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Kormányos Á, Gyenes N, Horváth Á, Ambrus N, Lengyel C, Valkusz Z, Nemes A. Left Ventricular Rotational Abnormalities in Treated Hypopituitarism: Insights From the Three-Dimensional Speckle-Tracking Echocardiographic MAGYAR-Path Study. Front Cardiovasc Med 2021; 8:703146. [PMID: 34778389 PMCID: PMC8578265 DOI: 10.3389/fcvm.2021.703146] [Citation(s) in RCA: 0] [Impact Index Per Article: 0] [Reference Citation Analysis] [Abstract] [Key Words] [Grants] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 04/30/2021] [Accepted: 09/06/2021] [Indexed: 11/13/2022] Open
Abstract
Introduction: Hypopituitarism is a rare, often underdiagnosed, complex hormonal disease caused by the decreased secretion of one or more hormones in the pituitary gland. The present study was designed to assess left ventricular (LV) rotational mechanics in patients with treated hypopituitarism. It was also aimed to find possible differences in these parameters according to the origin of hypopituitarism (congenital vs. acquired). Methods: The present prospective study involved 35 treated patients with hypopituitarism; however, 4 patients had to be excluded due to inferior image quality. The mean age of the remaining 31 cases was 56.3 ± 13.2 years (18 males). The control group consisted of 29 age- and sex-matched healthy volunteers (mean age: 55.3 ± 4.8 years, 14 males). In all cases a complete two-dimensional echocardiography examination was performed followed by three-dimensional speckle-tracking echocardiography. Results: No significant differences could be found in LV volumes between the controls and patients with hypopituitarism and hypopituitary subgroups. LV apical rotation (8.1 ± 5.1° vs. 10.6 ± 3.5°, p < 0.05) and LV twist (11.9 ± 5.3° vs. 15.1 ± 3.8°, p < 0.05) were impaired in the hypopituitary group with normally directed LV rotational mechanics as compared to the healthy controls. However, 13% of patients showed a near absence of LV twist called LV "rigid body rotation" (LV-RBR). There were no significant differences regarding LV apical and basal rotations and twist between acquired and congenital hypopituitary subgroups. Conclusions: Impaired LV apical rotation and twist could be demonstrated in hypopituitarism regardless of its origin. In the present study with small number of patients with hypopituitarism, LV-RBR was present in 13% of cases.
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Affiliation(s)
| | | | | | | | | | | | - Attila Nemes
- Department of Medicine, Medical Faculty, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
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Nemes A, Kormányos Á, Domsik P, Kalapos A, Ambrus N, Modok S, Borbényi Z, Marton I. Left ventricular rotational mechanics in hypereosinophilic syndrome-Analysis from the three-dimensional speckle-tracking echocardiographic MAGYAR-Path Study. Echocardiography 2019; 36:2064-2069. [PMID: 31693238 DOI: 10.1111/echo.14517] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Received: 09/29/2019] [Accepted: 10/10/2019] [Indexed: 11/30/2022] Open
Abstract
INTRODUCTION Hypereosinophilic syndrome (HES) is a very heterogeneous group of disorders with varied etiologies characterized by peripheral eosinophilia and eosinophilic tissue/end-organ damage. Three-dimensional speckle-tracking echocardiography (3DSTE) was used for assessment of left ventricular (LV) rotational mechanics in HES patients. METHODS The study comprised 13 HES patients, from which one patient was excluded due to insufficient image quality. The remaining patient population consisted of 12 HES cases (mean age: 59.7 ± 13.7 years, eight males). The control group consisted of 36 healthy volunteers (mean age: 52.9 ± 8.3 years, 23 males). 3DSTE was used for the evaluation of LV rotational abnormalities. RESULTS Both LV apical rotation (4.86 ± 1.92 degree vs 10.07 ± 3.92 degree, P < .0001) and LV twist (8.52 ± 2.79 degree vs 14.41 ± 4.26 degree, P < .0001) showed significant deteriorations in most of HES patients. Time-to-peak LV apical rotation (380 ± 115 ms vs 344 ± 69 ms, P = .56), LV basal rotation (335 ± 148 ms vs 337 ± 111 ms, P = .89), and LV twist (348 ± 91 ms vs 320 ± 60 ms, P = .64) were not significantly different between HES patients and controls. No correlations could be detected between absolute eosinophil count and eosinophil ratio and apical LV rotation (r = 0.12, P = .51 and r = 0.23, P = .45, respectively) and LV twist (r = 0.24, P = .39 and r = 0.31, P = .34, respectively). In two subjects, the absence of LV twist called LV "rigid body rotation" (RBR) was detected. CONCLUSIONS Reduced LV apical rotation and twist could be demonstrated in HES. LV-RBR could be detected in some HES patients.
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Affiliation(s)
- Attila Nemes
- 2nd Department of Medicine and Cardiology Centre, Medical Faculty, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Árpád Kormányos
- 2nd Department of Medicine and Cardiology Centre, Medical Faculty, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Péter Domsik
- 2nd Department of Medicine and Cardiology Centre, Medical Faculty, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Anita Kalapos
- 2nd Department of Medicine and Cardiology Centre, Medical Faculty, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Nóra Ambrus
- 2nd Department of Medicine and Cardiology Centre, Medical Faculty, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Szabolcs Modok
- Division of Haematology, 2nd Department of Medicine and Cardiology Centre, Medical Faculty, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Zita Borbényi
- Division of Haematology, 2nd Department of Medicine and Cardiology Centre, Medical Faculty, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Imelda Marton
- Division of Haematology, 2nd Department of Medicine and Cardiology Centre, Medical Faculty, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary.,Department of Transfusiology, Medical Faculty, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
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Determinants of myocardial function characterized by CMR-derived strain parameters in left ventricular non-compaction cardiomyopathy. Sci Rep 2019; 9:15882. [PMID: 31685845 PMCID: PMC6828801 DOI: 10.1038/s41598-019-52161-1] [Citation(s) in RCA: 22] [Impact Index Per Article: 4.4] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Subscribe] [Scholar Register] [Received: 05/26/2019] [Accepted: 10/12/2019] [Indexed: 12/28/2022] Open
Abstract
Clinical presentation of left ventricular non-compaction cardiomyopathy (LVNC) can be heterogeneous from asymptomatic expression to congestive heart failure. Deformation indices assessed by cardiovascular magnetic resonance (CMR) can determine subclinical alterations of myocardial function and have been reported to be more sensitive to functional changes than ejection fraction. The objective of the present study was to investigate the determinants of myocardial deformation indices in patients with LVNC. Twenty patients with LVNC (44.7 ± 14.0 years) and twenty age- and gender-matched controls (49.1 ± 12.4 years) underwent functional CMR imaging using an ECG-triggered steady state-free-precession sequence (SSFP). Deformation indices derived with a feature tracking algorithm were calculated including end-systolic global longitudinal strain (GLS), circumferential strain (GCS), longitudinal and circumferential strain rate (SRll and SRcc). Twist and rotation were determined using an in-house developed post-processing pipeline. Global deformation indices (GLS, GCS, SRll and SRcc) were significantly lower in patients with LVNC compared to healthy controls (all, p < 0.01), especially for midventricular and apical regions. Apical rotation and twist were impaired for LVNC (p = 0.007 and p = 0.012), but basal rotation was preserved. Deformation indices of strain, strain rate and twist correlated well with parameters of the non-compacted myocardium, but not with the total myocardial mass or the thinning of the compacted myocardium, e.g. r = 0.595 between GLS and the non-compacted mass (p < 0.001). In conclusion, CMR deformation indices are reduced in patients with LVNC especially in affected midventricular and apical slices. The impairment of all strain and twist parameters correlates well with the extent of non-compacted myocardium.
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Borda B, Kormányos Á, Domsik P, Kalapos A, Lengyel C, Ambrus N, Lázár G, Forster T, Nemes A. Left ventricular rotational abnormalities following successful kidney transplantation-insights from the three-dimensional speckle-tracking echocardiographic MAGYAR-Path Study. Quant Imaging Med Surg 2019; 8:1095-1101. [PMID: 30701163 DOI: 10.21037/qims.2018.10.12] [Citation(s) in RCA: 1] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 12/31/2022]
Abstract
Background Kidney transplantation (KTx) is the preferred treatment for virtually all suitable candidates with end-stage renal disease. There is limited information on left ventricular (LV) rotational mechanics post-KTx, therefore the present study aimed to assess it and to compare it to that of age- and gender-matched healthy controls. Methods The present study comprised 42 KTx patients, from which 4 patients were excluded due to insufficient image quality (mean age: 46.3±8.2 years, 29 males). Control group consisted of 81 age- and gender-matched healthy individuals (mean age: 43.5±10.8 years, 51 males). All KTx patients and healthy controls successfully underwent transthoracic two-dimensional (2D) Doppler echocardiography and three-dimensional speckle-tracking echocardiography (3DSTE). Results Significant differences could be demonstrated in LA diameter, LV end-diastolic diameter and volume, interventricular septum, LV posterior wall thickness, LV ejection fraction and early and late filling transmitral flow velocities and in their ratio between KTx patients and controls; none of the subjects examined showed grade 2-4 mitral and/or tricuspid regurgitations. Three patients following successful KTx showed near absence of LV twist called as LV 'rigid body rotation' (RBR) movement. When the remaining 35 post-KTx patients were analysed separately, reduced basal LV rotation could be demonstrated in post-KTx patients with tendentious increase in apical LV rotation resulting in an unchanged LV twist. Conclusions KTx is associated with alterations in LV rotational mechanics with unchanged LV twist suggesting a remodelling of this sort of movement. The near absence of LV twist (LV-RBR) could be demonstrated in some post-KTx cases.
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Affiliation(s)
- Bernadett Borda
- Department of Surgery, Faculty of Medicine, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Árpád Kormányos
- 2nd Department of Medicine and Cardiology Centre, Faculty of Medicine, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Péter Domsik
- 2nd Department of Medicine and Cardiology Centre, Faculty of Medicine, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Anita Kalapos
- 2nd Department of Medicine and Cardiology Centre, Faculty of Medicine, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Csaba Lengyel
- 1st Department of Medicine, Faculty of Medicine, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Nóra Ambrus
- 2nd Department of Medicine and Cardiology Centre, Faculty of Medicine, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - György Lázár
- Department of Surgery, Faculty of Medicine, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Tamás Forster
- 2nd Department of Medicine and Cardiology Centre, Faculty of Medicine, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Attila Nemes
- 2nd Department of Medicine and Cardiology Centre, Faculty of Medicine, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
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Kormányos Á, Domsik P, Kalapos A, Orosz A, Lengyel C, Valkusz Z, Trencsányi A, Forster T, Nemes A. Left ventricular twist is impaired in acromegaly: Insights from the three-dimensional speckle tracking echocardiographic MAGYAR-Path Study. JOURNAL OF CLINICAL ULTRASOUND : JCU 2018; 46:122-128. [PMID: 28990677 DOI: 10.1002/jcu.22529] [Citation(s) in RCA: 15] [Impact Index Per Article: 2.5] [Reference Citation Analysis] [Abstract] [Key Words] [MESH Headings] [Track Full Text] [Subscribe] [Scholar Register] [Received: 04/12/2017] [Revised: 06/13/2017] [Accepted: 07/20/2017] [Indexed: 06/07/2023]
Abstract
INTRODUCTION Acromegaly is a rare, chronic, disfiguring, and debilitating disease caused, in 90% of cases, by a benign monoclonal growth hormone-secreting pituitary adenoma. The present study aimed to assess left ventricular (LV) rotational and twist mechanics in acromegalic patients and to compare their results to age- and gender-matched healthy controls. METHODS The present study comprised 24 acromegalic patients, from which 4 were excluded due to insufficient image quality (mean age: 57.8 ± 13.7 years, 7 men). The control group consisted of 18 age- and gender-matched healthy individuals (mean age: 54.8 ± 6.9 years, 8 men). RESULTS In 4 out of 20 acromegalic patients, LV showed near absence of twist, as the so-called LV "rigid body rotation" (RBR). Between all acromegalic patients without LV-RBR and controls, both LV basal (-3.76 ± 1.73 vs. -6.17 ± 2.66°, P = .004) and apical rotation (6.12 ± 4.03 vs. 10.81 ± 3.65°, P = .001) and LV twist (9.88 ± 4.74 vs. 16.98 ± 3.88°, P < .001) differed significantly. Between active and nonactive acromegaly subgroups, only the time-to-peak LV twist (377 ± 78 vs. 229 ± 97 ms, P = .005) showed significant difference. CONCLUSIONS Acromegaly is associated with impaired LV rotation and twist as assessed by 3-dimensional speckle tracking echocardiography. LV-RBR is a frequent phenomenon in acromegaly.
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Affiliation(s)
- Árpád Kormányos
- 2nd Department of Medicine and Cardiology Centre, Faculty of Medicine, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Péter Domsik
- 2nd Department of Medicine and Cardiology Centre, Faculty of Medicine, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Anita Kalapos
- 2nd Department of Medicine and Cardiology Centre, Faculty of Medicine, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Andrea Orosz
- Department of Pharmacology and Pharmacotherapy, Faculty of Medicine, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Csaba Lengyel
- 1st Department of Medicine, Faculty of Medicine, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Zsuzsanna Valkusz
- 1st Department of Medicine, Faculty of Medicine, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Attila Trencsányi
- 1st Department of Medicine, Faculty of Medicine, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Tamás Forster
- 2nd Department of Medicine and Cardiology Centre, Faculty of Medicine, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
| | - Attila Nemes
- 2nd Department of Medicine and Cardiology Centre, Faculty of Medicine, Albert Szent-Györgyi Clinical Center, University of Szeged, Szeged, Hungary
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Aggeli C, Lagoudakou S, Felekos I, Panagopoulou V, Kastellanos S, Toutouzas K, Roussakis G, Tousoulis D. Two-dimensional speckle tracking for the assessment of coronary artery disease during dobutamine stress echo: clinical tool or merely research method. Cardiovasc Ultrasound 2015; 13:43. [PMID: 26498476 PMCID: PMC4619392 DOI: 10.1186/s12947-015-0038-z] [Citation(s) in RCA: 36] [Impact Index Per Article: 4.0] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 06/02/2015] [Accepted: 10/16/2015] [Indexed: 12/11/2022] Open
Abstract
BACKGROUND Two-dimensional speckle tracking provides valuable information for regional wall motion abnormalities. The purpose of this study was to determine the diagnostic value of left ventricular longitudinal strain and torsion to diagnose coronary artery disease during dobutamine stress echocardiography. METHODS We studied 100 patients (mean age 60.8 ± 10.7 years, 72 male) with known or suspected coronary artery disease, excluding those with prior history of transmural infraction. All of them underwent dobutamine stress echo and coronary angiography within one month. Wall-motion score index, left ventricular global longitudinal strain and torsion were measured at rest and peak stress. Additionally, the respective differences between rest and stress were also calculated. Optimal cut-offs were derived from receiver operating characteristic curves for strain and torsion values. RESULTS Mean left ventricular ejection fraction was 55 ± 5.4 %. Coronary angiography revealed significant lesions in 67 patients. Values regarding sensitivity, and specificity for wall motion score index difference were 78 % and 88 % respectively (area under curve 0.84). Global longitudinal strain difference (median 0.5 %) illustrated 81 % sensitivity and 72 % specificity for disease detection (area under curve 0.80, cut-off value ≤0 %). The respective values for torsion difference (median 4.7°) were 81 % and 82 % (area under curve 0.76, cut-off value ≤6.5°). Combination of wall motion score index difference and torsion difference for disease detection showed 91 % sensitivity and 79 % specificity (area under curve 0.85). CONCLUSIONS The implementation of speckle tracking during dobutamine stress echo could serve as an adjunct method for coronary artery disease assessment, providing quantitative diagnostic information.
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Affiliation(s)
- Constantina Aggeli
- 1st Cardiology Department, Hippokration Hospital, Athens Medical School, 114 Vas. Sophias Ave, Athens, Greece.
| | - Stauroula Lagoudakou
- 1st Cardiology Department, Hippokration Hospital, Athens Medical School, 114 Vas. Sophias Ave, Athens, Greece
| | - Ioannis Felekos
- 1st Cardiology Department, Hippokration Hospital, Athens Medical School, 114 Vas. Sophias Ave, Athens, Greece
| | - Vasiliki Panagopoulou
- 1st Cardiology Department, Hippokration Hospital, Athens Medical School, 114 Vas. Sophias Ave, Athens, Greece
| | - Stellios Kastellanos
- 1st Cardiology Department, Hippokration Hospital, Athens Medical School, 114 Vas. Sophias Ave, Athens, Greece
| | - Konstantinos Toutouzas
- 1st Cardiology Department, Hippokration Hospital, Athens Medical School, 114 Vas. Sophias Ave, Athens, Greece
| | - George Roussakis
- 1st Cardiology Department, Hippokration Hospital, Athens Medical School, 114 Vas. Sophias Ave, Athens, Greece
| | - Dimitris Tousoulis
- 1st Cardiology Department, Hippokration Hospital, Athens Medical School, 114 Vas. Sophias Ave, Athens, Greece
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Stewart GM, Yamada A, Kavanagh JJ, Haseler LJ, Chan J, Sabapathy S. Reproducibility of Echocardiograph-Derived Multilevel Left Ventricular Apical Twist Mechanics. Echocardiography 2015; 33:257-63. [DOI: 10.1111/echo.13020] [Citation(s) in RCA: 6] [Impact Index Per Article: 0.7] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 01/20/2023] Open
Affiliation(s)
- Glenn M. Stewart
- Menzies Health Institute Queensland; Griffith University; Gold Coast QLD Australia
| | - Akira Yamada
- Menzies Health Institute Queensland; Griffith University; Gold Coast QLD Australia
| | - Justin J. Kavanagh
- Menzies Health Institute Queensland; Griffith University; Gold Coast QLD Australia
| | - Luke J. Haseler
- Menzies Health Institute Queensland; Griffith University; Gold Coast QLD Australia
| | - Jonathan Chan
- Cardiology Division; The Prince Charles Hospital; Brisbane QLD Australia
- School of Medicine; Griffith University; Gold Coast QLD Australia
| | - Surendran Sabapathy
- Menzies Health Institute Queensland; Griffith University; Gold Coast QLD Australia
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Bloechlinger S, Berger D, Bryner J, Roost E, Jakob S, Dünser MW, Takala J. Changes in Left Ventricular Torsion Early Postoperatively After Aortic Valve Replacement and at Long-Term Follow-up. J Cardiothorac Vasc Anesth 2015; 29:860-7. [DOI: 10.1053/j.jvca.2015.01.010] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 09/27/2014] [Indexed: 12/16/2022]
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CERCENELLI L, MARCELLI E. CARDIAC APEX ROTATION ASSESSED BY AN IMPLANTABLE GYRO SENSOR: CORRELATION WITH A LV PRESSURE-DERIVED MYOCARDIAL PERFORMANCE INDEX IN EXPERIMENTALLY INDUCED ISCHEMIA. J MECH MED BIOL 2015. [DOI: 10.1142/s0219519415400138] [Citation(s) in RCA: 3] [Impact Index Per Article: 0.3] [Reference Citation Analysis] [Abstract] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/18/2022]
Abstract
Despite many investigators have focused attention on cardiac apex rotation (CAR) as a sensitive marker of left ventricle (LV) function, no studies have been specifically aimed to evaluate the correlation of CAR with myocardial performance index (MPI), a well-known index of both systolic and diastolic performance. In four sheep, we measured CAR using a miniature gyro sensor epicardically positioned at LV apex and we evaluated the beat-to-beat correlation between CAR and a myocardial performance index calculated from LV-pressure (LVP) measurements (MPILVP). We also compared CAR with hemodynamic parameters (LVdP/dtMAX, LVdP/dtMIN). A strong negative correlation was observed between CAR and MPILVP during the experimental cardiac conditions (baseline, acute ischemia induced by coronary ligation and release of ligation). At 30 s after ligation a marked decrease of CAR was observed, while LVdP/dtMAX showed minor changes. CAR has good potential to reflect changes of global myocardial performance and to predict hemodynamic changes in acute impairment of cardiac function.
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Affiliation(s)
- L. CERCENELLI
- Experimental Diagnostic and Specialty Medicine Department, University of Bologna, Via Massarenti 9, 40138, Bologna, Italy
| | - E. MARCELLI
- Experimental Diagnostic and Specialty Medicine Department, University of Bologna, Via Massarenti 9, 40138, Bologna, Italy
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Papadopoulou E, Kaladaridou A, Mattheou J, Pamboucas C, Hatzidou S, Antoniou A, Toumanidis S. Effect of pacing mode and pacing site on torsional and strain parameters and on coronary flow. J Am Soc Echocardiogr 2014; 28:347-54. [PMID: 25456534 DOI: 10.1016/j.echo.2014.10.014] [Citation(s) in RCA: 2] [Impact Index Per Article: 0.2] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 12/30/2013] [Indexed: 11/28/2022]
Abstract
BACKGROUND Right ventricular apical pacing may induce detrimental effects on left ventricular function and coronary flow. In this study, the effects of pacing site and mode on cardiac mechanics and coronary blood flow were evaluated. METHODS This prospective study included 25 patients who received dual-chamber pacemakers with the ventricular lead placed in the right ventricular apex and presented in sinus rhythm (SR) at their regularly scheduled visits at the pacemaker clinic. Patients underwent complete transthoracic echocardiographic examinations while in SR, followed by noninvasive Doppler assessment of coronary flow in the left anterior descending coronary artery (LAD) and speckle-tracking echocardiography of short-axis planes in SR, atrial pacing (AAI-P), atrioventricular (dual-chamber) pacing (DDD-P), and ventricular pacing (VVI-P). RESULTS Rotation of the base was significantly decreased with VVI-P compared with AAI-P. Left ventricular twist decreased significantly with DDD-P compared with AAI-P. Circumferential strain of the base significantly decreased with DDD-P and VVI-P compared with SR. The velocity-time integral of diastolic flow in the LAD decreased significantly with DDD-P compared with SR (10.7 ± 2.2 vs 10.2 ± 2.2 vs 8.9 ± 1.6 vs 8.7 ± 2.6 cm in SR and with AAI-P, DDD-P, and VVI-P, respectively, P = .003). Basal rotation and time from onset of the QRS complex to peak basal rotation as a percentage of systole were independently associated with the velocity-time integral of diastolic flow in the LAD during SR and the three pacing modes. CONCLUSIONS Acute right ventricular apical pacing showed a detrimental effect on left ventricular twist and basal mechanics, with the latter being independently associated with decreased LAD diastolic flow velocity parameters.
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Affiliation(s)
- Elektra Papadopoulou
- Department of Clinical Therapeutics, Medical School, University of Athens, "Alexandra" Hospital, Athens, Greece.
| | - Anna Kaladaridou
- Department of Clinical Therapeutics, Medical School, University of Athens, "Alexandra" Hospital, Athens, Greece
| | - John Mattheou
- Department of Clinical Therapeutics, Medical School, University of Athens, "Alexandra" Hospital, Athens, Greece
| | - Constantinos Pamboucas
- Department of Clinical Therapeutics, Medical School, University of Athens, "Alexandra" Hospital, Athens, Greece
| | - Sophia Hatzidou
- Department of Clinical Therapeutics, Medical School, University of Athens, "Alexandra" Hospital, Athens, Greece
| | - Anna Antoniou
- Department of Clinical Therapeutics, Medical School, University of Athens, "Alexandra" Hospital, Athens, Greece
| | - Savvas Toumanidis
- Department of Clinical Therapeutics, Medical School, University of Athens, "Alexandra" Hospital, Athens, Greece
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Meta-analysis of low density lipoprotein receptor (LDLR) rs2228671 polymorphism and coronary heart disease. BIOMED RESEARCH INTERNATIONAL 2014; 2014:564940. [PMID: 24900971 PMCID: PMC4036410 DOI: 10.1155/2014/564940] [Citation(s) in RCA: 12] [Impact Index Per Article: 1.2] [Reference Citation Analysis] [Abstract] [Track Full Text] [Download PDF] [Figures] [Subscribe] [Scholar Register] [Received: 01/29/2014] [Revised: 04/03/2014] [Accepted: 04/22/2014] [Indexed: 12/31/2022]
Abstract
Low density lipoprotein receptor (LDLR) can regulate cholesterol metabolism by removing the excess low density lipoprotein cholesterol (LDL-C) in blood. Since cholesterol metabolism is often disrupted in coronary heart disease (CHD), LDLR as a candidate gene of CHD has been intensively studied. The goal of our study is to evaluate the overall contribution of LDLR rs2228671 polymorphism to the risk of CHD by combining the genotyping data from multiple case-control studies. Our meta-analysis is involved with 8 case-control studies among 7588 cases and 9711 controls to test the association between LDLR rs2228671 polymorphism and CHD. In addition, we performed a case-control study of LDLR rs2228671 polymorphism with the risk of CHD in Chinese population. Our meta-analysis showed that rs2228671-T allele was significantly associated with a reduced risk of CHD (P = 0.0005, odds ratio (OR) = 0.83, and 95% confidence interval (95% CI) = 0.75–0.92). However, rs2228671-T allele frequency was rare (1%) and was not associated with CHD in Han Chinese (P = 0.49), suggesting an ethnic difference of LDLR rs2228671 polymorphism. Meta-analysis has established rs2228671 as a protective factor of CHD in Europeans. The lack of association in Chinese reflects an ethnic difference of this genetic variant between Chinese and European populations.
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Wang B, Chen H, Shu X, Hong T, Lai H, Wang C, Cheng L. Emerging role of echocardiographic strain/strain rate imaging and twist in systolic function evaluation and operative procedure in patients with aortic stenosis. Interact Cardiovasc Thorac Surg 2013; 17:384-91. [PMID: 23644729 DOI: 10.1093/icvts/ivt171] [Citation(s) in RCA: 9] [Impact Index Per Article: 0.8] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Subscribe] [Scholar Register] [Indexed: 11/12/2022] Open
Abstract
Systolic function of the left ventricle is vital for patients with aortic stenosis. Unfortunately, the most widely used clinical parameter, the left ventricular ejection fraction, is not sensitive enough, especially for patients with left ventricular hypertrophy. Echocardiographic strain/strain rate and twist are emerging parameters for left ventricular systolic and diastolic function evaluation. Aortic stenosis could reduce strain/strain rate while magnifying twist. Furthermore, strain/strain rate correlates well with the prognosis of patients with aortic stenosis. Most importantly the circumferential strain, strain rate and twist also play a role in differentiating cardiac compensation or decompensation. In any case, these parameters could normalize after successful surgical aortic valve replacement or transcatheter aortic valve replacement. Regardless of these advantages, clinical evidence is needed to ensure their usefulness.
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Affiliation(s)
- Bin Wang
- Department of Cardiac Surgery, Zhongshan Hospital, Fudan University, Shanghai Institute of Cardiovascular Diseases, Shanghai, China
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