Annals of Noninvasive Electrocardiology最新文献

The incidence and mortality rates of acute pulmonary embolism (APE) are high in clinical emergencies, making early diagnosis and risk stratification crucial. Electrocardiogram (ECG) plays a significant role in guiding the diagnosis and differential diagnosis of pulmonary embolism. Acute pulmonary embolism can present with various ECG manifestations. The presence of pulmonary hypertension and increased right ventricular load in pulmonary embolism can lead to T wave inversion in the right cardiac lead. Additionally, some patients may exhibit a prolonged QT interval, which is associated with the pathophysiological processes resulting from both pulmonary hypertension and myocardial ischemia.

This paper presents a unique case of successful implementation of left bundle branch pacing (LBBP) in a pediatric patient with third-degree atrioventricular block following tricuspid valve replacement for a complex Ebstein anomaly. The procedure was performed under real-time recording technique, and resulted in the resolution of the patient's symptoms. This case underscores the feasibility and potential benefits of LBBP in pediatric patients, particularly in those with complex congenital heart conditions and following valve replacement surgery. The successful implementation of LBBP in this case provides valuable insights and a reference for similar cases in the future.

A 40-year-old man, after accidentally ingesting aconitine in a herbal remedy, suffered severe poisoning symptoms and was diagnosed with multiple arrhythmias. He quickly received veno-arterial extracorporeal membrane oxygenation (VA-ECMO) and hemoperfusion in the ICU, along with continuous renal replacement therapy (CRRT) to stabilize his internal environment. The treatment controlled the arrhythmias, restored heart function, and alleviated acidosis. The patient was discharged feeling well after 9 days. This combined therapy is valuable for severe aconitine poisoning, especially when specific antidotes are lacking, as it provides critical life support and effectively removes toxins.

This article describes a 44-year-old female with Fabry disease presenting with a 7-year history of chest discomfort, extremity pain, and hypohidrosis. ECG revealed sinus bradycardia (52 bpm), a short PR interval (100 ms) with a delta wave, and a QRS complex (126 ms) showing a complete right bundle branch block. T-wave inversion and ST-segment depression were observed in leads I, AVL, II, aVF, and V2–V6. Genetic testing confirmed Fabry disease (GLA: c.700_702del). Short PR interval with left ventricular hypertrophy (LVH) poses a diagnostic challenge, requiring advanced imaging and genetic testing to differentiate Fabry disease from other cardiomyopathies.

This article describes a woman who presented to the hospital with recurrent chest pain. The electrocardiogram revealed positive and negative biphasic T waves in the anterior and inferior leads, which subsequently deepened. Upon recurrence of chest pain, the T waves reverted to upright. Coronary angiography indicated the presence of three-vessel coronary artery disease. The occurrence of Wellens' T wave sign in the precordial leads frequently suggests left anterior descending artery disease, while the presence of positive and negative biphasic T waves in the inferior wall leads may also indicate lesions in the right coronary artery or left circumflex artery.

Radiofrequency ablation (RFA) is a safe and effective treatment for patients experiencing ventricular and atrial tachyarrhythmias. While complications after RFA are generally rare, the occurrence of coronary artery (CA) injury, albeit infrequent, can have significant clinical implications. Given the proximity of CAs to common ablation sites, understanding the interplay between RFA and CA perfusion pathophysiology is paramount. Although previous studies have discussed the presentation and outcomes of CA injury post-ablation, a comprehensive review consolidating the mechanisms of CA injury following RFA remains absent in the cardiology literature. In this review, we conducted an extensive literature search spanning the past three decades to explore the link between the biophysics of RFA and CA perfusion pathophysiology, focusing on injury mechanisms. We delve into RFA lesion pathology, elucidate the mechanisms of CA injury resulting from RFA, and examine factors influencing lesion formation, such as convective cooling and the “shadow effect.” Furthermore, we outline methods to mitigate CA injury post-RFA and propose novel research avenues to optimize lesion formation and ensure the safety of arrhythmia treatments, particularly in cases where tissue ablation is performed close to CAs.