Clinical Trial Details
— Status: Not yet recruiting
Administrative data
| NCT number |
NCT03533322 |
| Other study ID # |
gallbladderstatusinchhemlytic |
| Secondary ID |
|
| Status |
Not yet recruiting |
| Phase |
|
| First received |
|
| Last updated |
|
| Start date |
October 1, 2018 |
| Est. completion date |
October 1, 2019 |
Study information
| Verified date |
May 2018 |
| Source |
Assiut University |
| Contact |
shohnda nazeir, master |
| Phone |
01064195028 |
| Email |
shahdmohammed2060[@]gmail.com |
| Is FDA regulated |
No |
| Health authority |
|
| Study type |
Observational
|
Clinical Trial Summary
Gall bladder status among children with chronic haemolytic anemia attending to Assuit
University Children Hospital.
Hemolysis is defined as the premature destruction of red blood cells (RBCs) (a shortened RBC
life span). Anemia results when the rate of destruction exceeds the capacity of the marrow to
produce RBCs. Normal RBC survival time is 110-120 days (half-life: 55-60 days), and thus,
approximately 0.85% of the most senescent RBCs are removed and replaced each day.
Patients with chronic haemolytic anemia are subjected to many complications of chronic
haemolytic anemia e.g anemic heart failure, complications of blood transfusion as hepatitis
and AIDS, hypersplenism, haemosiderosis ,among them there is incidence of gallbladder stone
formation.
This work aims to a) to determine the prevalence of gall bladder diseases among patient with
chronic haemolytic anemia.
b) to determine the risk factors of gall bladder diseases among patients with chronic
haemolytic anemia.
Description:
Gall bladder status among children with chronic haemolytic anemia attending to Assuit
University Children Hospital Hemolysis is defined as the premature destruction of red blood
cells (RBCs) (a shortened RBC life span). Anemia results when the rate of destruction exceeds
the capacity of the marrow to produce RBCs. Normal RBC survival time is 110-120 days
(half-life: 55-60 days), and thus, approximately 0.85% of the most senescent RBCs are removed
and replaced each day.(1) They may be classified according to the means of hemolysis, being
either intrinsic in cases where the cause is related to the red blood cell (RBC) itself,
defects of red blood cell membrane production (as in hereditary spherocytosis and hereditary
elliptocytosis), defects in hemoglobin production (as in thalassemia, sickle-cell disease and
congenital dyserythropoietic anemia), defective red cell metabolism (as in
glucose-6-phosphate dehydrogenase deficiency and pyruvate kinase deficiency). or extrinsic in
cases where factors external to the RBC dominate, acquired hemolytic anemia may be caused by
immune-mediated causes, drugs and other miscellaneous causes. Patients with chronic
haemolytic anemia are subjected to many complications of chronic haemolytic anemia e.g anemic
heart failure, complications of blood transfusion as hepatitis and AIDS, hypersplenism,
haemosiderosis ,among them there is incidence of gallbladder stone formation.(2) The
gallbladder is a small pouch that sits just under the liver. The gallbladder stores bile
produced by the liver. After meals, the gallbladder is empty and flat, like a deflated
balloon. Before a meal, the gallbladder may be full of bile and about the size of a small
pear. In response to signals, the gallbladder squeezes stored bile into the small intestine
through a series of tubes called ducts. Bile helps digest fat.(3) Diseases affecting gall
bladder in children as:a)Gallstones (cholelithiasis) for unclear reasons, substances in bile
can crystallize in the gallbladder, forming gallstones which is common and usually harmless,
gallstones can sometimes cause pain, nausea, or inflammation. b)Cholecystitis( Infection of
the gallbladder), often due to a gallstone in the gallbladder. Cholecystitis causes severe
pain and fever, and can require surgery when infection continues or recurs.c) Gallstone
pancreatitis: An impacted gallstone blocks the ducts that drain the pancreas. Inflammation of
the pancreas results, a serious condition.(4) While problems associated with the gallbladder
are rare in children, almost 50 percent of children have gallstones. Many of them--between 80
percent and 90 percent--have no symptoms. However, even small stones in small children can
cause problems , Gallstones are mainly categorized in three groups of cholesterol, pigment,
and mixture, among which the mixture is more common. Imbalance in bile constituents,such as
cholesterol,lecithin,andbilesalts,is the main cause of gallstone formation.(4-5) In children
>70% of gallstones are the pigment type, these stones are mostly reported in cases with
hemolytic disease, such as spherocytosis and sickle cell anemia, cirrhosis, bile tract
infection, these stones are black-brown in color, the incidence increases progressively with
age. In sickle-cell disease, the prevalence of pigment gallstones( was reported to be 10% to
15% in children under 10 years of age, it increased to 40% in those aged 10-18 years, and 50%
in adults(6-7). The prevalence of gallstones in hereditary spherocytosis was 10% to 20% and
in adult series it was 40%(7-8). In thalassemia, the reported figure is low (10% to
15%)(8-9). With longer survival of thalassemiapatients, higher prevalence of gallstones (50%)
has been reported(9). The highest prevalence of gallstones have been reported in thalassemics
with Gilbert's syndrome genotype(10). However, in a study on 64 patients with median age of
10 (range, 5 to 20) years with thalassemia major from Chandigarh, none had gallstones(11).
Risk factors
1. Multiple blood transfusions: In patients who periodically receive blood transfusions,
hemolysis of the transfused cells may supplement the chronic endogenous blood
destruction as a factor in the formation of gallstones [11-12].
2. High rates (20% by age of four years) of recurrent biliary tract obstruction in children
with the sickle cell disease reported [13].
3. Obesity: With the prevalence of childhood obesity on the rise, there is a need to be
more aware of obesity-related comorbidity including gallbladder disease. No clear link
between the diet and risk for cholelithiasis, though foods high in cholesterol and low
in fiber may increase the risk [14].
4. Inefficient and infrequent gallbladder contractions, which allow bile to sit in the
gallbladder for long periods of time, resulting in an over concentrated bile that is
conducive to stone formation [15].
1-Aim of the study:
1. to determine the prevalence of gall bladder diseases among patient with chronic
haemolytic anemia.
2. to determine the risk factors of gall bladder diseases among patients with chronic
haemolytic anemia.
2-Patients and methods: All cases included in the study will be subjected to:
- Full clinical history including (age of onset of chronic haemolytic anemia- type of
chronic haemolytic anemia -frequency of blood transfusion - use of hydroxy urea -
splenectomy or not- frequency of admission)
- Detailed clinical examination
- Abdominal ultrasound
- Plain KUB (kidney ureter bladder) x-ray if radiopaque stone.
- Compelete blood count
- Liver function test
- C- reactive protein
Type of study: cross- sectional study
Site of the study: Haematology ;general surgery units and out patient clinics ;emergency
unit at Assuit university children hospital.
Duration of the study: one year
Inclusion crieteria: children between 1 :18 years known to have chronic haemolytic
anemia.
Exclusion crieteria:
children below 1 year and above 18 years children had past history of cholecystectomy
Data analysis : Data will be processed and analyzed using SPSS software and the results
will be processed in tables and figures .
Ethical consideration:
- Reviewing the proposal will be carried out before starting via the ethical
committee of assuit faculty of medicine.
- The aim of the study will be explained to each patient before beginning of the
process,written consent will be obtained from those who welcome to participate in
the study.
- Privacy and confidentiality of all data will be assur
