Negative predictive value of drug provocation tests in children

2014 ◽  
Vol 25 (7) ◽  
pp. 685-690 ◽  
Author(s):  
Emine D. Misirlioglu ◽  
Muge Toyran ◽  
Murat Capanoglu ◽  
Aysenur Kaya ◽  
Ersoy Civelek ◽  
...  
Keyword(s):  
Negative Predictive Value ◽  
Predictive Value ◽  
Provocation Tests ◽  
Drug Provocation Tests

scholarly journals Macrolide Allergy in Children and the Negative Predictive Value of Drug Provocation Tests in Mild Index Reactions

2021 ◽  
Vol 19 (2) ◽  
pp. 92-99
Author(s):  
Betül Karaatmaca ◽  
Şule büyük yaytokgil ◽  
İlknur Külhaş Çelik ◽  
Özge Yılmaz Topal ◽  
Ersoy Civelek ◽  
...  
Keyword(s):  
Negative Predictive Value ◽  
Predictive Value ◽  
Drug Hypersensitivity ◽  
Provocation Test ◽  
Skin Tests ◽  
Provocation Tests ◽  
Patient Reported ◽  
Drug Provocation Test ◽  
Work Up ◽  
Drug Provocation Tests

ABSTRACT Objective: Macrolide allergy is rarely reported, and there is limited knowledge of hypersensitivity reactions (HRs) in children. The negative predictive value (NPV) of drug provocation tests (DPTs) for macrolides is unresolved. We aim to evaluate the clinical features of macrolide allergy in children, and determine the NPV of macrolide DPTs. Materials and Methods: Pediatric patients who were referred to our allergy department with a suspicion of macrolide allergy were evaluated by DPTs with or without prior skin tests between 2011 and 2020. Characteristics of the HRs and patients, the results of skin and DPTs were recorded. At least three months after evaluation of the patients with allergy work up, telephone interviews were performed. Patients were asked whether they had reused the suspected macrolide or not. Patients who reported HR during subsequent drug intake were invited for reevaluation. Results: A total of 160 children (161 reactions) (55.6% male) with a suspicion of macrolide allergy were enrolled for the study, and all children had a mild index reaction. The median age was 48 (18-102) months, and the median time between the suspected allergic reaction and allergy work-up was 3 (2-8) months. The most frequently reported suspected agent was clarithromycin, in 151 patients (94.4%). Macrolide allergy was confirmed in 8 (5%) patients. Only one patient reported skin eruptions upon reuse despite a negative DPT and he was invited to be reevaluated. A second DPT was performed resulting in urticarial lesions. The NPV was found to be 97.4% for negative DPT with macrolides. Conclusion: Confirmed macrolide allergy is rare in children, and DPTs are the gold standard to assess suspected macrolide allergy. The NPV of macrolide provocation tests seems to be high in children. Keywords: Children, drug hypersensitivity, drug provocation test, macrolide, negative predictive value

scholarly journals Determining the negative predictive value of provocation tests with beta-lactams

Allergy ◽  
2010 ◽  
Vol 65 (3) ◽  
pp. 327-332 ◽  
Author(s):  
P. Demoly ◽  
A. Romano ◽  
C. Botelho ◽  
L. Bousquet-Rouanet ◽  
F. Gaeta ◽  
...  
Keyword(s):  
Negative Predictive Value ◽  
Predictive Value ◽  
Beta Lactams ◽  
Provocation Tests

Tissue plasminogen activator as a novel diagnostic aid in acute pulmonary embolism

VASA ◽  
2014 ◽  
Vol 43 (6) ◽  
pp. 450-458 ◽  
Author(s):  
Julio Flores ◽  
Ángel García-Avello ◽  
Esther Alonso ◽  
Antonio Ruíz ◽  
Olga Navarrete ◽  
...  
Keyword(s):  
Pulmonary Embolism ◽  
Negative Predictive Value ◽  
Plasminogen Activator ◽  
Tissue Plasminogen Activator ◽  
Predictive Value ◽  
Acute Pulmonary Embolism ◽  
Enzyme Linked Immunosorbent Assay ◽  
Diagnostic Utility ◽  
Tissue Plasminogen ◽  
D Dimer

Background: We evaluated the diagnostic efficacy of tissue plasminogen activator (tPA), using an enzyme-linked immunosorbent assay (ELISA) and compared it with an ELISA D-dimer (VIDAS D-dimer) in acute pulmonary embolism (PE). Patients and methods: We studied 127 consecutive outpatients with clinically suspected PE. The diagnosis of PE was based on a clinical probability pretest for PE and a strict protocol of imaging studies. A plasma sample to measure the levels of tPA and D-dimer was obtained at enrollment. Diagnostic accuracy for tPA and D-dimer was determined by the area under the receiver operating characteristic (ROC) curve. Sensitivity, specificity, predictive values, and the diagnostic utility of tPA with a cutoff of 8.5 ng/mL and D-dimer with a cutoff of 500 ng/mL, were calculated for PE diagnosis. Results: PE was confirmed in 41 patients (32 %). Areas under ROC curves were 0.86 for D-dimer and 0.71 for tPA. The sensitivity/negative predictive value for D-dimer using a cutoff of 500 ng/mL, and tPA using a cutoff of 8.5 ng/mL, were 95 % (95 % CI, 88–100 %)/95 % (95 % CI, 88–100 %) and 95 % (95 % CI, 88–100 %)/94 %), respectively. The diagnostic utility to exclude PE was 28.3 % (95 % CI, 21–37 %) for D-dimer and 24.4 % (95 % CI, 17–33 %) for tPA. Conclusions: The tPA with a cutoff of 8.5 ng/mL has a high sensitivity and negative predictive value for exclusion of PE, similar to those observed for the VIDAS D-dimer with a cutoff of 500 ng/mL, although the diagnostic utility was slightly higher for the D-dimer.

D-Dimer Test and Diagnosis of Deep Vein Thrombosis: A Comparative Study of 7 Assays

1996 ◽  
Vol 76 (04) ◽  
pp. 518-522 ◽  
Author(s):  
A Elias ◽  
I Aptel ◽  
B Huc ◽  
J J Chale ◽  
F Nguyen ◽  
...  
Keyword(s):  
Deep Vein Thrombosis ◽  
Negative Predictive Value ◽  
Predictive Value ◽  
Latex Agglutination ◽  
Lower Limbs ◽  
First Episode ◽  
Lower Sensitivity ◽  
Vein Thrombosis ◽  
Deep Vein ◽  
D Dimer

SummaryThe current D-Dimer ELISA methods provide high sensitivity and negative predictive value for the diagnosis of deep vein thrombosis but these methods are not suitable for emergency or for individual determination. We have evaluated the performance of 3 newly available fast D-Dimer assays (Vidas D-Di, BioMerieux; Instant IA D-Di, Stago; Nycocard D-Dimer, Nycomed) in comparison with 3 classic ELISA methods (Stago, Organon, Behring) and a Latex agglutination technique (Stago). One-hundred-and-seventy-one patients suspected of presenting a first episode of deep vein thrombosis were investigated. A deep vein thrombosis was detected in 75 patients (43.8%) by ultrasonic duplex scanning of the lower limbs; in 11 of them the thrombi were distal and very limited in size (<2 cm). We compared the performance of the tests by calculating their sensitivity, specificity, positive and negative predictive value for different cut-off levels and by calculating the area under ROC curves. The concordance of the different methods was evaluated by calculating the kappa coefficient. The performances of the 3 classic ELISA and of the Vidas D-Di were comparable and kappa coefficients indicated a good concordance between the results provided by these assays. Their sensitivity slightly declined for detection of the very small thrombi. Instant IA D-Di had a non-significantly lower sensitivity and negative predictive value than the 4 previous assays; however its performance was excellent for out-patients. As expected, the Latex assay had too low a sensitivity and negative predictive value to be recommended. In our hands, Nycocard D-Dimer also exhibited low sensitivity and negative predictive value, which were significantly improved when the plasma samples were tested by the manufacturer. Thus significant progress has been made, allowing clinical studies to be planned to compare the safety and cost-effectiveness of D-Dimer strategy to those of the conventional methods for the diagnosis of venous thrombosis.

Diagnosis of Deep Vein Thrombosis by Combination of Doppler Ultrasound Flow Examination and Strain Gauge Plethysmography

1982 ◽  
Vol 47 (02) ◽  
pp. 141-144 ◽  
Author(s):  
H Bounameaux ◽  
B Krähenbühl ◽  
S Vukanovic
Keyword(s):  
Deep Vein Thrombosis ◽  
Negative Predictive Value ◽  
Doppler Ultrasound ◽  
Strain Gauge ◽  
Predictive Value ◽  
Lower Limbs ◽  
Vein Thrombosis ◽  
Non Invasive ◽  
Strain Gauge Plethysmography ◽  
Deep Vein

SummaryDoppler ultrasound flow examination, strain gauge plethysmography and contrast venography were performed in 160 lower limbs of 80 in-patients. Deep vein thrombosis (DVT) was suspected in 87 limbs. Using measurement of venous stop-flow pressure, the Doppler method had an overall sensitivity of 83%. By combined use of Doppler and Plethysmography, sensitivity was increased to 96%. Specificity was 62% and 51%, respectively. With a positive and a negative predictive value of 80% and 73%, respectively, the combination of both non-invasive methods cannot reliably replace venography in the diagnosis of DTV, although all (40/40) thromboses proximal to or involving the popliteal segment were detected by either Doppler and Plethysmography or both.After exclusion of 14 patients (18%) suffering from conditions known to alter the results of these non-invasive methods, the positive predictive value of abnormal findings in both Doppler and Plethysmography was increased to 94% for suspected limbs, whilst negative predictive value of both negative Doppler and Plethysmography was 90%, allowing the avoidance of venography in these patients.

Case Report: FAST Ultrasound Interpretation in Trauma Resuscitation

POCUS Journal ◽  
2016 ◽  
Vol 1 (3) ◽  
pp. 13-14
Author(s):  
Stuart Douglas, PGY4 ◽  
Joseph Newbigging, MD ◽  
David Robertson, MD
Keyword(s):  
Case Report ◽  
Negative Predictive Value ◽  
Predictive Value ◽  
Life Support ◽  
Advanced Trauma Life Support ◽  
Trauma Patients ◽  
Ultrasound Probe ◽  
Trauma Resuscitation ◽  
Highly Sensitive ◽  
Pouch Of Douglas

FAST Background: Focused Assessment with Sonography for Trauma (FAST) is an integral adjunct to primary survey in trauma patients (1-4) and is incorporated into Advanced Trauma Life Support (ATLS) algorithms (4). A collection of four discrete ultrasound probe examinations (pericardial sac, hepatorenal fossa (Morison’s pouch), splenorenal fossa, and pelvis/pouch of Douglas), it has been shown to be highly sensitive for detection of as little as 100cm3 of intraabdominal fluid (4,5), with a sensitivity quoted between 60-98%, specificity of 84-98%, and negative predictive value of 97-99% (3).

Accuracy of Rotator Cuff Tears and Tendinosis Diagnoses on Shoulder Ultrasound Performed by a Short-experienced Operator

2018 ◽  
Vol 1 ◽  
pp. 9
Author(s):  
Harshad Arvind Vanjare ◽  
Jyoti Panwar
Keyword(s):  
Rotator Cuff ◽  
Negative Predictive Value ◽  
Rotator Cuff Tear ◽  
Predictive Value ◽  
Rotator Cuff Tears ◽  
Mri Findings ◽  
Cuff Tear ◽  
Experienced Operator ◽  
Magnetic Resonance Imaging Mri ◽  
Sensitivity Specificity

Objective The objective of the study was to assess the accuracy of ultrasound examination for the diagnosis of rotator cuff tear and tendinosis performed by a short experienced operator, compared to magnetic resonance imaging (MRI) results. Method A total of 70 subjects suspected to have rotator cuff tear or tendinosis and planned for shoulder MRI were included in the study. Shoulder ultrasound was performed either before or after the MRI scan on the same day. Ultrasound operator had a short experience in performing an ultrasound of the shoulder. Ultrasound findings were correlated to MRI findings. Results Sensitivity, specificity, positive predictive value, negative predictive value, and accuracy for the diagnosis of tendinosis were 58%, 84%, 63%, 80%, and 75%, respectively, and it was 68%, 91%, 73%, 88%, and 85%, respectively, for the diagnosis of rotator cuff tear. Conclusions Sensitivity for diagnosing rotator cuff tear or tendinosis was moderate but had a higher negative predictive value. Thus, the ultrasound operator with a short experience in performing shoulder ultrasound had moderate sensitivity in diagnosing tendinosis or tears; however, could exclude them with confidence.

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