MINISTRY OF EDUCATION AND TRAINING MINISTRY OF NATIONAL DEFENCE
SCIENTIFIC RESEARCH INSTITUTE OF CLINICAL MEDICINE 108
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NGUYN VIẾT QUANG HIỂN
RES EARCH VALUE O F PRESEPSIN
IN DIAGNOSIS AND PROGNOSIS O F
SEVERE SEPSIS AND SEPTIC SHOC K PATIENTS
Specialism: Aneathesia and resuscitation
Code: 62720122
MEDICAL DOC TO RAL THESIS
Ni, 2019
Science Instructors:
1. Ass.Prof. PhD Le Thi Viet Hoa
2. Ass.Prof. PhD Nguyen Phuong Dong
Opponent 1:…………………………………………….
Opponent 2:…………………………………………….
Opponent 3:…………………………………………….
The thesis has been defended at University-level Thesis Evaluation
Council held in Scientific research Institute of clinical medicine 108
At, ...... ...... (hour), ...../...../2019 (date)
This thesis may be found at:
- National Library
- Library of Scientific research Institute of clinical medicine 108
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INTRO DUCTION
1. The urgency of thesis
Septic shock is an acute circulatory failure that reduces the
perfusion of organs, promotes systemic inflammatory response and
prolonged metabolic disorders, leading to multiple organ failure and
death. Early identification and effective management reduce
mortality in septic shock. Biomarkers have an important role in
diagnosis as well as prognosis of septic shock.
Currently there are many biomarkers that help diagnose and
prognosis patients with septic shock such as CRP, PCT, presepsin ...
Presepsin is a soluble molecule of CD14, created when the body
responds to infection. Many studies show that presepsin is valuable
in early diagnosis (up to 2 hours after infection) sepsis and septic
shock. Some meta-analyzes have demonstrated that presepsin has
better value than PCT in the diagnosis and prognosis of sepsis and
septic shock. In Vietnam, no studies to evaluated the role of plasma
presepsin in diagnosis and prognosis sepsis and septic shock.
2. The meaning of thesis
The thesis contributes new to theory and practice of using
biomarkers presepsin in the direction of diagnosis and prognosis in
patients with severe sepsisand septic shock, thereby allowing the use of
presepsin as a tool. diagnosis, monitoring and prognosis for patients
with severe sepsisand septic shock.
This is the first study in Vietnam.
3. Objectives
- Evaluate concentration changes and the role of plasma
presepsin in diagnosing severe sepsisand septic shock.
- Determine the correlation of plasma presepsin with some
scales and biomarkers assessing the severity in prognosis of
mortality on patients with severe sepsis and septic shock.
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4. Structure of thesis
The thesis has 112 pages including 2 pages of introduction and
objectives, 35 pages of overview, research subjects and methods 22
pages, results 22 pages, discussion 22 pages, conclusions and
recommendations 3 pages. The thesis has 27 tables, 10 pictures and 11
charts. The thesis uses 134 references, in which 13 Vietnamese
documents, 121 English documents, 03 articles related to the topic have
been published.
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Chapter 1 :OVERVIEW
1.1. Septic shock
In 1991, the first consensus conference between the American
College of Chest Physicians and the Society of Critical Care Medicine
agreed to provide the following definitions of sepsis, severe sepsis and
septic shock:
Infection: A bacterial infection characterized by a local
inflammatory response to microorganisms (bacteria, viruses, fungi, and
parasites) or invasion of sterile tissue by these microorganisms.
Systemic Inflammatory Reponse Syndrome (SIRS): is a global
inflammatory response for many different agents characterized by the
presence of at least 2 of the following criteria:
- Body temperature> 380C or <360C;
- Heart rate> 90 times / minute;
- Breathing frequency> 20 times / minute or PaCO2 <32 mmHg;
- The number of peripheral blood leukocytes> 12G / L or <4G / L
or leukocytes accounts for> 10%.
- Septicemia (sepsis): Systemic inflammatory response syndrome +
Positive infection or blood culture positive.
Severe sepsis: sepsis conditions that manifest organ dysfunction,
hypofusion or hypotension.
Septic shock is a serious infection with prolonged hypotension
(systolic blood pressure <90 mmHg or a decrease of more than 40
mmHg compared to the initial blood pressure of the patient) and does
not respond with fluid replacement.
In 2001, the consensus conference between the Society of Critical
Care Medicine and the European Society of Intensive Care Medicine
proposed adding diagnostic criteria to the definitions but did not provide
alternative definitions because it have not enough evidence.