The Prognostic Value of the Triglyceride-Glucose Index in Forecasting Ten-Year Major Adverse Cardiovascular Events in Non-Diabetic Patients with Acute Myocardial Infarction Undergoing Percutaneous Coronary Intervention.

OBJECTIVE: This study aimed to explore the association between the triglyceride-glucose (TyG) index and major adverse cardiovascular events (MACE) over a ten-year period in non-diabetic patients with acute myocardial infarction (MI) undergoing primary percutaneous coronary intervention (PCI). METHODS: We included 375 consecutive non-diabetic patients presenting with acute MI who underwent primary PCI. The TyG index was calculated and patients were divided based on a cut-off value of ≥ 8.84 into high and low TyG index groups. The incidence of MACE, including all-cause mortality, target vessel revascularization, reinfarction, and rehospitalization for heart failure, was assessed over 10 years. RESULTS: Over the next 10 years, patients who underwent PCI for acute MI experienced a significantly higher incidence of MACE in the group with a high TyG index (≥ 8.84) (P = 0.004). Multivariable analysis revealed that the TyG index independently predicted MACE in these patients [odds ratio = 1.64; 95% confidence interval (CI): 1.22-2.21; P = 0.002]. Analysis of the receiver operating characteristic curve indicated that the TyG index effectively predicted MACE in patients with acute MI following PCI, with an area under the curve of 0.562 (95% CI: 0.503-0.621; P = 0.038). CONCLUSION: This study established a correlation between high TyG index levels and an elevated risk of MACE in non-diabetic patients with acute MI. The findings suggest that the TyG index could be a reliable indicator of clinical outcomes for non-diabetic acute MI patients undergoing PCI.

Impact of triglyceride-glucose index on intracoronary thrombus burden in ST-elevation myocardial infarction patients undergoing primary percutaneous coronary intervention.

BACKGROUND AND AIMS: We aimed to investigate the relationship between triglyceride glucose (TyG) index and intracoronary thrombus burden in patients with ST-elevation myocardial infarction (STEMI) who underwent primary percutaneous coronary intervention (PCI). METHODS AND RESULTS: A total of 468 consecutive patients who were admitted with STEMI and underwent primary PCI were included in the study. TyG index was calculated as ln [fasting triglycerides (mg/dL) × fasting plasma glucose (mg/dL)/2]. According to the angiographic reclassified thrombolysis in myocardial infarction (TIMI) thrombus grade, patients were divided into two groups as small thrombus burden (STB) with TIMI thrombus grade 0-3, and large thrombus burden (LTB) with TIMI thrombus grade 4-5. TyG index was significantly higher in the LTB group than in the STB group (9.11 ± 0.86 vs 8.89 ± 0.62; p = 0.002). In multivariate analysis, TyG index was found to be an independent predictor of LTB in STEMI patients who underwent primary PCI [OR (95 % CI): 1.470 (1.090-1.982), p = 0.012]. The area under the curve (AUC) of TyG index predicting LTB was 0.568 (95 % CI 0.506-0.631; p = 0.023), with the best cut-off value of 8.87. In the classification according to TyG index cut-off value, the frequency of LTB was found to be significantly higher in the high TyG index group than in the low TyG index group (33.6 % vs 21.2 %; p = 0.003). CONCLUSION: TyG index, a valid surrogate marker of insulin resistance, is an independent predictor of LTB in STEMI patients who underwent primary PCI and can be used as an indicator of increased intracoronary thrombus burden.

Short and Long-Term Prognostic Significance of Galectin-3 in Patients with ST-Elevation Myocardial Infarction Undergoing Primary Percutaneous Coronary Intervention.

This study evaluated the short and long-term prognostic value of galectin-3 in patients with ST-segment elevation myocardial infarction (STEMI) who underwent primary percutaneous coronary intervention (PCI). Patients (n = 143) were admitted with STEMI and followed up for 2 years. The study population was divided into high and low galectin-3 groups based on the admission median value of serum galectin-3. Primary clinical outcomes consisted of cardiovascular (CV) mortality, non-fatal reinfarction, stroke, and target vessel revascularization (TVR). CV events were recorded in hospital and at 1 and 2 years. The primary clinical outcomes (in-hospital, 1 year and 2 year) were significantly higher in the high galectin-3 group. (P = .008, P = .004, P = .002, respectively). High galectin-3 levels were also associated with heart failure development and re-hospitalization at both 1 year (P = .029, P = .009, respectively) and 2 years (P = .019, P = .036, respectively). According to Cox multivariate analysis, left ventricular ejection fraction (LVEF) was an independent predictor of 2-year cardiovascular mortality (P = .009), whereas galectin-3 was not (P = .291). Although high galectin-3 levels were not independent predictors of long-term CV mortality in patients with acute STEMI who underwent primary PCI, it was associated with short-term and long-term development of adverse CV events, heart failure, and re-hospitalization.

Prognostic significance of thrombus burden on short- and long-term clinical outcomes in patients with ST-elevation myocardial infarction undergoing primary percutaneous coronary intervention.

OBJECTIVE: Large thrombus burden (LTB) observed during ST-segment elevation myocardial infarction (STEMI) may end up with worse clinical outcomes. The relationship between LTB and long-term mortality and major adverse cardiac events (MACE) in STEMI patients undergoing percutaneous coronary intervention (PCI) is unclear. In this study, we aimed to investigate the relationship of LTB with short- and long-term mortality and MACE in STEMI patients undergoing PCI. METHODS: Thrombus burden (TB) was evaluated in STEMI patients who underwent PCI between December 2010 and April 2012. After infarct-related arterial flow was restored, TB was reclassified. LTB was defined as thrombus with the largest dimension of at least two vessel diameters. Patients were evaluated for 1-month, 1-year, and 10-year follow-ups in terms of MACE and mortality. RESULTS: Four hundred ninety-nine patients with clinical information and TB classification were analyzed. Three hundred sixty-six patients (73.3%) were in the small TB (STB) group, and 133 patients (26.7%) were in the LTB group. No-reflow (10.6% vs. 5.2%; P = 0.033) and stent thrombosis (7.5% vs. 3.3%; P = 0.042) were observed at a higher rate in the LTB group compared with the STB group. Thirty-day mortality (9.8% vs. 3.8%; P = 0.009) and MACE (16.5% vs. 9.6%; P = 0.030) were higher in the LTB group than in the STB group. Although 10-year MACE (56.4% vs. 46.2%; P = 0.044) was observed higher in the LTB group, no significant difference was observed between the two groups in terms of 10-year mortality (35.3% vs. 32.8%; P = 0.589). LTB was found to be an independent predictor for 10-year MACE (OR, 1.62; 95% CI, 1.01-2.61; P = 0.045). CONCLUSION: LTB was associated with short- and long-term clinical events in STEMI patients undergoing PCI, but the mortality effect disappeared at the end of 1 year. Nevertheless, hospitalizations due to heart failure became significant in 10-year follow-up.

Relationship between Aortic Arch Calcification, Detected by Chest X-Ray, and Renal Resistive Index in Patients with Hypertension.

OBJECTIVE: Aortic arch calcification (AAC) is a surrogate marker for arterial stiffness and hypertension-related vascular damage. Renal resistive index (RRI), a renal Doppler ultrasonography parameter, is used to assess renal hemodynamics. In this study, we aimed to evaluate the relationship between RRI and AAC in patients with hypertension. METHODS: Patients with hypertension underwent a chest X-ray and re nal Doppler ultrasonography. They were divided into two groups according to RRI (group 1: RRI ≥0.70; group 2: RRI < 0.70). Two examiners, blinded to the findings of RRI, reviewed the AAC in these patients. The kappa value was detected to be 0.781 and a p value < 0.001 was considered significant. RESULTS: The study included 289 hypertensive patients (mean age 63.87 ± 11.38 years). In 53.6% (n = 155) of the study subjects, RRI was observed to be ≥0.70. Patients with RRI ≥70 were older and had more prevalent AAC as well as left ventricular hypertrophy. A multiple linear regression analysis was carried out to test whether presence of AAC significantly predicted RRI. The results of the regression analysis indicated that presence of AAC significantly predicted RRI (ß = 0.053; p < 0.001). CONCLUSIONS: A strong and independent relationship was found between AAC on chest X-ray and RRI in patients with hypertension.

Assessment of relationship between galectin-3 and ambulatory ECG-based microvolt T-wave alternans in sustained systolic-diastolic hypertension patients.

OBJECTIVES: Galectin-3 is a marker associated with myocardial fibrosis and left ventricular myocardial index (LVMI). Myocardial fibrosis and LVMI have been reported in many studies to be associated with microvolt T-wave alternans (MTWA) positivity. In this study, galectin-3 levels of normotensive individuals and sustained systolic-diastolic hypertensive patients were compared and the association between galectin-3 levels and ambulatory ECG-based MTWA was investigated. METHODS: A total of 184 individuals were included in the study, among whom, 43 were normotensive and 141 had sustained systolic-diastolic hypertension without cardiovascular or chronic renal failure. Galectin-3, MTWA, and LVMI were evaluated in all participants. Galectin-3 levels of hypertensive and normotensive participants were compared. The association between galectin-3, MTWA, LVMI, and estimated glomerular filtration rate (eGFR) was investigated in hypertensive patients. RESULTS: LVMI and galectin-3 levels were higher among hypertensive patients compared with normotensives (94.9±26.8 vs. 76.4±22.9 g/m, 7.325±2.123 vs. 5.233±1.506 ng/ml; P<0.001, P<0.001). Correlation analysis carried out among the hypertensive patients showed that the galectin-3 level was correlated positively to LVMI, age, and MTWA positivity (r=0.396, P<0.001; r=0.358, P<0.001; r=0.361, P<0.001, respectively), whereas it was correlated negatively to eGFR and male sex (r=-0.364, P<0.001; r=-0.280, P=0.001, respectively). Multiple logistic regression analysis indicated that LVMI and galectin-3 showed an independent association with MTWA positivity in hypertensive patients (P=0.003 and 0.005, respectively). CONCLUSION: Increased galectin-3 levels are associated with ambulatory ECG-based MTWA positivity, decreased eGFR, and increased LVMI in hypertensive patients. This association may be used for risk classification in this patient group.

Long-term prognostic value of elevated pentraxin 3 in patients undergoing primary angioplasty for ST-elevation myocardial infarction.

OBJECTIVES: The prognostic value of pentraxin 3 (PTX3) has been documented in patients with acute coronary syndrome. However, its long-term prognostic value in acute ST-segment elevation myocardial infarction (STEMI) remains unclear. The aim of this study was to evaluate the prognostic value of PTX3 in patients with STEMI undergoing a primary percutaneous coronary intervention (PCI). METHODS: We prospectively enrolled 499 consecutive STEMI patients undergoing primary PCI. The high-PTX3 group (n=141) was defined as having values in the third tertile (≥3.2 ng/ml) and the low-PTX3 group (n=358) included patients with values in the lower two tertiles (<3.2 ng/ml). RESULTS: The patients in the high-PTX3 group were older (mean age 54.3±11.8 vs. 58.5±13.1 years, P=0.002). Higher in-hospital cardiovascular mortality and 2-year all-cause mortality rates were observed in the high-PTX3 group (9.9 vs. 2.8%, respectively, P<0.001; 21 vs. 6.2%, respectively, P<0.001). In a Cox multivariate analysis, a high admission PTX3 value (>3.2 ng/ml) was found to be an independent predictor of 2-year all-cause mortality (odds ratio: 2.3, 95% confidence interval: 1.20-4.90, P=0.025). CONCLUSION: These results suggest that a high admission PTX3 level was associated with increased in-hospital cardiovascular mortality and 2-year all-cause mortality in patients with STEMI undergoing primary PCI.

The nature and origin of intraocular metallic foreign bodies appearing after phacoemulsification.

In order to evaluate the nature and origin of metallic foreign bodies embedded in the iris after uneventful phacoemulsification, we aimed to produce metallic fragments by applying ultrasound power with the same phaco machine and handpiece in an experimental model in vitro. In a glass bottle, we used linear phaco power of 100% continuously for 5 min first with a new phaco tip and then with a used tip. Afterwards, the fluid in the bottle was filtered through a Millipore filter. The remains on the filter were studied by scanning electron microscopy (SEM) and microprobe. Small particles remained on the filter which was used for the new tip. Microprobe microanalysis showed that these particles were mainly titanium, the same as the phaco tip. SEM of both the new and the used tips showed small fragments on the exterior surface and lumen. Intraocular metallic foreign bodies after phacoemulsification are likely to be shaken loose from the phaco tip. Although it is mostly agreed that these fragments are well tolerated, their overall effect remains to be evaluated in the long term.