Pediatric Cardiac Anamnesis: Prevention of Additional Diagnostic Tests

Designing an openEHR-Based Pipeline for Extracting and Standardizing Unstructured Clinical Data Using Natural Language Processing

Background  Merging disparate and heterogeneous datasets from clinical routine in a standardized and semantically enriched format to enable a multiple use of data also means incorporating unstructured data such as medical free texts. Although the extraction of structured data from texts, known as natural language processing (NLP), has been researched at least for the English language extensively, it is not enough to get a structured output in any format. NLP techniques need to be used together with clinical information standards such as openEHR to be able to reuse and exchange still unstructured data sensibly.

Objectives  The aim of the study is to automatically extract crucial information from medical free texts and to transform this unstructured clinical data into a standardized and structured representation by designing and implementing an exemplary pipeline for the processing of pediatric medical histories.

Methods  We constructed a pipeline that allows reusing medical free texts such as pediatric medical histories in a structured and standardized way by (1) selecting and modeling appropriate openEHR archetypes as standard clinical information models, (2) defining a German dictionary with crucial text markers serving as expert knowledge base for a NLP pipeline, and (3) creating mapping rules between the NLP output and the archetypes. The approach was evaluated in a first pilot study by using 50 manually annotated medical histories from the pediatric intensive care unit of the Hannover Medical School.

Results  We successfully reused 24 existing international archetypes to represent the most crucial elements of unstructured pediatric medical histories in a standardized form. The self-developed NLP pipeline was constructed by defining 3.055 text marker entries, 132 text events, 66 regular expressions, and a text corpus consisting of 776 entries for automatic correction of spelling mistakes. A total of 123 mapping rules were implemented to transform the extracted snippets to an openEHR-based representation to be able to store them together with other structured data in an existing openEHR-based data repository. In the first evaluation, the NLP pipeline yielded 97% precision and 94% recall.

Conclusion  The use of NLP and openEHR archetypes was demonstrated as a viable approach for extracting and representing important information from pediatric medical histories in a structured and semantically enriched format. We designed a promising approach with potential to be generalized, and implemented a prototype that is extensible and reusable for other use cases concerning German medical free texts. In a long term, this will harness unstructured clinical data for further research purposes such as the design of clinical decision support systems. Together with structured data already integrated in openEHR-based representations, we aim at developing an interoperable openEHR-based application that is capable of automatically assessing a patient's risk status based on the patient's medical history at time of admission.

Rare Diseases and Orphan Drugs Accessibility in Bosnia and Herzegovina

Introduction:

Rare diseases are becoming more and more important since awareness is increasing. There are a lot of initiatives to ensure access to orphan drugs intended to treat these diseases but due to high price patients have low access and policy makers and payers are struggling with costs and assuring patient access rights to the available medication.

Aim:

Objective of this study is to assess current situation regarding rare diseases in Bosnia and Herzegovina (BiH) and availability of orphan drugs. Four domains are examined: legislation and policy, diagnostics and research, patient organizations and reimbursement and availability of medicines for rare diseases.

Results:

There are official programs and legislation ground for rare diseases in both entities of BiH: Republic of Srpska (RS) and Federation of BiH (FBiH). Diagnostic and genetic counseling are available but only for few rare diseases. Patient organizations are formed and active but still without engagement in some of international organizations. There are no special reimbursement criteria for orphan medicines. Number of reimbursed medicines is significantly lower than those on ORPHANET list, 67 and 26 in RS and FBiH respectively. Huge difference in number of reimbursed medicines within the country entities may be consequence of counting method.

Conclusion:

Even thou rare diseases in BiH are recognized in countries official programs and documents, with patients having their organizations, much more have to be done in availability of medicines and diagnostics in the rare disease field. Insufficient funds are huge obstacle toward this goal. New methods of medicine evaluation are need and recommended in order of better availability.

Causes of an Increased Rate of Caesarean Section

Introduction:

The increase in the percentage of the Cesarean sections has got an important place in determination of modern obstetrics. The evaluation of that needs actual, modern opinion for obstetrics and transformation actual obstetric science than investigating the best situation for the mother and child in the actual moment. All medical, organizational, economic and ethical capacities with support of modern diagnostic and therapeutic procedures present a reason for the access in modern obstetrics. It takes the descriptive and analytic method at work. In our country the percentage of the Caesarean section is 15% (according to WHO data), with large variations in frequency depending on the writer and the investigated time.

Aim:

To investigate the prevalence of Cesarean section in Bosnia and Herzegovina until 2017.

Patients and Methods:

In our investigation made prospective and target analysis is investigated at 2017 as a target year. Sources are: patient charts, notes and charts of new born. Group A presents number investigated patients with made Cesarean section in time at one year (2017) in General hospital „Prim.dr A.Nakaš“. Group B presents control group with identical number of deliveries with Cesarean section in 2007 in General hospital „Prim.dr A. Nakaš“ with all variables who detected in investigation group.

Results:

Analysis the number of deliveries finished Cesarean section in time from 2007 to 2017 in General hospital „Prim.dr Abdulah Nakaš “Sarajevo presents augmentation frequency from 15,5 % in 2007 year to 21,7 % in 2011; smaller number in 2012 to 20,3% and finally 22.9% in 2017 for all deliveries.

Conclusion:

Our investigation shows an important number of Cesarean section and is still working because of clearer obstetric indication but they make a vital indication for the mother and baby. It worries percent of poorly described indications, that are something important for the comfort of doctor and any patients that wants natural delivery. It worries the public because the more important short term and long-term unwanted effects; Cesarean delivery in correlation with augmentation of this operation.

Management and Invasive Cardiological Review by Comparison of Percutaneous Coronary Intervention in Left Anterior Descending Artery with Drug Eluting and Bare Metal Stents

Introduction:

The dominant global public health challenge are non-communicable diseases. According to World Health Organization (WHO) data. The fifth leading causes of death in FB&H are diseases of the heart and coronary arteries: stroke, acute myocardial infarction, cardiac arrest, cardiomyopathy and essential hypertension. The prevention of these diseases has great importance in improving health in B&H.

Objective:

The aim of this study is in estimation of one-year survival and left heart systolic function after the treatment. After the data collection and evidence of their statistical value, the results of the research point to the profile of patients with a LAD disease in one-vessel coronary artery disease that should be subjected to PCI DES LAD and PCI BMS LAD, respectively, or creating guidelines for a better and more effective LAD treatment.

Material and methods:

The study was performed as retrospective/ prospective, clinically controlled for a period of three years. In this study was included 60 patients, which was followed in 12 months period. With the PCI BMS method was treated 63.3% and 36.7% of subjects were treated with the PCI DES in LAD.

Conclusion:

The number of complications in patients with one-vessel LAD coronary heart disease, treated with PCI DES and PCI BMS was statistically significant. One possible complication (4 patients) is due to the spread of the disease to other blood vessels. Due to possible complications in the treated or LAD with repeated stenosis, the complication in terms of restenosis of the previously placed stent in 75% are with BM stents justifying the use of drug eluting stent, while the progression of disease in patients (2 patients) indicates the need for detection and prevention of risk factors.