Ultrasound education across European Federation of Radiographers Societies (EFRS) countries: Similarities and differences

INTRODUCTION

Ultrasound education varies greatly across European healthcare systems. This paper focuses on ultrasound academic education as a part of wider suite of surveys on radiographers working in ultrasound. The aim was to investigate sonography educational levels, methods of training, course duration and other factors in European Federation of Radiographers Societies (EFRS) member countries.

METHOD

In 2019 an online survey was sent to the 38 EFRS member societies to distribute to higher education institutions within their own country. The survey was in English and contained different types of questions such as closed questions, free text options, and scale responses, to investigate sonography education including academic course types and duration, curriculum content, learning and teaching methods.

RESULTS

A total of 45 responses were received, showing wide variation in the duration of training between the respective countries. Academic level 7 (part-time) ultrasound education was most frequently reported (n = 13), followed by direct entry ultrasound courses (n = 9) and bachelor's degree programmes at EQF level 6 (n = 7). The duration of part-time courses ranged from nine months up to four years.

CONCLUSION

Sonography training and education varies among EFRS member countries ranging from short focused courses to postgraduate awards. Few countries offer sonography education leading to an award. The majority of clinical teaching and learning takes place in the learner's workplace.

IMPLICATIONS FOR PRACTICE

High quality academic and clinical education for radiographers extending their role into ultrasound is important to ensure safe, effective sonography practice and good patient care.

Sonographers' perspectives on research - A worldwide online questionnaire study

INTRODUCTION

Research has been performed by sonographers (also known as ultrasound reporting radiographers) for many years for improving diagnosis of disease, developing new imaging approaches, and enhancing patient outcomes. Despite this, sonographers' perspectives on research have not been well studied. To understand the views of sonographers is essential, as they have an important role in the successful implementation of research outcomes during their daily work. The study aimed to explore sonographers' perspectives on research.

METHODS

This cross-sectional online questionnaire was developed, and pilot tested, before distribution on social media platforms by the research group to sonographers or reporting radiographers in ultrasound worldwide. The questionnaire included 21-items. The link was open for 8 weeks in the spring of 2023. A mix of closed, open and scale questions were used. Informed consent was mandatory, and information about the study and anonymity was presented.

RESULTS

A total of 165 sonographers participated in the questionnaire of which 66.1 % were from Europe (n = 109), 6.1 % from North America (n = 10), 0.6 % from South America (n = 1), 2.4 % from Asia (n = 4), 13.3 % from Africa (n = 22) and 11.5 % from Oceania (n = 19). A total of 32 % of the participants had performed research. Also, 68.5 % would like to become more involved in research.

CONCLUSION

Most sonographers work in large hospitals, and half of them have obtained academic level 7 education. A limited number of sonographers have published peer reviewed papers. Many sonographers expressed an interest in research. This suggests a potential for future development of the sonographers' role in research.

IMPLICATIONS FOR PRACTICE

The findings for this study provide insight that could be used to improve research practice for sonographers.

Detection of enteric viruses and SARS-CoV-2 in beach sand

Beach sand harbors a diverse group of microbial organisms that may be of public health concern. Nonetheless, little is known about the presence and distribution of viruses in beach sand. In this study, the first objective was to evaluate the presence of seven viruses (Aichi virus, enterovirus, hepatitis A virus, human adenovirus, norovirus, rotavirus, and severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2)) in sands collected at public beaches. The second objective was to assess the spatial distribution of enteric viruses in beach sand. To that end, 27 beach sand samples from different beaches in Portugal were collected between November 2018 and August 2020 and analyzed for the presence of viruses. At seven beaches, samples were collected in the supratidal and intertidal zones. Results show that viruses were detected in 89 % (24/27) of the sand samples. Aichi virus was the most prevalent (74 %). Noroviruses were present in 19 % of the samples (norovirus GI - 15 %, norovirus GII - 4 %). Human adenovirus and enterovirus were detected in 48 % and 22 % of the samples, respectively. Hepatitis A virus and rotavirus were not detected. Similarly, SARS-CoV-2 in beach sand collected during the initial stages of the pandemic was also not detected. The detection of three or more viruses occurred in 15 % of the samples. Concentrations of viruses were as high as 7.2 log copies (cp)/g of sand. Enteric viruses were found in higher prevalence in sand collected from the supratidal zone compared to the intertidal zone. Human adenovirus was detected in 43 % of the supratidal and 14 % in the intertidal samples and Aichi virus in 57 % and 86 % of the intertidal and supratidal areas, respectively. Our findings suggest that beach sand can be a reservoir of enteric viruses, suggesting that it might be a vehicle for disease transmission, particularly for children, the elderly, and immunocompromised users.

A new case of platelet-type von Willebrand disease supports the recent findings of gain-of-function GP1BA variants outside the C-terminal disulphide loop enhances affinity for von Willebrand factor

Platelet-type von Willebrand disease (PT-VWD) is a rare autosomal dominant bleeding disorder characterized by an increased ristocetin-induced platelet aggregation (RIPA) and enhanced affinity of platelet glycoprotein Ibα (GPIbα) to von Willebrand factor (VWF). To date, only seven variants have been described with this gain-of-function effect, most of them located in the C-terminal disulphide loop of the VWF-binding domain of GPIbα. We herein describe a patient with moderate bleeding symptoms, mild thrombocytopenia and increased RIPA. By direct sequencing of GP1BA, a novel leucine-rich repeat heterozygous variant was identified (c.580C>T; predictably p.Leu194Phe), strongly suggestive as being the underlying cause for the PT-VWD phenotype of our patient.

Patients' experiences of a suppoRted self-manAGeMent pAThway In breast Cancer (PRAGMATIC): quality of life and service use results

PURPOSE

To describe trends and explore factors associated with quality of life (QoL) and psychological morbidity and assess breast cancer (BC) health service use over a 12-month period for patients joining the supported self-management (SSM)/patient-initiated follow-up (PIFU) pathway.

METHODS

Participants completed questionnaires at baseline, 3, 6, 9 and 12 months that measured QoL (FACT-B, EQ 5D-5L), self-efficacy (GSE), psychological morbidity (GHQ-12), roles and responsibilities (PRRS) and service use (cost diary).

RESULTS

99/110 patients completed all timepoints; 32% (35/110) had received chemotherapy. The chemotherapy group had poorer QoL; FACT-B total score mean differences were 8.53 (95% CI: 3.42 to 13.64), 5.38 (95% CI: 0.17 to 10.58) and 8.00 (95% CI: 2.76 to 13.24) at 6, 9 and 12 months, respectively. The odds of psychological morbidity (GHQ12 >4) were 5.5-fold greater for those treated with chemotherapy. Financial and caring burdens (PRRS) were worse for this group (mean difference in change at 9 months 3.25 (95% CI: 0.42 to 6.07)). GSE and GHQ-12 scores impacted FACT-B total scores, indicating QoL decline for those with high baseline psychological morbidity. Chemotherapy patients or those with high psychological morbidity or were unable to carry out normal activities had the highest service costs. Over the 12 months, 68.2% participants phoned/emailed breast care nurses, and 53.3% visited a hospital breast clinician.

CONCLUSION

The data suggest that chemotherapy patients and/or those with heightened psychological morbidity might benefit from closer monitoring and/or supportive interventions whilst on the SSM/PIFU pathway. Reduced access due to COVID-19 could have affected service use.

The goby fish Sicydium spp. as valuable sentinel species towards the chemical stress in freshwater bodies of West Indies

Implementation of the European Water Framework Directive in tropical areas such as the French West Indies (FWI) requires to select relevant aquatic sentinel species for investigating the ecological status of surface waters. The present work aimed to study the biological response of the widespread fish Sicydium spp. towards river chemical quality in Guadeloupe island through a set of proper biomarkers. During a 2-year survey, the hepatic EROD activity, the micronucleus formation and the level of primary DNA strand breaks in erythrocytes were measured respectively as an enzymatic biomarker of exposure and genotoxicity endpoints in fish living upstream and downstream of two chemically-contrasted rivers. Hepatic EROD activity was shown to be variable along the time but always significantly higher in fish from the most contaminated river (Rivière aux Herbes) compared to the low contaminated one (Grande Rivière de Vieux-Habitants). Fish size did not influence EROD activity. Female fish exhibited a lower EROD activity compared to males depending on the catching period. We observed significant temporal variation in micronucleus frequency and primary DNA damage level measured in fish erythrocytes that did not depend on the fish size. Micronucleus frequency and to a lesser extent DNA damage were significantly higher in fish from the Rivière aux Herbes compared to the Grande Rivière de Vieux-Habitants. Our results argue for the interest of using Sicydium spp. as sentinel species to assess river quality and chemical pressures in FWI.

[Medication Reconciliation during Admission to an Internal Medicine Department: The Perspective of Primary Health Care]

N/a.

The role of hospital antimicrobial and infectious diseases pharmacists in the UK: a theoretically underpinned exploration

Objectives

We sought to characterise the role of hospital infection pharmacists in the UK and to understand the core challenges being faced, future role development desires and the required support to address these.

Methods

We developed a questionnaire underpinned by the theoretical domains framework exploring the barriers and enablers to pharmacists fulfilling their perceived roles and responsibilities. Any pharmacist whose role included 'specialist antimicrobial' or 'infectious diseases' was invited to complete a questionnaire sent via national infection and pharmacy groups/networks. Descriptive statistics were used to report responses to each item, and a content analysis was undertaken to summarize the key messages from an extended response option.

Results

Of the 102 respondents, 91 (89.2%) were from English hospitals. Fifty-three (52%) were from district general hospitals and 45 (45.1%) from teaching hospitals. Most (97, 95%) respondents were of a senior grade. The need for a comprehensive educational programme, recognition of research as core to the role and integration with infection/microbiology departments were key requirements along with protected time to engage with the activities. Highlights of the role were opportunities to teach, making a significant contribution to patient care and scope to contribute to strategy and vision. The COVID-19 pandemic negatively impacted on respondents' capacity to undertake their perceived roles and responsibilities.

Conclusions

Our study delineates the need for UK infection and pharmacy policy makers to review hospital infection pharmacist developmental pathways and roles. Joint learning, and closer working, with infection/microbiology departments may be an efficient strategy to address the issues raised.

Missense MED12 variants in 22 males with intellectual disability: From nonspecific symptoms to complete syndromes

We describe the phenotype of 22 male patients (20 probands) carrying a hemizygous missense variant in MED12. The phenotypic spectrum is very broad ranging from nonspecific intellectual disability (ID) to the three well-known syndromes: Opitz-Kaveggia syndrome, Lujan-Fryns syndrome, or Ohdo syndrome. The identified variants were randomly distributed throughout the gene (p = 0.993, χ² test), but mostly outside the functional domains (p = 0.004; χ² test). Statistical analyses did not show a correlation between the MED12-related phenotypes and the locations of the variants (p = 0.295; Pearson correlation), nor the protein domain involved (p = 0.422; Pearson correlation). In conclusion, establishing a genotype-phenotype correlation in MED12-related diseases remains challenging. Therefore, we think that patients with a causative MED12 variant are currently underdiagnosed due to the broad patients' clinical presentations.

Cardiopulmonary exercise testing in Fontan patients: unmasking the secret of Super-Fontans

Background

Exercise capacity is usually reduced in Fontan patients, however there is a subset of patients who have normal exercise capacity and better outcomes, the “Super-Fontans”. The aim of this study was to characterize a cohort of Fontan patients undergoing cardiopulmonary exercise testing (CPET) and identify predictors of better functional capacity.

Methods

Single center retrospective analysis of consecutive Fontan patients aged >10 years old who underwent CPET, between March 2018 and May 2021.

Peak respiratory exchange ratio1.05 defined maximal CPET. Peak VO2 (pVO2) as a percentage of its predicted value was used as reference value to stratify patients in tertiles.

Patients in 3rd tertile, with a percentage predicted pVO2 superior to 75%, were considered good-performers.

Blood tests and transthoracic echocardiogram (TTE) were performed on the same day. Additional data were collected from electronic charts.

Results

In total, 49 patients were included (mean age 19±7 years old, 67% male) with intra or extracardiac conduit implanted in mean 12±7 years prior to the CPET.

The most common primary diagnoses were tricuspid/pulmonary atresia (43%), followed by unbalanced complete AV septal defect (14%) and double inlet left ventricle (14%). 12 patients had a systemic right ventricle. All, except 5 patients, had preserved systolic ventricular function and 37% had moderate to severe AV regurgitation.

The majority had normal hemoglobin levels (median 15.6 g/dL), hepatic enzymes (median total bilirubin 0.8 mg/dL), renal function (median creatinine 0.8 mg/dL) and low NT-proBNP (median 122 pg/mL).

All patients had maximal CPET, median %VO2 at VT1 was 57% of peak and mean pVO2 was 66±14% of the predicted. Most patients (69%) showed exercise limitation due to cardiovascular cause, followed by O2 desaturation, present in 22% of CPETs. The age of Fontan completion was not associated with functional capacity (p=0.6).

The good-performer group comprised 13 patients (27%), all in sinus rhythm, of which 10 were physically active. Compared with the remainder, this group had higher VO2 at VT1 (18.7 vs. 14.6, p=0.01) and VO2 at VT2 (25.9 vs. 22.1, p=0.02), both in mL/kg/min. Also, peak heart rate (% predicted) (90 vs. 81, p=0.03) was higher in this subgroup – fig.1. Conversely, differences on TTE parameters (GLS and AV valve regurgitation) and blood biomarkers were not statistically significant. On multivariable analysis, no single variable predicted better functional capacity.

Conclusion

In our Fontan cohort, most patients had reduced exercise capacity, largely due to cardiovascular dysfunction. However, “Super-Fontans” stood out as they had a higher anaerobic threshold illustrating their better physical condition. These findings highlight the role of regular physical activity in Fontan patients as a cornerstone for better functional capacity.

Funding Acknowledgement

Type of funding sources: None.

Potential impact of replacing SCORE with SCORE-2 on risk classification and statin eligibility – a coronary calcium score correlation study

Background

Recently, the European Society of Cardiology issued new algorithms to estimate the 10-year risk of atherosclerotic cardiovascular disease (ASCVD), along with new age-specific thresholds to classify individuals as low-to-moderate, high, or very-high risk.

The aim of this study was to compare the latest SCORE-2 model with the older SCORE (Systematic COronary Risk Evaluation) in their ability to identify individuals with high coronary artery calcium score (CACS), and assess the relationship between potential eligibility for statin therapy and CACS.

Methods

Individuals 40–69 years old without diabetes or known ASCVD were identified in a single center registry of patients undergoing CACS and coronary CT angiography for suspected coronary artery disease. SCORE and SCORE-2 were calculated and used with each patient's untreated LDL-C values to assess eligibility for statin therapy. High CACS was defined as an Agatston score ≥100.

Results

A total of 389 pts (46% men, mean age 58±8 years) were included, of which 15% (n=60) were active smokers. The mean systolic blood pressure and untreated LDL-C values were 136±17 mmHg and 155±65 mg/dL, respectively.

The proportion of patients classified as low-to-moderate risk, high risk, and very high risk was 93%, 6% and 1% using the SCORE algorithm, and 42%, 44%, and 14% using SCORE-2, respectively. Overall, 218 patients (56%) would have their risk category revised upwards, while no patients would be downgraded.

The median CACS was 5 (IQR 0–71 AU), with 166 patients (43%) having CACS = 0, and 81 (21%) presenting CACS values ≥100.

SCORE and SCORE-2 showed similar discriminative power to identify patients with CACS ≥100 (C-statistic 0.77, 95% CI 0.71–0.82, vs. 0.75, 95% CI 0.69–0.80, P=0.109 for comparison]. The up-reclassification of risk conveyed by SCORE-2 affected patients across all categories of CACS (Fig. 1).

The proportion of patients in whom statin therapy would generally be indicated was higher with the SCORE-2 criteria vs. the SCORE algorithm (61% vs. 29%, respectively, p<0.001). The broadening of potential indication for statin therapy spanned all categories of CACS, including patients with CACS = 0 (Fig. 2).

Conclusion

Even though the discriminative power of SCORE-2 is similar to the older SCORE, the introduction of age-specific thresholds results in the up-reclassification of risk in roughly half of the patients. The application of SCORE-2 will broaden statin eligibility overall, not only in patients with high atherosclerotic burden, but also in those with CACS = 0. These findings support the use of risk modifiers in selected patients to improve the effectiveness of statin therapy.

Funding Acknowledgement

Type of funding sources: None.

Use of coronary calcium score to refine the cardiovascular risk classification of the new SCORE2 and SCORE2-OP algorithms in patients undergoing coronary CT angiography

Introduction

Recently, the European Society of Cardiology issued new algorithms (SCORE-2 and SCORE2-OP) to estimate the 10-year risk of atherosclerotic cardiovascular disease (ASCVD). CACS has been shown to reclassify a significant proportion of patients when applied on top of several scores, but data on its use with these new algorithms are lacking.

The aim of this study was to assess the risk reassignment that can be attained by using CACS as a risk modifier of the SCORE-2 / SCORE2-OP classification, in patients referred for coronary CT angiography (CCTA).

Methods

Individuals without diabetes or known ASCVD were included in a single center registry of patients undergoing CCTA for suspected coronary artery disease (CAD). The 10-year risk of cardiovascular disease was calculated for each patient using SCORE-2 (ages 40–69) or SCORE2-OP (ages 70–89), and categorised as low-to-moderate, high, or very-high risk, according to guideline-recommended age-specific thresholds. CACS was considered to reclassify risk one level downward if = 0 in high or very-high risk patients, and reclassify risk upward if >100 (or >75th percentile) in those with low-to-moderate risk, or >1000 in those with high-risk.

Results

A total of 529 patients (43% men, mean age 63±10 years) were included, of which 13% (n=69) were active smokers. The mean systolic blood pressure and non-HDL-C values were 137±18 mmHg and 140±37 mg/dL, respectively.

A total of 47 patients (9%) had obstructive CAD on CCTA, classifying them as very-high risk. In the remainder 482 patients without obstructive CAD, the median CACS was 8 (IQR 0–80 AU), with 194 patients (40%) having CACS = 0, and 111 (23%) presenting CACS values ≥100.

The proportion of patients classified as low-to-moderate risk, high risk, and very high risk was 36%, 46% and 19% using the SCORE-2 / SCORE2-OP algorithm.

Using CACS would reclassify 150 patients (31%): 107 patients (22%) downward, and 43 patients (9%) upward. The extent of risk reclassification conveyed by CACS was 33% in patients assessed with SCORE-2, and 25% with SCORE-2 OP (p=0.082). Overall, most of the risk reassignment (42%, n=93) would occur in patients originally classified as high-risk – Fig. 1.

At the time of testing, 32% (n=61) of patients with CACS = 0 were being treated with statins, whereas 52% (n=58) of those with CACS ≥100 were not.

Conclusion

Even when the most recent SCORE-2 / SCORE-2 OP algorithms are used, risk refinement with CACS leads to the reclassification of nearly one third of the patients undergoing CCTA, mostly from downgrading risk. This opportunistic use of CACS may be employed to improve the allocation of primary prevention therapies.

Funding Acknowledgement

Type of funding sources: None.

Subarachnoid and subdural haematoma after attempted spinal anaesthesia for caesarean section

We report a case of a previously healthy patient who developed a vertebral canal haematoma in the subarachnoid and subdural spaces after a spinal puncture for elective caesarean section. Vertebral canal haematomas are rare. There are different mechanisms for haematoma formation, but coagulation disturbances and trauma, most often due to needle punctures, are the most important. Vertebral canal haematoma may warrant emergent surgical decompression. In this case report we discuss vertebral canal haematomas, including possible mechanisms, clinical diagnosis, imaging modalities, methods for management and advice for patients. We consider the possible association between a vertebral canal haematoma and non-steroidal anti-inflammatory drugs, and draw attention to an existing black box warning for ketorolac. In this case, we explain why a conservative approach was chosen with a good outcome. We also report the effect of this complication on the patient experience.

Phase III impact of telerehabilitation in patients with coronary heart disease

Funding Acknowledgements

Type of funding sources: None.

Introduction

Cardiac rehabilitation (CR) in coronary heart disease (CAD) has been shown to improve physical capability and health-related quality of life, reducing morbimortality. However, CR accessibility is still low and patient adherence remains poor. It has been hypothesized that using mobile applications to telemonitor exercise-based CR would increase patient adherence to CR, improving results. Hybrid cardiac telerehabilitation (HCTR) is a new concept that includes center and home interventions.

Objectives

Investigate the effects of HCTR program on improving physical activity, quality of life and reducing cardiovascular risk factors among patients with CAD 1 year after CR phase II.

Materials and methods

Longitudinal retrospective study with patients who attended phase 2 CR program (CRP) at a hospital center between august 2018-november 2020. They were divided in 2 groups: group 1 completed conventional CRP (CCRP), 12 weeks of monitored hospital physical exercise and educational sessions; group 2 participated on HCTR program (CCRP associated to a tele-monitorization platform consisting of a mobile application, MOVIDA.eros, with medical prescription of physical exercise and remote interaction). Group 2 maintained use of MOVIDA.eros on phase 3. Evaluations were performed on T0 – phase 2 onset, T1 – end of phase 2, T2 – 1 year after T1, with registration of age, gender, occupation, body mass index (BMI), exercise stress testing, echocardiogram (evaluation of left ventricular ejection fraction [LVEF]), LDL, HDL cholesterol, triglycerides, NTproBNP levels, and application of EuroQol-5D questionnaire (EQ5D), International Physical Activity Questionnaire – Short Form (IPAQ).

Statistical analysis was completed through software SPSS v28. p-values <0.05 were considered statistically significant.

Results

We analyzed 68 patients, 46 on group 1 and 22 on group 2. Variable analysis revealed similar group characteristics, except for age (p=0.011) and LVEF (p=0.005). There was an association between HCTR adherence and occupation (p=0.002; greater proportion of intellectual professionals on group 2). We observed a significant IPAQ (p=0.018) and EQ-5D index (p=0.034) improvement between T0 to T1 in both groups, but only in group 2 persisted till T2. In exercise stress testing, both groups revealed an increase in METs at T1 and decrease at T2, without significant differences between them. Regarding lipid profile, HbA1c, NTproBNP and BMI, both groups improved from T0 to T1 maintaining it till T2 with no differences between them, however in group 2 HDL cholesterol levels were greater and HbA1c levels were lower than group 1. In both groups, LVEF increased from T0 to T1 and from T1 to T2 in both groups, with faster and higher improvement in group 2.

Conclusions

HCTR outperformed CCRP improving physical activity, patient quality of life, HDL cholesterol and faster improvement of LVEF. These findings encourage the use of a mobile platform in CR.

Use of the FMR1 Gene Methylation Status to Assess the X-Chromosome Inactivation Pattern: A Stepwise Analysis

X-chromosome inactivation (XCI) is a developmental process to compensate the imbalance in the dosage of X-chromosomal genes in females. A skewing of the XCI pattern may suggest a carrier status for an X-linked disease or explain the presence of a severe phenotype. In these cases, it is important to determine the XCI pattern, conventionally using the gold standard Human Androgen-Receptor Assay (HUMARA), based on the analysis of the methylation status at a polymorphic CAG region in the first exon of the human androgen receptor gene (AR). The aim of this study was to evaluate whether the methylation status of the fragile mental retardation protein translational regulator gene (FMR1) can provide an XCI pattern similar to that obtained by HUMARA. A set of 48 female carriers of FMR1 gene normal-sized alleles was examined using two assays: HUMARA and a FMR1 methylation PCR (mPCR). Ranges were defined to establish the XCI pattern using the methylation pattern of the FMR1 gene by mPCR. Overall, a 77% concordance of the XCI patterns was obtained between the two assays, which led us to propose a set of key points and a stepwise analysis towards obtaining an accurate result for the XCI pattern and to minimize the underlying pitfalls.

Anesthesia or seizure-like behavior? The effects of two Amazonian plants, Acmella oleracea and Piper alatabaccum in zebrafish (Danio rerio)

Abstract Currently, available fish anesthetics can produce important side effects, including respiratory arrest and distress. Easy-to-implement alternatives with low toxicity are needed to ensure fish health as well as to help artisanal fisheries and fish sellers in handling and transporting fishes, and native plants seems to be the best alternative. We aimed to implement an anesthetic protocol using crude ethanolic extracts from flowers and leaves of two Amazonian plants, the Acmella oleracea and Piper alatabaccum. We first tested the extracts for anesthesia, using the zebrafish as model. Even though in some treatments the animals apparently entered deep anesthesia, many of them presented aberrant behaviors and even died. Thus, we performed new experiments testing the extracts effects on seizure-like behaviors of the fish. Only the leaf extract of A. oleracea has potential effects for fish anesthesia. Both the flower extract from this plant and the leaf extract from P. alatabaccum induced seizure-like behavior in the animals. In conclusion, besides bringing a possible new anesthetic protocol for fish, our work draws attention for the neurotoxic effects the anesthetic solutions may cause, since several studies defend other Piper species as anesthetic for fish and A. oleracea flowers’ extract was already pointed as fish anesthetic.

Can the Synergic Contribution of Multigenic Variants Explain the Clinical and Cellular Phenotypes of a Neurodevelopmental Disorder?

We describe an infant female with a syndromic neurodevelopmental clinical phenotype and increased chromosome instability as cellular phenotype. Genotype characterization revealed heterozygous variants in genes directly or indirectly linked to DNA repair: a de novo X-linked HDAC8 pathogenic variant, a paternally inherited FANCG pathogenic variant and a maternally inherited BRCA2 variant of uncertain significance. The full spectrum of the phenotype cannot be explained by any of the heterozygous variants on their own; thus, a synergic contribution is proposed. Complementation studies showed that the FANCG gene from the Fanconi Anaemia/BRCA (FA/BRCA) DNA repair pathway was impaired, indicating that the variant in FANCG contributes to the cellular phenotype. The patient’s chromosome instability represents the first report where heterozygous variant(s) in the FA/BRCA pathway are implicated in the cellular phenotype. We propose that a multigenic contribution of heterozygous variants in HDAC8 and the FA/BRCA pathway might have a role in the phenotype of this neurodevelopmental disorder. The importance of these findings may have repercussion in the clinical management of other cases with a similar synergic contribution of heterozygous variants, allowing the establishment of new genotype–phenotype correlations and motivating the biochemical study of the underlying mechanisms.

Hybrid cardiac telerehabilitation program as a potential strengthening factor in the quality of life in patients with coronary heart disease: a retrospective single-centre analysis

 

Cardiac rehabilitation (CR) has well known beneficial effects on physical capacity, health-related quality of life, morbidity and mortality in patients with coronary artery disease (CAD). However, underuse of CR and not sustained improvements have been noted. It has been proposed that telemonitored exercise-based CR, by the use of mobile applications, can improve patient adherence to CR programs providing better outcomes.

The aim of this study was to investigate the effects of telemonitored cardiac rehabilitation on physical capacity, health-related quality of life and control of cardiovascular risk factors among patients with CAD on phase 2 of the Cardiac Rehabilitation Program (CRP).

A retrospective study was conducted and patients in CRP between 2017 and 2020 were included. Patient selection and information collection were obtained through medical records. Outcomes were Body Mass Index, Hospital Anxiety and Depression Scale (HADS), EuroQol-5D score (EQ-5D), International Physical Activity Questionnaire (IPAQ), estimated functional capacity in cardiac stress test, lipid panel and glycated hemoglobin. Patients were divided into two groups: group 1 followed the conventional strategy and group 2 followed a hybrid telemonitored CRP, with the use of MOVIDA mobile application. Variables were analysed in the beginning (T0) and in the end (T1) of the phase 2, around 3 months after. Group comparisons tests and multivariate logistic regression were performed. A p-value less than 0.05 is statistically significant. Statistical analysis was performed using SPSS software v25.0.

We analysed 107 patients, which 93 of these were assiduous and 69 concluded the phase 2 of CRP: 44 patients in group 1 and 25 patients in group 2. Two groups have similar baseline characteristics, except for age (p=0.02). It appears that participation in the PRC led to an improvement in physical capacity, mental well-being, and in lipid panel, regardless of the strategy. The improvement in quality of life, quantified by EQ-5D, was significant only in group 2 (p=0.03). There is also no correlation between age and the differences recorded in EQ-5D (p=0.86).

We hypothesise that, when compared to conventional CRP, cardiac telemonitored exercise using modern communication methods and on-demand coaching will result in an improved behavioural change, which translates to higher quality of life. Further studies including more patients and the phase 3 of CRP are needed to confirm these results.

Funding Acknowledgement

Type of funding sources: None.

Predictors of patient and system delay for primary percutaneous coronary intervention

Background

The delay times of the patient and the system for primary percutaneous coronary intervention (p-PCI) have a determining impact on the prognosis of patients with acute myocardial infarction with ST segment elevation (STEMI).

Purpose

To identify the predictors of patient and system delay for p-PCI in the period of 2020 at a reference hospital for p-PCI.

Methods

Patients submitted to p-PCI in the period from March to September 2020 were included and compared with the same period in 2019. We analyzed the differences between the two groups regarding the patient's delay times, time from the onset of symptoms to the first medical contact (FCM) and the system (time from the first contact with the health system to p-ICP). Data collection of the patient's previous history, coronary intervention performed and post-PCI follow-up was performed using the electronic patient record. Univariate analysis and logistic regression models from multivariate analysis were used to determine the predictors of “patient delay” and “system delay” and adjusted for confounding factors. The analysis was performed with a significance level of 5%.

Results

We included in the study 255 patients who underwent p-PCI, of which 122 in the period from 2020 and 133 in the period from 2019. Regarding the characteristics of the population, there were no significant differences between the two periods. Regarding the patient's delay time, there were no statistically significant differences. The variable first medical contact with a non p-PCI center was the only variable associated with system delay>90 minutes in the multivariate analysis, OR (6.18: 95% CI, 1.91–20), p=0.002. There was a statistically significant association between the period of 2020 (pandemic period) and total ischemia time, but with a negative effect, dependent variable adjusted for confounding factors [adjusted OR: −0.10; 95% CI: −107.61 to −5.57; p=0.03].

Conclusion

In this study, the patient's admission to a non p-PCI centers was identified as the only predictor of longer delay until p-PCI (system delay). However, these results should serve as a contribution to decision making in order to mitigate risks, regardless of any associated catastrophe and eventually alert the population not to neglect the symptoms suspected of acute myocardial infarction.

Funding Acknowledgement

Type of funding sources: None.

Monitoring response to conventional treatment in children with XLH: Value of ALP and Rickets Severity Score (RSS) in a real world setting

INTRODUCTION

X-linked hypophosphataemia (XLH) is conventionally managed with oral phosphate and active vitamin D analogues.

OBJECTIVES

To evaluate long term treatment response by assessing biochemical disease activity [serum alkaline phosphatase (ALP)], radiological rickets severity score (RSS), growth and morbidity in patients with XLH on conventional therapy and assess the correlation between serum ALP and RSS.

METHODS

XLH patients from 3 UK tertiary centres with ≥3 radiographs one year apart were included. Data was collected retrospectively. The RSS was assessed from routine hand and knee radiographs and ALP z scores were calculated using age-specific reference data.

RESULTS

Thirty-eight (male = 12) patients met the inclusion criteria. The mean ± SD knee, wrist and total RSS at baseline (median age 1.2 years) were 2.0 ± 1.2, 1.9 ± 1.2 and 3.6 ± 1.3 respectively; and at the most recent clinic visit (median age 9.0 years, range 3.3-18.9) were 1.6 ± 1.0, 1.0 ± 1.0 and 2.5 ± 1.5 respectively. The mean ± SD serum ALP z scores at baseline and the most recent visit were 4.2 ± 2.3 and 4.0 ± 3.3. Median height SDS at baseline and most recent visit were -1.2 and -2.1 (p = 0.05). Dental abscess, craniosynostosis, limb deformity requiring orthopaedic intervention and nephrocalcinosis were present in 31.5%, 7.9%, 31.6% and 42.1% of the cohort respectively. There was no statistically significant (p > 0.05) correlation between ALP z scores and knee (r = 0.07) or total (r = 0.12) RSS.

CONCLUSIONS

Conventional therapy was not effective in significantly improving biochemical and radiological features of disease. The lack of association between serum ALP and rickets severity on radiographs limits the value of ALP as the sole indicator of rickets activity in patients receiving conventional therapy.

Elucidation of fecal inputs into the River Tagus catchment (Portugal) using source-specific mitochondrial DNA, HAdV, and phage markers

Determining the source of fecal contamination in a water body is important for the application of appropriate remediation measures. However, it has been suggested in the extant literature that this can best be achieved using a 'toolbox' of molecular- and culture-based methods. In response, this study deployed three indicators (Escherichia coli (EC), intestinal enterococci (IE) and somatic coliphages (SC)), one culture-dependent human marker (Bacteroides (GB-124) bacteriophage) and five culture-independent markers (human adenovirus (HAdV), human (HMMit), cattle (CWMit), pig (PGMit) and poultry (PLMit) mitochondrial DNA markers (mtDNA)) within the River Tagus catchment (n = 105). Water samples were collected monthly over a 13-month sampling campaign at four sites (impacted by significant specific human and non-human inputs and influenced by differing degrees of marine and freshwater mixing) to determine the dominant fecal inputs and assess geographical, temporal, and meteorological (precipitation, UV, temperature) fluctuations. Our results revealed that all sampling sites were not only highly impacted by fecal contamination but that this contamination originated from human and from a range of agricultural animal sources. HMMit was present in a higher percentage (83%) and concentration (4.20 log GC/100 mL) than HAdV (32%, 2.23 log GC/100 mL) and GB-124 bacteriophage with the latter being detected once. Animal mtDNA markers were detected, with CWMit found in 73% of samples with mean concentration of 3.74 log GC/100 mL. Correlation was found between concentrations of fecal indicators (EC, IE and SC), CWMit and season. Levels of CWMit were found to be related to physico-chemical parameters, such as temperature and UV radiation, possibly as a result of the increasing presence of livestock outside in warmer months. This study provides the first evaluation of such a source-associated 'toolbox' for monitoring surface water in Portugal, and the conclusions may inform future implementation of surveillance and remediation strategies for improving water quality.

Radiographers' individual perspectives on sonography - A survey of European Federation of Radiographer Societies (EFRS)

INTRODUCTION

Radiographers can elect to work within many different modalities, one being ultrasound. Within Europe there are differing opinions about how much of a role radiographers should take in relation to the ultrasound examination, particularly report writing. This paper provides findings exploring the radiographer's views on working within sonography.

METHODS

In 2019 an electronic survey was disseminated to radiographer members by European Federation of Radiographer Societies (EFRS) national radiographer societies, following a pilot study. A mix of closed questions, free text, and scale responses aimed to investigate radiographers' practice, legal responsibilities, report writing, educational level and experiences of support and mentoring.

RESULTS

Of 561 radiographers participating, most (92%) reported performing ultrasound scans. Challenges with legislation, medical protectionism and lack of high-quality education restricted other radiographers. On average, the respondents have practiced ultrasound for 13.5 years. A total of 60% had postgraduate education and carried out a wide range of examinations. A full interpretative report, including advice on further investigations is performed by 52%, whilst 22% provide a checklist or descriptive report. Over 55% of radiographers took legal responsibility for the examination and the majority had clear protocols, good mentoring and support in the workplace. Peer review of their work was less common.

CONCLUSION

The result shows that in 21 (n = 25) countries radiographers perform ultrasound, however not without challenges. Educational levels range from no formal education or short courses to an MSc in ultrasound. Report writing practice differs across the EFRS countries responding to the survey, as does peer review to enhance skills and clinical practice.

IMPLICATIONS FOR PRACTICE

National Radiographer societies could review findings to support campaigning for a change in legislation and improvements to educational offerings in ultrasound.

Evaluation of the Potential of Marine Algae Extracts as a Source of Functional Ingredients Using Zebrafish as Animal Model for Aquaculture

Research on immunotherapeutic agents has become a focus for the treatment of fish diseases. The ability of algae to produce secondary metabolites of potential interest as immunotherapeutics has been documented. The present research intended to assess antiviral and antibacterial activities of macro- and microalgae extracts against viral and bacterial pathogens and explore their immunomodulatory potential using zebrafish (Danio rerio) larvae as a model organism. The cytotoxicity and antiviral activity of eight methanolic and ethanolic extracts from two macroalgae (Fucus vesiculosus, Ulva rigida) and two microalgae (Nannochloropsis gaditana, Chlorella sp.) were analyzed in established fish cell lines. Six extracts were selected to evaluate antibacterial activity by disk diffusion and growth inhibition assays. The three most promising extracts were characterized in terms of fatty acid composition, incorporated at 1% into a plant-based diet, and evaluated their effect on zebrafish immune response and intestinal morphology in a short-term feeding trial. All extracts exhibited in vitro antiviral activity against viral hemorrhagic septicemia and/or infectious pancreatic necrosis viruses. Methanolic extracts from F. vesiculosus and U. rigida were richer in saturated fatty acids and exhibited in vitro antibacterial action against several bacteria. Most promising results were obtained in vivo with F. vesiculosus methanol extract, which exerted an anti-inflammatory action when incorporated alone into diets and induced pro-inflammatory cytokine expression, when combined with the other extracts. Moreover, dietary inclusion of the extracts improved intestinal morphology. In summary, the results obtained in this study support the potential of algae as natural sources of bioactive compounds for the aquaculture industry.

Development and validation in 500 female samples of a TP-PCR assay to identify AFF2 GCC expansions

Over 100 X-linked intellectual disability genes have been identified, with triplet repeat expansions at the FMR1 (FRAXA) and AFF2 (FRAXE) genes being the causative agent in two of them. The absence of FRAXE pathognomonic features hampers early recognition, delaying testing and molecular confirmation. Hence, our laboratory uses a multiplex PCR-based strategy to genotype both FRAXA and FRAXE. However, AFF2 expansions are missed giving rise to an uninformative result in around 20% of female samples. To rule out undetected expansions and confirm homozygosity Southern blot analysis is performed being labour- and resource-intensive. The aim of this study is to develop a timely and economic triplet-primed amplification (TP-PCR) screening strategy to size the AFF2 GCC repeat and accurately assess homozygosity as well as pinpoint multiplex-PCR false negatives in female samples. In order to achieve this, validation was performed in a cohort of 500 females with a previous uninformative FRAXE PCR result. Interestingly, the presence of a T > C SNP (rs868949662), contiguous to the GCC repetitive tract, allows triplet primer binding in two additional repeats, increasing the discrimination power of the TP-PCR assay in heterozygous and homozygous samples. Twelve alleles outside the normal range were recognized: eight intermediate and four premutated, which seems relevant considering the rarity of the AFF2 expansions. All genotypes are concordant with that obtained by Southern blotting, confirming this as a strict, reproducible and low-cost homozygosity screening strategy that enables the identification of small expanded alleles missed by the routine multiplex-PCR due to allele dropout. Overall, this assay is capable of spotting multiplex-PCR false negatives besides identifying alleles up to > 80 GCC repeats. Furthermore, the occurrence of intermediate repeat sizes with unexpected frequency, introduces new areas of clinical research in this cohort in understanding these less explored AFF2 repeat sizes and newly associated phenotypes.

Rapid atrial fibrillation increases cardiac biomarkers: decision to perform coronary angiography based on novel high-sensitivity Troponin I peak

Funding Acknowledgements

Type of funding sources: None.

Background

Since January 2018 the availability of high sensitivity Troponin I (hsTnI) has improved ischemia diagnosis. In patients with rapid atrial fibrillation (AF), the decision to undergo coronary angiography is usually due to elevated cardiac biomarkers. However, evidence to support the rentability of this approach is sparse.

Purpose

Evaluate if hsTnI in patients with rapid AF and elevated cardiac biomarkers has a good discriminative power to predict a positive coronary angiography.

Methods

We retrospectively studied consecutive patients admitted to the emergency department (ED) between January 2018 and December 2019 with rapid AF that underwent coronary angiography and had multiple hsTnI values obtained. We analysed risk factors, initial and peak hsTnI, time from ED admission to peak hsTnI and ST-T segment abnormalities (ST depression and/or T wave inversion). We evaluated the presence of significant coronary artery stenosis with the need of revascularization at coronary angiography. Univariable and multivariable analysis was performed to obtain the Odds Ratio (OR, 95% CI, p-value) for significant coronary artery disease (CAD).

Receiver operator characteristics (ROC) curve and area under the curve (AUC) were obtained to determine the discriminative power of peak hsTnI as predictor of a positive coronary angiography. Optimal cut-point value was obtained (Youden index) and patients were divided according to this value.

Results

From 1407 patients admitted to the ED with rapid AF, 30 patients, 60% male, median age 74 (IQR 61.25-80.75) years, were submitted to coronary angiography. Significant coronary artery stenosis was present in 17 (57%) patients.

Age, ST-T segment abnormalities and peak hsTnI were predictors of significant CAD, respectively 1.203, 1.064-1.361, 0.003; 25.00, 3.522-177.477, 0.001; and 1.000, 1.000-1.001, 0.015.

Optimal cut-point value for predicting the presence of significant coronary artery stenosis at coronary angiography was a peak hsTnI of 359 pg/mL (AUC 0.869, p-value 0.001, 95% CI 0.742-0.995). The two groups with hsTnI < 359 and hsTnI >359 differed in age and ST-T segment abnormalities (see Table).

After adjustment, peak hsTnI >359 pg/mL was the only independent predictor of significant CAD (23.894, 1.310-435.669, 0.032).

Conclusion

In this group of patients with rapid AF, peak hsTnI >359 pg/mL was the only independent predictor of significant coronary artery disease. Therefore, those patients should undergo coronary angiography. Abstract Figure.

Should we redifine Hypertensive response in stress test to better predict cardiovascular risk?

Funding Acknowledgements

Type of funding sources: None.

Introduction

Systolic blood pressure (SBP) rise during exercise is normal, but some patients present with hypertensive response to exercise (HRE). The clinical implication of such phenomenon is not fully elucidated, and treatment strategies are still uncertain.

Purpose

To evaluate the relationship between HRE and the development of major cardiovascular events (MACE) - death, acute coronary syndrome (ACS) and stroke.

Methods

Single-center retrospective study of consecutive patients submitted to exercise test (ET) from 2012 to 2015. Patient’s demographics, baseline clinical characteristics, vital signs during ET and MACE occurrence during follow-up were analysed. HRE was defined as a peak systolic blood pressure (PSBP) >210 mmHg in men and >190 mmHg in women, or a rise of the SBP of 60 mmHg in men or 50 mmHg in women or as a diastolic blood pressure >90 mmHg or a rise of 10 mmHg.

Results

We included 458 patients with HRE (76% men, 57.5 ± 10.83 years). The most frequent comorbidities were hypertension (83%) and dyslipidaemia (61%). During a mean follow-up of 60 ± 2 months, the incidence of MACE was 9.2% with ACS being the most frequent (4.2%), followed by mortality (3.8%) and stroke (2.1%). Patients with inconclusive ET had a fourfold higher risk of acute coronary events (OR 4.1, CI 95% 1.55-11.14, p = 0.005). Baseline SBP and PSBP were predictors of MACE occurrence (OR 1.022, CI 95% 1.004-1.04, p = 0.016, OR 1.031 CI 95% 1.012-1.051, p = 0.001, respectively) and were both associated with cardiovascular hospitalization (p = 0.006; p < 0.001, respectively). PSBP had moderate ability to predict hospitalization of cardiovascular (CV) cause (AUC 0.71, p < 0.001) with a cut-off of 193 mmHg (sensibility 91%, specify 40%) and had moderate ability to predict MACE (AUC 0.67, p < 0.001) with a cut-off of 198 mmHg (sensibility 78.6%, specify 46.1%). Regarding mortality, antihypertensive therapy prior to ET was protective (p = 0.042), with no difference between different classes of drugs.

Conclusion

Our data reveal a high rate of MACE occurrence between patients with HRE. The finding of diagnosed hypertension as a protective factor of stroke may be explained by the cardioprotective effect of antihypertensive drugs. An increased risk of ACS between patients with an inconclusive ET should lead to consider then for further investigation. HRE should be considered as part of CV risk assessment and adjusted lower HRE cut-off values should be considered in order to better predict MACE occurrence, particularly in high risk patients.

Abstract Figure.

Hybrid cardiac rehabilitation program as a potential enhancer of adherence to cardiac rehabilitation in smoking patients with coronary heart disease - a retrospective single-centre analysis

Funding Acknowledgements

Type of funding sources: None.

Cardiac rehabilitation (CR) has well known beneficial effects on physical capacity, health-related quality of life, morbidity and mortality following an acute cardiac event. It is also known that smoking status is a powerful predictor of recurrent cardiovascular disease events. However, it has been noted that smoker patients may be less likely to access or complete CR.

The aim of this study was to determine the levels of anxiety and depression and its improvement, depending on the smoking status of patients with coronary artery disease (CAD) on phase 2 of the Cardiac Rehabilitation Program (CRP). Additionally, we intend to investigate the mental health impact on smoker patients" group in conventional CR versus telemonitored CR.

A retrospective study was conducted and patients in CRP between 2017 and 2020 were included. Patient selection and information collection were obtained through medical records. The outcomes of anxiety and depression were evaluated through the Hospital Anxiety and Depression Scale (HADS). Patients were divided into two groups: group 1 for non-smokers or ex-smokers and group 2 for smokers. For group 2 patients, a sub-analysis was performed for patients following the conventional CR versus the telemonitored CR, with the use of MOVIDA mobile application. Variables were analysed in the beginning (T0) and in the end (T1) of phase 2, around 3 months after. Group comparisons tests and statistical analysis were performed using SPSS software v25.0. A p-value less than 0.05 is statistically significant. 

We analysed 107 patients, which 93 of these were assiduous and 69 concluded the phase 2 of CRP: 39 patients in group 1 and 30 patients in group 2. Two groups have similar baseline characteristics, except for the higher presence of diabetes (p = 0.02) in group 1. It was noted an improvement in both anxiety and depression items for group 1 (p < 0.01 for both), but only for anxiety item for group 2 (p = 0.03). In subgroup analysis, we observed no improvement for smoking patients following the conventional CR for both anxiety and depression items (p = 0.60 and p = 0.71, respectably) versus a significant difference in telemonitored CR patients (p = 0.02 and p = 0.04).

We hypothesise that, when compared to conventional CR, cardiac telemonitored exercise using modern communication methods may result in an improved mental health state among smoking patients, which can lead to a better adherence for CRP. Further studies including more patients and phase 3 of CRP are needed to confirm these results.

Mitral valve prolapse: American versus European guidelines - which one is better

Funding Acknowledgements

Type of funding sources: None.

Introduction

According to the most recent recommendations of AHA, mitral valve prolapse (MVP) is defined as systolic displacement of the mitral leaflet into the left atrium (LA) of at least 2 mm from the mitral annular plane. The ESC recommendations define MVP, flail and billowing, according to the location of the leaflet tips in relation to the coaptation plan. Differences in outcomes considering these classifications are not established.

Purpose

To evaluate the differences in clinical presentation and outcomes of MVP considering AHA and ESC classifications.

Methods

Single-center retrospective study of consecutive patients with MVP (defined according to the AHA classification) documented in transthoracic echocardiogram between January 2014 and October 2019. Demographic, clinical, echocardiographic and electrocardiographic data were collected. The results were obtained using Chi-square and ANOVA tests.

Results

We included 247 patients (mean age 62.9 ± 18 years, 61% males) according to AHA classification; considering the ESC classification: 147 (59%) had prolapse, 30 (12%) flail and 67 (39%) billowing.

In comparison to patients with flail and billowing, patients with MVP had less cordae rupture (p = 0.02). Prolapse was associated with better survival (p = 0.037) and was an independent predictor of survival (OR = 0.372, CI95% [0.148-0.935], p = 0.035) Patients with flail were older in comparison to the ones with prolapse and billowing (71 ± 14 vs 63 ± 17 vs 60 ± 21 years, respectively, p = 0.022). Patients with flail were mostly men (80%, p = 0.028), with more significant mitral regurgitation (p = 0.003) and higher NYHA class (p = 0.018). They also had higher systolic pulmonary artery pressure (SPAP) (48 ± 23 vs 38 ± 18 vs 36 ± 12mmHg, p = 0.015) and higher values of LV mass and posterior wall thickness (144 ±32 vs 125 ± 44 vs 114 ± 37g/m2, p = 0.005 and 11 ± 1,5 vs 10 ± 1,7 vs 9 ± 1.9 mm, p = 0.009, respectively). Women had more billowing (p = 0.04) than prolapse and flail.

Conclusion

The ESC classification adds information to the AHA classification in what concerns to clinical presentation and prognosis of mitral valve prolapse, so both classifications should be used in daily practice.

Best approach in d-dimer algorithm to exclude pulmonary thromboembolism: a comparative study

Funding Acknowledgements

Type of funding sources: None.

Background

 Ruling out pulmonary embolism (PE) through a combination of clinical assessment and Ddimer is crucial to avoid excessive computed tomography pulmonary angiography (CTPA), and different algorithms should be considered as an alternative to the fixed cutoff to achieve that goal.

Purpose

 To compare sensitivity, specificity, and reduction in CTPA requests of 4 algorithms to rule out PE: fixed Ddimer cutoff, age-adjusted, YEARS and PEGeD.

Methods

 Retrospective study of consecutive outpatients who presented to the emergency department and underwent CTPA for PE suspicion from April 2019 to February 2020. The clinical-decision algorithms were retrospectively applied. 

In fixed and age-adjusted cutoffs, high probability patients are directly selected for CTPA and the others perform CTPA if Ddimer ≥500µg/L or age x10 µg/L within patients over 50 years, respectively. YEARS includes 3 items (signs of deep vein thrombosis, haemoptysis and whether PE is the most likely diagnosis): patients without any YEARS items and Ddimer ≥1000ng/mL or with ≥1 items and Ddimer 500ng/mL perform CTPA. In the PEGeD, patients with high clinical probability or with intermediate and Ddimers >500µg/L or low probability and Ddimer >1000 µg/L are selected for CTPA.

Results

We enrolled 409 patients and PE was confirmed by CTPA in 125 patients. Compared with a fixed Ddimer cutoff, age-adjusted was associated with a significant increased of specificity (p < 0.001), correctly avoiding 29 CTPAs, without losing sensitivity. YEARS resulted in a marked increase in specificity, compared to the fixed cutoff, but with an impairment of sensitivity(p = 0.002). PEGeD had the worst sensitivity, associated with 11 more false negatives (FN) than the fixed cutoff. Despite the lack of difference between PEGed and YEARS strategies regarding sensitivity, YEARS had a significantly higher specificity (p < 0.001) and allowed to correctly avoid a higher number of CTPA(55 vs 63), compared to the fixed cutoff. Results are summarized in table 1.

Conclusion

 Compared to fixed d-dimer cutoff, all algorithms were associated with an increased specificity. Age-adjusted cutoff was the only that is not associated with a significant decrease in sensitivity when compared to fixed cutoff, allowing to safely reduce the need to perform CTPA.

Sens(%) Spec(%) Correctly avoid CTPAs(n) FN(n) Fixed cutoff 95 29 85 6 Age-adjusted 93 40 114 9 YEARS 87 52 148 16 PEGeD 86 49 140 17

Mitral valve prolapse - it"s possible to stratify prognosis in these patients?

Funding Acknowledgements

Type of funding sources: None.

Introduction

Mitral valve prolapse (MVP) is one of the most frequent causes of mitral valve disease in developed countries, traditionally with a benign prognosis, however some patients develop arrythmias and significant mitral regurgitation (MR) with need of intervention. Herein our purpose was to establish clinical, electrocardiographic and echocardiographic predictors of arrythmias, mitral valve intervention (MVI) and hospitalization in MVP patients to better characterize the prognosis in these patients.

Methods

 Single-center retrospective study of consecutive patients with MVP documented in transthoracic echocardiogram between January 2014 and October 2019. MVP was defined as systolic displacement of the mitral leaflet into the left atrium ≥ 2 mm from the mitral annular plane. Demographic, clinical, echocardiographic, electrocardiographic data were collected as well as adverse events at follow-up. The results were obtained using Chi-square and Student-t tests; predictors were found with logistic regression.

Results

 247 patients were included (mean age 62.9 ± 18 years, 61% males), most with MVP involving the posterior leaflet (48.6%). 40% were symptomatic, 47.4% had more than moderate MR, and 25% had interventricular conduction delay in the ECG. During a mean follow-up of 30 ± 19 months, 38% had arrythmias, 27.1% needed mitral valve intervention (95% surgery and 5% percutaneous), 27.1% had atrial fibrillation (AF), 3.4% had ventricular arrythmias, 19.2% had ventricular premature beats, 13.3% had hospital admission for cardiovascular cause and 8.5% (n = 21) died. 9.3% of the patients had mitral annulus disjunction (MAD).

Palpitations (p = 0.018), AF (p < 0.001), significant MR (p < 0.001), higher NYHA class (p = 0.016), systolic pulmonary artery pressure (SPAP) (p < 0.001), LV mass (p < 0.001), QTc (p = 0.01) and MAD maximum distance (p = 0.02) associated with MVI.

MAD maximum distance value presented an excellent capacity to predict the MVI (AUC 0.85 p = 0.019); the best cut-off was 11,5 mm (Sens = 80%; Spec = 83%).

AF was a predictor of hospitalization in univariate analysis (OR = 2.57, CI95% 1.15-5.75, p = 0.022).

Regarding arrhythmic events, we found association with aortic root dilatation (p = 0.032), NYHA III-IV (p = 0.013), age and LV mass (both with p < 0.001).

In multivariate analysis, LV mass (OR = 1.02, CI95% 1.005-1.027, p = 0.005) and age (OR = 1.038, CI95% 1.004-1.053, p = 0.021) were independent predictors of arrythmias.

In this sample, MAD was not associated with arrythmias.

Conclusion

 Opposing to previous studies in our population, MAD was not associated with arrythmias but had an excellent capacity to predict MVI. Age and LV hypertrophy were independent predictors of arrythmias in our patients. Larger studies are needed to better stratify patients with MVP, as its association with arrhythmias, hospitalization and the need for intervention is not negligible.

Mitral annulus disjunction: is it a marker of ominous prognosis?

Funding Acknowledgements

Type of funding sources: None.

Introduction

Mitral annulus disjunction (MAD) has been proposed as a contributing factor for arrythmias and mitral regurgitation in patients with mitral valve prolapse (MVP), however its clinical relevance is still under investigation.

Objective

To evaluate the frequency of MAD in MVP patients, to characterize clinically patients with MAD and assess potential markers for events.

Methods

Single-center retrospective study of consecutive patients with MVP documented in transthoracic echocardiogram between January 2014 and October 2019. MVP was defined according to the 2017 AHA recommendations; MAD was defined as a separation between mitral valve annulus and the left ventricle free wall. Demographic, clinical, echocardiographic, electrocardiographic data were collected. The results were obtained using Chi-square and Mann-Whitney tests; logistic regression was used to find predictors of events.

Results

247 patients were included (mean age 62.9 ± 18 years, 61% males), of these 23 (9.3%) had MAD (mean age 56 ± 20 years, 56.5% males). The maximum diameter of MAD was 10 ± 3mm (range 5-18). 21 patients (92.3%) had mitral regurgitation, and it was at least of moderate severity in 65.2% of patients. Most of the patients (91.3, n = 21) were in sinus rhythm (SR).

During follow-up (FUP) of 29 ± 19 months, 39% (n = 9) of the patients developed symptoms, 22% (n = 5) had atrial fibrillation (AF), 4.3% (n = 1) had acute aortic syndrome (AAS), 4.3% (n = 1) needed ICD, 22% (n = 5) were submitted to mitral valve intervention, 8.7% (n = 2) were admitted to hospital and 8.7% (n = 2) died. None of the patients presented sustained ventricular arrhythmias (SVA) as assessed in regular Holter monitoring.

These patients had more AAS and needed more ICD in FUP compared to patients without MAD (p = 0.007 and p = 0.006, respectively)

Mitral cord rupture (p = 0.04), age (p = 0.044), maximum velocity of tricuspid regurgitation (p = 0.04) and IVS thickness (p = 0.017) were associated with AF in MAD patients. in univariate analysis, interventricular septum thickness was a predictor of AF in this subgroup (OR 4.0, 95%CI 1.1-14.3, p = 0-032) The presence of SR was associated with survival (p = 0.03). There were no predictors of hospital admission or mitral intervention.

Conclusion

Patients with MAD had a relatively benign prognosis with few events during follow-up, although with more AAS and ICD in FUP. In our sample, AF was more common than SVA. Left ventricle hypertrophy was a predictor of AF and sinus rhythm was associated with survival. Larger studies with more patients and other methods of imaging are needed to confirm our results.

Diagnostic value of serological biomarkers for detection of non-alcoholic fatty liver disease (NAFLD) and/or advanced liver fibrosis in people living with HIV

OBJECTIVES

We aimed to evaluate the accuracy of serological biomarkers for non-alcoholic fatty liver disease (NAFLD) and advanced fibrosis (METAVIR-F3F4) in HIV mono-infected individuals.

METHODS

In all, 674 participants from the PROSPEC-HIV study (NCT02542020), who had blood sample tests and transient elastography (TE) performed on the same day, were eligible. Exclusion criteria were viral hepatitis co-infection (n = 90), abusive alcohol intake (n = 61), missing data (n = 47) or unreliable TE (n = 39). NAFLD was defined by controlled attenuation parameter ≥ 248 dB/m and advanced fibrosis by liver stiffness measurement ≥ 8.7 kPa with M probe or ≥ 7.2 kPa with XL probe. Biomarkers for NAFLD [Steato-ELSA, Fatty Liver Index (FLI), Hepatic Steatosis Index (HSI), NAFLD-Liver Fat Score (NAFLD-LFS)] and fibrosis [Fibrosis-4 score (FIB-4), Aspartate-to-Platelet Ratio Index (APRI) and NAFLD Fibrosis Score (NFS)] were calculated.

RESULTS

A total of 437 patients [57% female, age = 44 (interquartile range: 35-52) years, body mass index (BMI) = 26.1 (23.4-29.3) kg/m² , CD4 = 660 (427-901) cells/μL] were included. The prevalence [95% confidence interval (CI)] of NAFLD and advanced fibrosis were 38.2% (33.8-42.9) and 10.5% (8.0-13.8), respectively. The areas (95% CI) under the receiver operator curve (AUROCs) for diagnosis of NAFLD were 0.854 (0.818-0.889), 0.840 (0.804-0.877), 0.805 (0.762-0.847) and 0.793 (0.750-0.836) for Steato-ELSA, FLI, HSI and NAFLD-LFS (P < 0.001), respectively. All tests yielded satisfactory sensitivities, specificities and negative predictive values (NPVs). The AUROCs (95% CI) for diagnosis of advanced fibrosis were 0.736 (0.659-0.814), 0.700 (0.614-0.7851) and 0.795 (0.726-0.864) for FIB-4, APRI and NFS (P = 0.077), respectively. These tests yielded high specificities and negative predictive values (NPVs) > 90%.

CONCLUSION

Biomarkers for NAFLD had a good accuracy and those for fibrosis had high specificities and NPVs. These tests should be integrated to HIV care to detect NAFLD and to exclude advanced liver fibrosis.

Long-term effects of elevated CO2 on the population dynamics of the seagrass Cymodocea nodosa: Evidence from volcanic seeps

Population reconstruction techniques was used to assess for the first time the population dynamics of a seagrass, Cymodocea nodosa, exposed to long-term elevated CO₂ near three volcanic seeps and compared them with reference sites away from the seeps. Under high CO₂, the density of shoots and of individuals (apical shoots), and the vertical and horizontal elongation and production rates, were higher than at the reference sites. Nitrogen limitation effects on rhizome elongation and production rates and on biomass were more evident than CO₂ as these were highest at the location where the limitation of nitrogen was highest. At the seep where the availability of CO₂ was highest and nitrogen lowest, density of shoots and individuals were highest, probably due to CO₂ effects on shoot differentiation and induced reproductive output, respectively. At the three seeps, there was higher short- and long-term shoot recruitment than at the reference sites, and growth rates was around zero, indicating that elevated CO₂ increases the turnover of C. nodosa shoots.