Platelets Count Alterations in Patients With Acute Coronary Syndrome

Platelets Count Alterations in Patients With Acute Coronary Syndrome: Epidemiology and Prognostic Role

Platelet count alterations (thrombocytopenia and thrombocytosis) are a common condition in patients hospitalised for acute coronary syndrome (ACS), both at disease onset and in the following recovery phase.1-3 Different factors can explain this phenomenon. Thrombocytopenia could be either due to neurohormonal activation and the inflammatory process following myocardial necrosis leading to increased macrophage activation with increased clearance of platelets, or to an immuno-modulated mechanism caused by the administration of antiaggregant/anticoagulant drugs (heparin, glycoprotein IIb/IIIa inhibitors, P2Y12 inhibitors).

Even the invasive treatment of coronaropathy during hospitalization, with angioplasty and stent implantation procedures and/or the eventual implantation of temporary mechanical blood circulation assistant devices [aortic counterpulsation, Impella, ECMO (Extracorporeal Membrane Oxygenation)], could further favour the phenomenon.4 Vice versa, thrombocytosis occurring during ACS has a reactive origin, caused by increased IL-6 production which, in turn, leads to an increase in thrombopoietin formation in the liver, causing a consequent stimulatory activity on megakaryocytes.2 Different studies have demonstrated a significant correlation between platelets count disorders and patient outcome (survival during hospitalization and in the immediate follow-up).5-11 This association has, however, often been considered an epiphenomenon of the underlying pathology. Platelets count alterations are, indeed, usually consensual to other hemogram alterations (anaemia and neutropenia), an indication of a coexisting medullar insufficiency (thrombocytopenia) or other heterogenous diseases such as cancer, iron deficiency or immuno-modulated diseases, usually associated with an increase in comorbidity indexes.12 Those alterations, moreover, can usually influence changes to the therapeutic approach (reduction/suspension of recommended standard therapies) and further condition the prognosis.13 Since a few years, the investigators have been established a cardiac-haematological collaboration aiming at finding early alterations in platelets count or, more generally, in cell blood count (CBC), collegially evaluating those alterations with a cardiologist and a haematologist (even in mild cases) and scheduling, on the basis of the aforementioned evaluations, a more precise and tailored therapeutic approach toward the specific patient needs in order to minimize the downgrading of potentially life-saving therapies.14 Until now, however, no precise evaluation of the impact that this strategy had in influencing the therapeutic approach and in improving patient outcome in our population has been performed.

A retrospective evaluation of consecutive ACS patients, their clinical, biohumoral and procedural characteristics and the adopted pharmacological treatments is, therefore, an important epidemiologic tool for the characterization of this phenomenon and for identifying potential associations which could suggest possible future therapeutic developments.

Study Overview

• Status: Completed
• Conditions: Acute Coronary Syndrome
• Intervention / Treatment: Other: Epidemiological data collection

Detailed Description

Even the invasive treatment of coronaropathy during hospitalization, with angioplasty and stent implantation procedures and/or the eventual implantation of temporary mechanical blood circulation assistant devices [aortic counterpulsation, Impella, ECMO (Extracorporeal Membrane Oxygenation)], could further favour the phenomenon. Vice versa, thrombocytosis occurring during ACS has a reactive origin, caused by increased IL-6 production which, in turn, leads to an increase in thrombopoietin formation in the liver, causing a consequent stimulatory activity on megakaryocytes. Different studies have demonstrated a significant correlation between platelets count disorders and patient outcome (survival during hospitalization and in the immediate follow-up). This association has, however, often been considered an epiphenomenon of the underlying pathology. Platelets count alterations are, indeed, usually consensual to other hemogram alterations (anaemia and neutropenia), an indication of a coexisting medullar insufficiency (thrombocytopenia) or other heterogenous diseases such as cancer, iron deficiency or immuno-modulated diseases, usually associated with an increase in comorbidity indexes. Those alterations, moreover, can usually influence changes to the therapeutic approach (reduction/suspension of recommended standard therapies) and further condition the prognosis. Since a few years,the investigators have been established a cardiac-haematological collaboration aiming at finding early alterations in platelets count or, more generally, in cell blood count (CBC), collegially evaluating those alterations with a cardiologist and a haematologist (even in mild cases) and scheduling, on the basis of the aforementioned evaluations, a more precise and tailored therapeutic approach toward the specific patient needs in order to minimize the downgrading of potentially life-saving therapies. Until now, however, no precise evaluation of the impact that this strategy had in influencing the therapeutic approach and in improving patient outcome in our population has been performed.

A retrospective evaluation of consecutive ACS patients, their clinical, biohumoral and procedural characteristics and the adopted pharmacological treatments is, therefore, an important epidemiologic tool for the characterization of this phenomenon and for identifying potential associations which could suggest possible future therapeutic developments.

• Study Type: Observational
• Enrollment (Actual): 1000

Contacts and Locations

Study Locations

• Italy
  • MI
    • Milano, MI, Italy, 20162
      • Azienda Opsedaliera Ospedale Niguarda Ca' Granda

Participation Criteria

Eligibility Criteria

• Ages Eligible for Study: 18 years and older (Adult, Older Adult)
• Accepts Healthy Volunteers: No
• Genders Eligible for Study: All

• Sampling Method: Non-Probability Sample

Study Population

Subjects with Acute Coronary Syndrome diagnosis

Description

Inclusion Criteria:

• All consecutive ACS subjects hospitalized in the Cardiology 1 - UTIC department of ASST Grande Ospedale Metropolitano Niguarda between 2014 and 2017

Exclusion Criteria:

• Age <18 years
• Subjects admitted with ACS diagnosis but not confirmed at discharge

Study Plan

How is the study designed?

Number of groups / cohorts

1

Cohorts and Interventions

Group / Cohort	Intervention / Treatment
acute coronary syndrome (ACS) patients; ACS subjects hospitalized in the Cardiology 1 - UTIC department of ASST Grande Ospedale Metropolitano Niguarda between 2014 and 2017	Other: Epidemiological data collection; To profile each subject enrolled in the study, anamnesis and different personal, clinical, procedural, pharmacological and follow up related variables will be collected. Data collection, maintenance and analysis will be performed using a database that will be developed, managed and updated by study promoter, in accordance with Good Clinical Practice (GCP)

What is the study measuring?

Primary Outcome Measures

Outcome Measure	Measure Description	Time Frame
net adverse clinical events NACE	the composite of a list of clinical events	2014 to 2017

Secondary Outcome Measures

Outcome Measure	Measure Description	Time Frame
death	patient's death for all causes at follow up	2014 to 2017
hospitalization	duration of patient's hospitalization	2014 to 2017

Collaborators and Investigators

• Sponsor: Niguarda Hospital

Publications and helpful links

General Publications

• Morici N, Tavecchia GA, Antolini L, Caporale MR, Cantoni S, Bertuccio P, Sacco A, Meani P, Viola G, Brunelli D, Oliva F, Lombardi F, Segreto A, Oreglia JA, La Vecchia C, Cattaneo M, Valgimigli M, Savonitto S. Use of PRECISE-DAPT Score and Admission Platelet Count to Predict Mortality Risk in Patients With Acute Coronary Syndrome. Angiology. 2019 Oct;70(9):867-877. doi: 10.1177/0003319719848547. Epub 2019 May 14.

Study record dates

Study Major Dates

• Study Start (Actual): June 25, 2018
• Primary Completion (Actual): February 28, 2019
• Study Completion (Actual): May 17, 2019

Study Registration Dates

• First Submitted: June 28, 2018
• First Submitted That Met QC Criteria: June 28, 2018
• First Posted (Actual): July 11, 2018

Study Record Updates

• Last Update Posted (Actual): May 21, 2019
• Last Update Submitted That Met QC Criteria: May 17, 2019
• Last Verified: May 1, 2019

More Information

Terms related to this study

• Keywords: thrombocytopenia; thrombocytosis
• Additional Relevant MeSH Terms: Pathologic Processes; Myocardial Ischemia; Heart Diseases; Cardiovascular Diseases; Vascular Diseases; Disease; Syndrome; Acute Coronary Syndrome
• Other Study ID Numbers: S_23_10_17_2001

Plan for Individual participant data (IPD)

• Plan to Share Individual Participant Data (IPD)?: UNDECIDED
• IPD Plan Description: Undecided yet

Drug and device information, study documents

• Studies a U.S. FDA-regulated drug product: No
• Studies a U.S. FDA-regulated device product: No