scholarly journals A Comprehensive Functional Analysis in Patients after Atrial Switch Surgery

2021 ◽  
Vol 69 (S 03) ◽  
pp. e32-e40
Author(s):  
Daniela Vollmer ◽  
Andreas Hornung ◽  
Gesa Wiegand ◽  
Christian Apitz ◽  
Heiner Latus ◽  
...  

Abstract Background Long-term course after atrial switch operation is determined by increasing right ventricular (RV) insufficiency. The aim of our study was to investigate subtle functional parameters by invasive measurements with conductance technique and noninvasive examinations with cardiac magnetic resonance imaging (CMR). Methods We used invasive (pressure–volume loops under baseline conditions and dobutamine) and noninvasive techniques (CMR with feature tracking [FT] method) to evaluate RV function. All patients had cardiopulmonary exercise testing (CPET). Results From 2011 to 2013, 16 patients aged 28.2 ± 7.3 (22–50) years after atrial switch surgery (87.5% Senning and 12.5% Mustard) were enrolled in this prospective study. All patients were in New York Heart Association (NYHA) class I to II and presented mean peak oxygen consumption of 30.1 ± 5.7 (22.7–45.5) mL/kg/min. CMR-derived end-diastolic volume was 110 ± 22 (78–156) mL/m2 and RV ejection fraction 41 ± 8% (25–52%). CMR-FT revealed lower global systolic longitudinal, radial, and circumferential strain for the systemic RV compared with the subpulmonary left ventricle. End-systolic elastance (Ees) was overall reduced (compared with data from the literature) and showed significant increase under dobutamine (0.80 ± 0.44 to 1.89 ± 0.72 mm Hg/mL, p ≤ 0.001), whereas end-diastolic elastance (Eed) was not significantly influenced (0.11 ± 0.70 to 0.13 ± 0.15 mm Hg/mL, p = 0.454). We found no relevant relationship between load-independent conductance indices and strain or CPET parameters. Conductance analysis revealed significant mechanical dyssynchrony, higher during diastole (mean 30 ± 4% baseline, 24 ± 6% dobutamine) than during systole (mean 17 ± 6% baseline, 19 ± 7% dobutamine). Conclusions Functional assessment of a deteriorating systemic RV remains demanding. Conductance indices as well as the CMR-derived strain parameters showed overall reduced values, but a significant relationship was not present (including CPET). Our conductance analysis revealed intraventricular and predominantly diastolic RV dyssynchrony.

2005 ◽  
Vol 13 (3) ◽  
pp. 208-210 ◽  
Author(s):  
Thaworn Subtaweesin ◽  
Somchai Sriyoschati

The atrial switch operation with the Rastelli procedure is becoming popular for treatment of the subgroup of corrected transposition of the great arteries with ventricular septal defect and pulmonary obstruction. This technique eliminates the problem of short- and long-term right ventricular failure, and decreases the incidence of iatrogenic atrioventricular heart block. Between April 2001 and November 2002, this technique was used in 3 patients aged 5 to 7 years. Two had a Senning operation and one had a Mustard operation. There was no operative death. The first patient needed re-operation to close the sternum. The last patient was re-explored for bleeding. All patients were in New York Heart Association functional class I at their last follow-up. The atrial switch plus Rastelli procedure is feasible in this subgroup of corrected transposition, but longer follow-up is necessary to determine whether this approach is indeed warranted.


2019 ◽  
Vol 26 (3) ◽  
pp. 90-100
Author(s):  
Justė Lukoševičiūtė ◽  
Kastytis Šmigelskas

Abstract. Illness perception is a concept that reflects patients' emotional and cognitive representations of disease. This study assessed the illness perception change during 6 months in 195 patients (33% women and 67% men) with acute coronary syndrome, taking into account the biological, psychological, and social factors. At baseline, more threatening illness perception was observed in women, persons aged 65 years or more, with poorer functional capacity (New York Heart Association [NYHA] class III or IV) and comorbidities ( p < .05). Type D personality was the only independent factor related to more threatening illness perception (βs = 0.207, p = .006). At follow-up it was found that only self-reported cardiovascular impairment plays the role in illness perception change (βs = 0.544, p < .001): patients without impairment reported decreasing threats of illness, while the ones with it had a similar perception of threat like at baseline. Other biological, psychological, and social factors were partly associated with illness perception after an acute cardiac event but not with perception change after 6 months.


Author(s):  
Farbod Raiszadeh ◽  
Neeraja Yedlapati ◽  
Ileana L Piña ◽  
Daniel M Spevack

Background: Since stroke volume (SV) is a function of ejection fraction (EF) and end-diastolic volume (EDV) (SV = EF x EDV), we hypothesized that increased EDV may be advantageous in systolic heart failure (HF), allowing the left ventricle to supply increased cardiac output. Methods: Echocardiograms from 968 consecutive patients seen in our hospital’s HF clinic were reviewed. Left ventricular volumes were measured both at end systole and end diastole using the bi-plane Simpson’s method and were indexed to body surface area. EF was calculated using (EDV-ESV)/EDV. Dates of subsequent HF events (death or admission for HF exacerbation) were obtained from our database. Results: Systolic HF (EF < 50%) was found in 649 of the study subjects. Increased SV index was associated with increased EDV index. The strength of this association varied with EF, Figure. In a bivariate Cox regression model, lower SV index and higher EDV index were each independent predictors of HF events. Increase in EDV by 50 cc was associated with a 20% increase in HF events, p<0.001. Decrease in SVI by 5 cc was associated with 5% increase in HF events, p<0.001. These associations were limited to those with systolic HF. The associations between both EDVI and SVI and HF events were not confounded by patient age, sex and New York Heart Association Class. Conclusion: Increased EDV index was independently associated with increased HF events, indicating that LV enlargement in HF is not favorable. These findings underscore the individual contributions of the components of EF (SV and EDV) in predicting HF outcomes.


Pteridines ◽  
1990 ◽  
Vol 2 (3) ◽  
pp. 165-167
Author(s):  
Mikhail Samsonov ◽  
Eugeney Nassonov ◽  
Valerei Masenko ◽  
Vladimir Naumov ◽  
Vjacheslav Mareev ◽  
...  

Summary Fifteen patients with clinical diagnosis of dilated cardiomyopathy (DCMP) were followed for 3 to 34 months. Serum neopterin and β2-microglobulin concentrations were measured by radioimmunoassay. According to the changes of neopterin and β2microglobulin levels in the follow-up study patients were divided into three groups. The course of disease in group 1 (5 patients with constant normal neopterin level <9 nmol/L) during the study) was stable without deterioration and increase of New York Heart Association (NYHA) Class. In group 2 (2 patients with raised neopterin in levels at the beginning of the study) some clinical improvement was associated with normalization of neopterin concentration. In group 3 (8 patients) the relation between the disease progression and increasing neopterin level was observed. The data of this study clearly indicated that neopterin measurements had a predictive value in patients with clinical diagnosis of DCMP.


2020 ◽  
Vol 13 (6) ◽  
Author(s):  
Carolyn Y. Ho ◽  
Iacopo Olivotto ◽  
Daniel Jacoby ◽  
Steven J. Lester ◽  
Matthew Roe ◽  
...  

Background: Obstructive hypertrophic cardiomyopathy (oHCM) is characterized by unexplained left ventricular (LV) hypertrophy associated with dynamic LV outflow tract obstruction. Current medical therapies are nonspecific and have limited efficacy in relieving symptoms. Mavacamten is a first-in-class targeted inhibitor of cardiac myosin, which has been shown to reduce LV outflow tract obstruction, improve exercise capacity, and relieve symptoms of oHCM in the PIONEER-HCM phase 2 study. Methods: EXPLORER-HCM is a multicenter, phase 3, randomized, double-blind, placebo-controlled trial to investigate the efficacy and safety of mavacamten in treating symptomatic oHCM. Eligible adults with oHCM and New York Heart Association Functional Class II or III are randomized 1:1 to receive once-daily, oral mavacamten, or matching placebo for 30 weeks. The primary composite functional end point is clinical response at week 30 compared to baseline defined as either (1) an increase in peak oxygen consumption ≥1.5 mL/kg/min and reduction of at least one New York Heart Association class; or (2) an improvement of ≥3.0 mL/kg/min in peak oxygen consumption with no worsening of New York Heart Association class. Secondary end points include change in postexercise LV outflow tract gradient, New York Heart Association class, peak oxygen consumption, and patient-reported outcomes assessed by the Kansas City Cardiomyopathy Questionnaire and a novel HCM-specific instrument. Exploratory end points aim to characterize the effect of mavacamten on multiple aspects of oHCM pathophysiology. Conclusions: EXPLORER-HCM is a phase 3 trial in oHCM testing a first-in-class, targeted strategy of myosin inhibition to improve symptom burden and exercise capacity through reducing LV outflow tract obstruction. Results of this trial will provide evidence to support the first disease-specific treatment for HCM. Registration: URL: https://www.clinicaltrials.gov ; Unique identifier: NCT03470545.


2020 ◽  
Vol 28 (12) ◽  
pp. 645-655 ◽  
Author(s):  
A. L. Duijnhouwer ◽  
J. Lemmers ◽  
J. Smit ◽  
J. van Haren-Willems ◽  
H. Knaapen-Hans ◽  
...  

Abstract Background Pulmonary artery (PA) dilatation is often seen in pulmonary hypertension (PH) and is considered a long-term consequence of elevated pressure. The PA dilates over time and therefore may reflect disease severity and duration. Survival is related to the stage of the disease at the time of diagnosis and therefore PA diameter might be used to predict prognosis. This study evaluates the outcome of patients with pulmonary arterial hypertension (PAH) and chronic thrombo-embolic pulmonary hypertension (CTEPH) and investigates whether PA diameter at the time of diagnosis is associated with mortality. Methods Patients visiting an outpatient clinic of a tertiary centre between 2004 and 2018 with a cardiac catheterisation confirmed diagnosis of PAH or CTEPH and a CT scan available for PA diameter measurement were included. PA diameter and established predictors of survival were collected (New York Heart Association (NYHA) class, N‑terminal pro-brain natriuretic peptide (NT-proBNP) level and 6‑min walking distance (6MWD)). Results In total 217 patients were included (69% female, 71% NYHA class ≥III). During a median follow-up of 50 (22–92) months, 54% of the patients died. Overall survival was 87% at 1 year, 70% at 3 years and 58% at 5 years. The mean PA diameter was 34.2 ± 6.2 mm and was not significantly different among all the diagnosis groups. We found a weak correlation between PA diameter and mean PA pressure ( r = 0.23, p < 0.001). Male sex, higher age, shorter 6MWD and higher NT-proBNP level were independently associated with mortality, but PA diameter was not. Conclusion The prognosis of PAH and CTEPH is still poor. Known predictors of survival were confirmed, but PA diameter at diagnosis was not associated with survival in PAH or CTEPH patients.


2007 ◽  
Vol 25 (18_suppl) ◽  
pp. 1029-1029
Author(s):  
M. Ryberg ◽  
D. L. Nielsen ◽  
G. Cortese ◽  
G. Nielsen ◽  
P. K. Andersen ◽  
...  

1029 Background: The object of the study was to conduct an analysis and assess a recommended cumulative dose of E corresponding to a 5 % risk for cardiotoxicity taking into account: dose administrations, concurrent risk of dying of MBC and possible predictors of cardiotoxicity. Methods: Data from 1097 consecutive anthracycline naïve pts was retrieved. Pts developing cardiac heart failure according to New York Heart Association (NYHA) Class =II were recorded as having E cardiotoxicity. Statistics: two extended Cox multivariate analysis (events: cardiotoxicity and mortality of MBC) followed by competing risk analysis. Results: 125 pts (11.4%) developed cardiotoxicity. Predictors for increasing the cardiotoxicity hazard ratio (HR) were: 1. cumulative dose of E: as the rate increased with 37% per every 100 mg/m2 E, when given as first line treatment for advanced disease, 2. increasing age as the rate increased with 28.7 % per additional 10 year, 3. x-ray including the heart (HR=2.08), 4. tamoxifen for relapse (HR=1.87), 5. pre-disposition to cardiac disease (HR=3.01). Mortality rate for MBC: the survival was significant lower in pts with increasing tumour burden, poorer performance status, previous adjuvant CMF, and with increasing age. The HR for mortality was significantly increased by increased duration of treatment with E and was highest in the first three months than later on. The risk of cardiotoxicity increased mostly during the first 8 months after cessation of E nearly becoming constant later on. The cumulative dose of E corresponding to a 5 % cardiotoxicity risk was found to be both significantly lower than previously assumed (900 mg/m2) and depend on predictors for mortality and cardiotoxicity. Thus, a pts with no predictors at age 40 the level of 5% risk was 806 mg/m2, at age 50 = 739 mg/m2, at age 60 = 673 mg/m2 and at age 70 = 609 mg/m2. Conclusion: The risk of cardiotoxicity of E was more pronounced than expected and occurred on a much lower cumulative dose of E. Increasing age, x-ray, tamoxifen and pre-disposition to cardiac disease contributed significantly to this. No significant financial relationships to disclose.


2018 ◽  
Vol 5 (3) ◽  
pp. 252-258 ◽  
Author(s):  
Morten Kvistholm Jensen ◽  
Lothar Faber ◽  
Max Liebregts ◽  
Jaroslav Januska ◽  
Jan Krejci ◽  
...  

Abstract Aims We analysed the impact of bundle branch block (BBB) and pacemaker (PM) implantation on symptoms and survival after alcohol septal ablation (ASA) in patients with hypertrophic cardiomyopathy (HCM). Methods and results Among 1416 HCM patients from the Euro-ASA registry, 58 (4%) patients had a PM and 64 (5%) patients had an implantable cardioverter-defibrillator (ICD) before ASA. At latest follow-up (5.0 ± 4.0 years) after ASA, 118 (8%) patients had an ICD and 229 (16%) patients had a PM. In patients without an implantable device prior to ASA 13% had a PM and 5% had an ICD implanted following ASA. New onset BBB was present in 44% (right BBB in 31%) of patients without previous BBB. At latest follow-up, we found no associations between BBB and New York Heart Association (NYHA) Class 3–4 [odds ratio (OR) 0.98, 95% confidence interval (CI) 0.63–1.51; P = 0.91] or Canadian Cardiovascular Society (CCS) Class 3–4 (OR 1.5, CI 0.32–6.7; P = 0.62), respectively, and no associations between PM and NYHA Class 3–4 (OR 1.2, CI 0.70–2.0; P = 0.52) or CCS 3–4 (OR 1.3, CI 0.24–6.6; P = 0.79), respectively. The survival after ASA was not reduced in patients with BBB [hazard ratio (HR) 0.73, CI 0.53–1.01; P = 0.06] or PM (HR 0.78, CI 0.52–1.17; P = 0.24). Conclusions Development of BBB or need for a PM after ASA in patients with obstructive HCM was not associated with inferior symptomatic outcome or reduced survival, thus concerns for the negative impact of impaired cardiac conduction on the clinical outcome after ASA were not confirmed.


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