Flawed Examination Technique?

2016 ◽  
Vol 25 (4) ◽  
pp. 525-532 ◽  
Author(s):  
Monica Lupșor-Platon ◽  
Radu Badea ◽  
Mirela Gersak ◽  
Anca Maniu ◽  
Ioana Rusu ◽  
...  

There has been great interest in the development of non-invasive techniques for the diagnosis of liver fibrosis in chronic liver diseases, including ultrasound elastographic methods. Some of these methods have already been adequately studied for the non-invasive assessment of diffuse liver diseases. Others, however, such as two-dimensional Shear Wave Elastography (SWE), of more recent appearance, have yet to be validated and some aspects are for the moment incompletely elucidated. This review discusses some of the aspects related to two-dimensional SWE: the examination technique, the examination performance indicators, intra and interobserver agreement and clinical applications. Recommendations for a high-quality examination technique are formulated. Key words:  –  –  – Two-dimensional Shear Wave Elastography. Abbreviations: 2D- SWE: Two-dimensional Shear Wave Elastography; 3D- SWE: Three-dimensional Shear Wave Elastography; AUROC: area under the receiver operating characteristic curves; ARFI Acoustic Radiation Force Impulse Elastography; EFSUMB: European Federation of Societies for Ultrasound in Medicine and Biology; HVPG: hepatic venous pressure gradient; LS: liver stiffness; LR: likelihood ratio; NPV: negative predictive value; PPV: positive predictive value; ROI: region of interest; RT-E: Real Time-Elastography; Se: sensitivity; Sp: specificity; TE: Transient Elastography; US: ultrasound; VM: valid measurement; E: Young’s modulus


2021 ◽  
pp. 175045892097607
Author(s):  
Rojas Moya Desiree ◽  
Russell Kabir

The presentation of this case study involves an exploration of the patient's journey in detail after having a traumatic wrist fracture, which is recognised as one of the most common fractures encountered daily in emergency services by junior doctors and practitioners. However, this article not only analyses the medical guidance for this type of case, but also the importance of the surgical care practitioner role in trauma and orthopaedics. All practitioners attending patients in emergency services are required to develop a good knowledge of anatomy, physiology, patient’s examination technique, classifications and consequently being aware of the possible surgical options for treatment of the fracture. They will also need to fully understand the legal implications of consent to ensure safe practice.


Angiology ◽  
1980 ◽  
Vol 31 (3) ◽  
pp. 154-163 ◽  
Author(s):  
A.J. Tripolitis ◽  
W.M. Blackshear ◽  
K.C. Bodily ◽  
B.L. Thiele ◽  
D.E. Strandness

2020 ◽  
Vol 94 ◽  
Author(s):  
T. Irie ◽  
T. Ito ◽  
H. Kouguchi ◽  
K. Uraguchi

Abstract Epidemiological studies of Echinococcus multilocularis infections in definitive hosts require a reliable and economic diagnostic method. In this study, the current copro-DNA examination technique was modified by increasing the faecal amounts tested and adding a step to neutralize the faeces before DNA extraction. Reliability of the modified method was evaluated using rectal faecal samples from red foxes and comparing them with intestinal worms detected using the sedimentation and counting technique (SCT) following necropsy. The modified copro-DNA examination method demonstrated 93.9% sensitivity (138/147) on the SCT. Its detectability increased depending on the worm burden, and the sensitivity was 100% in cases harbouring over 1000 worms. From 111 SCT-negative cases, six (5.4%) were copro-DNA-positive, and all were confirmed as E. multilocularis via sequencing analysis. Five of the remaining 105 SCT-negative cases (4.8%) retained polymerase chain reaction (PCR) inhibitors in the extracted solution, suggesting that approximately 5% of the red fox faeces retained these inhibitors after treatment with the present copro-DNA extraction method. Although further evaluation is needed for faeces deposited in the wild, the present copro-DNA examination technique will help monitor the E. multilocularis prevalence in definitive hosts. When used for detailed evaluations of endemicity (e.g. changes in infection pressure or spread in non-endemic areas), the absence of PCR inhibitors should be confirmed, and multiple trials on faecal subsamples are recommended.


PEDIATRICS ◽  
1967 ◽  
Vol 39 (1) ◽  
pp. 115-118

FOREWORD: We have recently revised our approach to the preparation of children for pyelography, barium studies, and other fluoroscopic and contrast examinations. These directions (distributed to attending physicians, house staff, and hospital and clinic nurses) follow, slightly abbreviated. Perhaps they will be of interest to pediatricians and radiologists, especially those practicing in institutions where large numbers of children are not seen or where children make up only a small part of the x-ray work load. The protocol is based primarily on our own experience, although we have consulted the systems used in several other general and children's hospitals. Since this revision was only recently introduced, it is not yet time tested and will doubtless be modified as circumstances and thinking change. It is presented only as the approach to patient preparation used locally at this time. All such systems inevitably represent compromises between the ideal and the reasonably attainable; diagnostic zeal must sometimes bow to practicality. The footnotes will point out some of our compromises. The footnotes also include comments on examination technique. At other centers or in other patient populations, these compromises might be neither necessary nor desirable. But, we are trying to care for children by getting studies of diagnostic quality and not trying to accumulate pretty pictures or fit infants into adult stereotypes. The comfort of the child cannot be ignored when rigorous preparation maneuvers such as repeated enemas and strong cathartics are being considered, and preparation must often be individualized. Since most x-ray departments deal largely with adults, often elderly adults, adult routines sometimes tend to be applied unquestioningly to children.


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