Left Ventricular Hypertrophy Findings on Electrocardiogram Predict Impaired Left Atrial Functions.

OBJECTIVE: Electrocardiographic left ventricular hypertrophy (ECG LVH) holds significant clinical importance in cardiovascular disease. Pathological processes that lead to left ventricular hypertrophy (LVH) also induce remodeling and impair left atrial (LA) function. Atrial function can be assessed using speckle-tracking echocardiography. This study investigates the potential impact of ECG LVH on LA strain. METHODS: A total of 62 individuals diagnosed with LVH, based on the echocardiographic left ventricular mass index, were included. ECG LVH was assessed using established protocols: the Sokolow-Lyon voltage criteria (SV1 + RV5/RV6 > 35 mm), Cornell voltage criteria (RaVL + SV3 > 28 mm for men and > 20 mm for women), and the Cornell product criteria [(SV3 + RaVL + (for women 8 mm)] x QRS duration > 2440 mm x ms). Participants were categorized into two groups based on the presence or absence of ECG LVH. The relationship between LA strain measures and ECG characteristics was explored. RESULTS: The study population had a median age of 58.3 ± 10.1 years, with 40.3% being female, 91.9% hypertensive, and 35.5% diabetic. Nineteen patients (30.6%) were identified with ECG LVH based on Sokolow-Lyon voltage, Cornell voltage, or Cornell product criteria. These patients exhibited significantly reduced LA reservoir, conduit, and contraction strains (P < 0.001). Statistically significant correlations were observed between all three phases of LA strain measures and Sokolow-Lyon voltage (reservoir r = -0.389, P < 0.01; conduit r = -0.273, P < 0.05; contraction r = -0.359, P < 0.01), Cornell voltage (reservoir r = -0.49, P < 0.001; conduit r = -0.432, P < 0.001; contraction r = -0.339, P < 0.01), and Cornell product (reservoir r = -0.471, P < 0.001; conduit r = -0.387, P < 0.01; contraction r = -0.362, P < 0.01). CONCLUSION: ECG LVH is associated with impaired LA strain, validating its use as an effective tool for predicting LA dysfunction.

Large saccular aneurysm of the ascending aorta in a 5-year-old patient.

Saccular aneurysms of the aorta in childhood are rare, and the low incidence of aortic aneurysms among children limits our understanding of their aetiology and surgical indications. In this case report, we describe the successful surgical treatment of a 5-year-old boy with severe aortic valvular stenosis, supra-valvular aortic stenosis, and a large saccular aneurysm in the anterior wall of the ascending aorta, without any connective tissue disorder.

Strain Echocardiographic Evaluation of Myocardial Involvement in Patients with Continuing Chest Pain after COVID-19 Infection. / Avaliação Ecocardiográfica com Strain do Envolvimento Miocárdico em Pacientes com Dor Torácica Contínua após Infecção por COVID-19.

BACKGROUND: A new clinical manifestation called post or long coronavirus disease (p/l COVID) has walked into our lives after the acute COVID-19 phase. P/l COVID may lead to myocardial injury with subsequent cardiac problems. Diagnosing these patients quickly and simply has become more important due to the increasing number of patients with p/l COVID. OBJECTIVES: We compared strain echocardiography (SE) parameters of patients who suffered from atypical chest pain and had sequel myocarditis findings on cardiac magnetic resonance (CMR). We aimed to investigate the value of SE for detection of myocardial involvement in patients with p/l COVID. METHODS: A total of 42 patients were enrolled. Our population was separated into two groups. The CMR(-) group (n = 21) had no myocardial sequelae on CMR, whereas the CMR(+) group had myocardial sequelae on CMR (n = 21). The predictive value of SE for myocarditis was also evaluated by age-adjusted multivariate analysis. P values < 0.05 were considered statistically significant. RESULTS: When compared with left ventricular ejection fraction (LVEF), global longitudinal strain (GLS) and global circumferential strain (GCS) had a stronger relationship (LVEF, p = 0.05; GLS, p < 0.001; GCS, p < 0.001) with p/l COVID associated myocardial involvement. GLS < 20.35 had 85.7% sensitivity and 81% specificity; GCS < 21.35 had 81% sensitivity and 81% specificity as diagnostic values for myocardial sequelae detected with CMR. While there was no difference between the groups in terms of inflammatory markers (C-reactive protein, p = 0.31), a difference was observed between biochemical markers, which are indicators of cardiac involvement (brain natriuretic peptide, p < 0.001). CONCLUSION: SE is more useful than traditional echocardiography for making diagnosis quickly and accurately in order not to delay treatment in the presence of myocardial involvement.

FUNDAMENTO: Tem surgido uma nova manifestação clínica chamada pós-COVID ou COVID longa (COVID p/l) após a fase aguda da COVID-19. COVID p/l pode levar à lesão miocárdica com problemas cardíacos subsequentes. Diagnosticar esses pacientes de forma rápida e simples é cada vez mais importante devido ao número crescente de pacientes com COVID p/l. OBJETIVOS: Comparamos os parâmetros de ecocardiografia com strain (ES) de pacientes que apresentaram dor torácica atípica e achados de sequelas de miocardite na ressonância magnética cardíaca (RMC). Nosso objetivo foi investigar o valor da ES para detecção de envolvimento miocárdico em pacientes com COVID p/l. MÉTODOS: Foram incluídos um total de 42 pacientes. Nossa população foi separada em 2 grupos. O grupo RMC(-) (n = 21) não apresentou sequelas miocárdicas na RMC, enquanto o grupo RMC(+) apresentou sequelas miocárdicas na RMC (n = 21). O valor preditivo da ES para miocardite também foi avaliado por análise multivariada ajustada por idade. Valores de p < 0,05 foram considerados estatisticamente significativos. RESULTADOS: Quando comparado com a fração de ejeção do ventrículo esquerdo (FEVE), o strain longitudinal global (SLG) e o strain circunferencial global (SCG) tiveram uma relação mais forte (FEVE, p = 0,05; SLG, p < 0,001; SCG, p < 0,001) com envolvimento miocárdico associado à COVID p/l. SLG < 20,35 apresentou sensibilidade de 85,7% e especificidade de 81%; SCG < 21,35 apresentou sensibilidade de 81% e especificidade de 81% como valores diagnósticos para sequelas miocárdicas detectadas com RMC. Enquanto não houve diferença entre os grupos quanto aos marcadores inflamatórios (proteína C-reativa, p = 0,31), houve diferença entre os marcadores bioquímicos, que são indicadores de envolvimento cardíaco (peptídeo natriurético cerebral, p < 0,001). CONCLUSÃO: A ES é mais útil do que a ecocardiografia tradicional para diagnosticar com rapidez e precisão, a fim de não atrasar o tratamento na presença de envolvimento miocárdico.

Evaluation of Arrhythmia Prevalence, Management, and Risk Factors in Patients with Transcatheter and Surgically Closed Secundum Atrial Septal Defects.

OBJECTIVE: Atrial septal defect (ASD) accounts for 6-10% of all congenital heart disorders. Secundum ASD closure can be performed surgically or percutaneously. We aimed to identify the various arrhythmias that occur before, during, and after the procedure and evaluate their management. METHODS: The study included a total of 427 patients aged 0-18 years who underwent transcatheter or surgical closure of isolated secundum ASD between January 2008 and January 2020. Postoperative electrocardiogram (ECG) traces, intraoperative arrhythmias, and treatments were recorded for both groups. Echocardiography and ECG were evaluated at postoperative 1 week, 1, 3, and 6 months, and annually thereafter. RESULTS: After transcatheter closure, follow-up basal ECG showed incomplete right bundle branch block pattern in 21 patients and sinus rhythm in 229 patients. After surgical closure, incomplete right bundle branch block pattern was detected in 23 patients, complete right bundle branch block in 3 patients, and complete AV-block (Atrioventricular Block) pattern in 1 patient. The other 150 patients showed sinus rhythm. At least one postoperative follow-up Holter ECG record could be obtained for 104 patients in the transcatheter group and 96 patients in the surgical group. Of 104 patients who underwent transcatheter closure, 97 (93.3%) had normal Holter ECG findings and 7 (6.7%) had arrhythmia. Of the 96 patients who underwent surgical closure, 85 (88.5%) had normal Holter ECG traces and 11 (11.5%) had arrhythmia. There was no statistically significant difference in the frequency of arrhythmia (P = 0.164). CONCLUSION: The higher frequency of arrhythmia in adult studies compared to the pediatric age group once again demonstrates the importance of early diagnosis and treatment of ASD in childhood. The similar incidence of arrhythmia in both groups supports the safety and effectiveness of both closure methods in eligible patients.

Ventricular septal defect closure using radial incision of the tricuspid valve for exposure: is it really necessary?

AIM: To evaluate the effects of radial incision of the tricuspid valve in patients who had undergone ventricular septal defect (VSD) closure. METHODS: Overall 173 patients were included in this study between 2012 and 2019. In 44 individuals, a tricuspid valve radial incision (TVRI) was included in the surgical process. RESULTS: There were no mortalities. The demographic data did not differ between the groups. The mean ages of the TVRI and non-TVRI groups were 2.92 ± 3.88 and 2.69 ± 2.80 years, respectively. There were no significant differences between the groups in terms of mean duration of cardiopulmonary bypass aortic cross-clamp, postoperative intubation time and intensive care unit stay. Mild tricuspid valve regurgitation was detected in only two patients in the TVRI and six patients in the non-TVRI groups. There was no tricuspid valve stenosis and all patients were in New York Heart Association functional class 1. CONCLUSION: This technique, which can facilitate exposure and closure of VSDs, did not compromise the tricuspid valve function at mid-term, therefore proving to be safe.

Endovascular treatment of aortic coarctation with a novel BeGraft aortic stent in children and young adults: a single-centre experience with short-term follow-up results.

OBJECTIVES: We present our experience and outcomes with the BeGraft in the treatment of aortic coarctation in a predominantly paediatric population. METHODS: This study includes a retrospective analysis of patients who had Begraft aortic stent implantation between 2018 and 2020 from a single centre. RESULTS: The BeGraft aortic stent was used in 11 patients (7 males, 4 females) with a median age of 14 (13-21) years and a median weight of 65 (46-103) kg. Coarctation was native in five patients and recurrent in six patients. Median stent diameter and length were 16 mm and 38 mm, respectively. The median peak-to-peak pressure was 30 (12-55) mmHg before the procedure and 5 (0-17) mmHg after the procedure. The stenting procedure was successful in 10 of the 11 patients. Stent migration to the abdominal aorta occurred on post-procedure day 1 in the 21-year-old patient, who had previously undergone surgical closure of the ventricular septal defect and balloon angioplasty for coarctation. After repositioning failed, the stent was safely fixed in the abdominal aorta. Strut distortion also occurred during balloon retrieval in one patient, but no aneurysm or in-stent restenosis was observed at 1-year follow-up. The patients were followed for a median of 14 (4-25) months and none required redilation. CONCLUSIONS: Our initial results demonstrated that the BeGraft aortic stent effectively reduced the pressure gradient in selected native and recurrent cases. Despite advantages such as a smaller sheath and low profile, more experience and medium- to long-term results are needed.

Spontaneous right coronary artery dissection in a patient with COVID-19 infection: A case report and review of the literature.

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) is responsible for the global coronavirus disease 2019 (COVID-19) pandemic. Although the virus predominantly causes respiratory system infection, recent reports have shown that it is also associated with many cardiovascular complications. It has been reported that COVID-19 may cause myocarditis, type 1 and 2 acute myocardial infarction, and thrombotic complications.[1] Spontaneous coronary artery dissection (SCAD) is a rare form of coronary artery disease that has recently been associated with COVID-19 in a few case reports. The case reported here is of COVID-19 associated SCAD in a patient with no history of cardiovascular disease.

Gender-related clinical and management differences in patients with chronic heart failure with reduced ejection fraction.

AIM: Gender-related differences have been described in the clinical characteristics and management of patients with chronic heart failure with reduced ejection fraction (HFrEF). However, published data are conflictive in this regard. METHODS: We investigated differences in clinical and management variables between male and female patients from the ATA study, a prospective, multicentre, observational study that included 1462 outpatients with chronic HFrEF between January and June 2019. RESULTS: Study population was predominantly male (70.1%). In comparison to men, women with chronic HFrEF were older (66 ± 11 years vs 69 ± 12 years, P < .001), suffered more hospitalisations and presented more frequently with NYHA class III or IV symptoms. Ischaemic heart disease was more frequent in men, whereas anaemia, thyroid disease and depression were more frequent in women. No difference was seen between genders in the use rate of renin-angiotensin system inhibitors, beta-blockers, mineralocorticoid receptor antagonists, or ivabradine, or in the proportion of patients achieving target doses of these drugs. Regarding device therapies, men were more often treated with an implantable cardioverter-defibrillator (ICD) and women received more cardiac resynchronisation therapy. CONCLUSION: In summary, although management seemed to be equivalent between genders, women tended to present with more symptoms, require hospitalisation more frequently and have different comorbidities than men. These results highlight the importance of gender-related differences in HFrEF and call for further research to clarify the causes of these disparities. Gender-specific recommendations should be included in future guidelines in HFrEF.

Adherence to guideline-directed medical and device Therapy in outpAtients with heart failure with reduced ejection fraction: The ATA study.

OBJECTIVE: Despite recommendations from heart failure guidelines on the use of pharmacologic and device therapy in patients with heart failure with reduced ejection fraction (HFrEF), important inconsistencies in guideline adherence persist in practice. The aim of this study was to assess adherence to guideline-directed medical and device therapy for the treatment of patients with chronic HFrEF (left ventricular ejection fraction ≤40%). METHODS: The Adherence to guideline-directed medical and device Therapy in outpAtients with HFrEF (ATA) study is a prospective, multicenter, observational study conducted in 24 centers from January 2019 to June 2019. RESULTS: The study included 1462 outpatients (male: 70.1%, mean age: 67±11 years, mean LVEF: 30%±6%) with chronic HFrEF. Renin-angiotensin system (RAS) inhibitors, beta-blockers, mineralocorticoid receptor antagonists (MRAs), and ivabradin were used in 78.2%, 90.2%, 55.4%, and 12.1% of patients, respectively. The proportion of patients receiving target doses of medical treatments was 24.6% for RAS inhibitors, 9.9% for beta-blockers, and 10.5% for MRAs. Among patients who met the criteria for implantable cardioverter-defibrillator (ICD) and cardiac resynchronization therapy (CRT), only 16.9% of patients received an ICD (167 of 983) and 34% (95 of 279) of patients underwent CRT (95 of 279). CONCLUSION: The ATA study shows that most HFrEF outpatients receive RAS inhibitors and beta-blockers but not MRAs or ivabradin when the medical reasons for nonuse, such as drug intolerance or contraindications, are taken into account. In addition, most eligible patients with HFrEF do not receive target doses of pharmacological treatments or guideline-recommended device therapy.

Decreased heart rate recovery may predict a high SYNTAX score in patients with stable coronary artery disease.

An impaired heart rate recovery (HRR) has been associated with increased risk of cardiovascular events, cardiovascular, and all-cause mortality. However, the diagnostic ability of HRR for the presence and severity of coronary artery disease (CAD) has not been clearly elucidated. Our aim was to investigate the relationship between HRR and the SYNTAX (SYNergy between percutaneous coronary intervention with TAXus and cardiac surgery) score in patients with stable CAD (SCAD). A total of 406 patients with an abnormal treadmill exercise test and ≥50% coronary stenosis on coronary angiography were included. The HRR was calculated by subtracting the HR in the first minute of the recovery period from the maximum HR during exercise. The SYNTAX score ≥23 was accepted as high. Correlation of HRR with SYNTAX score and independent predictors of high SYNTAX score were determined. A high SYNTAX score was present in 172 (42%) patients. Mean HRR was lower in patients with a high SYNTAX score (9.8 ± 4.5 vs. 21.3 ± 9, p < 0.001). The SYNTAX score was negatively correlated with HRR (r: -0.580, p < 0.001). In multivariate logistic regression analysis, peripheral arterial disease (OR: 13.3; 95% CI: 3.120-34.520; p < 0.001), decreased HRR (OR: 0.780; 95% CI: 0.674-0.902; p = 0.001), peak systolic blood pressure (OR: 1.054; 95% CI: 1.023-1.087; p = 0.001), and peak HR (OR: 0.950; 95% CI: 0.923-0.977; p < 0.001) were found to be independent predictors of a high SYNTAX score. Our results showed that HRR is significantly correlated with the SYNTAX score, and a decreased HRR is an independent predictor of a high SYNTAX score in patients with SCAD.

Preparation and characterization of non-viral gene delivery systems with pEGFP-C1 Plasmid DNA

ABSTRACT In recent years, non-viral delivery systems for plasmid DNA have become particularly important. They can overcome the disadvantages of viral systems such as insertional mutagenesis and unpredicted immunogenicity. Some additional advantages of non-viral gene delivery systems are; good stability, low cost, targetability, delivery of a high amount of genetic materials. The aim of the study was to develop novel non-viral nanosystems suitable for gene delivery. Two formulations were developed for this purpose: water-in-oil microemulsion (ME) and solid lipid nanoparticles (SLN). The microemulsion was composed of Peceol, Tween 80, Plurol oleique, ethanol and water. The SLN was consisting of Precirol, Esterquat-1 (EQ1), Tween 80, Lecithin, ethanol and water. Characterization studies were carried out by measuring particle size, zeta potential, viscosity and pH. TEM imaging was performed on SLN formulations. Protection against DNase I degradation was examined. Cytotoxicity and transfection efficacy of selected formulations were tested on L929 mouse fibroblast cells. Particle sizes of complexes were below 100 nm and with high positive zeta potential. TEM images revealed that SLNs are spherical. The SLN:DNA complexes have low toxicity and good transfection ability. All results showed that the developed SLN formulations can be considered as suitable non-viral gene delivery systems.

A Complication following the Transcatheter Closure of a Muscular Ventricular Septal Defect.

Today, congenital heart diseases may be treated without surgery through advances in interventional cardiology. However, complications such as infection and thrombus formation may develop due to foreign materials used during these procedures. Surgical intervention may be required for the removal of the device utilized for the procedure. In this case report, we present the surgical treatment of a residual ventricular septal defect (VSD) that had developed in a 6-year-old patient with an apical muscular VSD closed with the Amplatzer muscular VSD device. The patient was admitted to the emergency room with complaints of abdominal pain and high fever 5 days after discharge without any cardiac symptoms. When she arrived at our clinic, she had a heart rate of 95 bpm, blood pressure of 110/70 mmHg, and temperature of 38.5ºC. Examinations of the other systems were normal, except for a 3/6 pan-systolic murmur at the mesocardiac focus on cardiac auscultation. Echocardiography showed a residual VSD, and the total pulmonary blood flow to the total systemic blood flow ratio (Qp/Qs) of the residual VSD was 1.8. In the operating room, the Amplatzer device was removed easily with a blunt dissection. The VSD was closed with an autologous fresh pericardial patch. Following the pulmonary artery debanding procedure, the postoperative period was uneventful. The condition of the patient at the time of discharge and in the first postoperative month's follow-up was good. There was no residual VSD or infection.

Right juxtaposition and a tunnel between the atrial appendages in a patient with atrial septal defect and pulmonary valve stenosis.

A 13-month-old boy with a diagnosis of atrial septal defect and pulmonary valve stenosis was admitted for corrective surgery. Right juxtaposition of the atrial appendages with a tunnel between the atrial appendages was detected during the surgery. The patient was operated successfully and had an uneventful recovery. Once right juxtaposition of the atrial appendages has been identified, the possibility of a "tunnel" communication between the appendages must be considered and ruled out.

Evaluation of the effects of radiotherapy to the chiasm and optic nerve by visual psychophysical and electrophysiologic tests in nasopharyngeal carcinoma.

PURPOSE: To evaluate the effects of high-dose radiotherapy (RT) to the chiasm and optic nerves in locally advanced nasopharyngeal carcinoma patients by visual psychophysical and electrophysiologic tests. METHODS AND MATERIALS: A series of visual tests, including visual evoked potentials (VEPs), contrast sensitivity, and visual field and visual acuity tests, were administered to 27 patients with locally advanced (T4) nasopharyngeal carcinoma who had undergone RT to high doses 6 to 74 months previously. As a control group, the same tests were administered to 40 unirradiated patients who had been referred to the ophthalmology department for any reason. RESULTS: The median values of VEP latency, VEP amplitude, and contrast sensitivity and the rate of visual field defect were significantly worse in the RT group (p = 0.06, p <0.001, p <0.001, and p = 0.005, respectively). No dose-response relationship was found in any tests when 50 Gy was the cutoff value. However, a positive correlation between the interval after RT and VEP latency (r = 0.406, p = 0.003) and a negative correlation between the interval and contrast sensitivity (r = -0.499, p <0.001) was noted; no correlation could be established regarding VEP amplitude and the interval after RT. CONCLUSION: Radiation-induced injury to the anterior visual pathways could result in an increase in VEP latency and a decrease in VEP amplitude and contrast sensitivity. This injury seems to be a continuous process developing with time.