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Objective: Peripartum cardiomyopathy (PPCM) diagnosis made by excluding identifiable causes of heart failure (HF) and occurs end of the pregnancy or during the postpartum period of five months. It presents a clinical HF spectrum with left ventricular systolic dysfunction. Background: The purpose of this study is to retrospectively evaluate the clinical characteristics, cardiac magnetic resonance (CMR) imaging features, and end‐points consisting of left ventricle recovery, left ventricular assist device implantation, heart transplantation, and all‐cause mortality. Method: Outpatient HF records between 2008 to 2021 were screened. Thirty‐seven patients were defined as PPCM. Twenty‐five patients had CMR evaluation at the time of diagnosis, and six patients were re‐evaluated with CMR. Results: The mean age was 30.5 ± 5.6 years, and the mean LVEF was 28.2% ± 6.7%. In 13(35.7%) patients, LVEF recovered during the follow‐up course. The median recovery time was 281(IQR [78–358]) days. LVEF on CMR was 35.3 ± 10.5, and three patients exhibited late gadolinium enhancement(LGE) patterns. Sub‐endocardial and mid‐wall uptake pattern types were detected. 18(75%) patients met the Petersen left ventricle non‐compaction cardiomyopathy(LVNC) criteria. Patients with NC/C ratio lower than 2.3 had lower LVEDVi and LVESVi (124.9 ± 35.4, 86.4 ± 7.5, p =.003; 86.8 ± 34.6, 52.6 ± 7.6, p =.006), respectively. The median follow‐up time was 2129 (IQR [911–2634]) days. The primary endpoint‐free 1‐year survival was 88.9% (event rate 11.1%), and 5‐year survival was 75.7% (event rate 24.3%). Conclusion: In a retrospective cohort of PPCM patients, 35.7% of patients' LVEF recovered, and the primary end‐point of free‐5‐year survival was 75%. Twenty‐five patients were assessed with CMR; three of four met the Petersen CMR‐derived LVNC at initial evaluation. [ABSTRACT FROM AUTHOR]

Aims: Left ventricular non‐compaction cardiomyopathy (LVNC) is a poorly understood entity resulting in heart failure. Whether it is a distinct form of cardiomyopathy or an anatomical phenotype is a subject of discussion. The current diagnosis is based on morphologic findings by comparing the compacted to non‐compacted myocardium. The study aimed to compare demographic and prognostic variables of patients with dilated cardiomyopathy (DCM) and LVNC. Emphasis was given to cardiac magnetic resonance (CMR) imaging analysis. Data on survival were also assessed. Methods and results: We retrospectively evaluated the characteristics and outcomes of 262 non‐ischaemic cardiomyopathy patients with LVNC and DCM phenotypes. Petersen's CMR criteria of non‐compacted to the compacted myocardial ratio 2.3 were used to diagnose LVNC. The primary endpoint was a composite endpoint of major adverse cardiovascular events comprising cardiovascular‐related death, left ventricular assisted device implantation, or heart transplantation. A total of 262 patients with CMR data were included in the study. One hundred fifty‐five patients who fulfilled CMR criteria were diagnosed as LVNC. CMR findings revealed that LVNC patients had higher left ventricular end‐diastolic (137.2 ± 51.6, 116.8 ± 44.6, P = 0.002) and systolic volume index (98.4 ± 49.5, 85.9 ± 42.7, P = 0.049). Cardiac haemodynamics, cardiac output (5.61 ± 2.03, 4.96 ± 1.83; P = 0.010), stroke volume (73.9 ± 28.8, 65.1 ± 25.1; P = 0.013), and cardiac index (2.85 ± 1.0, 2.37 ± 0.72; P < 0.0001), were higher in LVNC patients. Of all the 249 patients, 102 (40.9%) patients demonstrated late gadolinium enhancement (LGE). According to Petersen's criteria, the Kaplan–Meier survival outcome did not reveal significant differences (hazard ratio [HR]: 1.53, 95% confidence interval [CI]: [0.89–2.63], P = 0.11). The presence or pattern of LGE did not show significant importance for endpoint‐free survival. Most of the sub‐epicardial LGE pattern was found in LVNC patients (94.4%). When receiver operator characteristics analysis was applied to NC/C ratio to discriminate the primary endpoint, a higher NC/C ratio of 2.57 was associated with adverse events (HR: 1.90, 95% CI: [1.12–3.24], P = 0.016). Conclusions: Our study questions the criteria being used for the diagnosis of LVNC. Further evaluation of CMR variables and association of these findings with demographic variables and survival is mandatory. [ABSTRACT FROM AUTHOR]

Aim: Doppler echocardiography has become the standard imaging modality for diastolic function and provides pathophysiological insight into systolic and diastolic heart failure. In this study, we aimed to obtain normal echocardiographic Doppler parameters of healthy Turkish population. Methods: Among 31 collaborating institutions from all regions of Turkey, 1154 healthy volunteers were enrolled in this study. Predefined protocols were used for all participants during echocardiographic examination and The American Society of Echocardiography and European Association of Cardiovascular Imaging recommendations were used for echocardiographic Doppler measurements. Results: A total of 967 healthy participants were enrolled in this study after applying exclusion criteria. Echocardiographic examination was obtained from all subjects following predefined protocols. Mitral E wave velocity and E/A ratio were higher in females and decreased progressively in advancing ages. E wave deceleration time and A wave velocity were increased with aging. Assessment of tissue Doppler velocities showed that left ventricular lateral e′, septal e′, and septal s′ were higher in younger subjects and in females. E/e′ ratio was increased progressively with advancing decades. Right ventricular e′ and s′ were decreased but a′ was increased with increasing age. Septal e′ lower than 8 cm/s was 1.9% in the fifth decade and 13.7% in ages older than 50 years. The E/e′ ratio greater than 15 (and also 13) was not found. Conclusion: This study, for the first time, provides echocardiographic reference ranges for normal cardiac Doppler data in healthy Turkish population which will be useful in routine clinical practice as well as in future clinical trials. [ABSTRACT FROM AUTHOR]

Measuring the spatial correspondence among geographic features is an important component of many analyses such as those seeking to identify similar or dissimilar features, explore the extent to which change has taken place, and explain the processes influencing spatial change. In networked systems, the paths providing connectivity between pairs of nodes are often the geographic features among which spatial correspondence is to be assessed. That is, given a set of paths between a pair of nodes, the extent to which they share portions of the network and spatially deviate from one another can provide insight on the factors underlying the use of a system. While methods for measuring the spatial correspondence among specific types of network paths have been devised, this article proposes a methodology for measuring the spatial correspondence among the topology of network paths of any type, including those involving redundant use of network space. By basing comparisons upon the topologic relationships among the paths, the proposed approach better accounts for average spatial deviation as well as the asymmetric spatial relationship between pairs of paths, enabling greater stability and consistency in the analysis of their spatial characteristics. The developed methodology is applied to evaluate variability in spatial correspondence among a set of network paths to demonstrate its utility. [ABSTRACT FROM AUTHOR]