Plasma levels and 24-hour urine excretion of fibrinopeptide A were measured in a consecutive series of 179 patients with angina pectoris. Sixty-four patients had stable angina and 115 patients had unstable angina. Urine was collected over 24 hours the day before coronary arteriography, and blood samples were taken at the end of urine collection. When the values of fibrinopeptide A in plasma and in the 24-hour urine specimens were compared, no significant correlation was found in patients with either stable (rs = 0.16, difference not significant) and unstable (rs = 0.07, difference not significant) angina. The concentrations of fibrinopeptide A in the plasma did not differ significantly when patients with stable angina (range 0.1 to 82.6, median 7.4 ng/mL) were compared with patients with unstable angina (range 0.2 to 61.7, median 14 ng/mL, p = 0.055), whereas fibrinopeptide A 24-hour urinary excretion was significantly higher in patients with unstable angina (range 0.3 to 38.1, median 11.8 micrograms/24 hr) than in patients with stable angina (range 0.4 to 38.1, median 3.8 micrograms/24 hr, p less than 0.001). Twenty-four-hour urine excretion of fibrinopeptide A in patients with unstable angina and angiographically documented intracoronary thrombi were higher than the corresponding values in patients with unstable angina without such angiographic characteristic (p less than 0.001). The largest increase in plasma and urine concentration of fibrinopeptide A was observed in patients whose first episode of angina at rest occurred within the previous 48 hours. We conclude that the cumulative thrombin activity, assessed by 24-hour urinary excretion of fibrinopeptide A, is a more useful index, compared with single fibrinopeptide A measurement in plasma, for discriminating between patients with stable and with unstable angina pectoris.
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http://dx.doi.org/10.1016/0002-9149(91)90385-x | DOI Listing |
Cureus
December 2024
Internal Medicine, University of Health Sciences, Lahore, PAK.
Acute coronary syndrome (ACS) remains a major global health burden, encompassing a spectrum of conditions from unstable angina to acute myocardial infarction. Despite advancements in early detection and management, ACS is often complicated by the development of heart failure. This systematic review and meta-analysis aimed to identify factors associated with the development of heart failure following acute coronary syndrome.
View Article and Find Full Text PDFInt J Gen Med
January 2025
Post Graduate School of Jinzhou Medical University, Jinzhou, Liaoning, People's Republic of China.
Purpose: Acute coronary syndrome (ACS), comprising unstable angina and acute myocardial infarction, is the most dangerous and fatal form of coronary heart disease. This study evaluates serum bile acids (BAs) and amino acids (AAs) as potential predictors of AMI in UA patients.
Patients And Methods: A total of 72 Non-Coronary Artery Disease (NCAD) patients, 157 UA patients, and 79 AMI patients were analyzed.
Vasc Health Risk Manag
January 2025
Department of Cardiology, the Second Affiliated Hospital of Harbin Medical University, Harbin, Heilongjiang Province, People's Republic of China.
Objective: An association between white blood cell count (WBC-C) before percutaneous coronary intervention (PCI) and prognosis has been established in patients undergoing PCI. However, the effect of WBC-C after PCI on the long-term prognosis of patients with unstable angina pectoris (UA) is unclear.
Methods: A retrospective cohort study was conducted in 1811 consecutive patients with UA.
Heart
January 2025
Cardiovascular Epidemiology Research Centre, School of Population and Global Health, The University of Western Australia, Perth, Western Australia, Australia.
Background: Switching from a conventional to a high-sensitivity cardiac troponin (hs-cTn) assay enables detection of smaller amounts of myocardial damage, but the clinical benefit is unclear. We investigated whether switching to a hs-cTnI assay with a sex-specific 99th centile diagnostic threshold was associated with lower 1-year death or new myocardial infarction (MI) in patients with suspected acute coronary syndrome (ACS).
Methods: This pre-post study included nine tertiary hospitals in Australia.
Background: The effect of worsening renal function and baseline chronic kidney disease (CKD) on outcomes in patients with chronic coronary syndrome in the setting of optimal medical therapy remains unknown.
Methods And Results: The REAL-CAD (Randomized Evaluation of Aggressive or Moderate Lipid Lowering Therapy With Pitavastatin in Coronary Artery Disease) study is a prospective, multicenter, randomized trial of high-dose (pitavastatin 4 mg/day) or low-dose (pitavastatin 1 mg/day) statin therapy in 12 118 patients with chronic coronary syndrome. The primary end point was a composite of cardiovascular death, nonfatal myocardial infarction, stroke, or unstable angina requiring hospitalization (major adverse cardiac and cerebral events [MACCE]).
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