Workload Balancing in Emergency Night Shifts for a Multicenter Diagnostic Imaging Department: a RIS-Integrated Solution

The purpose of this short report is to illustrate the implementation of a RIS function for balancing radiological activities and workloads between two different teams of radiologists from the same Diagnostic Department during emergency nights and holiday shifts. One group is from the main hospital, Arcispedale S.Maria Nuova di Reggio Emilia, and the other group belongs to the five minor hospitals in the district of Reggio Emilia.The implementation of a dedicated balancing function in the RIS system successfully allows the balancing of the radiological activity between two or more teams of different radiologists, while preserving the care continuity of care and the involved workers' experience and confidence in reporting.

P175 ELECTROCARDIOGRAPHIC ELEMENTS ASSOCIATED WITH ARRHYTHMIC RISK IN BRUGADA SYNDROME

Introduction

Brugada syndrome is an inherited disease characterized by an increased arrhythmic risk and sudden death. The type 1 ECG pattern is the only standard required to make a diagnosis but the stratification of arrhythmic risk remains a controversial element. Some electrocardiographic signs have been described as associated with an increased arrhythmic risk. We present a case of Brugada Syndrome in which different electrocardiographic elements of incremental risk could have predicted the later evolution of the clinical case.

Clinical Case

A 68–year–old male patient with family history of sudden cardiac death (brother 51aa) and occasional finding of Brugada type 1 ECG pattern (2009), implanted with Medtronic bicameral ICD device in primary prevention. The electrocardiogram shows type 1 Brugada pattern in the right precordials with characteristic ST–elevation, followed by a concave ST segment, one of the signs of association with an increased arrhythmic risk; first–degree AV block with a long PR (323 msec) associated with the presence of the SCN5A mutation and an increased risk of arrhythmic events and sudden cardiac death; in the end a fragmented QRS in V2 with extended duration (153 ms). At the next follow–up the patient had some episodes of arrhythmic storm, effectively treated by the device; in consideration of the arrhythmic burden, he was subjected to epicardial ablation and was also subjected to genetic analysis that was positive for pathological mutation on the SCN5A gene (SCN5A ex 22: c.3929C>T;p.Pro1310Leu).

Conclusions

Brugada Syndrome can be diagnosed from the type 1 ECG pattern, but the current risk stratification score remains a controversial element. Electrocardiographic signs of malignancy can contribute to create a multiparametric evaluation of the patient in order to predict future arrhythmic events. Fig 1. ECG: RS 74 bpm, first–degree AV block (PR 323 msec), BFA, Brugada type 1 pattern (QRS 153 ms), fragmented QRS in V2. Fig. 2 Family tree.

P411 MINOCA OR NOT MINOCA? THE DECISIVE ROLE OF CARDIAC MAGNETIC RESONANCE IN THE DIFFERENTIAL DIAGNOSIS OF MYOCARDIAL DAMAGE

Cardiac MRI can facilitate the differential diagnosis of myocardial damage in patients without coronary artery disease. Our case report is about a 50–year–old man who was admitted to the Emergency Department of the Maggiore Hospital in Bologna in October 2021 for oppressive chest pain at rest; previously he had experienced a similar episode but of minor intensity. He had not previous medical records. When the patient arrived at the emergency department chest pain had regressed, blood pressure was elevated (170/110 mmHg). The ECG showed sinus tachycardia at 100 bpm without electrocardiographic abnormalities suggestive of acute ischemia. Cardiac biomarkers were elevated (hsTnI 312 ng / L –> 975 ng / L – n.v. <19.8 ng / L); blood gas analysis showed pH 7.42, pO2 47 mmHg and pCO2 33 mmHg. Chest CT scan excluded pulmonary embolism and acute aortic syndrome. The patient was transferred to Cardiology Ward in the suspicion of acute coronary syndrome, where echocardiogram showed normal biventricular volumes, mild wall hypertrophy and hypokinesia of the lower middle wall (EF 52%). Coronary angiography didn’t showed any obstructive stenosis in any epicardial vessels. In consideration of the clinical presentation and instrumental evidences, the patient was discharged with a diagnosis of myocardial infarction with non–obstructive coronary arteries (MINOCA), but a cardiac MRI was scheduled in the post–discharge to clarify its genesis. MRI didn’t showed any areas of signal hyperintensity, any perfusion deficits in the first pass study and any areas of late gadolinium enhancement (LGE). Those images permitted to exclude areas of necrosis or inflammation, orienting the diagnosis to myocardial damage during hypertensive crisis. Therefore, the antiplatelet therapy recommended at discharge was suspended. In this case report, cardiac magnetic resonance showed that it can improve the etiological diagnosis of MINOCA, allowing for better clinical and therapeutic management.

P193 MECHANICAL COMPRESSION DEVICE (LUCAS®) IN THE CATHETERIZATION LABORATORY: RETROSPECTIVE ANALYSIS OF A SINGLE CENTER

Background

The survival of IHCA and OHCA depends on the timeliness and the quality of cardiopulmonary resuscitation (CPR). During transport, in the Cath Lab or when resuscitation is extended, the availability of chest compression systems increases the quality of CPR and it is recommended in these specific situations by the AHA 2020 Guidelines.

Methods

Retrospective analysis of patients who encountered cardiocirculatory arrest (CCA) in the Cath Lab or in ICU of the Maggiore Hospital managed with CPR and application of a chest compression device (LUCAS® 3) from 2020 to 2021.

Results

The study population consisted of 21 patients, all undergoing invasive procedure (coronary angiography, angioplasty or aortic valvuloplasty) in peri–arrest: 17 patients (81%) with CCA during STEMI, 3 (14%) during NSTEMI and one patient during acute pulmonary edema caused by severe aortic stenosis. In 6 cases (29%) the onset rhythm of CCA was shockable, the others were pulseless electrical activities. Considering patients admitted with STEMI, 4 (24%) have OHCA and LUCAS® had been applied by 118 operators before entering the Cath Lab. In the other cases LUCAS® was placed in the Cath Lab, before or during the procedure; in all but two cases, the procedure was concluded. The resuscitation maneuvers involved, in addition to LUCAS®, the use of an external defibrillator, orotracheal intubation, administration of inotropes and, in 2 cases (10%) the intra–aortic balloon pump (IABP). The average time between CCA and application of LUCAS® was 14 minutes – the device was always positioned after at least 2 manual ECM cycles without restoring the circulation – and the average CPR duration was 73 minutes. Any complications related to the implantation of the device were observed. The survival at the end of the procedure in the Cath Lab was 24% and on discharge 14%.

Conclusion

The use of chest compression devices during CCA allows a better management by medical personnel during long–term CPR and a completion of invasive procedure. Unfortunately, it doesn’t substantially changes the survival of patients as reported by the literature.

C52 THE BIG FOUR: RESPIRATORY FAILURE, RENAL INSUFFICIENCY, HAEMORRHAGE AND SEPSIS, HOW DO THEY IMPACT ON CICU PATIENT?

Background

The current rise in life expectancy in the general population leads to changes in baseline characteristics of Cardiac Intensive Care Unit (CICU) patients, increasing the risk of non–cardiac complications during the hospitalization.

Objectives

Evaluate epidemiology and prognostic impact of major non–cardiac complications (respiratory failure, renal insufficiency, haemorrhage and sepsis) during CICU stay. Methods: Retrospective analysis of CICU patients at Ospedale Maggiore of Bologna between March and November 2021.

Results

Baseline characteristics, cardiovascular risk factors and comorbidities of the patients are reported in Table 1. During the CICU stay, 19.7% of patients suffered from acute respiratory failure, needing for ventilation; 15.0% had renal insufficiency (considered as need for haemodialysis, glomerular filtration rate according to Cockcroft–Gault < 60 ml/min, serum creatinine rise > 25% from baseline); 1.8% reported major haemorrhages (defined as serum haemoglobin < 8 g/dl or need for blood transfusion); 1.7% developed sepsis (positive blood cultures). Mean CICU stay for complicated patients was 6 days, intra–CICU mortality was 1.7% (8 deaths) and 30–days mortality was 7.0% (32 deaths). At univariate logistic regression analysis, acute respiratory failure was the only complication associated with a statistically relevant increase in 30–days mortality (OR 2.37, CI 95%, 1.05–5.34; p = 0.038), although, also the other complications had a negative prognostic effect: haemorrhage (OR 1.58, CI 95%, 1.77–14.16; p = 0.681), renal insufficiency (OR 1.47, CI 95%, 0.56–3.87; p = 0.432) and sepsis (OR 1.25, CI 95%, 0.33–5.87, p = 0.850).

Conclusions

Epidemiology and baseline characteristics of CICU patients are changing. Older age and frailty make non–cardiac complications more likely to happen. Acute respiratory failure has the worst prognostic effect on mortality. This fact suggests that CICU Cardiologists should improve their management of these major non–cardiac complications.

P384 SUDDEN CARDIAC ARREST: LET’S LOOK BEYOND CORONAROPATHY

Introduction

Sudden cardiac arrest (SCA) is a high mortality event. Up to 70% of SCAs are caused by an acute coronary syndrome; nevertheless, it is essential to consider also non–ischemic causes while evaluating a post–SCA patient.

Clinical Case

A 68–year–old male patient with history of hypertension and dyslipidemia, presenting to the emergency room (ER) for syncope. While waiting in the ER, another sincopal episode happened and ventricular fibrillation was detected, therefore he was treated with a DC shock. At the ECG record after SCA, any acute alteration was seen. At the blood tests, an early rise of myocardial injury markers was found. At bedside echocardiography, a slight apical hypokinesia with hypertrabeculation was reported. Hence, coronarography was performed and a multivasal ateromasic coronaropathy was treated with angioplasty and drug–eluting stenting of left main artery, left anterior descending artery and left circumflex artery. In the following days, other ventricular tachyarrhythmias episodes happened and were treated with DC shocks. Due to ventricular arrhythmias relapses and echocardiographic findings, a cardiac MRI was performed, showing subepicardial fatty infiltration in the mid–apical lateral wall with parietal bulging suggesting left ventricle arrhythmogenic cardiomyopathy. So, a cardiac defibrillator was implanted in secondary prevention. Genetic analysis was run and reported a VUS mutation on RYR2 gene, still under evaluation as a possible cause for the clinical events.

Conclusions

The present clinical case shows that many causes may lead to SCA. Our patient experienced syncopal episodes related to ventricular arrhythmias and an arrhythmic storm which were most likely caused by an ischemic event on the base of an undiagnosed left ventricle arrhythmogenic cardiomyopathy.

P413 ISCHEMIC ECG CHANGES, NOT ALWAYS CORONARY ISSUES

Background

Many abdominal deseases can mimic cardiac symthoms at their presentation and they can lead to electrocardiographic (ECG) changes, acting as a confounding factor for the physichan during the diagnostic process.

Case presentation

A 77–year–old man, former smoker, with high blood pressure not being treated, came to the emergency room with mesogastric pain and vomiting, since three hours before. The ECG showed a sinus rhythm, at 55 beats per minute and a slight elevation of the ST segment in the leads DII, DIII and aVF, evolving as T waves negativization in the same leads and flattening in V5– V6. Laboratory tests showed increasing Troponin I values from 23 to 277 ng / L. Because of this pathological context, the patient was taken to our Unit to perform a coronary angiography study in the hypothesis of acute myocardial infarction. The examination showed diffuse atheromatous lesions in the coronaries without haemodynamically significant stenosis. The patient developed fever during the hospitalization, abdominal CT study with contrast was performed, with a definitive diagnosis of acute cholecystitis and the patient was finally moved to the Internal Medicine ward.

Conclusions

ECG alterations in acute cholecystitis are not specific, but some of them are recurrent: among these there are ischemic modifications affecting the ST segment or the T waves, widely described in the scientific literature. All these ECG modifications solve with the treatment of cholecystitis, whether conservative or surgical, without acting on the cardiological side in any way; on the other hand, they can lead to unnecessary diagnostic–therapeutic investigations, to a diagnosis’delay and to complications’ onset. It is important for the clinician being able to consider abdominal pathology in case of diagnostic investigations’ inconsistency. However, ST segment’s changes during cholecystitis may deserve a cardiological study, as they are specific for acute myocardial infarction, especially in patients with high cardiovascular risk. This reminds to us, once again, the importance of anamnesis, physical examination and appropriate tests, to reach the correct diagnosis.

P354 GENDER DIFFERENCES IN EPIDEMIOLOGY OF A CORONARY CARE UNIT HUB IN COVID ERA

Background

The attention about sex disparities in Cardiology has grown in the last few years. Women are still often under–represented in cardiovascular randomised clinical trials (RCTs) and several studies have shown later diagnosis, less aggressive treatments and poor prognosis among women, even though hospitalized in the coronary care unit (CCU).

Objective

To analyze gender–related differences and their relationships with prognosis among patients admitted to a contemporary CCU Hub.

Methods

Between 1st March 2021 and 30th November 2021, we prospectively collected the data of patients admitted to the II level CCU of Maggiore Hospital in Bologna.

Results

The clinical characteristics of 458 enrolled patients are shown in Table 1. Women represent 32% of the population, are older (p < 0.001) and have been admitted to the CCU mainly for acute coronary syndrome (ACS) (43%) or bradyarrhythmias (23%); men for ACS (57.5%) or heart failure (11.3%). Among patients with ACS, 82% of women underwent coronary angioplasty – both primary and non–primary– versus 88.1% of men (p = 0.276). Females have fewer cardiovascular risk factors and comorbidities than their male counterparts. In CCU, women received similar treatments to men (except for increased use of parenteral nutrition). Similarly, the prevalence of ischemic, haemorrhagic and septic complications was the same between the sexes. The rate of women‘s mortality in CCU was 1.4%, which increases to 4.8% at 30 days, similar to men’s mortality (1.9% versus 3%, respectively).

Conclusions

The study demonstrates that one third of the population of a CCU Hub is represented by women, older and more often hospitalized for ACS. These women receive the same treatments as men, including coronary revascularization. There were no differences about gender prognosis, despite a higher trend towards mortality in females after discharge from the CCU. Therefore, studies where women are more represented are needed, in order to obtain precise indications on how to modulate clinical management according to gender.

Physical characterization of a novel wireless DRX Plus 3543C using both a carbon nano tube (CNT) mobile x-ray system and a traditional x-ray system

This work aims to characterize the novel DRX Plus 3543C detector in terms of detective quantum efficiency (DQE) using both a mobile x-ray system called Carestream DRX Revolution Nano and a traditional x-ray system (Carestream DRX Evolution). We used the commercial system DRX Revolution Nano, equipped with a new x-ray source based on CNT technology and field emission (FE) as the electron emitter (cathode). An innovative aspect of this device is its intrinsic selection of the focal spot size. We tested the system using three IEC-specified beam qualities (RQA3, 5 and 7) in terms of modulation transfer function (MTF), normalized noise power spectra (NNPS) and DQE as defined in the IEC 62220-1-1:2015. We compared the results obtained using DRX Revolution Nano and DRX Evolution with correlation and with Bland-Altman plots to study their agreement. RQA3 MTF is slightly lower than the RQA5 and 7 curves between 0.5 and 2.5 cycles mm^-1. We measured MTF values of about 0.6 at 1 lp mm^-1 and about 0.28 lp mm^-1 at 2 lp mm^-1. The NNPS curves show a decreasing trend with the energy regarding the DRX Revolution Nano. On the other hand, the DRX Evolution NNPS curve at RQA3 is greater than the one at RQA5, but the one at RQA5 is less than the one at RQA7. The DQE(0) ranged between about 0.82 (DRX Evolution at RQA3) and 0.54 (DRX Evolution at RQA7). As expected, the squared Pearson's correlation coefficients between the two x-ray tubes were always in an optimal agreement, and Bland-Altman plots confirmed a substantial equivalence between the two physical characterizations of the wireless detector. In conclusion, we can show that the dynamic focal selection of the system equipped with CNT does not play a substantial role in image quality compared to a traditional system in terms of physical characterisation of the detector in our measurement conditions.