Plakht Y, Gilutz H, Shiyovich A. The association of concomitant serum potassium and glucose levels and in-hospital mortality in patients with acute myocardial infarction (AMI). Soroka acute myocardial infarction II (SAMI-II) project.
Int J Cardiol 2019;
287:39-45. [PMID:
30803888 DOI:
10.1016/j.ijcard.2019.02.031]
[Citation(s) in RCA: 3] [Impact Index Per Article: 0.6] [Reference Citation Analysis] [Abstract] [Key Words] [Track Full Text] [Journal Information] [Submit a Manuscript] [Subscribe] [Scholar Register] [Received: 05/24/2018] [Revised: 01/29/2019] [Accepted: 02/15/2019] [Indexed: 01/08/2023]
Abstract
BACKGROUND
Acute myocardial infarction (AMI) is associated with significant systemic metabolic changes. These changes include increased plasma concentrations of counter-regulatory hormones and changes in potassium (K, mEq/L) and glucose (mg/dL) levels. The latter are associated with outcomes and investigated as potential focus for intervention; glucose-insulin‑potassium (GIK) solution.
OBJECTIVES
To evaluate the associations of concomitant K and glucose (K/glucose) levels with in-hospital mortality in AMI patients.
METHODS
AMI patients hospitalized in a tertiary Medical Center through 2002-2012 were studied. K/glucose levels were divided into equally sized categories. The intermediate category (glucose 124-143 mg/dL, K 4-4.9 mEq/L) was the reference group. The associations of these tests with the outcome were assessed using Generalized Estimating Equations model which included the interaction of K and glucose levels, adjusted for the patient's baseline characteristics and other laboratory results.
RESULTS
17,670 AMI admissions (mean age 67.8 ± 4.0 years, 66.6% males, mortality rate 7.7%) were included; 112,531 results of K/glucose tests were recorded. Univariate and multivariate analyses showed that K/glucose levels were significantly associated with in-hospital mortality, with highest risk being in patients with concomitant low K (<3.7 mEq/L) and high glucose (≥217 mg/dL), adjOR = 2.53. It seems that low-normal glucose levels attenuate the increased risk associated with low K.
CONCLUSIONS
The highest independent risk for mortality is found with low K and concomitant high glucose levels. Additional studies evaluating mechanisms and therapeutic interventions in K/glucose levels in this setting are warranted.
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