Fatores intervenientes na gerência do cuidado de enfermagem à criança hospitalizada com cardiopatia reumática / Intervening factors in the management of nursing care for children hospitalized with rheumatic heart disease / Factores que intervienen en la gestión del cuidado de enfermería al niño hospitalizado con cardiopatía reumática

Objetivo: analisar os fatores intervenientes na gerência do cuidado de enfermagem à criança hospitalizada com cardiopatia reumática. Método: estudo descritivo-exploratório com abordagem qualitativa, que utilizou a Teoria Fundamentada em Dados e o Interacionismo Simbólico, respectivamente, como referencial metodológico e teórico. A coleta de dados foi realizada em uma instituição especializada em atendimento cardiológico, no munícipio do Rio de Janeiro. Foram entrevistados 19 profissionais de enfermagem através de um roteiro semiestruturado. Resultado: emergiram os seguintes fatores intervenientes na prática da gerência do cuidado: condição socioeconômica da família, comportamento da criança, condições de trabalho, comunicação ineficaz, educação permanente, trabalho em equipe e experiência profissional. Conclusão: os resultados apontam para a necessidade de proposição de estratégias de ação e interação que facilitem a prática gerencial de cuidado à criança com cardiopatia reumática e sua família face aos fatores intervenientes identificados.

Objective: to analyze the factors involved in the management of nursing care for children hospitalized with rheumatic heart disease. Method: this is a descriptive-exploratory study with a qualitative approach, which used Data-Based Theory and Symbolic Interactionism, respectively, as methodological, and theoretical references. Data was collected in an institution specializing in cardiac care in the city of Rio de Janeiro. Nineteen nursing professionals were interviewed using a semi-structured script. Result: the following intervening factors in the practice of care management emerged: the family's socioeconomic status, the child's behavior, working conditions, ineffective communication, continuing education, teamwork, and professional experience. Conclusion: the results point to the need to propose strategies for action and interaction that facilitate management practice in caring for children with rheumatic heart disease and their families, given the intervening factors identified.

Objetivo: analizar los factores que intervienen en la gestión del cuidado de enfermería al niño hospitalizado con cardiopatía reumática. Método: estudio descriptivo-exploratorio con enfoque cualitativo, cuyos marcos metodológico y teórico fueron la Teoría Fundamentada y el Interaccionismo Simbólico, respectivamente. La recolección de datos se realizó en una institución especializada en atención cardiológica, en la ciudad de Río de Janeiro. Fueron entrevistados 19 profesionales de enfermería mediante un cuestionario semiestructurado. Resultado: surgieron los siguientes factores intervinientes en la práctica de la gestión del cuidado: condición socioeconómica de la familia, comportamiento del niño, condiciones de trabajo, comunicación ineficaz, educación continua, trabajo en equipo y experiencia profesional. Conclusión: los resultados indican que es necesario proponer estrategias de acción e interacción que faciliten la práctica de la gestión del cuidado al niño con cardiopatía reumática y a sus familiares, con respecto a los factores intervinientes identificados.

Biopsychosocial conditions of patients in the rheumatology department of a university hospital.

Introduction: The aim was to examine biopsychosocial conditions of patients hospitalized in the rheumatology department of a university hospital. Material and methods: Ninety-six patients (mean age: 53.14 ±16.83 years) receiving inpatient treatment at the rheumatology service of a university hospital were included. Chest circumference, manual muscle testing, general well-being (Visual Analogue Scale - VAS), the Fatigue Severity Scale, the Rivermead Mobility Index, the Beck Anxiety Inventory, and the Nottingham Health Profile were used for evaluation. Results: The average number of days hospitalized was 15.57 ±15.11. Mean disease duration was 7.91 ±9.34 years. Respiratory rate per minute was 22.55 ±6.03. Chest circumference measurement at rest was 97.01 ±9.70 cm, inspiration was 99.71 ±9.67 cm, expiration was 94.10 ±13.91 cm. Quadriceps muscle strength (on a scale of 0-5) was 4.26 ±0.74 on the right and 4.16 ±0.76 on the left; biceps brachii muscle strength was 4.46 ±0.64 on the right and 4.39 ±0.78 on the left. The VAS score was 6.03 ±2.51; the Rivermead Mobility Index was 11.41 ±4.11; the Nottingham Health Profile total score was 39.18 ±22.44; the energy level sub-score was 52.89 ±37.06. History of previous hospitalization was found in 42 patients (43.8%). Five patients (5.2%) were at bed level, 4 patients (4.2%) were at sitting level, 7 patients (7.3%) were at standing level, and 80 patients (83.3%) were at walking level. Seventeen patients (17.7%) used assistive devices for mobilization. Sixty-one patients (63.5%) were fatigued, and 21 patients (21.9%) had moderate anxiety. Conclusions: Inspiratory capacity of patients hospitalized in rheumatology service is low. Their respiratory rate is higher than the normal value. Their mobility and energy levels are at average values while fatigue and anxiety levels need to be considered. In addition to pharmacological treatments, we recommend that patients hospitalized in rheumatology service be supported by appropriate exercises provided by physiotherapists.

Methods for Establishing a Rat Model of Rheumatic Heart Disease.

Rheumatic heart disease (RHD) is responsible for nearly 250,000 deaths annually and poses a significant health threat in developing areas. The unclear pathogenesis of RHD makes the development of cost-effective treatments challenging, particularly as current surgical options are expensive and technologically demanding, exacerbating the economic and quality-of-life burdens for patients. Given the risks associated with direct human experimentation due to the uncertain pathogenesis, using a rat model infected with Group A Streptococcus (GAS) has become a crucial experimental strategy for RHD research. The development of an RHD rat model, refined over 23 years, now stands as a pivotal approach in studies aiming to understand the disease's pathogenesis. This review summarizes the evolution, characteristics, advantages, and limitations of the RHD rat model, offering insights into potential areas for improvement. It aims to provide researchers with a comprehensive understanding of the model, supporting the advancement of research methodologies and the discovery of innovative treatments for RHD.

Feasibility and Exploration of a Standardized Protocol for Cardiac CT Assessment of Rheumatic Mitral Disease.

Rheumatic mitral valve disease often requires surgical interventions, such as percutaneous mitral commissurotomy, surgical mitral valve repair, or replacement, especially in severe cases. This necessitates a precise preoperative assessment of the extent of mitral valve disease. Currently, transthoracic echocardiography, the gold standard for preoperative assessment, has limitations, such as restricted acoustic windows and dependence on the operator, which can affect the evaluation of subvalvular structures and calcification of the mitral valve. Previous studies have shown that cardiac computed tomography (CT), with its high resolution, strong multiplanar reconstruction capabilities, and sensitivity to calcifications, can effectively overcome these limitations. Therefore, this study aims to summarize and evaluate the effectiveness of cardiac CT in examining mitral valve leaflets, annulus, and subvalvular structures. It also reviews the feasibility and guiding significance of using cardiac CT to assess characteristic rheumatic mitral valve lesions.

Infective endocarditis following percutaneous balloon mitral valvuloplasty: A case report of a 25-year-old female from Jimma Medical Center of Ethiopia.

Rheumatic mitral stenosis is a common rheumatic heart diseases in sub-Saharan Afrleading to increased morbidity and mortality. Percutaneous mitral balloon valvuloplasty is the mainstay of less invasive therapy in those with moderate to severe valve stenosis, being symptomatic despite optimal medical therapy. Though generally save with experienced hand and setup, post procedural complications include development of mitral regurgitation, tear and thrombosis. Mitral leaflet tear and development of infective endocarditis are an uncommon but might lead to increased morbidity, rehospitalization and mortality.

Socioeconomic factors and COVID-19 mortality in immune-mediated rheumatic diseases patients: regional analysis from Argentina, Mexico and Brazil.

BACKGROUND: SARS-CoV-2 infection has become a major international issue, not only from a medical point of view, but also social, economic and political. Most of the available information comes from the United States, Europe, and China, where the population and the socioeconomic status are very different from Latin American countries. This study evaluates the effect of regional socioeconomic characteristics on mortality due SARS-CoV-2 infection in patients with immune-mediated rheumatic diseases (IMRD) from Argentina, Mexico and Brazil. METHODS: Data from three national registries, SAR-COVID (Argentina), CMR-COVID (Mexico) and ReumaCoV-Brasil (Brazil), were combined. Adult IMRD patients with SARS-CoV-2 infection were recruited. National data for each province/state, including population density, number of physicians per inhabitant, income, unemployment, GINI index, Municipal Human Development Index (MHDI), stringency index, vaccination rate and most frequent viral strains per period were assessed as risk factors for mortality due to COVID-19. RESULTS: A total of 4744 patients were included, 2534 (53.4%) from SAR-COVID, 1166 (24.6%) from CMRCOVID and 1044 (22.0%) from ReumaCoV-Brasil. Mortality due to COVID-19 was 5.4%. In the multivariable analysis, higher number of physicians per 1000 inhabitants and being infected during the vaccination period of each country were associated with lower mortality. After adjustment for socioeconomic factors, there was no association with country of residence and mortality. CONCLUSION: These findings corroborate the complex interplay between socioeconomic factors, rheumatic disease activity, and regional disparities as determinants of death due to COVID-19 in Argentina, Brazil and Mexico. Thus, this research provides valuable insights for guiding public health policies and clinical practice in the ongoing fight against the COVID-19 pandemic.

An 8-year single-centre experience of patients with subclinical rheumatic carditis.

OBJECTIVE: Transthoracic echocardiography is the gold standard method for screening and confirmation of acute rheumatic fever and subclinical rheumatic heart disease. Secondary antibiotic prophylaxis that is regularly employed in subclinical rheumatic heart disease may help to reverse mild rheumatic carditis lesions, delay the progression of the disease, reduce morbidity and mortality, and improve patients' quality of life. MATERIALS AND METHODS: We retrospectively evaluated the outcomes of 180 patients with subclinical rheumatic heart disease who were followed up for a mean of 4.92 ± 2.0 (3.5-6.5) years. RESULTS: Between 1 March 2015 and 31 December 2023, 180 patients diagnosed with subclinical rheumatic heart disease with a mean follow-up of 4.92 ± 2.0 (3.5-6.5) years were included in the study. Of the patients, 50.6% were male, 49.4% were female, mean age at diagnosis was 11.74 ± 3.18 (9.68-13.65) years, and mean follow-up period was 4.92 ± 2.0 (3.5-6.5) years. Further, 87.2 % of the patients had mitral valve regurgitation, 38.3% had aortic valve regurgitation, and 27.2% had both valve (aortic and mitral valve) regurgitation. Moreover, Sydenham chorea was also diagnosed in 7.8% the patients. Of the patients, 90% had mild rheumatic heart disease, 7.8% had moderate rheumatic heart disease, and 2.2% had severe rheumatic heart disease. After the diagnosis of rheumatic heart disease, 76.7% patients received regular and 23.3% irregular secondary benzathine penicillin G prophylaxis. CONCLUSION: We believe that echocardiography demonstrates its efficacy and safety profile in reducing the risk of rheumatic heart disease in patients diagnosed with subclinical rheumatic carditis and complying with regular secondary antibiotic prophylaxis.

Direct Oral Anticoagulants for Rheumatic Heart Disease-Associated Atrial Fibrillation Post-Bioprosthetic Mitral Valve Replacement.

BACKGROUND: The efficacy of direct oral anticoagulants (DOACs) in preventing ischemic and thromboembolic events may be suboptimal in atrial fibrillation (AF) patients with rheumatic mitral stenosis. However, their safety and effectiveness after mitral valve replacement (MVR) using bioprosthetic valves is unclear. OBJECTIVES: This study sought to evaluate the safety and effectiveness of DOACs vs warfarin among patients with rheumatic heart disease (RHD)-associated AF after bioprosthetic MVR. METHODS: We performed an observational analysis identifying patients with RHD and AF who underwent bioprosthetic MVR. Primary effectiveness and safety outcomes were ischemic events and major bleeding, respectively. Secondary outcomes included all-cause mortality, cardiac thrombosis, myocardial infarction, and all-cause hospitalization. Propensity score matching was performed to account for the differences in baseline characteristics and comorbidities. RESULTS: A total of 3,950 patients were identified; 76% were on warfarin and 24% on DOAC post-MVR. The DOAC group had a higher burden of baseline comorbidities and prior cardiovascular procedures compared with the warfarin group. The propensity score matching balanced baseline characteristics in 1,832 patients (916 in each group), with a mean age of 69 years. At the 5-year follow-up, DOACs were associated with a lower incidence of major bleeding compared with warfarin (HR: 0.76; 95% CI: 0.62-0.94), with no significant difference in ischemic events, mortality, cardiac thrombosis, myocardial infarction, or hospitalization. CONCLUSIONS: Among patients with RHD-associated AF patients post-bioprosthetic MVR, DOACs are associated with lower major bleeding and comparable effectiveness, indicating a potential alternative to warfarin. Further randomized controlled trials are warranted to validate these findings in this population.

Emerging Role and Mechanism of Mesenchymal Stem Cells-Derived Extracellular Vesicles in Rheumatic Disease.

Mesenchymal stem cells (MSCs) are pluripotent stem cells derived from mesoderm. Through cell-to-cell contact or paracrine effects, they carry out biological tasks like immunomodulatory, anti-inflammatory, regeneration, and repair. Extracellular vesicles (EVs) are the primary mechanism for the paracrine regulation of MSCs. They deliver proteins, nucleic acids, lipids, and other active compounds to various tissues and organs, thus facilitating intercellular communication. Rheumatic diseases may be treated using MSCs and MSC-derived EVs (MSC-EVs) due to their immunomodulatory capabilities, according to mounting data. Since MSC-EVs have low immunogenicity, high stability, and similar biological effects as to MSCs themselves, they are advantageous over cell therapy for potential therapeutic applications in rheumatoid arthritis, systemic erythematosus lupus, systemic sclerosis, Sjogren's syndrome, and other rheumatoid diseases. This review integrates recent advances in the characteristics, functions, and potential molecular mechanisms of MSC-EVs in rheumatic diseases and provides a new understanding of the pathogenesis of rheumatic diseases and MSC-EV-based treatment strategies.

Trigger finger - Poor outcome of surgery associated with younger age, pain, psoriatic arthritis and atopic disease.

Background: Trigger finger, or stenosing tendovaginitis, is one of the most common causes of hand disability, where a finger or thumb painfully snaps and locks due to a tendon-sheath size mismatch at the A1 pulley. The exact aetiology of trigger finger is unknown, though it is associated with factors like diabetes, rheumatic disease and carpal tunnel syndrome. The main purpose of this prospective study was to explore clinical characteristics and comorbidities in a cohort of 139 patients who underwent surgery for trigger finger and find factors of importance for the outcome 1 year postoperatively. Methods: Pain, range of motion, hand function evaluated by the Disabilities of the Arm Shoulder and Hand questionnaire as well as Quinnell grade of triggering were examined preoperatively. Symptom duration, working status, medical history and comorbidities at baseline were also noted. Further, range of motion was evaluated 3 months after surgery, pain and hand function were evaluated 3 and 12 months after surgery. An outcome scale with three levels was defined. The development of any new comorbidities was monitored during an extended postoperative observation period, with a mean duration of 70 months (range: 56-88 months). Results: Poor outcome was strongly associated with younger age (P = 0.0009), a high level of preoperative pain in the operated hand (P = 0.0027), psoriatic arthritis (P = 0.021) and atopic disease (P = 0.028; odds ratio [OR]: 3.87, 95% confidence interval [CI]: 1.15-13.04). A low range of motion preoperatively did not affect the outcome. Carpal tunnel syndrome was the most common comorbidity but did not affect the outcome. A good preoperative range of motion, good hand function and less pain were associated with better outcomes. Conclusion: Younger age, a high level of preoperative pain, psoriatic arthritis and atopic disease were factors associated with a worse outcome of trigger finger surgery. Pain and disability decreased 3 months postoperatively and continued to decrease between 3 and 12 months.

Open Heart Dual Valve Surgery Without Blood Transfusion: A Case Report.

In Nepal, rheumatic heart disease (RHD) is alarmingly prevalent, marked by presentations like migratory joint arthritis, carditis, subcutaneous nodules, erythema marginatum, and Sydenham chorea. This condition can progress to instigate valvular defects. Although these patients are first approached medically, they may require surgery for severe cases. Refusal for blood transfusion might not be a major issue for other general surgeries; however, in cardiac surgery, where there is massive blood loss, it's quite a challenge. This challenge becomes even more pronounced in a developing country that lacks advanced facilities like a cell saver for autotransfusion. Herein, we report a case of a 22-year-old female, a Jehovah's Witness, suffering from RHD, severe mitral regurgitation, severe tricuspid regurgitation, and severe pulmonary artery hypertension. She underwent mitral valve replacement and tricuspid repair surgery (modified DeVega) by avoiding any form of blood product transfusion.

Rheumatic Adverse Effects With Biologics Targeting Type 2 Inflammation In Severe Asthma: A Vigibase® Study.

CLINICAL IMPLICATIONS BOX: Biologics in severe asthma are associated with an excess reporting of rheumatic diseases and rheumatic symptoms in the WHO database. The profile of rheumatic adverse events varies according to biologics and their mechanisms of action.

Rheumatic heart disease manifesting as mitral stenosis and tricuspid regurgitation in a young Asian male: a case report.

Background: Rheumatic heart disease (RHD) is a major global health issue because of its potential to cause heart failure. While RHD has been reported more frequently in women, this case report highlights the clinical manifestations, diagnosis, and management of rheumatic multivalvular disease in a young Asian male. Case summary: A 46-year-old Asian man with a history of percutaneous mitral valvuloplasty (PMV) was admitted with dyspnoea and generalized oedema that severely hindered his quality of life. Transthoracic and transoesophageal echocardiography revealed severe mitral stenosis, left atrial appendage (LAA) thrombus, and severe tricuspid regurgitation due to RHD. Following a comprehensive evaluation by a multidisciplinary team, we advised mitral valve replacement, LAA thrombectomy, and tricuspid valve annuloplasty based on the detailed imaging of the valve anatomy and the patient's low surgical risk. Surgical intervention led to considerable improvement in the patient's symptoms, enabling a return to routine activities. Discussion: This case highlights the chronic nature of RHD and its potential to cause heart failure. This report emphasizes the need for regular follow-up in patients with a history of RHD to detect potential complications and ensure timely management. The successful outcome in this case underscores the importance of a team-based approach for managing complex valvular heart disease.

Muscle Strength Comparison in Immune-Mediated Rheumatic Disease vs Healthy Adults: A Meta-Analysis.

OBJECTIVES: Patients with immune-mediated rheumatic diseases (IMRDs) often exhibit reduced muscle strength. Therefore, this review aimed to evaluate patients with muscle strength IMRDs compared with healthy control patients and to summarize the relationship between low muscle strength and clinical features in patients with IMRDs. DESIGN: Systematic review with meta-analysis of case-control studies. SETTING AND PARTICIPANTS: Patients with IMRDs. METHODS: A comprehensive search was conducted in the Embase, MEDLINE, Web of Science, and Cochrane databases to identify relevant studies published up to November 2023 in rheumatoid arthritis, systemic lupus erythematosus, systemic sclerosis, and spondyloarthritis. Meta-analysis was performed using a random-effects model to verify the mean difference (MD) muscle strength between patients with IMRDs and an age- and sex-matched healthy group. RESULTS: We identified 11,692 studies, and 760 studies were selected for screening. Ultimately, 26 studies met the inclusion criteria, composed of 2661 individuals, mostly women. The IMRDs women group had lower handgrip muscle strength (MD, -9.53; 95% CI, -11.78 to -7.28 kg) than the healthy group, whereas the handgrip strength men groups did not differ significantly from that of the healthy group. Similar trend was observed in lower limb muscle strength for the IMRDs women group than the healthy group (MD, -63.10; 95% CI, -94.18 to -32.01 Nm). Four studies examined muscle strength and clinical features in rheumatoid arthritis: one associated it with age and disease activity, 2 associated it with disease duration, and 3 associated it with physical function. In systemic lupus erythematosus, only 2 studies associated low muscle strength with age, disease activity, and fatigue. No associations were found in spondyloarthritis, and none were found in systemic sclerosis. CONCLUSIONS AND IMPLICATIONS: Patients with IMRD exhibit lower muscle strength than healthy counterparts, with low strength moderately associated with longer disease duration, worsening disease activity, and decline in physical function. Targeted interventions are crucial for preventing and managing muscle weakness in IMRDs.

Population pharmacokinetics of long-term hydroxychloroquine therapy in patients with rheumatic diseases.

AIMS: Hydroxychloroquine (HCQ) is recommended for the long-term treatment of rheumatic diseases such as rheumatoid arthritis and systemic lupus erythematosus. Given the complex process of HCQ metabolism and individual physiological differences, the metabolic profile of HCQ after long-term administration is unknown. This study aimed to establish a population pharmacokinetic model for long-term HCQ treatment in patients with rheumatic diseases and to identify the factors influencing HCQ metabolism. METHODS: This study included 274 HCQ whole-blood trough concentration data points from 203 patients with rheumatic diseases, all of whom had taken HCQ for more than 6 months, with a median duration of 36 months. A nonlinear mixed-effects model was derived to establish a population pharmacokinetic model, and potential influencing factors were investigated. Different covariates were used to simulate the optimal dose. RESULTS: The final model describing the HCQ blood concentration-time profile was a compartmental model with first-order absorption. The estimated values for apparent clearance and volume of distribution were 16.4 L/h and 1220 L, respectively. The clearance of HCQ gradually increased with increasing dosing regimens and weight gain. Monte Carlo simulations were used to determine the optimal dosage regimens for patients with different body weights and drug durations. The simulation results revealed that an initial dose of 5 mg/kg was appropriate. CONCLUSIONS: We developed a population pharmacokinetic model for long-term HCQ therapy in patients with rheumatic diseases. HCQ clearance from whole blood increased progressively with increasing duration of drug administration.

Secondary prophylaxis and specialist review compliance in paediatric patients with acute rheumatic fever and rheumatic heart disease in a Western Australian metropolitan setting.

AIM: Rheumatic heart disease (RHD), a consequence of acute rheumatic fever (ARF), continues to cause significant morbidity and mortality in susceptible young people. Secondary antibiotic prophylaxis is an effective strategy to prevent ARF recurrence and RHD progression. However, the proportion of patients receiving the recommended minimum benzathine penicillin injections (>80%) remains low. This retrospective cohort study reviews the utility of the Hospital in the Home nursing service in providing secondary prophylaxis for outpatients in a metropolitan state capital. METHODS: Fifty-eight patients with ARF/RHD receiving secondary prophylaxis through the Hospital in the Home service between 1 July 2012 and 30 June 2020 were included. Compliance of secondary prophylaxis, specialist review and echocardiogram frequency were compared against the recommendations from the Australian RHD guidelines. RESULTS: Forty-six (79%) patients received >80% of recommended doses, with 36% (n = 21) receiving 100% and a further 29% (n = 17) achieving compliance of 90%-99%. We found that 35% of patients attended all specialist reviews (including echocardiography) at the recommended frequency, with 75% of those not attending all reviews, missing only one or two appointments. Compliance was greater in those with more severe disease. In the 12 (21%) patients who did not meet the >80% target, compliance ranged between 33% and 79% (mean 64.5%) and all had priority 3 disease. CONCLUSION: Community-based administration of secondary prophylaxis through a registry-based system is an effective strategy of improving compliance within a metropolitan area and should be utilised in a culturally safe and collaborative manner to increase uptake.

Research progress of SREBP and its role in the pathogenesis of autoimmune rheumatic diseases.

Autoimmune rheumatic diseases comprise a group of immune-related disorders characterized by non-organ-specific inflammation. These diseases include systemic lupus erythematosus (SLE), rheumatoid arthritis (RA), ankylosing spondylitis (AS), gout, among others. Typically involving the hematologic system, these diseases may also affect multiple organs and systems. The pathogenesis of autoimmune rheumatic immune diseases is complex, with diverse etiologies, all associated with immune dysfunction. The current treatment options for this type of disease are relatively limited and come with certain side effects. Therefore, the urgent challenge remains to identify novel therapeutic targets for these diseases. Sterol regulatory element-binding proteins (SREBPs) are basic helix-loop-helix-leucine zipper transcription factors that regulate the expression of genes involved in lipid and cholesterol biosynthesis. The expression and transcriptional activity of SREBPs can be modulated by extracellular stimuli such as polyunsaturated fatty acids, amino acids, glucose, and energy pathways including AKT-mTORC and AMP-activated protein kinase (AMPK). Studies have shown that SREBPs play roles in regulating lipid metabolism, cytokine production, inflammation, and the proliferation of germinal center B (GCB) cells. These functions are significant in the pathogenesis of rheumatic and immune diseases (Graphical abstract). Therefore, this paper reviews the potential mechanisms of SREBPs in the development of SLE, RA, and gout, based on an exploration of their functions.

Left atrial function in patients with rheumatic mitral stenosis: addressing prognostic insights beyond atrial fibrillation prediction.

Aims: Rheumatic mitral stenosis (MS) frequently leads to impaired left atrial (LA) function because of pressure overload, highlighting the underlying atrial pathology. Two-dimensional speckle tracking echocardiography (2D-STE) offers early detection of LA dysfunction, potentially improving risk assessment in patients with MS. This study aims to evaluate the predictive value of LA function assessed by 2D-STE for clinical outcomes in patients with MS. Methods and results: Between 2011 and 2021, patients with MS underwent LA function assessment using 2D-STE, with focus on the reservoir phase (LASr). Atrial fibrillation (AF) development constituted the primary outcome, with death or valve replacement as the secondary outcome. Conditional inference trees were employed for analysis, validated through sample splitting. The study included 493 patients with MS (mean valve area 1.1 ± 0.4 cm2, 84% female). At baseline, 166 patients (34%) had AF, with 62 patients (19%) developing AF during follow-up. LASr emerged as the primary predictor for new-onset AF, with a threshold of 17.9%. Over a mean 3.8-year follow-up, 125 patients (25%) underwent mitral valve replacement, and 32 patients (6.5%) died. A decision tree analysis identified key predictors such as age, LASr, severity of tricuspid regurgitation (TR), net atrioventricular compliance (C n), and early percutaneous mitral valvuloplasty, especially in patients aged ≤49 years, where LASr, with a threshold of 12.8%, significantly predicted adverse outcomes. Conclusion: LASr emerged as a significant predictor of cardiovascular events in this MS cohort, validated through a decision tree analysis. Patients were stratified into low- or high-risk categories for adverse outcomes, taking into account LASr, age, TR severity, and C n.