Related Experiment Video
Updated: Nov 8, 2025

A Uniform Shear Assay for Human Platelet and Cell Surface Receptors via Cone-plate Viscometry
Published on: June 5, 2019
Are average platelet volume, red cell distribution width and platelet distribution width guiding markers for acute
Erkan Dalbaşı1, Ömer Lütfi Akgül2
1Memorial Diyarbakır Hospital General Surgery Department, Diyarbakır, Turkey.
Background:
Acute appendicitis (AA) is the most common cause of surgery performed for the acute abdomen. The standard treatment for AA patients has been appendectomy for more than a century. The use of broad-spectrum antibiotics, the medical treatment option has come to the fore in the treatment of uncomplicated AA.
Aim:
Evaluate whether white blood cell (WBC), platelet count, mean platelet volume (MPV), platelet distribution width (PDW), red cell distribution width (RDW) and C-reactive protein (CRP) values of patients diagnosed with uncomplicated AA clinically, with laboratory tests and radiologically with abdominal computed tomography (CT) could be a marker for choosing medical or surgical treatment.
Materials And Methods:
519 patients aged between 20 and 65 years who were diagnosed with uncomplicated AA by abdominal CT in our centre between January 2016 and January 2019 were retrospectively analysed. The presence of at least one of the criteria of 7 mm or more appendix diameter and oedema or fluid accumulation around the appendix was accepted as uncomplicated AA. After the diagnosis of AA, 223 patients were treated medically, while 296 patients underwent laparoscopic appendectomy. The first group included patients who were treated medically and the second group included patients who underwent laparoscopic appendectomy.
Results:
Group 2 patients had higher mean platelet count (P < .005) and RDW (P = .003) values compared to Group 1 patients, while mean PDW (P < .001) values were lower compared to those of Group 1 patients. The differences between the mean WBC, CRP and MPV values of the groups were not statistically significant (P > .05).
Conclusions:
Recently, studies supporting antibiotic therapy have been conducted in patients diagnosed with AA. As a result, we think that PDW, RDW, and platelet values in patients diagnosed with uncomplicated AA may be a guide in choosing patients to be treated with surgery or antibiotics.
Related Concept Videos
Appendicitis-II: Diagnostic Studies and Management
Diagnosing Appendicitis
It requires a multifaceted approach, starting with a detailed physical examination to pinpoint the location and nature of the pain and identify any associated symptoms. Laboratory tests play a crucial role. A complete Blood Count (CBC) typically reveals leukocytosis (an increased number of...
Formation of the Platelet Plug
As the injured blood vessel contracts, endothelial cells undergo contraction, revealing collagen fibers in the basement membrane and underlying connective tissue. Furthermore, the plasma membrane of endothelial cells becomes adhesive, preparing the site for platelet adhesion. Platelets...
Peripheral Arterial Disease II: Clinical Manifestations and Diagnostic Evaluation
Structure and Function of Platelets
Platelets are continually replenished, circulating in the bloodstream for 9-12 days before being removed by phagocytes, primarily in the spleen. A microliter of circulating blood contains between 150,000 and 450,000...

