Heart Rhythm In Patients Research Articles

Event-Rekorder

Event or loop recorders monitor heart rhythm using discontinuous ECG storage which enables them to obtain a correlation between symptoms and the underlying heart rhythm in patients with infrequent, short-lasting episodes. External event recorders with intermittent monitoring, i.e., with electrodes within the device, are suitable for patients with palpitations or tachycardia who remain conscious. External event recorders with continuous monitoring are tolerated by patients for a few weeks and have a limited diagnostic impact in patients with recurrent syncope. The implantable loop recorder (ILR) monitors heart rhythm for one year and after patient-triggered or automatic activation stores a one-lead ECG up to 42 minutes prior to device activation. The diagnostic benefit of ILR in comparison to conventional approaches has been demonstrated in randomised studies. Furthermore, an ILR identifies patients with recurrent syncope of unknown origin in whom a pacemaker implantation can avoid further episodes. Additional possible indications are the monitoring of atrial fibrillation, the diagnostics of infrequent palpitations and patients with seizures.

Abnormal Heart Rhythm in Patients with Leukemia Treated with Arsenic Trioxide

Summaries for Patients5 December 2000Abnormal Heart Rhythm in Patients with Leukemia Treated with Arsenic TrioxideSearch for more papers by this authorAuthor, Article, and Disclosure Informationhttps://doi.org/10.7326/0003-4819-133-11-200012050-00007 SectionsAboutFull TextPDF ToolsAdd to favoritesDownload CitationsTrack CitationsPermissions ShareFacebookTwitterLinkedInRedditEmail What is the problem and what is known about it so far?Acute promyelocytic leukemia (APL) is a cancer of the blood. Arsenic trioxide is effective in treating cases of APL that have not responded to other therapies. Abnormal heart rhythms are common in patients with arsenic poisoning, so there is concern that dangerous side effects might occur when arsenic is used to treat APL. A previous report found that heart rhythm abnormalities occurred in only 8 of 47 patients with leukemia receiving arsenic; none of these heart rhythms was life-threatening. However, another report described a patient with APL who ... Author, Article, and Disclosure InformationAffiliations: The summary below is from the full report titled “Prolongation of the QT Interval and Ventricular Tachycardia in Patients Treated with Arsenic Trioxide for Acute Promyelocytic Leukemia.” It is in the 5 December 2000 issue of Annals of Internal Medicine (volume 133, pages 881-885). The authors are K Ohnishi, H Yoshida, K Shigeno, S Nakamura, S Fujisawa, K Naito, K Shinjo, Y Fujita, H Matsui, A Takeshita, S Sugiyama, H Satoh, H Terada, and R Ohno.Summaries for Patients are a service provided by Annals to help patients better understand the complicated and often mystifying language of modern medicine.Summaries for Patients are presented for informational purposes only. These summaries are not a substitute for advice from your own medical provider. If you have questions about this material, or need medical advice about your own health or situation, please contact your physician. Previousarticle Advertisement FiguresReferencesRelatedDetailsSee AlsoProlongation of the QT Interval and Ventricular Tachycardia in Patients Treated with Arsenic Trioxide for Acute Promyelocytic Leukemia Kazunori Ohnishi , Hitoshi Yoshida , Kazuyuki Shigeno , Satoki Nakamura , Shinya Fujisawa , Kensuke Naito , Kaori Shinjo , Yota Fujita , Hirotaka Matsui , Akihiro Takeshita , Shiho Sugiyama , Hiroshi Satoh , Hajime Terada , and Ryuzo Ohno Metrics 5 December 2000Volume 133, Issue 11Page: I-59KeywordsArsenicBloodCancer treatmentDrugsElectrocardiographyHeartLongitudinal studiesPacemakersVeinsVentricular tachycardia ePublished: 5 December 2000 Issue Published: 5 December 2000 CopyrightCopyright © 2000 by American College of Physicians. All Rights Reserved.PDF DownloadLoading ...

The underlying heart rhythm in patients with an artificial cardiac pacemaker.

One-hundred forty-two patients with atrioventricular block (AVB) and 61 patients with sick sinus syndrome (SSS) were followed for an average of 50 months after permanent pacemaker insertion. Their underlying heart rhythms (UHR) were evaluated repeatedly by chest wall stimulation (CWS). A deficient UHR was defined as ventricular asystole lasting 4 seconds or longer. The underlying conduction disturbance increased in 14% of AVB patients, decreased in 14%, and remained constant in 68%. The occurrence of Adams-Stokes attacks before pacemaker implantation was associated with a higher incidence of deficient UHR both in AVB and SSS; a deficient UHR was seen more frequently in AVB than in SSS. Among AVB patients (1) atrial fibrillation, flutter or tachycardia and (2) sinus rhythm with incomplete AVB, especially Mobitz 1, when present before pacemaker implantation, were associated with a significantly lower incidence of deficient UHR during subsequent pacing in comparison with other AVB patients. CWS is a non-invasive method which allows the evaluation of UHR and which can contribute to the early recognition of pacemaker-dependent patients.