著者

Chisato Sawatari Nobutake Kurebayashi Shuji Morikawa Satoru Iwashima

出版者

The Japanese Circulation Society

雑誌

Circulation Journal (ISSN:13469843)

巻号頁・発行日

pp.CJ-21-1055, (Released:2022-02-15)

参考文献数

1

被引用文献数

1

著者

Chisato Sawatari Nobutake Kurebayashi Shuji Morikawa Satoru Iwashima

出版者

The Japanese Circulation Society

雑誌

Circulation Journal (ISSN:13469843)

巻号頁・発行日

vol.86, no.7, pp.1145, 2022-06-24 (Released:2022-06-24)

参考文献数

1

被引用文献数

1

著者

Satoru Iwashima Yuma Yanase Ken Takahashi Yusuke Murakami Aki Tanaka Yasuo Hiyoshi

出版者

The Japanese Circulation Society

雑誌

Circulation Journal (ISSN:13469843)

巻号頁・発行日

pp.CJ-22-0804, (Released:2023-06-20)

参考文献数

39

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Background: This study used echocardiography to investigate non-invasive myocardial work (MCW) indices in infants born to mothers with diabetes mellitus (DM) in pregnancy (gestational DM: GDM), including those diagnosed under novel classification criteria and those with pre-existing DM.Methods and Results: This single-centered, retrospective study included 25 infants born to mothers with GDM (termed “infant with GDM”), which was diagnosed by oral glucose tolerance test results during pregnancy or the presence of diabetes before the current pregnancy. We evaluated the relationship between the infant’s MCW, such as global constructive work (GCW), global work index (GWI), global work efficiency (GWE), and global wasted work (GWW), and the mother’s GDM maximal HbA1c during pregnancy. HbA1c level in GDM significantly negatively correlated with GWI* (r=−0.565) and GCW* (r=−0.641). In infants with GDM, GWI and GCW were significantly higher with <6.5% HbA1c than in those with >6.5% HbA1c GDM; however, the specific-layer global longitudinal strain analyses did not show any significant differences between the groups. The pressure-strain loop in infants with >6.5% HbA1c in GDM tended to be smaller than in those infants with <6.5% HbA1c GDM.Conclusions: The hyperglycemic environment of GDM leads to impaired MCW in the infants. MCW is useful for screening for cardiac illnesses among infants with GDM. Appropriate maternal blood glucose management while maintaining HbA1c <6.5% might be beneficial for the cardiac performance of infants with GDM.

著者

Yuma Yanase Satoru Iwashima Ken Takahashi

出版者

The Japanese Circulation Society

雑誌

Circulation Reports (ISSN:24340790)

巻号頁・発行日

vol.4, no.9, pp.429-438, 2022-09-09 (Released:2022-09-09)

参考文献数

42

被引用文献数

1

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Background: Myocardial work (MCW), estimated using non-invasive pressure-strain loops, is a novel approach for assessing left ventricular function. MCW offers potential advantages over left ventricular ejection fraction and global longitudinal strain (GLS). This study aimed to establish a reference range for MCW in newborns.Methods and Results: Overall, 113 healthy newborns (mean [±SD] birth weight 3,120±378 g) were included in the study. After entering peripheral systolic and diastolic blood pressure (BP) values, global constructive work (GCW), global work index (GWI), global work efficiency (GWE), and global wasted work (GWW) were calculated using EchoPAC software (version 204). Considering a mean [±SD] GLS of −16.3±2.8%, the mean [±SD] GWI, GCW, GWW, and GWE was 698.7±147.9 mmHg%, 1,008.5±200.1 mmHg%, 58.1±28.1 mmHg%, and 93.1±2.9%, respectively. All MCW parameters in newborns were lower than those previously reported in children and adults. However, GWI and GCW were more closely correlated with BP and GLS, as in adulthood and children. Estimation of the correlation between MCW and the frame rate index revealed no significant correlations among MCW parameters.Conclusions: Cardiac function in newborns was evaluated by assessing MCW. With the establishment of reference ranges and normative MCW data for newborns, routine clinical use and rotational mechanics are likely to become increasingly common. Future studies are needed to determine whether MCW is useful in screening for cardiac illness among newborns.

著者

Satoru Iwashima Takamichi Ishikawa

出版者

The Japanese Circulation Society

雑誌

Circulation Journal (ISSN:13469843)

巻号頁・発行日

vol.76, no.8, pp.2009-2014, 2012 (Released:2012-07-25)

参考文献数

30

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Background: The ophthalmic artery Doppler waveform (OADW) is thought to correlate with severity of systemic atherosclerosis. The goal of the present study was to evaluate risk of cardiovascular disease (CVD) in newborns small for gestational age (SGA) and appropriate for gestational age (AGA). Methods and Results: A total of 15 SGA and 26 AGA newborns were enrolled in the study. OADW was compared between SGA and AGA groups. The median Doppler maximums of both eyes in the SGA group were significantly smaller than in the AGA group (maximum average velocity (max A) 6.4cm/s vs. 8.3cm/s, P=0.028; maximum end diastolic velocity (max D) 2.2cm/s vs. 3.4cm/s, P=0.003). The maximums of both eyes for the maximum resistivity index (max RI) and maximum pulsatility index (max PI) in the SGA group were significantly greater than in the AGA group (RI, 0.88 vs. 0.82, P=0.005; PI, 2.23 vs. 1.72, P=0.002). When a multiple linear regression analysis of the SGA group with a stepwise procedure was applied to positive variables from 2-sided comparisons, significant correlations were noted for max A and max PI (max A: R2=0.495, β=0.541, P=0.034; max PI: β=-3.318, P=0.012). Conclusions: OADW in SGA newborns may be related to future risk of CVD, which is undetectable in infancy, and can provide information to estimate future cardiovascular health.  (Circ J 2012; 76: 2009–2014)

著者

Satoru Iwashima Satoshi Hayano Yusuke Murakami Aki Tanaka Yumiko Joko Shuji Morikawa Mayumi Ifuku Takeshi Iso Ken Takahashi

出版者

The Japanese Circulation Society

雑誌

Circulation Reports (ISSN:24340790)

巻号頁・発行日

vol.1, no.9, pp.378-388, 2019-09-10 (Released:2019-09-10)

参考文献数

59

被引用文献数

5

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Background:This study compared the myocardial performance of infants born to mothers with gestational diabetes mellitus (IGDM) and without GDM (controls) under the new GDM definitions.Methods and Results:The subjects consisted of 36 IGDM and 39 control infants. GDM diagnosis was based on oral glucose tolerance test during pregnancy or the presence of diabetes prior to the current pregnancy. Between-group infant cardiac function was determined and compared using 2-D speckle tracking analysis, intraventricular pressure difference (IVPD) and IVP gradient (IVPG), using color M-mode Doppler imaging. IVPD and IVPG were higher in IGDM than in the controls, particularly the mid–apical IVPG. The global circumferential strain (GCS) and endocardial GCS were higher in IGDM than in controls. Increased maternal glycated hemoglobin was correlated with reduced transmural and epicardial GCS in the IGDM. Maternal maximum fasting blood sugar had a mild, positive correlation with IVPD and IVPG.Conclusions:Ventricular sucking force, measured as the IVPD, IVPG, and endocardial GCS, were higher in IGDM than in the controls. A hyperglycemic environment during pregnancy leads to impaired cardiac performance in IGDM, compared with control infants. IGDM might have favorable systolic and diastolic cardiac performance due to cardiac metabolic adaptations occurring before poor glucose control causes impaired cardiac performance.