I A C van der Bilt

Publications (3)12.54 Total impact

• Source

  Available from: William Peter Vandertop

  Article: Impact of cardiac complications on outcome after aneurysmal subarachnoid hemorrhage: a meta-analysis.

  I A C van der Bilt, D Hasan, W P Vandertop, A A M Wilde, A Algra, F C Visser, G J E Rinkel
  [show abstract] [hide abstract]
  ABSTRACT: Impact of cardiac complications after aneurysmal subarachnoid hemorrhage (SAH) remains controversial. We performed a meta-analysis to assess whether EKG changes, myocardial damage, or echocardiographic wall motion abnormalities (WMAs) are related to death, poor outcome (death or dependency), or delayed cerebral ischemia (DCI) after SAH. Articles on cardiac abnormalities after aneurysmal SAH that met predefined criteria and were published between 1960 and 2007 were retrieved. We assessed the quality of reports and extracted data on patient characteristics, cardiac abnormalities, and outcome measurements. Poor outcome was defined as death or dependence by the Glasgow Outcome Scale (dichotomized at < or = 3) or the modified Rankin scale (dichotomized at > 3). If studies used another dichotomy or another outcome scale, we used the numbers of patients with poor outcome provided by the authors. We calculated pooled relative risks (RRs) with corresponding 95% confidence intervals for the relation between cardiac abnormalities and outcome measurements. We included 25 studies (16 prospective) with a total of 2,690 patients (mean age 53 years; 35% men). Mortality was associated with WMAs (RR 1.9), elevated troponin (RR 2.0) and brain natriuretic peptide (BNP) levels (RR 11.1), tachycardia (RR 3.9), Q waves (RR 2.9), ST-segment depression (RR 2.1), T-wave abnormalities (RR 1.8), and bradycardia (RR 0.6). Poor outcome was associated with elevated troponin (RR 2.3) and creatine kinase MB (CK-MB) levels (RR 2.3) and ST-segment depression (RR 2.4). Occurrence of DCI was associated with WMAs (RR 2.1), elevated troponin (RR 3.2), CK-MB (RR 2.9), and BNP levels (RR 4.5), and ST-segment depression (RR 2.4). All RRs were significant. Markers for cardiac damage and dysfunction are associated with an increased risk of death, poor outcome, and delayed cerebral ischemia after subarachnoid hemorrhage. Future research should establish whether these cardiac abnormalities are independent prognosticators and should be directed toward pathophysiologic mechanisms and potential treatment options.
  Neurology 02/2009; 72(7):635-42. · 8.31 Impact Factor
• Article: Pulmonary embolism causes endomyocarditis in the human heart.

  M P V Begieneman, F R W van de Goot, I A C van der Bilt, A Vonk Noordegraaf, M D Spreeuwenberg, W J Paulus, V W M van Hinsbergh, F C Visser, H W M Niessen
  [show abstract] [hide abstract]
  ABSTRACT: Pulmonary embolism (PE) is a significant cause of morbidity and mortality. In a recent study in patients with PE, an increased level of macrophages was found in the right ventricle. To evaluate the presence of inflammatory cells, myocytolysis and intracavitary thrombi in the left and right ventricle of patients who died because of PE as a putative new source of heart failure. 22 patients with PE were studied. For comparison, eight controls and 11 patients who died of chronic pulmonary hypertension (PHT) were used. Slides of the left and right ventricle were stained with antibodies, identifying neutrophilic granulocytes, lymphocytes and macrophages, which were subsequently quantified. Myocytolysis was visualised using complement staining. Thrombi were identified by conventional staining. Compared with controls, in patients with PE a significant increase in extravascular localisation of all three inflammatory cells was found both in the right and left ventricle, coinciding with myocytolysis, indicative for myocarditis. No increase in inflammatory cells was found in patients with PHT. Endocardial cellular infiltration was also found, partly coinciding with the presence of ventricular thrombi. In patients with PE, endomyocarditis and intracavitary thrombi in the left and right ventricle were found. These abnormalities may be an additional new explanation for the observed cardiac enzyme release and functional abnormalities of the heart in these patients and may contribute to the morbidity and mortality of the disease.
  Heart (British Cardiac Society) 05/2008; 94(4):450-6. · 4.22 Impact Factor
• Article: Rationale of the SEAS study: Serial Echocardiography After Subarachnoid haemorrhage, a prospective national, multicentre, multidisciplinary, cohort study to evaluate cardiac abnormalities following intracranial haemorrhage

  I A C van der Bilt, D Hasan, G.J.E. Rinkel, A.A.M. Wilde, F C Visser
  [show abstract] [hide abstract]
  ABSTRACT: The SEAS study is a prospective national, multicentre, multidisciplinary, cohort study in which the cardiac abnormalities following aneurysmal subarachnoid haemorrhage are studied. Incidence, clinical implications and predictive variables of cardiac abnormalities following aneurysmal subarachnoid haemorrhage will be studied. Cardiac abnormalities are defined as ECG changes, echocardiographic function abnormalities, and biochemical changes. A total of 350 patients will be included over a period of three years including follow-up.