Cardiopulmonary exercise test (CPET) parameters are established prognosticators in heart failure. However, the prognostic value of preimplantation and postimplantation CPET parameters in left ventricular assist device (LVAD) therapy is unclear and it is evaluated in this study. Adult patients who were implanted with an LVAD and underwent CPET during the preimplantation or postimplantation period were retrospectively analyzed. Five CPET parameters were calculated: vO2 max, oxygen uptake efficiency slope (OUES), VE/vCO2 Slope, VE/vCO2 min, and VE/vCO2 max. The relationship between CPET parameters and postimplantation outcomes was evaluated with multivariable analysis. Pre and postimplantation CPET cohorts included 191 and 122 patients, respectively. Among preimplantation CPET parameters: vO2 max and OUES were associated with 1, 3, and 5 year mortality, VE/vCO2 min was associated with 3 and 5 year mortality, whereas VE/vCO2 Slope was associated with 5 year mortality. From postimplantation CPET parameters: vO2 max was an independent predictor of 3 and 5 year mortality, whereas VE/vCO2 max was an independent predictor of 3 year mortality following LVAD implantation. Preimplantation CPET parameters have a prognostic value for long-term survival following LVAD implantation, whereas their association with early postimplantation outcomes appears to be weaker. Postimplantation vO2 max and VE/vCO2 max values are associated with survival on device support and may provide a second chance for prognostication in patients without preimplantation CPET data.
The peripheral vascular effects of continuous-flow left ventricular assist device (CF-LVAD) implantation are still unclear. The aim of the current study was to determine peripheral vascular function before and after implantation of CF-LVAD in patients with end-stage heart failure (HF), and to compare this data to age- and sex-matched chronic heart failure with reduced ejection fraction (HFrEF) patients. Forty-three consecutive end-stage HF patients (New York Heart Association [NYHA] class III/IV; three women and 40 men; mean age 53 ± 11 years) who planned to receive CF-LVAD implantation comprised the LVAD patient population, and their clinical characteristics, preoperative and third postoperative month peripheral vascular function assessment data including flow-mediated dilation (FMD) and pulsatility index (PI) assessed by ultrasound Doppler in brachial artery were compared to age- and sex-matched chronic, stable HFrEF patients (NYHA class II; five women and 30 men; mean age 51 ± 10 years). After CF-LVAD implantation, median FMD decreased from 5.4 to 3.7% (p < 0.001), and median PI decreased from 6.9 to 1.4 (p < 0.001). In patients with end-stage HF before CF-LVAD implantation, FMD and PI were significantly lower compared to the chronic HFrEF patients (FMD: 5.4% ± 0.9% vs. 7.6% ± 1.1%; p < 0.001, respectively) and (PI: 6.9 ± 1.3 vs. 7.4 ± 1.2; p = 0.023, respectively). The current study revealed impaired peripheral vascular function in the end-stage HF patients compared to stable HFrEF patients, and documented the deterioration of peripheral vascular function after CF-LVAD implantation. These results suggest that impaired peripheral vascular function in the CF-LVAD patients compared to preoperative assessment is a consequence of the nonpulsatile blood flow due to the continuous-flow mechanical support.
1 January 2016 in Intractable & Rare Diseases Research
Percutaneous atrial septal defect (ASD) closure has become an increasingly simplified procedure over the past decade. The device embolization is seen rarely but it can be fatal. Although percutaneous retrieval is feasible, surgical removal might be preferred when the endothelialization status of the device is unknown. We report a comlication of such closure in a 43-year-old woman: embolization of the ASD occluder device into aortic arch 12 months after implantation. We removed the device surgically and closed the ASD.
Introduction: Medication adherence is critical to improve quality of life, reduce transplant‐related complications, and increase survival. Nonadherent health behaviors after heart transplantation lead to increased morbidity and mortality, decreased quality of life, increased medical costs, and overuse of healthcare services in heart transplant patients (HTR).This study examined the relationship between heart transplant recipients' medication adherence, dietary practices, and physical activity.Methods: This cross‐sectional study was conducted at a university hospital's Heart and Lung Transplant Outpatient Clinic. The sample included adult HTR who had undergone transplantation at least 6 months prior. Data were collected using the Basel Assessment of Adherence to Immunosuppressive Medication Scale, a Nutritional Behaviors Questionnaire, and the International Physical Activity Questionnaire Short Form Statistical analyses using SPSS 24.0, with significance set at p < 0.05.Results: Among 70 participants, 42.85% were non‐adherent to immunosuppressive medications. Factors influencing adherence included age and time since transplantation. Dietary assessments revealed that while most patients practiced washing fruits and vegetables, adherence to other food safety measures was low. Physical activity levels indicated that 50% of participants were physically inactive, with high body mass index significantly correlating with lower activity levels. Patients with medication adherence had higher physical activity levels.Conclusion: The study highlights the critical need for targeted interventions to improve medication adherence, dietary practices, and physical activity among HTR. Addressing these factors is essential for enhancing patient outcomes, reducing morbidity and mortality, and improving quality of life posttransplant. Further research is warranted to explore the barriers and facilitators influencing these health behaviors in diverse populations.
This study aimed to evaluate the influencing variables for outcomes in patients with septic shock having culture-proven carbapenem-resistant Gram-negative pathogens. It included 120 patients (mean age 64.29 ± 1.35 years and 58.3% female). The mean Sequential Organ Failure Assessment score during septic shock diagnosis was found to be 11.22 ± 0.43 and 9 ± 0.79 among the patients with mortality and among the survivors, respectively (P = 0.017). The logistic regression analysis showed that empirical treatment as mono Gram-negative bacteria–oriented antibiotic therapy (P = 0.016, odds ratio (OR) = 17.730, 95% confidence interval (CI): 1.728−182.691), Charlson Comorbidity Index >2 (P = 0.032, OR = 7.312, 95% CI: 5.7−18.3), and systemic inflammatory response syndrome score 3 or 4 during septic shock diagnosis (P = 0.014, OR = 5.675, 95% CI: 1.424−22.619) were found as independent risk factors for day 30 mortality. Despite early diagnosis and effective management of patients with septic shock, the mortality rates are quite high in CRGNP-infected patients.