scholarly journals UJI DIAGNOSTIK NT pro NATRIURETIC PEPTIDE (NTpro BNP) GAGAL JANTUNG KONGESTIF

2016 ◽  
Vol 18 (1) ◽  
pp. 48
Author(s):  
Dewi Indah Noviana Pratiwi ◽  
Suwarso Suwarso ◽  
Osman Sianipar
Keyword(s):  
Heart Failure ◽  
Congestive Heart Failure ◽  
Negative Predictive Value ◽  
Natriuretic Peptide ◽  
Predictive Value ◽  
Clinical Performance ◽  
Operating Characteristics ◽  
Likelihood Ratios ◽  
Roc Curve Analysis ◽  
Sensitivity Specificity

Congestive Heart Failure (CHF) is a syndrome associated with disturbances of heart structure and function, as a result of various cardiovascular diseases. These disturbances decrease ventricle ability to pump or fill blood in physiological pressure, which causes limitation on the ability to excercise or daily activities without dyspnea and fatigue.Early diagnosis is important to initiate prompt treatment that can prevent further disease development. To measure heart hormone in this case, NT pro Natriuretic Peptide (NT pro BNP) can be use as a more ideal examination for early detection of CHF. The aim of this study is to investigate the clinical performance of NT pro BNP and assess the cut-off point 125 pg/mL compared to clinic (Framingham criteria) and or echocardiogram in the diagnosis CHF.The diagnostic test was carried out using clinical (Framingham criteria) and or echocardiography as reference methods. The subject of this research was patients with cardiac and blood vessel disorders complaints at risk of developing congestive heart failure, who came to the Emergency Department at Dr. Sardjito Hospital Yogyakarta, supported by clinical data, radiology, other laboratory test, electrocardiography and echocardiography. The diagnosis of CHF was obtained by conducting investigation toward echocardiography examination reading in patient’s medical record. Receiver Operating Characteristics (ROC) curve analysis was conducted using SPSS 13.0 program. Sensitivity, specificity, positive and negative predictive value, accuracy and likelihood ratios were measured with 2x2 table by CAT marker program. Forty-six of fifty-seven specimens were from congestive heart failure (CHF). At 125 pg/mL as a cut-off point, regardless the interval between the onset of the symptoms and taking of blood samples, the sensitivity, specificity, positive and negative predictive value and diagnostic accuracy are 96%, 36%, 86%, 67%, 84% respectively. Likelihood ratios for positive and negative results are 1.50 and 0.12. NT pro BNP measuring is expected to give more benefit than the conventional signal, so that an early diagnosis can be achieved accurately in a timely manner.

scholarly journals Clinical Performance of the Spot Vision Photo Screener before and after Induction of Cycloplegia in Children

2019 ◽  
Vol 2019 ◽  
pp. 1-7 ◽  
Author(s):  
Konuralp Yakar
Keyword(s):  
Positive Predictive Value ◽  
Negative Predictive Value ◽  
Predictive Value ◽  
Clinical Performance ◽  
High Specificity ◽  
Screening Criteria ◽  
Predictive Values ◽  
Before And After ◽  
Sensitivity Specificity ◽  
Vision Screener

Aim. To compare the clinical performance of the Spot Vision Screener used to detect amblyopia risk factors (ARFs) in children before and after induction of cycloplegia; the children were referred because they met the screening criteria of the American Association for Pediatric Ophthalmology and Strabismus (AAPOS). Methods. The Spot Vision Screener and a standard autorefractometer were used to examine 200 eyes of 100 children aged 3–10 years, before and after cycloplegia induction, in terms of ARFs. Sensitivity, specificity, and positive and negative predictive values for the detection of significant refractive errors were measured using the AAPOS referral criteria. It was explored that Spot Screener data were affected by cycloplegia. The extent of agreement between cycloplegic/noncycloplegic photoscreening data and cycloplegic autorefraction measurements was assessed using Wilcoxon and Spearman correlation analyses. Results. The Spot’s sensitivity was improved from 60.9% to 85.3% and specificity from 94.9% to 87.4% with cycloplegia compared to cycloplegic standard autorefractometer results. The positive predictive value of Spot was 75.7%, and the negative predictive value was 90.4% without cycloplegia. With cycloplegia, the positive predictive value of Spot was 63.6% and the negative predictive value was 95.8%. Conclusions. The Spot Screener afforded moderate sensitivity and high specificity prior to cycloplegia. The sensitivity and negative predictive value improved after induction of cycloplegia. Examiners should be aware of the effects of cycloplegia on their findings.

Attended With and Head-Turning Sign can be clinical markers of cognitive impairment in older adults

2017 ◽  
Vol 29 (11) ◽  
pp. 1763-1769 ◽  
Author(s):  
Pinar Soysal ◽  
Cansu Usarel ◽  
Gul Ispirli ◽  
Ahmet Turan Isik
Keyword(s):  
Older Adults ◽  
Cognitive Impairment ◽  
Positive Predictive Value ◽  
Negative Predictive Value ◽  
Predictive Value ◽  
Cognitive Assessment ◽  
Screening Methods ◽  
Operating Characteristics ◽  
Head Turning ◽  
Sensitivity Specificity

ABSTRACTBackground:Comprehensive neurocognitive assessment may not be performed in clinical practice, as it takes too much time and requires special training. Development of easily applicable, time-saving, and cost effective screening methods has allowed identifying the individuals that require further evaluation. The aim of present study was to assess the diagnostic value of the Attended With (AW) and Head-Turning Sign (HTS) for screening cognitive impairment (CI).Methods:Comprehensive geriatric assessment was performed in 529 elderly outpatients, and the presence or absence of AW and HTS was investigated in them all.Results:Of the 529 patients, of whom the mean age was 75.67 ± 8.29 years, 126 patients were considered as CI (102 dementia, 24 mild CI). The patients with positive AW had significantly lower scores on Mini-Mental State Examination, Cognitive State Test, and Montreal Cognitive Assessment, and activities of daily living compared to AW (−) patients (p < 0.001). Similar significant findings were obtained in the patients with positive and negative HTS (p < 0.001). The sensitivity, specificity, positive predictive value, and negative predictive value of AW in detecting CI were 92%, 37%, 31.4%, and 93.7%, respectively. The sensitivity, specificity, positive predictive value, and negative predictive value of HTS were 80%, 64%, 41.8%, and 91.5%, respectively. The area under the receiver-operating characteristics curve was 0.90 for AW and 0.82 for HTS.Conclusion:AW and HTS are fast, simple, effective, and sensitive methods for detecting CI. Therefore, they can be used for older adults attending the primary care settings with memory loss. Those with positive AW or HTS can be referred to the relevant centers for detailed cognitive assessment.

scholarly journals Validation of a Decision Rule and Derivation of a Modified Rule to Obtain Chest Radiograph in Patients with Nontraumatic Chest Pain in the Emergency Department

2014 ◽  
Vol 2014 ◽  
pp. 1-5 ◽  
Author(s):  
Case Newsom ◽  
Rebecca Jeanmonod ◽  
Karl Weller ◽  
Nabil Boutros ◽  
Mark Reiter ◽  
...  
Keyword(s):  
Heart Failure ◽  
Emergency Department ◽  
Congestive Heart Failure ◽  
Chest Pain ◽  
Alcohol Abuse ◽  
Decision Rule ◽  
Predictive Value ◽  
Breath Sounds ◽  
History Of ◽  
Sensitivity Specificity

Objectives. We sought to validate and refine a decision rule for chest X-ray (CXR) utilization in nontraumatic chest pain (CP) patients presenting to the emergency department (ED). Methods. Retrospective review of ED patients presenting with CP who had CXR performed during three nonconsecutive months was performed. The presence of 18 variables derived from history and exam was ascertained. Sensitivity, specificity, positive predictive value (PPV), and negative predictive value (NPV) of the original rule were calculated. Refinement using additional variables was performed. Results. 967 patient charts were reviewed. 89.9% of CXR were normal, 5.2% had insignificant findings, and 5.1% had significant findings. Application of the criteria had a sensitivity/specificity of 74%/59% and a PPV/ NPV of 9%/98%. Rule modification to obtain CXR for age ≥ 65 years, history of congestive heart failure and alcohol abuse, and exam findings of decreased breath sounds, fever, and tachypnea maintained sensitivity while improving specificity to 69%. Conclusions. Most CP patients have normal CXRs. Narrowing a decision rule to obtain CXR in patients with age ≥ 65 years, history of congestive heart failure and alcohol abuse, and exam findings of decreased breath sounds, fever, and tachypnea maintain sensitivity while improving specificity and NPV.

2 × 2 Contingency table

2017 ◽  
Author(s):  
Mark Harrison
Keyword(s):  
Emergency Medicine ◽  
Positive Predictive Value ◽  
Negative Predictive Value ◽  
Predictive Value ◽  
Contingency Table ◽  
Likelihood Ratios ◽  
Negative Results ◽  
Sensitivity Specificity

This chapter describes the 2 × 2 contingency table as it applies to Emergency Medicine, and in particular the Primary FRCEM examination. The chapter outlines the key details of sensitivity, specificity, positive predictive value, negative predictive value, likelihood ratios for positive and negative results, and the 2 × 2 contingency table. This chapter is laid out exactly following the RCEM syllabus, to allow easy reference and consolidation of learning.

Gastric cancer detection using the serum pepsinogen test method

2021 ◽  
pp. 030089162110149
Author(s):  
Dragan Trivanovic ◽  
Stjepko Plestina ◽  
Lorena Honovic ◽  
Renata Dobrila-Dintinjana ◽  
Jelena Vlasic Tanaskovic ◽  
...  
Keyword(s):  
Gastric Cancer ◽  
Early Detection ◽  
Predictive Value ◽  
Area Under The Curve ◽  
Test Method ◽  
Operating Characteristics ◽  
Roc Curve Analysis ◽  
Laboratory Assessment ◽  
Pepsinogen I ◽  
Sensitivity Specificity

Background: Gastric cancer (GC) is the eighth most common cause of cancer deaths in Croatia and one of the most common causes of cancer deaths worldwide. A reliable diagnostic tool for the early detection of GC is essential. Objective: We previously suggested a pepsinogen test method to reduce the mortality from GC by allowing early detection. Here, we report an updated analysis from a prospective single-center clinical study to evaluate the sensitivity and specificity of the pepsinogen test method and to determine whether this test can be used as a part of routine laboratory assessment of high-risk patients. Methods: We present mature data of the pepsinogen test method in the Croatian population after a median follow-up of 36 months. Statistical analyses were performed using a Mann-Whitney U test, multiple logistic regression, and receiver operating characteristics (ROC) to evaluate the predictive power of the assayed biomarkers. Results: Of the 116 patients, 25 patients had GC and 91 demonstrated a nonmalignant pathology based on tissue biopsy. Cutoff values were pepsinogen I ⩽70 and pepsinogen I/II ratio ⩽3.0. Using ROC curve analysis, the accuracy, sensitivity, specificity, positive predictive value, and negative predictive value were determined to be 87.22%, 78.12%, 90.10%, 71.43%, and 92.86%, respectively, for the diagnosis of GC. The area under the curve was 0.700 (95% confidence interval 0.57–0.83). Conclusion: Pepsinogen tests are valuable for screening a population in need of further diagnosis and could help to avoid unnecessary invasive endoscopic procedures.

scholarly journals How successful is color flow mapping and pulsed Doppler studies in predicting histologically confirmed benign and malignant adnexal masses in perimenopausal women

2017 ◽  
Vol 6 (12) ◽  
pp. 5440
Author(s):  
Souptik Gangopadhyay ◽  
Partha Sarathi Chakraborty ◽  
Archana Singh
Keyword(s):  
Positive Predictive Value ◽  
Negative Predictive Value ◽  
Predictive Value ◽  
Diagnostic Challenge ◽  
Roc Curve Analysis ◽  
Color Flow ◽  
Adnexal Masses ◽  
Perimenopausal Women ◽  
Sensitivity Specificity ◽  
Cystic Masses

Background: Adnexal masses in perimenopausal women presents a specific diagnostic challenge because benign masses outnumbers malignant masses. Majority of adnexal masses are benign but 25% are malignant. The objective of this study was to see the effectiveness of transvaginal colour Doppler in predicting malignancy in adnexal masses in perimenopausal women.Methods: Clinically detected adnexal masses were subjected to transabdominal ultrasound scan (for basic characterization of mass into solid, cystic, mixed) then transvaginal scan and neovascularization, resistivity index (RI) was measured. Subsequently all patients underwent laparotomy. Histopathological reports obtained, and correlation done between USG and histopathology.Results: Among cystic masses neovascularization was present in 4 cases, among them benign and malignant masses were equal in number. Among mixed masses neovascularization was present in 17 cases 9 were malignant 8 benign, among solid masses all cases where neovascularization was detected were malignant. Neovascularization was absent in 12 cystic masses and 11 mixed masses, and all were benign. Kappa value calculated for tumour status and neovascularization is 0.610 which is substantially agreement with neovascularization as predictor of malignancy. Sensitivity, specificity, positive predictive value and negative predictive value of neovascularization for cystic masses are 100, 85, 50, 100(%) respectively. Sensitivity, specificity, positive predictive value and negative predictive value of neovascularization for mixed masses are 100, 57.89, 52.94, 100(%) respectively. Sensitivity and positive predictive value of neovascularization for solid masses is 100(%). Sensitivity specificity positive predictive value and negative predictive value of RI for cystic masses: 100, 92.8, 66.6, 100 (%) respectively. Sensitivity specificity positive predictive value and negative predictive value of RI for mixed masses: 77.7, 89.4, 77.7, 89.4(%). Sensitivity positive predictive value of RI for solid masses 100%.ROC curve analysis shows cut off value for differentiating between benign and malignant masses is 0.4. Less than 0.4 has more chance of malignancy.Conclusions: Transvaginal Doppler ultrasound must be done preoperatively for adnexal mass characterization.

scholarly journals Clinical Diagnosis has a High Negative Predictive Value in Evaluation of Malignant Skin Lesions

2021 ◽  
Vol 2021 ◽  
pp. 1-5
Author(s):  
Maral Seyed Ahadi ◽  
Alireza Firooz ◽  
Hoda Rahimi ◽  
Mehrdad Jafari ◽  
Zohreh Tehranchinia
Keyword(s):  
Negative Predictive Value ◽  
Clinical Diagnosis ◽  
Predictive Value ◽  
Skin Lesions ◽  
University Hospital ◽  
Response To Treatment ◽  
Likelihood Ratios ◽  
Malignant Skin ◽  
High Negative Predictive Value ◽  
Sensitivity Specificity

Background. The increasing incidence of skin cancers in fair-skinned population and its relatively good response to treatment make its accurate diagnosis of great importance. We evaluated the accuracy of clinical diagnosis of malignant skin lesions by comparing the clinical diagnosis with histological diagnosis as the gold standard. Materials and Methods. In this retrospective study, we assessed all the pathology reports from specimens sent to a university hospital laboratory in 3 consecutive years from March 2008 to March 2010. Sensitivity, specificity, positive predictive value (PPV), negative predictive value (NPV), and positive and negative likelihood ratios were calculated for clinical diagnosis of malignant skin lesions stratified by their histological subtype. Results. A total 4,123 specimen were evaluated. The sensitivity and specificity for clinical diagnosis of malignancy were 90.48% and 82.85%, respectively, whereas the negative predictive value was shown to be 99.06%. The positive and negative likelihood ratios were 5.23 and 0.11, respectively. Conclusion. Pathological assessment of skin lesions remains the cornerstone of skin cancer diagnosis. The high NPV and the relatively low PPV indicate that clinical diagnosis is more efficient in ruling out malignancies rather than diagnosing them.

scholarly journals Endtidal carbonmonoxide and carboxyhemoglobin for prediction of significant hyperbilirubinemia in healthy Indian neonates >35 weeks of gestation

2020 ◽  
Vol 7 (6) ◽  
pp. 1225
Author(s):  
Gokul Krishnan R. ◽  
Mangalabharathi S. ◽  
Mohammed Sajjid ◽  
Ramya S.
Keyword(s):  
Positive Predictive Value ◽  
Negative Predictive Value ◽  
Likelihood Ratio ◽  
Predictive Value ◽  
Neonatal Period ◽  
Positive Likelihood Ratio ◽  
Negative Likelihood Ratio ◽  
Likelihood Ratios ◽  
Early Neonatal Period ◽  
Sensitivity Specificity

Background: Endtidalcarbonmonoxide (ETCOc) and Carboxyhemoglobin (COHB) levels correlate well to bilirubin production and an availability of non-invasive point of care (POC) device in predicting significant hyperbilirubinemia is of great advantage when compared to measurement of serum bilirubin. Objective of the study is to measure a value of ETCOc and COHB in the early neonatal period for the prediction of significant hyperbilirubinemia.Methods: This was the descriptive Cross Sectional Study. ETCOc and COHB were measured 12th hourly for 72 hours followed by TSB in whom the TCB was >14mg/dl. Neonates were classified as jaundiced whose TSB values were in phototherapy range as per AAP Recommendations. Receiver Operative Curves (ROC) were created by appropriate statistical software for ETCOc and COHb to predict significant hyperbilirubinemia. The Sensitivity, Specificity, Positive predictive value, Negative predictive value and likelihood ratios of each was determined and the correlation between ETCOc and COHb levels, ETCOc and TCB, COHB and TCB at different hours of age was evaluated.Results: Among the total 320 infants, 156 of them developed significant hyperbilirubinemia. The ETCOc and COHB level at 60 hours of age was the most predictive of significant hyperbilirubinemia by ROC analysis. ETCOc cut-off of 1.65 ppm at 60 hours of age has a sensitivity, specificity, positive predictive value, negative predictive value, positive likelihood ratio and negative likelihood ratio of 84.6%, 80.5%, 80.5% and 84.6%, 4.33 and 0.19. COHB cut-off of 1.32 ppm at 60 hours of age has a sensitivity, specificity, positive predictive value, negative predictive value, positive likelihood ratio and negative likelihood ratio of 84.6%, 81%, 80% and 84.2%, 4.34 and 0.19.ETCOc had a maximum correlation with COHB at 48 hours of age.Conclusions: An increased level of Endtidalcarbonmonoxide and Carboxyhemoglobin in the early neonatal period is useful as a screening test for prediction of significant hyperbilirubinemia.

scholarly journals BCL-xL is Correlated With Disease Severity in Neonatal Infants With Sepsis

2021 ◽  
Author(s):  
Wenshen Wu ◽  
Qi Peng ◽  
Tianli Huang ◽  
Jinfen Liao ◽  
Ning Li
Keyword(s):  
Septic Shock ◽  
Positive Predictive Value ◽  
Negative Predictive Value ◽  
Disease Severity ◽  
Predictive Value ◽  
B Cell Lymphoma ◽  
Diagnostic Value ◽  
Operating Characteristics ◽  
Tnf Α ◽  
Sensitivity Specificity

Abstract Objective: to investigate the association between disease severity in patients with sepsis and TNF-a, B cell lymphoma-extra-large (BCL-xL), and serum Mitochondrial membrane potential (MMP). Methods: we investigated the correlation between SNAP-II score and levels of TNF-α, BCL-xL, and MMP-index, respectively. The receiver-operating characteristics (ROC) was to assess the diagnostic value of the the Bcl - xL in the diagnosis of the of septic shock. Results: A total of 37 children were diagnosed with sepsis. SNAP-II was positively correlated with the level of BCL-xL (r=0.450, P =0.006). The area under the BCL-xL curve was 83.0%, and the 95% CI was 67.1–93.3%. The septic shock threshold was >3.022 ng/mL, and the sensitivity and specificity were 75.0% and 95.2%, respectively. The positive predictive value was 92.3%, and the negative predictive value was 83.3%. Furthermore, the level of SNAP-II was >10, and BCL-xL was >3.022 ng/mL as the threshold, and the sensitivity, specificity, positive predictive value, and negative predictive value of septic shock were 93.8%, 95.2%, 93.8%, and 95.2%, respectively. Conclusion: A correlation has been established between SNAP II and neonatal prognosis. The combination of BCL-xL and SNAP-II was more sensitive and specific than the BCL-xL to predict neonatal sepsis outcomes.

scholarly journals Natriuretic peptide referral thresholds and heart failure diagnosis: population-based cohort study

2021 ◽  
Vol 42 (Supplement_1) ◽  
Author(s):  
C Taylor ◽  
J.M Ordonez-Mena ◽  
S Lay-Flurrie ◽  
C Goyder ◽  
N Jones ◽  
...  
Keyword(s):  
Heart Failure ◽  
Cohort Study ◽  
Negative Predictive Value ◽  
Natriuretic Peptide ◽  
Predictive Value ◽  
National Level ◽  
Population Based ◽  
Practice Research ◽  
Clinical Practice Research Datalink ◽  
Nice Guideline

Abstract Background Natriuretic peptide (NP) testing is recommended by both the European Society of Cardiology (ESC) and the National Institute for Health and Care Excellence (NICE) for people presenting with symptoms of heart failure (HF) in primary care. However, ESC and NICE guidelines suggest different NP referral thresholds: ESC recommend referral at a lower NP level (BNP≥35pg/ml / NT-proBNP≥125pg/ml) compared to NICE (BNP≥100pg/ml/NT-proBNP≥400pg/ml). Purpose We aimed to evaluate NP test performance for HF diagnosis for ESC and NICE guideline-defined thresholds. Methods Population-based cohort study using linked primary and secondary care data from the Clinical Practice Research Datalink in England between 1st January 2000 and 31st December 2018. Participants were adults aged 45 years and above with a NP result: 74,233 had a BNP and 155,347 had a NT-proBNP measurement. The main outcome measures were diagnostic performance of NP test (sensitivity, specificity, positive predictive value, negative predictive value) by threshold. Results A total of 229,580 patients had a NP test and 21,102 (9.2%) were diagnosed with HF. The ESC NT-proBNP threshold of 125pg/ml had a sensitivity of 94.6% (94.2 to 95.0) and specificity of 50.0% (49.7 to 50.3) compared to sensitivity of 81.7% (81.0 to 82.3) and specificity of 80.3% (80.0 to 80.5) for the NICE NT-proBNP 400pg/ml threshold. For both guidelines, nearly all patients with a NP level below the threshold did not have HF (negative predictive value ESC 98.9% (98.8 to 99.0) and NICE 97.7% (97.6 to 97.8). Similar performance was found for BNP. Conclusions The performance of NP testing is dependent on the guideline-specified threshold for referral. In 100 people with HF, using the NICE threshold would falsely reassure 18 patients, whereas the lower ESC threshold would miss just 5 people but twice as many patients would be referred for diagnostic assessment. The optimal NP threshold for referral for HF diagnosis will depend on the healthcare setting. The trade-off between missing HF cases and overwhelming diagnostic services needs to be determined at a national level. FUNDunding Acknowledgement Type of funding sources: Public grant(s) – National budget only. Main funding source(s): National Institute for Health Research

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