Zusammenfassung
Fragestellung
Wir untersuchten die Frage, ob die Hyperglykämie, definiert durch den klinisch relevanten Grenzwert 6,67 mmol/l (120 mg/dl), die 15- und 180-Tages-Mortalität des akuten Koronarsyndroms (ACS) beeinflusst.
Methoden
Retrospektiv wurden 161 Patienten (Pt.), die im Rahmen eines ACS vorstellig wurden, anhand des Blutzuckerspiegels (BZ) bei Aufnahme in 2 Gruppen geteilt: Gruppe A: BZ ≥6,67 mmol/l (120 mg/dl), Gruppe B: BZ <6,67 mmol/l. Ermittelt wurden die kardiovaskulären Risikofaktoren, Standard-12-Kanal-EKG, Kreatinkinase, Troponin I, CRP, Killip-Klassifikation, TIMI-Fluss-Phänomene, Gefäßstatus, linksventrikuläre Ejektionsfraktion, Überlebenszeit zum Zeitpunkt 15 und 180 Tage.
Ergebnisse
Bei Aufnahme befanden sich 104 der 161 Pt. in einer hyperglykämen Stoffwechsellage; 57 Patienten gehören der Vergleichsgruppe an. Es besteht ein signifikant gehäuftes Auftreten der kardiovaskulären Risikofaktoren arterielle Hypertonie, Diabetes mellitus sowie ein erhöhter Frauenanteil in der Gruppe der hyperglykämen Patienten. Ein signifikanter Unterschied zwischen den Blutzuckergruppen besteht nicht. Innerhalb der ersten 15 Tage verstarben 7 Patienten, von denen 6 zur Gruppe der hyperglykämen Patienten zählen und eine Hyperlipoproteinämie aufweisen.
Schlussfolgerungen
Da bei 6 der 7 innerhalb der ersten 15 Tage Verstorbenen eine Hyperlipoproteinämie vorliegt, kann die Notwendigkeit einer aggressiven antihyperlipidämischen Therapie bestehen. Die Hyperglykämie stellt weder einen unabhängigen Prädiktor der 15- noch der 180-Tages-Mortalität dar. Die Sterblichkeit ist mit dem vermehrten Auftreten des kardiogenen Schocks, Ejektionsfraktionen <30% und TIMI-I-Flüssen assoziiert.
Abstract
Background
Recent studies have shown increased mortality in patients admitted for acute coronary syndrome (ACS) who exhibit any high levels indicating hyperglycemia (e.g., 180 or 200 mg/dl). Based on this observation we investigated the question of whether hyperglycemia, defined as the clinically relevant level of 6.67 mmol/l (120 mg/dl), has an effect on 15- and 180-day mortality.
Methods
A total of 161 patients who presented with ACS were retrospectively divided into two groups based on the blood glucose level (BGL) upon admittance: group A: BGL ≥ 6.67 mmol/l (120 mg/dl) and group B: < 6.67 mmol/l. Cardiovascular risk factors, standard 12-channel ECG, creatine kinase, troponin I, C-reactive protein, Killip classification, TIMI 1 flow phenomena, vascular status (one- to three-vessel disease), left ventricular ejection fraction, and survival at 15 and 180 days were determined. For statistical analysis the mean, standard deviation, Student’s t test, chi-square test, Fisher’s exact test, long-rank test, and Kaplan-Meier analysis were employed (significance set at p < 0.05).
Results
Of the 161 patients, 104 (64.6%) were considered to be hyperglycemic upon admission; 57 patients (35.4%) were in the control group. There was a significantly high occurrence of the cardiovascular risk factors hypertension (p = 0.05) and diabetes mellitus (p < 0.001) and a high proportion of women (p = 0.04) in the group of hyperglycemic patients. There was no significant difference between the two groups with regard to 180-day (p = 0.49) or 15-day mortality (p = 0.22). Data from nine patients (5.6%) were deleted. Seven patients (4.3%) died within the first 15 days, all in cardiogenic shock (100%), six of whom were categorized in the group of hyperglycemic patients and exhibited hyperlipoproteinemia. These patients who died with the first 15 days demonstrated a significantly higher incidence of TIMI 1 flow phenomena (p = 0.01), left ventricular ejection fraction < 30% (p < 0.001), and cardiogenic shock (p < 0.001).
Conclusions
In the context of ACS, hyperglycemia occurs more frequently in women, diabetics, and subjects with arterial hypertension. Since hyperlipoproteinemia was present in five of the six patients (85.7%) who died within the first 15 days, there could be a need for aggressive antihyperlipidemic treatment with the goal of reducing mortality. Hyperglycemia does not constitute an independent predictor of either 15- or 180-day mortality. The mortality rate is associated with increased occurrence of cardiogenic shock, ejection fractions < 30%, and TIMI 1 flows.
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Wirdemann, H., Prull, M., Sasko, B. et al. Hyperglykämie. Kardiologe 4, 488–496 (2010). https://doi.org/10.1007/s12181-010-0303-1
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DOI: https://doi.org/10.1007/s12181-010-0303-1