cox proportional hazards model was used to compare the suicide risk of the exposed and non-exposed groups. Results: Compared with the non-exposed group, offspring who were exposed to parental suicide were 3.91 times (95% confidence interval [CI] = 3.10–4.92 more likely to die by suicide after adjusting for baseline characteristics. The risk of suicide seemed to be lower in older male offspring (HR = 3.94, 95% CI = 2.57–6.06), but higher in older female offspring (HR = 5.30, 95% CI = 3.05–9.22). Stratified analyses based on parental sex revealed similar patterns as the combined analysis. Limitations: As only register-­based data were used, we were not able to explore the impact of variables not contained in the data set, such as the role of mental illness. Conclusion: Our findings suggest a prominent elevation in the risk of suicide among offspring who lost their parents to suicide. The risk elevation differed according to the sex of the afflicted offspring as well as to their age at exposure.

The impact of protocolized communication during cardiac surgery

2009 ◽  
Author(s):  
S. Henrickson Parker ◽  
R. Wadhera ◽  
D. Wiegmann ◽  
T. M. Sundt
Keyword(s):  
Cardiac Surgery ◽  
The Impact

State Medical Boards' Perceptions of a Minimum Data Set and Current Practices for Collecting Physician Information

2013 ◽  
Vol 99 (4) ◽  
pp. 40-45 ◽  
Author(s):  
Aaron Young ◽  
Philip Davignon ◽  
Margaret B. Hansen ◽  
Mark A. Eggen
Keyword(s):  
Media Coverage ◽  
The United States ◽  
Minimum Data Set ◽  
Direct Patient Care ◽  
Physician Workforce ◽  
Data Set ◽  
Minimum Data ◽  
State Medical Boards ◽  
The Impact ◽  
Current Practices

ABSTRACT Recent media coverage has focused on the supply of physicians in the United States, especially with the impact of a growing physician shortage and the Affordable Care Act. State medical boards and other entities maintain data on physician licensure and discipline, as well as some biographical data describing their physician populations. However, there are gaps of workforce information in these sources. The Federation of State Medical Boards' (FSMB) Census of Licensed Physicians and the AMA Masterfile, for example, offer valuable information, but they provide a limited picture of the physician workforce. Furthermore, they are unable to shed light on some of the nuances in physician availability, such as how much time physicians spend providing direct patient care. In response to these gaps, policymakers and regulators have in recent years discussed the creation of a physician minimum data set (MDS), which would be gathered periodically and would provide key physician workforce information. While proponents of an MDS believe it would provide benefits to a variety of stakeholders, an effort has not been attempted to determine whether state medical boards think it is important to collect physician workforce data and if they currently collect workforce information from licensed physicians. To learn more, the FSMB sent surveys to the executive directors at state medical boards to determine their perceptions of collecting workforce data and current practices regarding their collection of such data. The purpose of this article is to convey results from this effort. Survey findings indicate that the vast majority of boards view physician workforce information as valuable in the determination of health care needs within their state, and that various boards are already collecting some data elements. Analysis of the data confirms the potential benefits of a physician minimum data set (MDS) and why state medical boards are in a unique position to collect MDS information from physicians.

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