Radiographic findings of patients with right ventricular infarction: prognostic evaluation

Vandelli

Journal of Ultrasound in Medicine

2000

The aim of the present study was to assess the utility of the myocardial performance index in patients with right ventricular infarction. During the study period, 120 patients were evaluated: 50 patients had a right ventricular infarction and 70 patients had an inferior left ventricular infarction without right ventricular involvement. On admission, an echocardiogram was obtained from all patients prior to the initiation of thrombolytic therapy. The right ventricular myocardial performance index was calculated, as were the Doppler‐derived parameters of the right side of the heart. All patients with right ventricular infarction had undergone a right ventricular dilation, compared with 70 patients with left ventricular infarction (right ventricular end diastolic diameter 32 ± 13 versus 26 ± 24 mm; P < 0.01) and increased areas (diastolic area 24.8 ± 9.9 versus 15.1 ± 6.8 cm2; P < 0.01). Tricuspid regurgitation was detected in 26 patients. The mean peak velocity of tricuspid regurgitation was 3.8 ± 0.8 m/s. The Doppler intervals, isovolumetric contraction times (136 ± 30 versus 49 ± 11 ms; P < 0.01), and relaxation times (71 ± 28 versus 37 ± 9 ms; P < 0.01) were prolonged in patients with right ventricular infarction, whereas the ejection time was significantly reduced (250 ± 31 versus 330 ± 26 ms; P < 0.001). The myocardial performance index was significantly increased in patients with right ventricular infarction (0.85 ± 0.2 versus 0.26 ± 0.1; P < 0.01). The inferior vena cava collapse was reduced in all patients with right ventricular infarction (35 ± 20%). The right ventricular myocardial performance index was a useful indicator of right ventricular performance in patients with right ventricular infarction. The use of echocardiographic parameters of the right side of the heart and Doppler echocardiographic parameters of right ventricular function provides a reliable diagnosis of right ventricular infarction.

Section: Patientsmentioning

confidence: 99%

Doppler echocardiographic evaluation of right ventricular function in patients with right ventricular infarction.

Vandelli

Journal of Ultrasound in Medicine

2000

Law, Innovation and Technology

“…59 As a novel method of empirical inquiry, instead of starting with a question, Big Data reverses this process by first running the algorithms to look for patterns, and then retrospectively constructing hypotheses. 60 The seeming strength and comprehensiveness of this methodology relies on the magnitude of the datasets providing an oligoptic 61 view of full resolutionthe belief that 'with enough data, the numbers speak for themselves'. 62 There are some evident restrictions and limitations of the methodology of extracting knowledge out of patterns and correlations identified in large datasets.…”

Section: Challenge To Law As a Causative Enterprisementioning

confidence: 99%

The ‘rule of law’ implications of data-driven decision-making: a techno-regulatory perspective

Bayamlıoğlu

Leenes

2018

Techno-regulation is a prominent mechanism for regulating human behaviour. One type of techno-regulation concerns automated decision-making with legal effects. While automated decision-making (ADM) systems in the public domain have traditionally been based on conscious design of decisional norms, increasingly, Data Science methodologies are used to devise these norms. This data-driven approach causes frictions with the underlying principle of public-sector decision-making, namely adherence to the rule of law. In this paper we discuss three major challenges data-driven ADM poses to the Rule Law: law as a normative enterprise, law as a causative enterprise and law as a moral enterprise.

Relationship between mean right atrial pressure and doppler parameters in patients with right ventricular infarction

Castelli

2000

Clinical Cardiology

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