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The prognostic implication of chronic hyperglycemia in acute ischemic strokes of different etiologic subtypes Cover

The prognostic implication of chronic hyperglycemia in acute ischemic strokes of different etiologic subtypes

Open Access
|Apr 2026

Figures & Tables

Fig. 1-

HbA1c distribution according to the outcomes among, a; all patients with Acute ischemic stroke, b; with large artery atherosclerosis (LAA) stroke subtype, c; cardioembolic (CE) stroke subtype, d; small vessel occlusive (SVO) stroke subtype

Fig. 2-

ROC analysis demonstrating an association of HbA1c with functional recovery in different TOAST subtypes

Figure. 3-

Models (including all variables demonstrating significant association during univariate analysis; age, NIHSS, DM, HTN, IHD, previous stroke, AF, LAA, and CE subtypes) predicting poor functional recovery in patients with acute ischemic stroke, model 1-without incorporating HbA1c, model 2-with HbA1c

Characteristics of patients, including demographic and clinical characteristics according to different TOAST subtypes

VariablesAll patients 518Large artery atherosclerosis type 178Cardioembolic type 86Small vessel occlusive type 155Other determined 27Undetermined 72p value
Men383(74)144(80.9)55(64)118(76.1)18(66.7)48(66.7)0.017
Age
means±SD56.4±14.459.6±12.759±16.654.2±12.741.5±13.055.7±15.5<0.001
median (IQR)56(46–66)58(50–69)60(45.7–74.2)52.5(44–62)40(34–48.7)58(42–67)
Diabetes mellitus347(67)143(80.3)51(59.3)102(65.8)6(22.2)45(62.5)<0.001
Hypertension344(66.4)139(78.1)49(57)102(65.8)13(48.1)41(56.9)<0.001
IHD108(20.8)31(17.4)42(48.8)22(14.2)3(11.1)10(13.9)<0.001
Dyslipidemia254(49)97(54.5)41(47.7)74(47.7)9(33.3)33(45.8)0.26
Previous stroke/TIA92(17.8)46(25.8)12(14)18(11.6)6(22.2)10(13.9)0.008
Smoking135(26.1)52(29.2)20(23.3)42(27.1)7(25.9)14(19.4)0.55
Arrived within therapeutic window235(45.4)61(34.3)55(64)71(45.8)13(48.1)35(48.6)<0.001
NIHSS
means±SD7.7±5.98.8±6.210.3±6.84.8±3.18.1±5.38.5±6.2<0.001
median (IQR)6(3–10)7(4–13)9(4–16)4(3–7)7(3–12)7(3.2–12)
Hyperacute treatment158(30.5)49(27.5)35(40.7)35(22.6)13(48.1)26(36.1)0.004
Territorial anterior circulation infarct46(8.9)25(14)12(14)05(18.5)4(5.6)<0.001
Partial anterior circulation infarct202(39)90(50.6)58(67.4)-12(44.4)40(55.6)<0.001
Posterior circulation infarct97(18.7)51(28.7)14(16.3)-8(29.6)22(30.6)<0.001
Lacunar infarct168(32.4)9(5.1)-155(100) 4(5.6)<0.001
HbA1c
means±SD7.9±2.58.69±2.67.23±2.37.86±2.36.30±1.67.70±2.5<0.001
median (IQR)7.1(5.9–9.7)8.15(6.5–10.9)6.4(5.6–8.3)7.1(5.9–9.9)5.8(5.4–6)6.9(5.7–9.4)
Poor functional recovery181(35)85(47.8)41(47.7)24(15.5)6(22.2)25(34.7)<0.001
Good functional recovery337(65)93(52.2)45(52.3)131(84.5)21(77.8)47(65.3)<0.001

Distribution of demographic and other clinical variables including HbA1c levels between patients with good and poor functional recovery

Variable (n) Total (518)Good functional recovery 337 (65.1%)Poor functional recovery 181 (34.9%)*Odds Ratio95% confidence intervalP value
Age (mean±SD)54.5±14.0760±14.49- <0.001
Male (383)254 (75.3)129 (71.3)0.870.67–1.130.34
Hypertension (344)212 (62.9)132 (72.9)1.361.03–1.780.02
Diabetes mellitus (347)213 (63.2)134 (74)1.401.06–1.850.012
Ischemic heart disease disease (108)61 (18.1)47 (26)1.331.03–1.720.03
Dyslipidemia (254)160(47.5)94(51.9)1.120.88–1.420.33
Prior H/O stroke (92)46 (13.6)46(25.5)1.571.23–2.020.001
Atrial fibrillation (45)20(5.9)25(13.8)1.831.36–2.470.001
NIHSS on presentation (Mean±SD)5.31±4.0012.57±6.0- <0.001
TOAST subtypes
Large artery atherosclerosis (178)93(27.6)85(46.9)1.691.34–2.12<0.001
Cardio-embolic (86)45(13.4)41(22.7)1.471.13–1.900.007
Small vessel occlusion (155)131(38.8)24(13.3)0.350.24–0.52<0.001
Other determined (27)21(6.2)06(3.3)0.620.30–1.270.15
Undetermined (72)47(13.9)25(13.8)0.990.70–1.390.96
Territorial anterior circulation infarct (46)5(1.5)41(22.7)3.002.53–3.56<0.001
Partial anterior circulation infarct (202)121(35.9)81(44.8)1.261.00–1.600.04
Lacunar infarct (168)142(42.1)27(14.9)0.360.25–0.52<0.001
Posterior circulation infarct (97)66(19.6)31(17.1)0.890.65–1.230.49
Hyper acute treatment (158)103(30.6)55(30.4)0.980.76–1.260.88
HbA1c (Mean±SD)7.57±2.258.61±2.83 <0.001

Multiple models of Logistic regression analysis for association of HbA1c with poor functional recovery in all patients with acute ischemic stroke

VariablesOdds ratio95% confidence intervalP value
Model 1, adjusted for NIHSS
HbA1c1.291.17–1.41<0.001
NIHSS1.321.25–1.39<0.001
Model 2, adjusted for CE subtype
HbA1c1.201.11–1.29<0.001
CE subtype (yes versus no)2.301.41–3.750.001
Model 3, adjusted for LAA subtype
HbA1c1.141.06–1.23<0.001
LAA subtype (yes versus no)2.021.37–2.98<0.001
Model 4, adjusted for SVO subtype
HbA1c1.181.09–1.27<0.001
SVO subtype (yes versus no)0.230.14–0.38<0.001
Model 5, adjusted for subtypes associated with poor recovery (LAA and CE)
HbA1c1.161.08–1.26<0.001
LAA2.911.90–4.47<0.001
CE3.662.15–6.22<0.001
Model 6, Model adjusted for risk factors
HbA1c1.251.13–1.39<0.001
Age1.021.00–1.030.01
DM0.590.32–1.080.09
HTN1.290.81–2.040.27
IHD1.480.91–2.410.11
AF2.521.26–5.060.009
Prior stroke1.320.76–2.290.31
DOI: https://doi.org/10.2478/rjim-2026-0007 | Journal eISSN: 2501-062X | Journal ISSN: 1220-4749
Language: English
Submitted on: Feb 19, 2026
Published on: Apr 16, 2026
In partnership with: Paradigm Publishing Services
Publication frequency: 4 issues per year

© 2026 Azra Zafar, Mustafa Al Qarni, Rizwana Shahid, Ali Hafed Al Hashem, Aishah Albakr, Erum Shariff, Zaid Waqar, published by N.G. Lupu Internal Medicine Foundation
This work is licensed under the Creative Commons Attribution-NonCommercial-NoDerivatives 3.0 License.

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