The Ross Procedure: Imaging, Outcomes and Future Directions in Aortic Valve Replacement.

The Ross procedure is gaining recognition as a significant option for aortic valve replacement (AVR), and is particularly beneficial in specific patient groups. Although categorized as a class IIb recommendation in the 2020 American College of Cardiology (ACC)/American Heart Association (AHA), and the European Society of Cardiology (ESC) management guidelines on valvular heart disease, recent studies bolster its credibility. Research, including a propensity-matched study, underlines the Ross procedure's association with enhanced long-term survival and reduced adverse valve-related events compared to other AVR types. This positions the Ross procedure as a primary option for AVR in young and middle-aged adults within specialized centers, and potentially the only choice for children and infants requiring AVR. This review meticulously examines the Ross procedure, covering historical perspectives, surgical techniques, imaging, and outcomes, including hemodynamic performance and quality of life, especially focusing on pediatric and young adult patients. It explores contemporary techniques and innovations like minimally invasive approaches and tissue engineering, underscoring ongoing research and future directions. A summarization of comparative studies and meta-analyses reiterates the Ross procedure's superior long-term outcomes, valve durability, and preservation of the left ventricular function, accentuating the crucial role of patient selection and risk stratification, and pinpointing areas for future research.

Role of three-dimensional transesophageal echocardiography in cardiac myxomas: an imaging challenge.

Nowadays, the diagnosis of cardiac myxomas (CM), particularly the histological types, remains a challenge. Two-dimensional (2D) transthoracic (TT) and transesophageal (TEE)  echocardiography (ECHO) represent the first steps in the imaging pathway. 3D ECHO,  implemented in imaging practice, appears to be an emerging diagnostic technique that overcomes some of the limitations of 2D ECHO while integrating the information provided by magnetic resonance (MRI). However, its role in the imaging arena is still debatable. Analyzing 17 myxomas in 13 patients, the study uncovers a diverse anatomical spectrum. Classical CM morphology is a minority, with most myxomas being sessile and originating from unexpected locations (right ventricular outflow tract and left atrial appendage). Texture and size variations are also noted. Comparing imaging, 2D TEE outperforms 2D TT in visualizing anatomical features, especially attachment types. 3D TEE confirms 2D TT findings and offers more detailed assessments, identifying peduncles missed in four cases by 2D TEE. Two small recurrent myxomas were exclusively detected by 3D TEE, not by 2D TEE or MRI. Two patients have papillary myxomas, one has an embolism. Another patient with a solid myxoma also suffers an embolism, with a clot found at the apex during surgery. Our study showed that CM has a wide anatomical spectrum beyond the typical features, making the diagnosis challenging. Therefore, a multimodality imaging approach is essential for distinguishing CM from other cardiac masses and differentiating myxoma histological types. These findings stress the importance of incorporating 3D ECHO alongside other imaging techniques for a comprehensive evaluation.

Thromboprophylaxis in Patients Admitted to the Surgical Ward: Clinical Audit.

Background: Hospital-acquired thrombosis (HAT) is associated with significant morbidity, mortality, and financial burden globally. Following trusted guidelines for VTE prevention has shown effective, safe, and satisfactory results. This prompts national collaborative efforts to maintain a consensus approach for the safe risk assessment of inpatients and the prescription of thromboprophylaxis. Objective: This study aimed to detect and estimate deviations from international thromboprophylaxis protocols. The study also aimed to raise the quality of practice and adherence to evidence-based protocols in Alshuhada Teaching Hospital. Methods: A cross-sectional audit of general surgical inpatients was performed from October 2021 to May 2022. The first cycle was from 1/10/2021 to 21/10/2021, and the second cycle was from 13/5/2022 to 31/5/2022. The target population was adults aged >18 years. Data were collected via an online checklist on two separate occasions. The criteria were based on the NICE guideline for venous thromboembolism in individuals aged over 16 years: "Reducing the risk of hospital-acquired deep vein thrombosis or pulmonary embolism NG89". Results: Forty-five surgical inpatients were included in this study: 20 in the first cycle and 25 in the second cycle. The first-cycle report showed that only 25% of VTE candidates received this regimen. In the second cycle, practice significantly improved, with 92% of admitted patients having their risk assessment tool completed within 24 h of admission. 79% of VTE prophylaxis candidates were prescribed adequate pharmacological prophylaxis within 14 h of admission. Conclusion: The rate of adequate thromboprophylaxis for inpatients undergoing surgery was very low before clinicians received education on VTE prevention, whereas was evidently high after they had received them. The cause of non-adherence in the pre-intervention phase was a lack of adequate knowledge regarding the magnitude and burden of HAT and the importance of thromboprophylaxis, which has a potential role in preventing the majority of HAT.

A native mitral valve mass beyond imagination.

The authors report a case of a patient with a history of IgA nephropathy that, during the admission for pneumonia, was found to have an incidental finding of a huge mitral valve (MV) mass on transthoracic echocardiography. The differential diagnosis was challenging because the clinical scenario raised the suspicion of possible infective endocarditis and the imaging features were suggestive of a myxoma or vegetation. The patient underwent urgent excision of the mass with MV replacement due to the high risk of embolism. Intraoperative findings were consistent with clot or vegetation. Pathology result of thrombus was beyond our imagination and at the best of our knowledge one case only has been reported. Awareness about native MV thrombosis and its etiologic factors, workup, and management is key for better medical and surgical management planning because this condition is extremely rare and challenging in the clinical and imaging arena.

A Ping Pong Ball in the Left Ventricle.

Diagnosing cardiac masses, especially those related to cardiac tumors, is often challenging in clinical practice. Though myxomas are the most common and well-known benign cardiac tumors, other rare and often-neglected tumors can be difficult to diagnose. In this case report, the authors describe a left ventricular cardiac mass with unique and striking imaging features.

Infective Endocarditis-Related Pseudoaneurysms After Bentall Surgery: The Role of 3D Printing in Pre-Surgical Planning and Management: Case Report.

We present a case report of a male patient who underwent modified Bentall surgery with a mechanical valved conduit due to severe aortic regurgitation and ascending aortic aneurysm. Four years later, the patient developed a cascade of events as acute stoke, infective endocarditis due to Brucella abortus complicated by pseudoaneurysms of aortic graft with left ventricular outflow tract communication. A multi-modality approach, included a three-dimensional printing, facilitated the diagnosis and surgical planning. During surgery, the team opted for a salvage approach, and the patient showed continued improvement during follow-up. This case highlights the importance of careful monitoring and detection of potential complications after Bentall surgery, as well as the value of 3D printing in pre-operative planning.

Association Between Expression of Vitamin D Receptor and Insulin-Like Growth Factor 1 Receptor Among Breast Cancer Patients.

Background: Vitamin D receptor (VDR) and insulin-like growth factor 1 receptor (IGF1R) are known to be involved in breast cancer (BC) progression. Our previous work reported a correlation of differential localization of IGF1R with hormone receptor status in BC. A recent report described VDR and IGF1R as potential indicators of BC prognosis, but their interplay was not discussed. The present study focused on understanding the association of VDR expression with IGF1R activation, different molecular markers, and subtypes of BC. Methods: A retrospective study was designed to evaluate the VDR expression among 48 BC patients pathologically diagnosed as invasive BC and were surgically treated at Sharjah Breast Care Center, University Hospital Sharjah (UHS), United Arab Emirates (UAE). Formalin-fixed paraffin-embedded (FFPE) tumor blocks with appropriate clinicopathological data were subjected to immunohistochemistry (IHC), and VDR protein expression was interpreted based on the staining intensity (SI) and the percentage of the positively stained cells (PP). Results: Nearly 44% of cases in the study were vitamin D deficient. A positive VDR expression with strong intensity (score > 4) was seen in 27 cases (56.3%). The expression pattern for VDR was equally distributed in cytoplasm and nucleus. For the IGF1R intensity, 24 cases (50%) of total cohort showed strong expression. A significant association was detected between IGF1R and VDR expression (P = 0.031). Conclusions: The present study identified positive association between IGF1R and VDR expression where most of the cases with strong VDR expression displayed strong IGF1R expression. These findings may contribute to current understanding on the role of VDR in BC and its interaction with IGF1R.

Mitral Valve Prolapse and Sudden Cardiac Death in Athletes at High Risk.

Mitral valve prolapse (MVP) is the most frequent valvulopathy in the general population, with usually a favourable prognosis. Although it can be associated with some complications, ventricular arrhythmias (VA) and sudden cardiac death (SCD) are the most worrying. The estimated risk of SCD in MVP is between 0.2% to 1.9% per year, including MVP patients with and without severe mitral regurgitation (MR). The association between SCD and MVP is expressed by a phenotype called "malignant MVP" characterized by transthoracic echocardiography (TTE) findings such as bileaflet myxomatous prolapse and mitral annulus disjunction (MAD), ECG findings such as repolarization abnormalities, complex ventricular arrhythmias (c-VAs) and LV fibrosis of papillary muscles (PMs) and inferobasal wall visualized by late gadolinium enhancement cardiac magnetic resonance (LGE-CMR). Therefore, attention is raised for patients with "arrhythmic MVP" characterized from an ECG point of view by frequent premature ventricular contractions (PVCs) arising from one or both PMs as well as by T-wave inversion in the inferolateral leads. In athletes, SCD is the most frequent medical cause of death and in young subjects (< 35 years) usually is due to electrical mechanism affecting who has a silent cardiovascular disease and are not considered per se a cause of increased mortality. In MVP, SCD was reported to happen during sports activity or immediately after and valve prolapse was the only pathological aspect detected. The aim of the present paper is to explore the association between SCD and MVP in athletes, focusing attention on ECG, TTE in particular, and CMR findings that could help to identify subjects at high risk for complex arrhythmias and eventually SCD. In addition, it is also examined if sports activity might predispose patients with MVP to develop major arrhythmias.

Echocardiography in Simple Congenital Heart Diseases: Guiding Adult Patient Management.

This article provides comprehensive insights into the evaluation of simple congenital heart diseases (CHDs) in adults, emphasizing the pivotal role of echocardiography. By focusing on conditions such as congenital aortic stenosis, aortic coarctation, patent ductus arteriosus, atrial septal defects (ASDs), and ventricular septal defects (VSDs), the review underscores echocardiography's intricate contributions to precise clinical decision-making. Echocardiography serves as the primary imaging modality, offering high-resolution visualization of anatomical anomalies and quantification of hemodynamic parameters. It enables tailored therapeutic strategies through its capacity to discern the dimensions, spatial orientation, and dynamic shunt dynamics of defects such as ASDs and VSDs. Moreover, echocardiography's advanced techniques, such as tissue Doppler imaging and speckle tracking, provide detailed insights into atrial mechanics, diastolic function, and ventricular filling kinetics. Integration of echocardiographic findings into clinical practice empowers clinicians to create personalized interventions based on quantified ventricular function, which spans systolic and diastolic aspects. This approach facilitates risk stratification and therapeutic planning, particularly pertinent in heart failure management within the CHD patient population. In summary, echocardiography transcends its role as an imaging tool, emerging as a precision-guided instrument adept at navigating the complexities of simple CHD in adults. Its ability to expedite diagnosis, quantify hemodynamic impacts, and unravel multifaceted functional dynamics culminates in a comprehensive depiction of these conditions. The fusion of these insights with clinical expertise empowers clinicians to navigate the intricate pathways of CHD, crafting tailored therapeutic strategies characterized by precision and efficacy.

Three-dimensional printing in integrated multi-modality imaging approach for management of prosthetic valves infective endocarditis.

After heart failure, infectious endocarditis is the second leading cause of death in patients with prosthetic valves. Aortic pseudoaneurysms are a serious complication of infective endocarditis in mechanical or bioprosthetic aortic prostheses. Diagnostic and management challenges are posed by aortic pseudoaneurysms. In these cases, a multi-modality imaging approach with a heart team is recommended. We described two cases of aortic pseudoaneurysms that developed as a result of infective endocarditis. The first case involved a TAVI patient who developed infective endocarditis as a result of diabetic foot complications. Because traditional echocardiography and computed tomography failed to show the anatomy of the lesion, we used 3D printing to show the anatomy, extension of the pseudoaneurysm, and proximity to the right coronary artery. The second case involved a patient who underwent Bentall's surgery with an aortic root and mechanical aortic valve and later developed infective endocarditis complicated by pseudoaneurysms. In this case, 3D printing was used for preoperative surgical planning.

Diagnosis of Mitral Valve Prolapse: Much More than Simple Prolapse. Multimodality Approach to Risk Stratification and Therapeutic Management.

Mitral valve prolapse (MVP) is the most common valvular disease with a prevalence of 2%. It has generally a benign course; however, recent findings suggested an association between MVP and complex arrhythmias and eventually cardiac arrest and for this reason, it is also called arrhythmogenic MVP. Subjects who experience this complication are in general young women, with thickened mitral leaflets or bileaflet prolapse not necessarily associated with severe mitral regurgitation (MR). The nature of the relation between MVP and cardiac arrest is not clearly understood. Actually, the challenging task is to find the cluster of prognostic factors including T-wave inversion, polymorphic premature ventricular contractions, bileaflet prolapse, MR severity, but most importantly, those parameters of hypercontractility, mitral annulus disjunction (MAD), and myocardial fibrosis using a multimodality approach. Transthoracic echocardiography is the first-line imaging modality for the diagnosis of MVP, but also for detecting MAD and hypercontractility, followed by cardiac magnetic resonance for tissue characterization and detection of myocardial and papillary muscle fibrosis, using either late gadolinium enhancement (at the basal segment of the inferolateral wall and papillary muscles) (macro-fibrosis), or diffuse fibrosis by T1 mapping (native and post contrast T1). Moreover, there are also preliminary data on positron emission tomography utilizing 18F-fluorodeoxyglucose as a tool for providing evidence of early myocardial inflammation. The objective of this review article is to provide the clinician with an overview and a practical clinical approach to MVP for risk stratification and treatment guidance.

Reciprocal interferences of the left ventricular assist device and the aortic valve competence.

Patients suffering from end-stage heart failure tend to have high mortality rates. With growing numbers of patients progressing into severe heart failure, the shortage of available donors is a growing concern, with less than 10% of patients undergoing cardiac transplantation (CTx). Fortunately, the use of left ventricular assist devices (LVADs), a variant of mechanical circulatory support has been on the rise in recent years. The expansion of LVADs has led them to be incorporated into a variety of clinical settings, based on the goals of therapy for patients ailing from heart failure. However, with an increase in the use of LVADs, there are a host of complications that arise with it. One such complication is the development and progression of aortic regurgitation (AR) which is noted to adversely influence patient outcomes and compromise pump benefits leading to increased morbidity and mortality. The underlying mechanisms are likely multifactorial and involve the aortic root-aortic valve (AV) complex, as well as the LVAD device, patient, and other factors, all of them alter the physiological mechanics of the heart resulting in AV dysfunction. Thus, it is imperative to screen patients before LVAD implantation for AR, as moderate or greater AR requires a concurrent intervention at the time of LVADs implantation. No current strict guidelines were identified in the literature search on how to actively manage and limit the development and/or progression of AR, due to the limited information. However, some recommendations include medical management by targeting fluid overload and arterial blood pressure, along with adjusting the settings of the LVADs device itself. Surgical interventions are to be considered depending on patient factors, goals of care, and the underlying pathology. These interventions include the closure of the AV, replacement of the valve, and percutaneous approach via percutaneous occluding device or transcatheter aortic valve implantation. In the present review, we describe the interaction between AV and LVAD placement, in terms of patient management and prognosis. Also it is provided a comprehensive echocardiographic strategy for the precise assessment of AV regurgitation severity.

Loss of engagement in controlling chronic anticoagulation therapy during Covid-19 stringency measures. A single center experience of disproportioned increase of stuck mechanical valves.

Stuck valve is a very rare and severe complication that occurs in mechanical valve replacement patients with ineffective anticoagulation. However, with COVID-19 restriction measures, it became challenging to regularly assess INR to make sure it falls within the target therapeutic range to prevent this complication. We present a series of 10 patients who either underwent transthoracic echocardiography for a suspected stuck valve or were seen at the outpatient valve clinic with the residual consequences of a stuck valve during the COVID-19 restriction measures in our institute. Stuck prosthetic valves incident has increased significantly during this period, particularly those in the mitral position for which urgent replacement and prolonged hospitalization were necessary. Particularly with the COVID-19 restrictions in place, these cases highlight the need for physicians to be aware of the dramatic increase in the incidence of stuck prosthetic valves in patients on chronic warfarin therapy.

Effect of thyroid function status in hemodialysis patients on erythropoietin resistance and interdialytic weight gain.

Thyroid function abnormalities are common in hemodialysis (HD) patients. Here, we investigated their frequency and impact on intradialytic hemodynamics and erythropoietin resistance index (ERI). Demographic and laboratory data including thyroid-stimulating hormone (TSH), interdialytic weight gain, and intradialytic blood pressure (BP) changes were measured, and ERI was calculated. The prevalence and causes of abnormities in TSH and free thyroxine (FT4) and their effects on ERI and intradialytic hemodynamics were then assessed. One hundred and thirty patients (mean age, 57.1 ± 19.2 years; 66.4% diabetic, 86.7% hypertensive) were enrolled. Among them, 16.7% had hypothyroidism, 2.3% had hyperthyroidism, and 10.9% had subclinical hypothyroidism. TSH level was significantly associated with higher BP (P <0.05), lower albumin (3.6 ± 4.4 and 2.6 ± 1.8, respectively; P = 0.05), lower dialysis hours (3.9 ± 5.3 and 2.6 ± 1.8, respectively), and lower ERI (3.7 ± 4.4 and 2.4 ± 1.9, respectively; P = 0.05). FT4 was significantly associated with higher interdialytic weight gain (13.4 ± 4.3 and 11.8 ± 2.2 pmol/L, respectively; P = 0.009) and higher pre-HD diastolic BP (13.2 ± 4.0 and 12.0 ± 2.9 pmol/L, respectively; P = 0.05). A negative correlation was seen between TSH level and urea reduction ratio (r = 0.29, P = 0.002), serum albumin (r = 0.304, P = 0.001), hemoglobin level (r = 0.26, P = 0.005), and ERI (r = 0.2, P = 0.002). A higher TSH level was associated with hypertension, lower albumin level, fewer dialysis hours, and increased resistance to erythropoietin. TSH level was negatively correlated with dialytic adequacy, serum albumin level, hemoglobin level, and ERI.

Delayed presentation of right and left ventricle perforation due to suicidal nail gun injury.

We describe a case of delayed presentation of attempted suicide with a nail gun that penetrated both the right and left ventricle. Nearly invisible entry point of the nail did not reflect the gravity of the injury. A prompt and accurate history along with chest X-ray and bedside transthoracic echocardiography facilitated localization of the nails and helped assess the damage. Despite cardiac arrest after induction of general anesthesia, the patient had a successful outcome. Issues related to the injury site, modalities of investigation and management strategies in a patient with cardiac tamponade are discussed.