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  • About
  • The Global ETD Search service is a free service for researchers to find electronic theses and dissertations. This service is provided by the Networked Digital Library of Theses and Dissertations.
    Our metadata is collected from universities around the world. If you manage a university/consortium/country archive and want to be added, details can be found on the NDLTD website.
1

Ett hjärta i kaos : Personers upplevelser av livet efter plötsligt hjärtstopp. En litteraturöversikt. / A heart in chaos : People's experiences of life after sudden cardiac arrest. A literature review.

Simonsson, Elin, Karlsson, Julia January 2018 (has links)
Bakgrund: År 2016 drabbades 7 934 personer i Sverige av plötsligt hjärtstopp där någon slags behandling påbörjats. På grund av ökade kunskaper kring plötsligt hjärtstopp ökar antalet överlevare. Plötsligt hjärtstopp kan upplevas som en traumatisk kris och kan påverka personens liv. Detta medför ett behov av att förbättra kunskapen och förståelsen för hur personer upplever livet efter plötsligt hjärtstopp. Syfte: Att beskriva personers upplevelser av livet efter plötsligt hjärtstopp. Metod: Litteraturöversikt där nio artiklar med kvalitativ ansats analyserats induktivt. Resultat: Tre teman identifierades. Existentiellt kaos med subteman; Varför jag? och Närheten till döden. Tillbaka till tryggheten med subteman; Behov av närhet och Behov av information. Ett nytt liv med subteman; Livet förändras och Livet omprioriteras. Personerna som drabbats av hjärtstopp hade behov av att fylla i minnesluckor, försöka förstå vad som hade hänt samt finna en mening med händelsen. Slutsats: Resultatet visade att personer som genomgått plötsligt hjärtstopp upplevde att det nya livet innebar fysiska, kognitiva och emotionella svårigheter. Att lära sig leva igen innebar omprioriteringar i livet.
2

En kvalitativ syntes av anhörigas upplevelser under och efter närståendes plötsliga hjärtstopp

Leino, Marina January 2017 (has links)
Bakgrund: Ett hjärtstopp är ett ytterst allvarligt tillstånd som påverkar inte bara patienten själv utan hela familjen, speciellt en nära anhörig. Patienten svävar mellan liv och död, och om patienten överlever är det ofta med mer eller mindre bestående men. Vid patientens sida finns de anhöriga som vill vara nära, hjälpa och stöda sin närstående samtidigt som det också kan vara en mycket svår situation för dem. Syfte: Syftet med den här kvalitativa litteraturstudien var att belysa anhörigas upplevelser av en närståendes hjärtstopp, för att i framtiden bättre kunna tillmötesgå dem inom vården. Metod: En kvalitativ sammanfattande litteraturstudie baserad på åtta vetenskapliga artiklar som hade studerat anhörigas upplevelser under själva hjärtstoppet, på intensiv-vårdsavdelningen eller efter hemkomst. Resultat: Hjärtstoppet var en kaotisk och traumatisk upplevelse för den anhöriga. Patienten var viktigast, all fokus var på patienten men det lämnade ofta den anhöriga ensam med den oro och rädsla situationen framkallat. Tillgång till kontinuerlig information och professionellt bemötande var ytterst viktigt för den anhöriga. Möjligheten att få vara nära närstående dygnet runt ingav säkerhet och trygghet. Brist på information och uppföljning efter utskrivning och en känsla av att vara ensam med allt ansvar var återkommande teman. Slutsats: Att som anhörig vara nära vid ett hjärtstopp var en stark existentiell upplevelse där alla aspekter av delaktighet fanns beskrivna; att veta, att göra och att vara. För bästa resultat, ett delaktigt vårdande i ljuset, krävs en samverkan mellan den vårdande personalen, patient och anhörig. Mer stöd och uppmärksamhet bör i framtiden riktas även mot den anhöriga. / Background: Sudden cardiac arrest is a life threatening condition, not only affecting the patient but the whole family. The patient’s life is on hold and if the patient survives, this is often with more or less physical and psychological complications. Close to the patient a family member or relative, tries to support and help the patient while at the same time the situation may be extremely stressful for the relative. Aim: The aim of this qualitative literature review was to get a better understanding of family members lived experiences during a loved one’s sudden cardiac arrest, in order to better also support the relatives in healthcare. Method: A summary of the literature based on eight qualitative studies on the perceptions of family members experiences of a sudden cardiac arrest by a loved one; during the cardiac arrest, at the intensive care unit and after discharge from hospital. Results: The cardiac arrest was experienced as a chaotic and traumatic event by the relative. The patient was the most important person at the moment but at the same time it left the relative alone with her feelings of anxiety and fear that the situation induced. Receiving information continuously about their next of kin’s condition as well as a considerate and professional encounter with the intensive care unit staff was important for the relative. The possibility to stay with the patient at the intensive care unit felt comforting, reassuring and safe. Lack of information and follow up, as well as a feeling of being alone with the responsibility, was a common theme after discharge from the hospital. Conclusion: To be present during the next of kin’s cardiac arrest was a strong existential experience where all aspects of involvement and participation were described; to know, to do and to be. For best results, an involving care in the light, collaboration between the professional care, the patient and the family member is needed. More support and attention should be given to family members in the future.
3

Test of a Smock System on CPR Primary Emergency Measures and Medical Errors During Simulated Emergencies

Thomas, Ruth 20 November 2012 (has links)
Rates of survival of victims of sudden cardiac arrest (SCA) using cardio pulmonary resuscitation (CPR) have shown little improvement over the past three decades. Since registered nurses (RNs) comprise the largest group of healthcare providers in U.S. hospitals, it is essential that they are competent in performing the four primary measures (compression, ventilation, medication administration, and defibrillation) of CPR in order to improve survival rates of SCA patients. The purpose of this experimental study was to test a color-coded SMOCK system on:1) time to implement emergency patient care measures 2) technical skills performance 3) number of medical errors, and 4) team performance during simulated CPR exercises. The study sample was 260 RNs (M 40 years, SD=11.6) with work experience as an RN (M 7.25 years, SD=9.42).Nurses were allocated to a control or intervention arm consisting of 20 groups of 5-8 RNs per arm for a total of 130 RNs in each arm. Nurses in each study arm were given clinical scenarios requiring emergency CPR. Nurses in the intervention group wore different color labeled aprons (smocks) indicating their role assignment (medications, ventilation, compression, defibrillation, etc) on the code team during CPR. Findings indicated that the intervention using color-labeled smocks for pre-assigned roles had a significant effect on the time nurses started compressions (t=3.03, p=0.005), ventilations (t=2.86, p=0.004) and defibrillations (t=2.00, p=.05) when compared to the controls using the standard of care. In performing technical skills, nurses in the intervention groups performed compressions and ventilations significantly better than those in the control groups. The control groups made significantly (t=-2.61, p=0.013) more total errors (7.55 SD 1.54) than the intervention group (5.60, SD 1.90). There were no significant differences in team performance measures between the groups. Study findings indicate use of colored labeled smocks during CPR emergencies resulted in: shorter times to start emergency CPR; reduced errors; more technical skills completed successfully; and no differences in team performance.
4

När livet tar en oväntad vändning : En litteraturöversikt om patienters upplevelser efter att ha överlevt ett hjärtstopp. / When life takes an unexpected turn : A literature review of patients' experiences after surviving a cardiac arrest

Larsson, Camilla, Johansson, Hanna January 2022 (has links)
Bakgrund: Under 2019 överlevde ca 18% av de som drabbats av hjärtstopp. Dödligheten vid hjärtstopp är hög och konsekvenserna kan bli stora och konvalescensen lång. För att förstå vad patienter upplever efter överlevnad krävs kunskap om ämnet. Syfte: Att belysa patienters upplevelser efter att ha överlevt ett hjärtstopp. Metod: En litteraturöversikt med kvalitativ design genomfördes. Resultat: Analysen resulterade i temat ett främmande liv med nytt perspektiv innehållande tre subteman; att vakna i kaos, att leva i närvaron av sitt hjärtstopp och att se livet med andra ögon, samt temat ett begränsat liv i ett nytt sammanhang innehållande fyra subteman; att inte lita på sin kropp, att leva i skuggan av mental ohälsa, att vara i behov av stöd och att fortsätta leva livet. Slutsats: Överlevnad var förenat med upplevelser av lidande vilket medförde begränsningar i det dagliga livet men det gav också nya perspektiv. Det upplevdes svårt att komma hem efter utskrivning relaterat till osäkerhet och minskad tillit till kroppen. Sjukvården upplevdes inte tillmötesgå patienternas behov av information och rådgivning vilket förorsakade ytterligare lidande. Att i framtiden utforska behovet av stöd och uppföljning utifrån ett långsiktigt perspektiv är relevant då studieresultatet visar att det har upplevts saknats för patienterna. / Background: Mortality from cardiac arrest is high and the consequences can be big and the convalescence long. In terms of being able to understand what patients experience after survival, more knowledge is required. Aim: To illuminate patients' experiences after surviving a cardiac arrest. Method: A literature review with qualitative design was conducted. Results: The analysis resulted in the theme of a foreign life with a new perspective containing three subthemes; to wake up in chaos, to live in the presence of the cardiac arrest and to see life with different eyes. The other theme was a limited life in a new coherence containing four subthemes; not to trust their body, to live in the shadow of mental illness, to be in need of support and to continue living life. Conclusions: Survival was associated with experiences of suffering, which led to limitations in daily life, but also gave new perspectives on life. It was difficult to come home after discharge related to insecurity and decreased confidence in the body. Healthcare was perceived as not being able to meet patients' needs for information and advice, which caused further suffering. According to the result, it is relevant to further explore the need for.
5

Analýza zásahů Zdravotnické záchranné služby Hlavního města Prahy za období 2007 - 2009 / The analysis of the Health Rescue Service City of Prague trips for the period 2007 - 2009

Turek, Jan January 2011 (has links)
Work name: The analysis of the Health Rescue Service City of Prag trips for the period 2007 - 2009 Aim of work: The aim of this work is to describe and assess by graphs the analysis of the Health Rescue Service City of Prag trips in Prag for the period 2007 - 2009. Further to classify its historical progress, describe its current state including the modern equipment and also describe access of resuscitations for the same period. Method: In this work a method of data collection from avaiable literature of the Health Rescue Service City of Prag is used as well as the consultation with experienced rescue workers and people who work on the operation centre and who are processing the data and statistics of the Health Rescue Service City of Prag trips. Results: The result of this work is the graphical representation of the single trips for the urgent life - threatening events and their subsequent comparison for the period 2007 - 2009. There is also the evaluation of the success of interventions. Key words: the Health Rescue Service, the medical emergency, a rescue worker, an emergency event, a sudden cardiac arrest, the resuscitation
6

Physical exercise and sudden cardiac death:characteristics and risk factors

Toukola, T. (Tomi) 23 October 2018 (has links)
Abstract Physical activity with regular physical exercise (PE) has long been advocated because it lowers morbidity and mortality. However, there have been concerns about a transiently increased risk of adverse cardiac events such as sudden cardiac death (SCD) during PE. Our aim was to identify risk factors related to SCD during PE and clarify the effect of PE on cardiovascular well-being in the general population. In study I we found out that male gender as well as coronary artery disease (CAD), cardiac hypertrophy and myocardial scarring as autopsy-findings were clearly more common among exercise-related SCD. Typical northern activities in skiing and snow shoveling were among the three most common types of PE alongside cycling. In study II we analyzed the previously recorded electrocardiograms (ECG) of victims of SCD. Fragmented QRS complex (fQRS) in anterior leads was a common finding among subjects who died during exercise, especially among subjects with a prior diagnosis of CAD. In study III, we collected retrospectively out-of-hospital sudden cardiac arrest (SCA) data in Northern Ostrobothnia between the years 2007 and 2012. The subjects who suffered SCA in relation to PE were younger and previously healthier, and they had more often a shockable rhythm as the initial rhythm. There was a markedly better prognosis for hospital discharge when SCA occurred during PE. In study IV, we noticed a decrease in cardiac mortality in subjects who were physically active or became active during follow-up in a population of 1,746 stable CAD patients. A similar effect could be seen affecting SCD mortality. No increase in cardiac mortality could be seen among those with the highest levels of habitual PE. In conclusion, ischemic heart disease and male gender, especially when fQRS is present in anterior leads, are characteristics related to exercise-related SCD. On the other hand, when SCA takes place during PE, the prognosis is markedly better compared to SCA occurring at rest. An active lifestyle is also linked to decreased cardiac mortality. / Tiivistelmä Säännöllinen aktiivinen elämäntapa on yhteydessä pienempään fyysisten ja psyykkisten sairauksien riskiin. Tutkimuksissa on kuitenkin havaittu raskaampaan liikuntaan liittyvä väliaikaisesti lisääntynyt akuutin sydäntapahtuman, kuten äkkikuoleman, riski. Väitöskirjatutkimuksessa tutkitaan rasitukseen liittyvän sydänperäisen äkkikuoleman erityispiirteitä ja fyysisen aktiivisuuden merkitystä hyvinvoinnille. Ensimmäisessä osajulkaisussa havaittiin, että rasitukseen liittyvissä kuolemissa oli ruumiinavauslöydöksenä merkittävästi enemmän sepelvaltimotautia, sydänlihaksen arpeutumista ja sydänlihaksen liikakasvua verrattuna äkkikuolemiin levossa. Miessukupuoli oli selkeästi yliedustettuna rasituspopulaatiossa, sillä peräti 94 % oli miehiä. Yleisimmät rasitusmuodot olivat hiihto, pyöräily ja lumenluonti. Toisessa osatutkimuksessa tutkittiin edeltävien EKG-muutosten yhteyttä rasitusperäisiin äkkikuolemiin. Havaitsimme, että QRS-kompleksin pirstoutuminen etuseinäkytkennöissä oli selkeästi yleisempi löydös rasitusryhmässä. Tämä löydös oli erityisen merkittävä sepelvaltimotautipotilailla. Kolmas julkaisu sisältää tiedot sairaalan ulkopuolisista sydänpysähdyksistä Pohjois-Pohjanmaalla vuosina 2007–2012. Tässä aineistossa havaitsimme, että rasitukseen liittyvän sydänpysähdyksen alkurytmi oli useammin defibrilloitava, potilaat olivat nuorempia ja terveempiä, ja maallikkoelvytys aloitettiin useammin. Rasituksessa elottomaksi menneillä oli suhteellisen hyvä selviämisennuste. Neljännessä tutkimuksessa havaitsimme selkeästi paremman ennusteen niillä stabiilia sepelvaltimotautia sairastaneilla, jotka olivat liikunnallisesti aktiivisia. Sydänperäinen kuolleisuus oli pienempi myös niillä potilailla, jotka onnistuivat lisäämään liikunnallista aktiivisuuttaan. Samankaltainen tulos todettiin sydänperäisten äkkikuolemien osalta. Sepelvaltimotauti ja miessukupuoli ovat hyvin yleisiä löydöksiä, kun sydänperäinen äkkikuolema tapahtuu rasituksessa. Myös QRS-kompleksin pirstoutuminen etuseinäkytkennöissä liittyi rasitusperäisiin kuolemiin. Toisaalta potilaan ennuste selvitä on selkeästi parempi sydänpysähdyksen tapahtuessa rasituksessa. Osoitimme myös, että liikunnallinen aktiivisuus ja sen pienikin lisäys parantavat sepelvaltimotautipotilaiden ennustetta.
7

Anestesisjuksköterskans upplevelse av att använda endotrachealtub och larynxmask vid plötsligt hjärtstopp / The Nurse anesthesia’s experience of using endotracheal tube and laryngeal mask in case of sudden cardiac arrest

Mases, Johanna, Ahlskog, Oskar January 2022 (has links)
Introduktion: Anestesisjuksköterskor arbetar inom flera olika delar av sjukvården. Tack vare deras kunskaper om luftvägar och omhändertagande av kritiskt sjuka patienter så anställs anestesisjuksköterskor inom olika prehospitala verksamheter så som exempelvis resursenheter. Vid plötsliga hjärtstopp är upprättandet av en fri luftväg kritiskt. Detta görs vanligen genom användandet av olika medicintekniska hjälpmedel som larynxmask eller endotrachealtub. De respektive hjälpmedlen har olika styrkor och svagheter som är väl studerade, men upplevelser av att använda dessa metoder finns det lite forskning om. Syfte: Syftet med studien var att studera anestesisjuksköterskans upplevelser av att använda larynxmask och endotrachealtub vid plötsliga hjärtstopp utanför sjukhuset. Metod: En kvalitativ induktiv enkätstudie med öppna semistrukturerade frågor genomfördes för att fånga användarnas upplevelser av skillnader mellan dessa metoder av luftvägshantering. 14 anestesisjuksköterskor med minst två års erfarenhet samt erfarenhet av att arbeta prehospitalt deltog i studien. Deltagarna arbetar i tre regioner vilka har stora skillnader i resurser och arbetsrutiner. Resultat: Larynxmask var mest använt, trots att nästan alla deltagare föredrog att ha patienten intuberad. Orsaken till att laynxmasken användes trots att deltagarna föredrog att patienten skulle ha en endotrachealtub varierade något men hade flera gemensamma faktorer så som tidsåtgång och enkel användning. / Introduction: Nurse anesthesias work in different parts of healthcare. In various prehospital activities and different resource units these specialist nurses are often hired for their knowledge of the airways and critical patients. In case of sudden cardiac arrest, the establishment of a free airway is critical. This is usually done using various medical aids such as a laryngeal mask or endotracheal tube. These have their different strengths and weaknesses that are well studied, but there is little research on experiences of using these methods. Aim: The aim of the study was to study anesthesia nurses' experiences of using a laryngeal mask and endotracheal tube in sudden cardiac arrest outside the hospital. Method: A qualitative inductive survey with open semistructural questions, was done to capture the users’ experiences of the differences between these methods of airway management. This study included 14 nurse anesthetists, with at least 2 years of experience and experience of working in a prehospital setting. Participants from three regions participated, those regions differ in resources and ways of working routines. Result: The laryngeal mask is most commonly used, even though almost all participants prefer to have an intubated patient. The reasons for that varies between the participants but have several common factors such as time of application and ease of use.
8

Molecular physiology of ankyrin-G in the heart:Critical regulator of cardiac cellular excitability and architecture.

Makara, Michael A. 12 August 2016 (has links)
No description available.
9

RISK OF QT INTERVAL PROLONGATION, VENTRICULAR TACHYCARDIA AND SUDDEN CARDIAC ARREST ASSOCIATED WITH QT INTERVAL PROLONGING DRUGS IN PATIENTS WITH HEART FAILURE WITH PRESERVED EJECTION FRACTION

Chien-Yu Huang (13162095) 27 July 2022 (has links)
<p>  </p> <p><strong>Background: </strong></p> <p>Torsades de pointes (TdP) is a polymorphic ventricular tachycardia (VT) associated with heart rate-corrected QT interval (QTc) prolongation on the electrocardiogram (ECG). TdP can cause sudden cardiac arrest (SCA), a catastrophic outcome. The antiarrhythmic drugs dofetilide and sotalol can cause QTc prolongation and arrhythmias, as can more than 200 other medications available on global markets. Heart failure (HF) with reduced ejection fraction (HFrEF) is a risk factor for drug-induced TdP, and HFrEF heightens sensitivity to drug-induced QTc lengthening. However, ~55% of patients with HF have preserved, rather than reduced, ejection fraction. It remains unknown whether patients with HF with preserved ejection fraction (HFpEF) are at increased risk for drug-induced VT/SCA. Assessment of the risk of drug-induced VT/SCA in HFpEF patients is important, so that recommendations can be made regarding the safety of QTc-prolonging drugs and need for enhanced ECG monitoring in this population. </p> <p><strong>Objective:</strong></p> <p>In aim 1, we sought to determine the risk of VT and SCA associated with dofetilide and sotalol in patients with HFpEF. In aim 2, we were able to use QTc interval to determine the odds of dofetilide/sotalol-associated QT interval prolongation in patients with HFpEF. In Aim 3, we investigated the influence of HFpEF on VT and SCA associated with a broader group of drugs known to cause TdP (“known “TdP drugs”), as designated by the QT drugs list at www.crediblemeds.org. </p> <p><strong>Methods:</strong></p> <p>In aim 1, we used Medicare claims (2014-2016) and ICD-9/10 codes to identify patients taking the QT interval-prolonging drugs dofetilide or sotalol, which are used commonly in patients with HF and atrial fibrillation, as well as non-dofetilide or sotalol users among 3 groups: HFpEF, HFrEF, and no HF. Multinomial propensity score-matching was performed. Cochran–Mantel–Haenszel statistics and standardized differences were used to compare baseline characteristics. A generalized Cox proportional hazards model was used to estimate hazard ratios (HRs) and test the association of VT and SCA among dofetilide/sotalol users, HFpEF, HFrEF, and no HF.</p> <p>In Aim 2, the data source was electronic health records from the Indiana Network for Patient Care (February 2010 to May 2021). After removing patients with overlapping diagnoses of HFpEF and HFrEF, no diagnosis code, absence of QT interval records, and no validated record of using dofetilide or sotalol, we identified patients taking dofetilide or sotalol among three groups: HFrEF, HFpEF, and no HF. Cochran–Mantel–Haenszel statistics were used to compare baseline characteristics. QT interval prolongation was defined as heart rate-corrected QT (QTc) > 500 ms during dofetilide/sotalol therapy. Unadjusted odds ratios (OR) of QT interval prolongation were determined by univariate analysis, and adjusted ORs were determined by generalized estimating equations (GEE) with logit link to account for an individual cluster with different times of hospitalization and covariates.</p> <p>In aim 3, we used Medicare enrollment in fee-for-service medical and pharmacy benefits (2014 to 2016) and ICD-9/10 codes, we identified patients taking drugs known to cause torsades de pointes (TdP drugs; www.crediblemeds.org) and non-TdP drug users among three groups: HFrEF, HFpEF, and no HF. Multinomial propensity score-matching was performed to minimize baseline differences in covariates (patient demographics, comorbidities, health care utilization and drug history). Cochran–Mantel–Haenszel statistics and standardized differences were used to compare baseline characteristics. A generalized Cox proportional hazards model was used to estimate HRs and test the association of VT and SCA among TdP drug users with HFpEF, HFrEF, and no HF.</p> <p><strong>Results:</strong></p> <p>In Aim 1, VT and SCA occurred in 166 (10.68%) and 16 (1.03%), respectively, of 1,554 dofetilide/sotalol users with HFpEF, 543 (38.76%) and 40 (2.86%) of 1,401 dofetilide/sotalol users with HFrEF, and 245 (5.06%) and 13 (0.27%) of 4,839 dofetilide/sotalol users with no HF. The adjusted HR for VT in patients with HFrEF was 7.00 (95% CI 6.12-8.02) and in patients with HFpEF was 1.99 (1.71-2.32). The risk of VT associated with dofetilide/sotalol was increased across the overall study population (HR: 2.47 [1.89-3.23]). Use of dofetilide/sotalol increased the risk of VT in patients with HFrEF (HR: 1.53 [1.07-2.20]) and in those with HFpEF (HR: 2.34 [1.11-4.95]). However, while the overall risk of SCA was increased in patients with HFrEF (HR: 5.19 [4.10-6.57]) and HFpEF (HR: 2.53 [1.98-3.23]) compared to patients with no HF, dofetilide/sotalol use was not significantly associated with an increased risk of SCA.</p> <p>In Aim 2, QTc prolongation associated with dofetilide/sotalol occurred in 51.2% of patients with HFpEF, 70.1% of patients with HFrEF, and 29.4% of patients with no HF. After adjusting for age, sex, race, serum potassium and magnesium concentrations, kidney function, concomitant drug therapy, and comorbid conditions, the adjusted odds of having QTc interval larger than 500ms during the hospital stay were 5.23 [3.15-8.67] for HFrEF and 1.98 [1.17-3.33] for HFpEF with no HF as the reference group. </p> <p>In Aim 3, of 23,910 known TdP drug users with HFrEF, VT and SCA occurred in 4,263 (17.8%) and 493 (2.1%) patients, respectively. In comparison, among 31,359 known TdP drug users with HFpEF, VT and SCA occurred in 1,570 (5.0%) and 340 (1.1%) patients. VT and SCA occurred in 3,154 (0.8%) and 528 (0.1%) of 384,824 known TdP drug users without HF. The overall HR of both VT and SCA was increased in patients with HFrEF (HR: 7.18 [6.13-8.40])  and in those with HFpEF (HR: 2.09 [1.80-2.42]). The risk of VT associated with known TdP drugs was increased across the overall population (HR: 1.34 [1.20-1.51]). Use of known TdP drugs significantly increased the risk of VT and SCA in patients with HFrEF (HR: 1.34 [1.07-1.67]), but not in patients with HFpEF.</p> <p><strong>Conclusion:</strong></p> <p>HFpEF may exhibit an enhanced response to drug-associated VT, and is associated with a higher risk of drug-associated QTc interval prolongation. Further study is needed to identify methods to minimize this risk for patients with HFpEF requiring therapy with dofetilide, sotalol, or drugs known to cause TdP. </p>

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