Routine hematologic clinical tests as prognostic markers in patients with acute coronary syndromes

Samuel J Turner1, Terry R Ketch, Sanjay K Gandhi

  • 1Department of Internal Medicine/Cardiology, Wake Forest University Health Sciences, Winston-Salem, NC 27157-1045, USA.

American Heart Journal
|April 29, 2008
PubMed

Insights

Routine blood tests can predict outcomes for acute coronary syndrome (ACS) patients. Elevated white blood cells, anemia, and high platelet counts indicate higher risks for mortality and adverse events in ACS.

Area of Science:

  • Cardiology
  • Hematology
  • Clinical Medicine

Background:

  • Identifying high-risk patients with acute coronary syndrome (ACS) is crucial for effective treatment.
  • Routine hematologic tests, part of a complete blood count, offer valuable prognostic information.
  • Existing research highlights associations between specific blood cell counts and adverse outcomes in ACS.

Purpose of the Study:

  • To review the literature on the prognostic utility of routine hematologic tests in ACS patients.
  • To explore the associations between white blood cell count, hemoglobin/hematocrit, and platelet count with clinical outcomes.
  • To discuss potential biological mechanisms underlying these hematologic associations in ACS.

Main Methods:

  • Systematic review of existing literature.
  • Analysis of studies correlating complete blood count parameters with ACS prognosis.
  • Synthesis of data on white blood cell count, hemoglobin, hematocrit, and platelet count.

Main Results:

  • Elevated white blood cell counts in ACS correlate with increased risk of mortality, heart failure, shock, and left ventricular dysfunction.
  • Anemia (low hemoglobin/hematocrit) is linked to a higher risk of mortality in ACS.
  • Elevated platelet counts are associated with poorer clinical and angiographic outcomes in ACS patients.

Conclusions:

  • Complete blood count parameters serve as accessible and valuable prognostic markers in acute coronary syndrome.
  • Hematologic indices like white blood cell count, hemoglobin, and platelet count can aid in risk stratification for ACS.
  • Further research into the mechanistic links between these hematologic markers and ACS pathophysiology is warranted.

Related Concept Videos

Acute Coronary Syndrome III: Diagnostic Studies01:30

Acute Coronary Syndrome III: Diagnostic Studies

Diagnosing acute coronary syndrome or ACS begins with a thorough patient history. Notable symptoms include central, crushing chest pain radiating to the left arm, neck, jaw, or back, along with shortness of breath, sweating (diaphoresis), nausea, vomiting, dizziness, and palpitations.It is crucial to note any history of cardiac illnesses and assess risk factors, including age, gender, smoking, hypertension, diabetes, hyperlipidemia, and a sedentary lifestyle.During physical examination, vital...
Blood Studies for Cardiovascular System I: Cardiac Biomarkers01:20

Blood Studies for Cardiovascular System I: Cardiac Biomarkers

Cardiac biomarkers are enzymes, proteins, and hormones released into the blood when cardiac cells are injured. They are powerful tools for triaging.
The essential diagnostic tools for detecting myocardial necrosis and monitoring individuals suspected of having acute coronary syndrome (ACS) include:
Troponins
Troponins, particularly cardiac troponins I and T, are the most precise and sensitive markers of myocardial injury. They are detectable within 4-6 hours of myocardial injury and remain...
Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers01:19

Blood Studies for Cardiovascular System II: CRP, Hcy, and Cardiac Natriuretic Peptide Markers

Cardiac biomarkers are critical in diagnosing, prognosing, and managing cardiovascular diseases. Routine measurement of specific biomarkers such as B-type natriuretic peptide (BNP), C-reactive protein (CRP), and homocysteine (Hcy) is common practice in clinical settings to evaluate heart function and predict cardiovascular events.
These markers indicate stress or strain on the heart muscle:
Natriuretic Peptides (BNP)
Cardiac myocytes produce these hormones in response to ventricular stretching...
Dysrhythmias V: Evaluating Dysrhythmias01:30

Dysrhythmias V: Evaluating Dysrhythmias

Dysrhythmias, also known as arrhythmias, are disturbances in the heart's rhythm that range from benign to life-threatening. A thorough evaluation is crucial for appropriate management and involves a comprehensive medical history, physical examination, and various diagnostic tests.Medical HistorySymptoms: Collect detailed information on palpitations, dizziness, syncope, chest pain, and fatigue. Note their onset, frequency, and triggers.Previous Cardiac Issues: Document any history of heart...
Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations01:19

Acute Coronary Syndrome II: Pathophysiology and Clinical Manifestations

The pathophysiology of Acute Coronary Syndrome [ACD] involves several key processes:The main underlying cause of ACD is atherosclerosis, a chronic inflammatory disease characterized by the buildup of lipid-laden plaques within the coronary arteries.As the atherosclerotic plaque grows in the coronary artery, it may become unstable due to the formation of a lipid-rich core and a thin fibrous cap. Inflammatory cells within the plaque, such as macrophages, secrete enzymes that degrade the...
Rheumatic Heart Disease II: Clinical Manifestations and Diagnostic Studies01:22

Rheumatic Heart Disease II: Clinical Manifestations and Diagnostic Studies

The key clinical manifestations of Rheumatic heart disease (RHD) include several distinct cardiac symptoms.Carditis, a hallmark of acute rheumatic fever, involves inflammation of the heart's endocardium, myocardium, and pericardium. Chronic RHD often results from recurrent episodes of carditis. Its symptoms include the following:Murmurs are caused by valvular damage, especially to the mitral and aortic valves. Mitral stenosis or regurgitation is common, with characteristic heart murmurs...