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Martin Veilleux

Publications and source records attributed to Martin Veilleux.

3 recordsLinked to original sources

Post-ictal rage and aggression: a video-EEG study.

Post-ictal rage and aggression have been mentioned in the literature but have rarely been documented by video-EEG recording. We studied a patient with dramatic, episodic, seizure-related rage and violence. This mentally retarded man had a lifelong history of seizures. He developed increasing episodic rage and aggression. Caregivers were afraid of him, although there was no record of directed violence. In one of these episodes he fractured his tibia and fibula. Interictal discharges arose from both temporal areas independently. He had focal seizures with secondary generalization. Immediately after cessation of the ictal discharge he became greatly agitated, with undirected aggression, loud screaming, kicking and fighting against the restraints. A video sequence illustrates the behavior. Imaging studies showed bilateral, periventricular, nodular heterotopia in the lateral aspect of both temporal horns and the trigones. Increasingly frequent, severe bursts of rage and aggression were proven to be post-ictal. Documented attacks occurred while he was restrained and this may have been a factor in their severity. Such attacks however, have been described while he was not restrained and these increased in severity and frequency over time. Developmental abnormalities with periventricular, nodular heterotopia in the region of the trigones and inferomesial temporal areas are considered to be causally related to his retardation and epilepsy. [Published with video sequences].

Adult↗

Two-dimensional echocardiography estimation of right ventricular ejection fraction by wall motion score index.

BACKGROUND: Radionuclide angiography (RNA) and echocardiography (biplane Simpson method) are the most accepted methods for right ventricular ejection fraction (RVEF) evaluation. The authors tried to determine a new method to measure RVEF based on wall motion score index (WMSI). OBJECTIVES: One hundred forty-one patients with RV dysfunction had transthoracic echocardiography (TTE) evaluation of the right ventricle. In a first group of 54 patients, a correlation between RVEF using the biplane Simpson method (four chamber and two chamber [4C+2C]) and RV-WMSI was established from a polar map using an eight-segment model to find a regression equation. With the second group of 51 subsequent patients, this equation (RVEF=73.07-20.7 x WMSI), comparing the RVEF-WMSI with the biplane Simpson RVEF (4C+2C), was validated. In a third group of 36 consecutive patients with abnormal RV contractility, the RVEF was calculated by RNA and this RVEF was correlated to the RV-WMSI. RESULTS: The first group of 54 patients had a correlation coefficient of 0.84 between WMSI and RVEF (biplane Simpson method). The results from the second group of 51 patients with RVEF derived from the estimated regression equation correlated well with the biplane Simpson RVEF (r=0.84). The correlation coefficient for these two groups taken together (105 patients), that is, between WMSI and RVEF (biplane Simpson method), was 0.92. The third group of 36 patients with RNA-EF displayed a correlation coefficient of 0.83 with RV-WMSI. CONCLUSION: This new semiquantitative method for estimating RVEF from RV-WMSI is easy to use in routine TTE and shows an excellent correlation with the biplane Simpson method and RNA.

Adolescent↗

A new tool for estimating left ventricular ejection fraction derived from wall motion score index.

BACKGROUND: Radionuclide angiography (RNA) and echocardiography (biplane Simpson method) are the most accepted techniques for left ventricular ejection fraction (LVEF) assessment. A new method to evaluate LVEF based on the regional wall motion assessment of the LV was attempted. OBJECTIVE: To develop a simple method for LVEF estimation using wall motion score index (WMSI) with transthoracic echocardiography (TTE). METHODS: Two hundred and forty-three patients with abnormal LV contractility had TTE and RNA performed less than three days apart. The WMSI was calculated in all patients using the 16-segment model as proposed by the American Society of Echocardiography. For the first 150 patients, a correlation between LV WMSI and RNA EF was established to create a regression equation. This regression equation (RNA LVEF=92.8-25.8xWMSI) was used on 93 consecutive patients to compare this equation with RNA EF. From the total cohort (243 patients), three subgroups were studied specifically: atrial fibrillation (AF) (n=50 patients), dyskinesia (DK) (n=40 patients) and aneurysm (AN) (n=42 patients). RESULTS: Correlation between RNA EF and WMSI in the first 150 patients was r=0.82. In the second group of 93 consecutive patients, WMSI EF derived from the estimated regression equation correlated well with RNA EF (r=0.86). Correlation remained high in the three subgroups: AF (r=0.87), DK (r=0.87) and AN (r=0.80). In the 111 patients without DK, AN or AF correlation between RNA and the studied method was even higher (r=0.91). In a random subgroup of 54 patients, RNA was compared with the biplane Simpson method (49 of 54 patients, r=0.82). In the same subgroup of 54 patients, the score was modified to allow for mild hypokinesia (score=1.5) and severe hypokinesia (score=2.5) (54 of 54 patients, r=0.83). CONCLUSION: LVEF assessment by this new simple mathematical model using the WMSI is feasible and easy to use during routine TTE. It has excellent correlation with other methods such as biplane Simpson and RNA.

Adult↗