Prognostic Impact of NLR, PLR, and MPV in Patients Undergoing AAA Open Repair

Abdominal Aortic Aneurysm Clinical Trial

Official title:

Preoperative Neutrophil to Lymphocyte Ratio, Platelet to Lymphocyte Ratio, and Mean Platelet Volume as Predictors of 1 Year Mortality in Patients Undergoing an Open Repair of Abdominal Aortic Aneurysms: a Retrospective Study

Clinical Trial Details — Status: Completed

Administrative data

• NCT number: NCT05031195
• Other study ID #: 3-2020-0479
• Status: Completed
• Start date: January 11, 2020
• Est. completion date: March 30, 2021

Study information

• Verified date: March 2022
• Source: Gangnam Severance Hospital
• Contact: n/a
• Is FDA regulated: No
• Study type: Observational

Clinical Trial Summary

Abdominal aortic aneurysm (AAA) is a multifactorial degenerative disorder, which if untreated might lead to catastrophic complications. The treatment for AAA includes open and endovascular repair, both of which carry a significant degree of risk. Thus, researchers have performed several studies addressing simple and readily available risk stratification markers, such as complete blood count in patients undergoing open AAA repair.

The neutrophil to lymphocyte ratio (NLR) has been frequently used as a marker of systemic inflammatory response, which reflects neutrophilia and lymphopenia. The primary pathophysiology of AAA involves chronic inflammation in the aortic wall and atherosclerosis, accompanied with thrombosis. NLR was proposed as a fair indicator for poor prognosis in patients with AAA. The mean platelet volume (MPV) is the marker of platelet activation and an indicator of the activation of thrombus formation. Moreover, it is reportedly associated with the prognosis of patients with cardiovascular diseases. Moreover, the platelet to lymphocyte ratio (PLR) suggests thrombosis and inflammation and indicates a high risk of cardiovascular events in various groups of patients. The PLR is associated with poor prognosis following AAA repair. Despite accumulating evidence for the prognostic value of white blood cell counts in abdominal aortic aneurysm, few studies have investigated the value of these parameters, including NLR, MPV, and PLR, in patients undergoing AAA open repair.

The investigators aimed to investigate if preoperative neutrophil to lymphocyte ratio (NLR), platelet to lymphocyte ratio (PLR), or mean platelet volume (MPV) could be used to predict 1-year mortality in patients undergoing open abdominal aortic aneurysm (AAA) repair.

Description:

The investigators will retrospectively review medical records who underwent open abdominal aortic aneurysm repair between Jan 2008 and July 2019. The investigators will divide the patients into two groups according to the occurrence of 1-yr mortality. Then the investigators compare complete blood count including NLR, PLR and MPV between the groups. Furthermore, the patient will be divided into tertiles according to the preoperative NLR, PLR, and MPV values to compare the incidence of 1-yr mortality and other morbidities. Multivariable logistic regression analysis will be performed to investigate possible prognostic factor for 1-yr mortality in these patients.

Recruitment information / eligibility

• Status: Completed
• Enrollment: 334
• Est. completion date: March 30, 2021
• Est. primary completion date: March 30, 2021
• Gender: All
• Age group: 19 Years to 99 Years

Eligibility

Inclusion Criteria:

• patients who underwent open repair of abdominal aortic aneurysm.

Exclusion Criteria:

• patients with previous aortic repair within 6 months.

• mycotic aneurysm.

• iliac artery aneurysm.

• aorta occlusive disease.

• incomplete data.

Related Conditions & MeSH terms

• Abdominal Aortic Aneurysm
• Aneurysm
• Aortic Aneurysm
• Aortic Aneurysm, Abdominal

Intervention

Other:
• 1st tertile, 2nd tertile, 3rd tertile
Patients will be divided into 3 groups according to the preoperative NLR value.

Locations

Country	Name	City	State
Korea, Republic of	Gangnam Severance Hospital	Seoul

Sponsors (1)

Lead Sponsor	Collaborator
Gangnam Severance Hospital

Country where clinical trial is conducted

Korea, Republic of, 

Outcome

Type	Measure	Description	Time frame	Safety issue
Primary	The incidence of postoperative 1-yr mortality	The incidence of postoperative 1-yr mortality in patients undergoing open repair of abdominal aortic aneurysm.	1-yr after operation