The Ballistocardiogram in Myocardial Infarction: A Study of One Hundred Cases

Moser, Marvin; Pordy, L; Chesky, Kenneth; Taymor, Robert C.; Mastér, Arthur M.

doi:10.1161/01.cir.6.3.402

Cited by 14 publications

(5 citation statements)

References 15 publications

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“…It is possible, as Starr (1952) has suggested, that the ballistocardiogram may prove to have some prognostic value, but more follow-up studies are required to clarify this point. The overall results, which show that approximately 80 per cent of patients with coronary arterial disease have an abnormal ballistocardiogram, correspond with the results reported by other workers (Chensky et al, 1951;Moser et al, 1952;Scarborough et al, 1952;Jacob, 1954). Chesky et al and Scarborough et al also divided their patients according to whether there had been infarction or not and found similar ballistocardiographic results in the two groups.…”

Section: Discussionsupporting

confidence: 91%

The Ballistocardiogram in the Diagnosis of Coronary Arterial Disease

Wade¹,

Fulton²,

Mackinnon³

1956

Heart

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Section: Discussionsupporting

confidence: 91%

The Ballistocardiogram in the Diagnosis of Coronary Arterial Disease

Wade¹,

Fulton²,

Mackinnon³

1956

Heart

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“…A growing number of evidences indicate that the signals recorded with SCG and BCG are good indicators of myocardial function and dysfunction: indeed, metrics of iK and P obtained from SCG and BCG signals are 4 strongly related to stroke volume (SV), cardiac output (CO) [5,7] and to dP/dtmax in animal models [8], provide 5 information on myocardial dysfunction after acute coronary syndrome [9,10] and can assess the clinical status 6 of patients with heart failure (HF) [11].…”

mentioning

confidence: 99%

Ballistocardiography and seismocardiography detection of hemodynamic changes during simulated obstructive apnea

et al. 2020

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Objective. To investigate if modern Seismocardiography (SCG) and Ballistocardiography (BCG) are useful 3 in the detection of hemodynamic changes occurring during simulated obstructive apneic events.Methods. Forty-seven healthy volunteers performed a voluntary maximum Mueller maneuver (MM) for 10 5 seconds, and SCG and BCG signals were simultaneously taken. The kinetic energy (KE) of a set of cardiac 6 cycle before and during the apneic episode was automatically computed from the rotational (Rot) and linear 7 (Lin) channels of the SCG and BCG waveforms and its temporal integral (iK) was derived (unit of measure: 8 microJoules.second (µJ.s)). Estimated transmural pressure (ePTM) was assessed as the difference between 9 systemic blood pressure and maximal inspiratory pressure (MIP). The Wilcoxon sign-rank test was used to 10 evaluate differences in energy measurements between normal respiration and the loaded inspiration maneuver. 11Cardiac kinetic energies and the MIP produced during the MM were compared by linear regression analysis 12 following log transformation in order to assess the correlation between variables. 13 Results. The Rot BCG during normal breathing increased from 1.1[0.8; 1.4] to 1.9[1.4; 4.3] µJ.s during MM 14 (p<0.001). Meanwhile, Rot SCG increased from 54 [31; 92] to 84 [44; 153] µJ.s, (p<0.001). The iK Rot BCG 15 and Rot SCG of a set of cardiac cycles during the MM was negatively associated with the MIP (r: -0.59, p<0.001 16 and r: -0.53, p=0.001 for Rot BCG and Rot SCG , respectively). When ePTM was considered, this association became 17 positive (r: +0.58, p<0.001 and r: +0.60, p<0.001, for Rot BCG and Rot SCG , respectively). When the iKLIN was 18 considered as the comparative factor, correlations with MIP and ePTM were weak and non significant. Men has 19 higher values of iK than women. 20 Conclusion. Simulated obstructive apnea elicits large rotational iK swings, which are related to the intensity 21 of the inspiratory effort and, as such, to the intensity of the left ventricular afterload. Computation of cardiac 22 kinetic energy through BCG and SCG may shed further light on the impact of obstructive respiratory events 23 on the cardiovascular system.

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“…Regarding the power metric, the maximal absolute value is taken to generate P Max for both SCG and BCG according to Eqs. (9) and (10). The metrics of interest described so far are computed using a specific toolbox written in MATLAB (version 9.5 R2018b, MATHWORKS).…”

Section: Scg and Bcg Signal Acquisitionmentioning

confidence: 99%

Assessment of left ventricular twist by 3D ballistocardiography and seismocardiography compared with 2D STI echocardiography in a context of enhanced inotropism in healthy subjects

Morra

Hossein

Rabineau

et al. 2021

Sci Rep

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Ballistocardiography (BCG) and Seismocardiography (SCG) assess the vibrations produced by cardiac contraction and blood flow, respectively, by means of micro-accelerometers and micro-gyroscopes. From the BCG and SCG signals, maximal velocities (VMax), integral of kinetic energy (iK), and maximal power (PMax) can be computed as scalar parameters, both in linear and rotational dimensions. Standard echocardiography and 2-dimensional speckle tracking imaging echocardiography were performed on 34 healthy volunteers who were infused with increasing doses of dobutamine (5–10–20 μg/kg/min). Linear VMax of BCG predicts the rates of left ventricular (LV) twisting and untwisting (both p < 0.0001). The linear PMax of both SCG and BCG and the linear iK of BCG are the best predictors of the LV ejection fraction (LVEF) (p < 0.0001). This result is further confirmed by mathematical models combining the metrics from SCG and BCG signals with heart rate, in which both linear PMax and iK strongly correlate with LVEF (R = 0.7, p < 0.0001). In this setting of enhanced inotropism, the linear VMax of BCG, rather than the VMax of SCG, is the metric which best explains the LV twist mechanics, in particular the rates of twisting and untwisting. PMax and iK metrics are strongly associated with the LVEF and account for 50% of the variance of the LVEF.

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The Ballistocardiogram in Myocardial Infarction: A Study of One Hundred Cases

Cited by 14 publications

References 15 publications

The Ballistocardiogram in the Diagnosis of Coronary Arterial Disease

The Ballistocardiogram in the Diagnosis of Coronary Arterial Disease

Ballistocardiography and seismocardiography detection of hemodynamic changes during simulated obstructive apnea

Assessment of left ventricular twist by 3D ballistocardiography and seismocardiography compared with 2D STI echocardiography in a context of enhanced inotropism in healthy subjects

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