In the setting of direct PCI in acute STEMI, administration of carvedilol before reperfusion appears not to be superior to metoprolol with respect to myocardial injury and improvement of global and regional LV function. The study documents equivalent improvement of LV function and similar kinetics of cardiac and neurohumoral markers in pts. with acute STEMI undergoing direct PCI if the pts. were immediately treated with either carvedilol or metoprolol. Thus, superiority of carvedilol in experimental studies did not translate into a clinical benefit.
In a low-risk cohort of patients with AMI undergoing successful reperfusion therapy, plasma NT-proBNP concentrations are elevated for at least ten days. The prognostic value of early plasma NT-proBNP should be further evaluated concerning its ability to facilitate risk stratification of infarct patients.
In a consecutive series of patients with ACS undergoing PTCA with provisional stenting the occurrence of early target vessel reocclusion and luminal renarrowing is lower than previously reported for this subset of patients treated by PTCA alone. Adverse outcome is related to absence of stents, angiographic factors (residual stenosis, lesion length, minimal lumen diameter after procedure) and patient-related factors such as diabetes and hypertension.
With suicidal intent a 72-year-old man swallowed 5.8 g aminophylline in a non-retard solution. The theophylline plasma level on admission was 120 mg/l. He had to be intubated when respiratory arrest occurred. Within the first hour he developed cerebral seizures, polymorphous ventricular premature systoles, atrial fibrillation with an irregular ventricular rate and, finally, recurrent episodes of ventricular fibrillation with prolonged circulatory shock (heart rate 120-140/min with a systolic blood pressure of 60 mm Hg for 3 hours) and severe metabolic acidosis (potassium 2.28 mmol/l, phosphate 0.21 mmol/l, pH 7.03, base excess -20.8 mmol/l). He was treated with massive fluid replacement (6.2 l in the first 12 hours), electrolyte substitution to counteract the marked hypokalaemia and hypophosphataemia, repeated defibrillation and antiarrhythmic drugs (lidocaine 240 mg/h and metoprolol twice 5 mg), as well as anticonvulsive treatment (diazepam, 10 mg twice, followed by midazolam 5 mg/h). Detoxication measures consisted initially of gastric lavage followed by high-dosage enteric administration of charcoal (210 g over 36 h), as well as haemoperfusion for 4 h. Full recovery was achieved and the patient was discharged in good health after 3 weeks.
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