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Background: Atrial fibrillation (AF) is a cardiac complication commonly associated with COVID-19 infection, especially in severe cases. The sedative agent dexmedetomidine is known to cause bradycardia. In this study, we are testing whether dexmedetomidine could reduce the occurrence of AF in mechanically ventilated COVID-19 patients. Method(s): This prospective trial included 144 patients who were randomly allocated to one of two groups: Group C patients were sedated with propofol and fentanyl. Group D patients were sedated with the same medications in addition to dexmedetomidine infusion. Result(s): Demographic, clinical, and cardiac characteristics of all patients did not significantly differ between the two groups. The duration of intensive care unit (ICU) stay was comparable between the two groups. However, both propofol and fentanyl consumption significantly declined in Group D. The number of AF attacks showed a significant decline in association with dexmedetomidine administration (mean = 12.5% in Group D vs. 29.2% in Group C). Dexmedetomidine also reduced the amount of required electrical cardioversion episodes. Additionally, antiarrhythmic medication needed reduced significantly in Group D. Mortality rates did not differ between the two study groups (58.3% and 63.8% in Groups D and C, respectively). Conclusion(s): Dexmedetomidine is associated with a significant reduction in the burden of AF in patients with severe COVID-19 infection, manifested by fewer AF attacks, the need for electrical cardioversion shocks, and the consumption of antiarrhythmic medication without impact on mortality.Copyright © 2023 The Author(s). Published by Informa UK Limited, trading as Taylor & Francis Group.
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Case Presentation: Term male infant born to SARS-CoV-2 positive mother with infant testing negative. ECG for perinatal bradycardia revealed ventricular pre-excitation. Echocardiogram showed asymmetric LV hypertrophy with prominent trabeculations, subaortic narrowing with no pressure gradient, and normal biventricular systolic function. Rapid increase in RV pressure estimates and NT-proBNP in first week if life concerning for diastolic dysfunction. Anti-arrhythmic therapy initiated for SVT with subsequent resolution. Later, developed progressive LV dilation and systolic dysfunction. Myocardium showed regions resembling non-compaction and others concerning for infiltrative process. Cardiac MRI showed no obvious tumors, but rhabdomyomas could not be ruled out given similar appearance to myocardium. Due to worsening heart failure, everolimus therapy initiated to target potential rhabdomyomas while awaiting genetic testing for tuberous sclerosis. Subaortic narrowing and LV hypertrophy improved within days, and LV appearance became more consistent with non-compaction. Genetic testing revealed a TSC2 gene variant consistent with tuberous sclerosis. Systolic function improved, and patient discharged on afterload reduction. Echocardiogram 6 months post-discharge shows continued LV dilation and mild systolic dysfunction. Discussion(s): Although outflow obstruction and arrhythmias are common with cardiac rhabdomyomas and can cause dysfunction, our patient developed progressive dysfunction in the absence of outflow tract gradient or prolonged arrhythmia. As rhabdomyomas subsided, it became clearer that he had an underlying cardiomyopathy. We suspect that rhabdomyomas in the setting of abnormal myocardium led to abnormalities in myocardial contractility and compliance causing combined systolic and diastolic dysfunction. After complete resolution of rhabdomyomas, cardiac function has improved. However, he continues to have ventricular dilation and mild dysfunction attributable to cardiomyopathy. It is unlikely that mother's SARS-CoV-2 infection played a role as infant tested negative and clinical picture was not consistent with myocarditis.
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Background and Importance Nirmatrelvir/ritonavir (PAXLOVID) is a recently approved drug to prevent progression in high-risk COVID-19-infected patients. Aim and Objectives To evaluate prescribing and dispensing of PAXLOVID and the proportion of patients with hospitalisation or death from any cause at 28 day. Material and Methods Descriptive, retrospective, observational study carried out between May and August 2022 in a secondlevel hospital. All patients with PAXLOVID prescription were selected. Sources of information were: electronic medical records and the prescription programme. The Variables analysed were: sex, age, risk factors, indications, interactions, dispensation (yes/no) and final treatment received. Risk factors were evaluated with our country's drug regulatory agency (DRA) recommendations to assesed the indication. Efficacy was assessed by the proportion of patients admitted to hospital and 28-day mortality. Results PAXLOVID was prescribed to 34 patients, 14 (41.2%) were women. The median age was 76.3 years old [RIQ 25.4]. Main indications for PAXLOVID were: to be undergoing treatment with myelotoxic chemotherapy (32.3%), corticosteroids or other immunosuppressants (29.4%);being over 80 years of age and presenting specific Risk factors (14.7%) and primary immunodeficiency (5.8%). 21 patients (61.8%) had some relevant interaction with their usual medication. The most frequent interactions were with statins (23.5%), analgesics (20.6%), oral anticoagulants (12%), antiarrhythmics (8.8%), antiplatelet drugs (5.8%), antidepressants (5.8%) and antidiarrhoeals (5.8%). After Validation by the Pharmacy Service, 11 patients (32.4%) did not receive PAXLOVID, 5 because they did not meet DRA criteria, 2 because their glomerular filtration rate was less than 30 ml/min and 4 because they had incompatible interactions. 4 patients finally received 3 days-remdesivir. Among patients who received PAXLOVID, 82.26% received full doses, with 4 patients (11.76%) requiring adjustment for renal impairment. 3 patients (13%) were hospitalised in the first month, none died. Conclusion and Relevance The main indications for which PAXLOVID was prescribed were patients undergoing chemotherapy and/or immunosuppressive treatments. Interactions with PAXLOVID were frequent and in some cases limited treatment. Validation by Pharmacy Service prevented a considerable number of patients from receiving PAXLOVID when it was no-indicated or when they had insurmountable interactions, also allowed patients to receive the dose adjusted for renal impairment. PAXLOVID was effective in avoiding hospital admission and mortality in the majority of patients.
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Background: The outbreak of a new coronavirus in China in 2019 (COVID-19) caused a global health crisis. Objective(s): This study was performed to investigate the effect of different underlying diseases on mortality in patients with COVID-19. Method(s): This retrospective cohort study was performed on COVID-19 patients admitted to the Shahid Rahimi and Sohada-ye Ashayer teaching hospitals in Khorramabad, Iran, from 2019 to 2021. Data on disease severity, clinical manifestations, mortality, and underlying disorders were collected and analyzed using the SPSS software version 22 at a 95% confidence interval and 0.05 sig-nificance level. Result(s): The study included 9653 men (48%) and 10332 women (52%). Patients with chronic kidney diseases, cancer, chronic obstruc-tive pulmonary disease, hypertension, cardiovascular disease, and diabetes were at higher mortality risk than those without these underlying diseases, respectively. However, there was no significant relationship between asthma and mortality. Also, age > 50 years, male gender, oxygen saturation < 93 on admission, and symptoms lasting <= 5 days were associated with increased mortality. Conclusion(s): Since patients with underlying diseases are at higher mortality risk, they should precisely follow the advice provided by health authorities and receive a complete COVID-19 vaccination series.Copyright © 2022, Author(s).
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Introduction: Atrial fibrillation (AF) is one of the most common forms of arrhythmia in the clinic. There are about 10 million AF patients in China, of which 1/3 are paroxysmal AF, and the remaining 2/3 are persistent or permanent AF. Long-term AF impairs cardiac function and leads to heart failure and thromboembolism. Moreover, AF increases the risk of mortality and ischemic stroke. Drug therapy and radiofrequency catheter ablation (RFCA) are still the mainstream treatment for AF patients. However, drug therapy has its drawbacks because of the high recurrence rate and side effects. Therefore, the current antiarrhythmic drugs could not meet all the clinical needs of patients with AF. RFCA is superior to antiarrhythmic drugs in maintaining sinus rhythm, improving symptoms and exercise tolerance, and improving quality of life. The role of RFCA in the treatment of persistent AF has gradually been recognized and affirmed. Although RFCA has been progressively used in the treatment of AF, there is still a high recurrence rate of AF after RFCA, especially in patients with persistent AF. Hence, it is meant to solve the high recurrence rate of AF after RFCA. Shensong Yangxin (SSYX) capsule has been proven to treat arrhythmia both in animal studies and clinical research. SSYX capsule could regulate multi-ion channels, improve cardiomyocyte metabolism and regulate autonomic nervous function. In addition, randomized, double-blind, multicenter clinical research indicated that the SSYX capsule exhibited good clinical efficacy in treating ventricular premature beats and paroxysmal AF. However, the effect of SSYX on recurrence after RFCA for patients with persistent AF remains unclear. High-level randomized controlled trials (RCTs) could offer clinicians high-quality evidence regarding the usage of SSYX capsule, especially in persistent AF patients who received RFCA. Hence, the RCTs aim to evaluate the effect of SSYX capsules on the prognosis in patients with persistent AF after RFCA through multicenter, double-blind RCTs. Method(s): This trial will be conducted with a total of 920 participants diagnosed with persistent AF who received RFCA. The participants will be randomized (1:1) into groups receiving either SSYX or Placebo for 1 year. The primary endpoint includes the recurrence of AF within 1 year after RFCA. The secondary outcome measures include changes of AF load at 3 months, 6 months, 9 months, and 1 year after treatment, the time of first atrial flutter/AF, the incidence of cardioversion 1 year after treatment, changes of transthoracic echocardiographic parameters 1 year after treatment, the incidence of stroke and thromboembolism at 6 months and 1 year after treatment, the score of SF-36 within 1 year after treatment. Application: The trial is ongoing. The trial started in September 2019 and recruiting patients. Data collection will be completed after all participants have completed the treatment course and follow-up assessments (expected in 2022, pending COVID-19). Next Steps/Future: The SS-ADJUST study is a randomized control study of TCM in persistent AF after RFCA. It will determine the place of SSYX capsule as a new treatment approach and provide additional and innovative information regarding TCM and the specific use of SSYX in persistent AF after RFCA.
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Background Legionella pneumonia is a rare cause of myocarditis. Case 64-y.o male with CAD and PCI to LAD, DM and HTN presented to ER with mental status changes. On exam he was febrile and hypoxic.Presenting rhythm was Afib with frequent bouts of sustained and non-sustained stable posteroseptal VT treated with amiodarone and mexilitene. With right lung infiltrate on CXR and elevated WBC count, antibiotics were initiated for pneumonia. SARS COV-2 Ag and Influenza A & B was negative. Urine Ag for legionella was positive and was promptly treated with Levofloxacin. Coronary angiogram prior to discharge showed non-obstructive CAD. Decision-making Legionnaires' disease with myocarditis was suspected. Patient underwent CMR with late gadolinium enhancement (LGE) and Rest 82Rb perfusion and 18F-FDG PET/CT with high-fat dietary preparation scan for evaluation of legionella myocarditis. CMR revealed LVEF of 46%, with LGE and PET findings as described in the Figure. He was initiated on solumedrol for ongoing inflammation after completion of antibiotic therapy for Legionella pneumonia. Conclusion Our case highlights a systematic approach to differential diagnosis and use of multimodality imaging in legionella myocarditis presenting with dual chamber arrhythmia. There was good correlation between LGE inflammation/scar location and origin of VT, as well as active inflammation demonstrated by FDG PET imaging. The patient was successfully treated with antibiotics, steroids and anti-arrhythmic drugs. [Formula presented]Copyright © 2023 American College of Cardiology Foundation
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Background: During the frst months of the Sars-CoV-2 pandemic, antimalarial drugs were the central axis of the treatment of patients with acute respiratory infection. After that, several studies reported a risk of prolongation of corrected QT interval (QTc) at the electrocardiogram (ECG). Historically, these drugs, have been the common denominator in the treatment of patients with Systemic Lupus Erythematosus (SLE). Objectives: To analyze the possible relationship between the use of antima-larial drugs ant the electrocardiographic alterations in patients diagnosed with SLE. Methods: Cross-sectional study in patients diagnosed with SLE (SLICC 2012). In all of them, we performed a 12-lead ECG at rest. We measured the QT interval: manually and automatically, ant its correction was made according to the Hodge formule (QTc). Results: 91 patients diagnosed with SLE were included in the study. Of the total of patients included in the study, 64 were in current treatment with an antimalar-ial drug, with a mean of 9.09 (5.73) years of treatment, and a mean cumulative dosage of 813.16 (436.12) gr. Of the patients on current treatment with antimalarial drugs, 4.69% had a prolonged QTc, compared to 3.7% of the patients without current treatment with these drugs. We analyzed the possible relationship between the QTc interval, the current treatment with antimalarial drugs, and the cumulated dosage of this medication. We corrected the lineal regression models by the years of disease evolution, the presence or absence of known heart disease, the women gender, and other treatments such as antiarrhythmics or beta-blockers. We found a statistically signifcant association between taking antimalarial drugs and the elongated QTc interval (p= 0,001). Nevertheless, in the multivariate analysis, we did not found a signifcant relationship between the ECG alterations and the treatment with antimalarial drugs. Conclusion: In our study, we did not observe a direct relationship between the intake of antimalarial drugs and the alteration of the corrected QT interval.
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Background: Arterial hypertension has been described as one of the main risk factors for poor prognosis in Covid-19. In this context, the role of angiotensin-converting enzyme 2 (ACE2) in this infection has been studied, with studies showing how this enzyme acts as a functional receptor for SARS-CoV-2, favoring the penetration of the virus into the cell. The main objective of this work is to study the impact of chronic antihypertensive treatment in a cohort of SARS-CoV-2 positive patients with arterial hypertension, as well as clinical outcomes during hospitalization. Method: Single-center observational retrospective cohort study conducted at a tertiary level university hospital from 1st March 2020 to 31st May 2020. All adult patients admitted with a diagnosis of COVID-19 and a history of arterial hypertension on chronic treatment with an antihypertensive drug during the three months prior to contracting the infection were included. For the analysis, patients were divided into three groups according to the chronic antihypertensive treatment they were receiving: angiotensin-converting enzyme inhibitors (ACE inhibitors), angiotensin II receptor antagonists (ARB) or other treatment, excluding those patients who during the three months prior to the start of the study had been on concomitant treatment with ACE inhibitors and ARB, as well as those on treatment with more than four antihypertensive drugs. Results: A total of 475 cases with positive PCR for SARS-CoV-2 cases had hypertension as an associated comorbidity on antihypertensive treatment in the three months prior to admission. The mean age of this cohort of patients was 77.05 (SD 10.95) years, most of them male (56.8%) Regarding the prolonged length of stay variable, 127 patients (26.7%) were admitted for 14 days or more, with no statistically significant differences between the three groups. For patients admitted to the Intensive Care Unit (ICU) (29 patients, 6.1%) no differences were observed between the three study groups either.Regarding the outcome variable, all-cause in-hospital mortality, no statistically significant differences were observed between the groups (p = 0.836). Conclusions: Patients admitted with SARS-CoV2 respiratory infection with a diagnosis of hypertension and pre-admission treatment with an antihypertensive drug showed no statistically significant differences in mortality between those hypertensive patients who received renin-angiotensin-aldosterone system (RAAS) inhibitor antihypertensive drugs and those who received other antihypertensive treatments.
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Introduction: The COVID pandemic has driven an expansion of telemedicine. Telemedicine may be well-suited for pediatric electrophysiology (EP) outpatient consultations. However, an ECG forms part of the standard of care and there is no established strategy for performing a remote 12-lead ECG. Hypothesis: The use of mail-out 12 lead ECG in a pediatric cardiology telemedicine environment is feasible. Methods: Between Nov 2020 and June 2021, select patients with telemedicine EP consultation were offered a mail-out 12 lead ECG (QT Medical, Diamond Bar, CA). The equipment was sent to the patient's home with technical support from both company and the cardiac clinic. ECGs were read and reported on the electronic health record. ECG quality was independently rated by 2 reviewers. Patient experience was recorded via survey (Qualtrics, Seattle, WA). Results: A total of 146 ECG recordings were transmitted in 31 patients [age 13 ± 5 years, 11 female (35%)]. Indications were prior arrhythmia [24 (77%)] or new cardiac symptoms [7 (23%)]. Prior arrhythmia diagnoses included WPW, paced rhythm, Brugada syndrome, ventricular tachycardia, complete heart block, long QT and monitoring of introduction of anti-arrhythmic medication. A median 3 (IQR 3-6) ECGs were recorded per patient. All patients had recordings suitable for clinical decision-making [21 had an 'excellent' recording (68%), 10 'good' (32%), Figure 1]. Total time to perform the ECG (including app set up, application of device and recording transmission) was 46 ± 18 min. 77% found it 'easy' or 'extremely easy' to perform, and 80% were 'confident' or 'moderately confident' in the recording. Median travel time to clinic saved was 62 min (IQR 30-151 min). However, only 33% would prefer to perform the ECG at home rather than in clinic Conclusions: Clinically acceptable pediatric 12-lead ECGs may be performed at home by the patient and family. This technology may be considered for adjunctive use with telemedicine consultation in pediatric EP.
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Coronavirus disease-2019 (COVID-19) has impacted the global population, leading to a pandemic, the scale of which the world has never experienced before. This novel coronavirus not only involves the respiratory system, but also affects the heart, leading to significant morbidity and mortality. Arrhythmias in COVID-19 are increasingly being documented and seem to have a prognostic significance, especially in critically ill patients. In patients with COVID-19, a variety of arrhythmias have been reported, ranging from the benign to potentially life-threatening. Multiple mechanisms, such as myocarditis, hypoxia, electrolyte disturbances and QT interval-prolonging drugs (e.g. hydroxychloroquine), are responsible for arrhythmias in patients with COVID-19. The prevalence of cardiac arrhythmias in patients with COVID-19 ranges from 3.6% to 60%, with sinus tachycardia being the most common rhythm abnormality. Other rhythm abnormalities, such as sinus bradycardia, atrial arrhythmias and complete heart block, have also been reported. Malignant ventricular arrhythmias, especially in patients with COVID-19 with multiple comorbidities, portend a bad prognosis. Additionally, the use of QT interval-prolonging drugs, such as hydroxychloroquine or azithromycin, increases the risk of torsades de pointes. Hence, there is a need for continuous rhythm monitoring, with prompt recognition of arrhythmias in critically ill patients and those on QT-prolonging medications. Management of these arrhythmias is similar to those in patients without COVID-19, with a focus on correcting reversible causes and maintaining haemodynamic stability.
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Background: The COVID-19 pandemic accelerated adoption of a telehealth model to replace outpatient visits. We studied quality indicators and clinical outcomes associated with virtual visits in comparison to in-person ambulatory visits for patients with atrial fibrillation (AF) seen by electrophysiology providers. Methods: Quality indicators and outcomes for patients with primary diagnosis of AF seen by electrophysiology providers (6 physicians and 4 nurse practitioners) for the 12 week period of March 22-June 13, 2020 were compared with those from the 12 week period of March 24-June 15, 2019. Result: We identified 2340 clinic visits for AF (1081 in 2019 and 1259 in 2020). Telehealth was not used in 2019, and was used in 90.5% of the 2020 visits. On multivariate analysis during 120 days following each encounter, there was no difference in hospital admissions between 2019 and 2020 (OR 0.89;95% CI 0.69-1.14;p=0.3624), and there was trend towards lower emergency department visits in 2020 compared with 2019 (OR 0.77;95% CI 0.6-1;p=0.0509). There were 36 deaths at 120 days, mortality was similar in 2020 as compared with 2019 (OR 1.5;95% CI 0.74-3.03;p=0.2601). There was no difference in completed procedures including permanent pacemakers, cardiac resynchronization therapy devices, implantable cardioverter-defibrillators and catheter ablations. There was a significant difference in anticoagulant (OR 0.71;95% CI 0.52-0.99;p=0.0412) and antiarrhythmic (OR 0.78;95% CI 0.61-0.99;p=0.0384) dose adjustment or new prescriptions in 2019 compared with 2020. Conclusion: Telehealth was associated with similar intermediate-term clinical outcomes when compared to traditional ambulatory encounters. However, adjusting or providing new prescriptions for anticoagulant or antiarrhythmic medications was more common with in-person than with virtual visits.