how to select a healthy donor & care of donor .A healthy donor is one of the most vital part of transfusion medicine for safe transfusion of blood & blood product
Notes about blood hemoglobin estimation, lecture notes to Medical Laboratory Students at Medical Laboratory Technology, Middle Technical University, Baqubah, Iraq
Hematology is the branch of medicine, that is concerned with the study of blood, blood forming organs and blood diseases. It includes study of etiology, diagnosis, treatment, prognosis and prevention of blood diseases .
After the completion of this presentation we will know about:
What is hematology and its purpose.
hematology laboratory.
Blood and its compositions and collections
Hematology lab equipment's
Some hematological tests , disease and hazards too.
how to select a healthy donor & care of donor .A healthy donor is one of the most vital part of transfusion medicine for safe transfusion of blood & blood product
Notes about blood hemoglobin estimation, lecture notes to Medical Laboratory Students at Medical Laboratory Technology, Middle Technical University, Baqubah, Iraq
Hematology is the branch of medicine, that is concerned with the study of blood, blood forming organs and blood diseases. It includes study of etiology, diagnosis, treatment, prognosis and prevention of blood diseases .
After the completion of this presentation we will know about:
What is hematology and its purpose.
hematology laboratory.
Blood and its compositions and collections
Hematology lab equipment's
Some hematological tests , disease and hazards too.
For More Medicine Free PPT - http://playnever.blogspot.com/
For Health benefits and medicine videos Subscribe youtube channel - https://www.youtube.com/playlist?list=PLKg-H-sMh9G01zEg4YpndngXODW2bq92w
An absolute eosinophil count is a blood test that measures the number of one type of white blood cells called eosinophils.
Eosinophils become active when you have certain allergic diseases, infections, and other medical conditions.
This a series of notes on hematology useful for undergraduate and postgraduate medical and paramedical students. Notes are prepared from standard texts and are easy to reproduce in exams.
Fetal hemoglobin and rh incompatibilityrohini sane
A comprehensive presentation on fetal hemoglobin & Rh incompatibility for undergraduate medical, dental, biotechnology & pharmacology students for self-learning .Presentation has physical & chemical properties of fetal hemoglobin along with its function. Binding affinity for O₂ of HbF and oxygen dissociation curve for HbF elucidated with suitable diagrams. Molecular constitution of Embryonic Hb ( Grover I &Grover II )with electrophoretic patterns are presented here . Importance of Kleihauer staining for detection of fetal cells is described briefly.
Diagrammatic representation of Rh- incompatibility is done for complete understanding of the concept. Signs & symptoms Kernicterus are presented diagrammatically.
Direct and indirect Coomb’s Test for Rh- incompatibility for diagnosis of Erythroblastosis Fetalis is illustrated. Biochemical aspects of Hemolytic Disease of Newborn (HDN) and Physiological /Neonatal Jaundice are presented. Comparison of Causes & biochemical findings for Hemolytic Jaundice along hepatic and obstructive jaundice is done in this presentation.
Molecular mechanism involved in biosynthesis of Hb Bart and Hb H along with their electrophoretic patterns for their detection are illustrated.
Hereditary persistent fetal Hb( HPFH ) & Point mutations causing HPFH are described in lucid manner. Google images are used for intense impact of the subject.
A complete blood count (CBC) is a group of tests that provide information about blood cells like Red Blood Cells (RBC), White Blood Cells (WBC) and platelets. It is routinely performed to provide an overview of a patient's general health status.
Reference: https://www.1mg.com/labs/test/complete-blood-count-1717
this is a series of notes on hematology, useful for undergraduate and post graduate pathology students. Notes have been prepared from standard textbooks and are in a format easy to reproduce in exams.
For More Medicine Free PPT - http://playnever.blogspot.com/
For Health benefits and medicine videos Subscribe youtube channel - https://www.youtube.com/playlist?list=PLKg-H-sMh9G01zEg4YpndngXODW2bq92w
An absolute eosinophil count is a blood test that measures the number of one type of white blood cells called eosinophils.
Eosinophils become active when you have certain allergic diseases, infections, and other medical conditions.
This a series of notes on hematology useful for undergraduate and postgraduate medical and paramedical students. Notes are prepared from standard texts and are easy to reproduce in exams.
Fetal hemoglobin and rh incompatibilityrohini sane
A comprehensive presentation on fetal hemoglobin & Rh incompatibility for undergraduate medical, dental, biotechnology & pharmacology students for self-learning .Presentation has physical & chemical properties of fetal hemoglobin along with its function. Binding affinity for O₂ of HbF and oxygen dissociation curve for HbF elucidated with suitable diagrams. Molecular constitution of Embryonic Hb ( Grover I &Grover II )with electrophoretic patterns are presented here . Importance of Kleihauer staining for detection of fetal cells is described briefly.
Diagrammatic representation of Rh- incompatibility is done for complete understanding of the concept. Signs & symptoms Kernicterus are presented diagrammatically.
Direct and indirect Coomb’s Test for Rh- incompatibility for diagnosis of Erythroblastosis Fetalis is illustrated. Biochemical aspects of Hemolytic Disease of Newborn (HDN) and Physiological /Neonatal Jaundice are presented. Comparison of Causes & biochemical findings for Hemolytic Jaundice along hepatic and obstructive jaundice is done in this presentation.
Molecular mechanism involved in biosynthesis of Hb Bart and Hb H along with their electrophoretic patterns for their detection are illustrated.
Hereditary persistent fetal Hb( HPFH ) & Point mutations causing HPFH are described in lucid manner. Google images are used for intense impact of the subject.
A complete blood count (CBC) is a group of tests that provide information about blood cells like Red Blood Cells (RBC), White Blood Cells (WBC) and platelets. It is routinely performed to provide an overview of a patient's general health status.
Reference: https://www.1mg.com/labs/test/complete-blood-count-1717
this is a series of notes on hematology, useful for undergraduate and post graduate pathology students. Notes have been prepared from standard textbooks and are in a format easy to reproduce in exams.
Red blood cell (RBC) indices measure the size, shape, and quality of your red blood cells. Red blood cells, also known as erythrocytes, carry oxygen from your lungs to every cell in your body. Your cells need oxygen to grow, reproduce, and stay healthy.
Evaluation of Red Cell Hemolysis in Packed Red Cells During Processing and St...Apollo Hospitals
Storage of red cells causes a progressive increase in hemolysis. Inspite of the use of additive solutions for storage and filters for leucoreduction some amount of hemolysis is still inevitable. The extent of hemolysis however should not exceed the permissible threshold for hemolysis even on the 42nd day of storage.
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One of the most developed cities of India, the city of Chennai is the capital of Tamilnadu and many people from different parts of India come here to earn their bread and butter. Being a metropolitan, the city is filled with towering building and beaches but the sad part as with almost every Indian city
Antibiotic Stewardship by Anushri Srivastava.pptxAnushriSrivastav
Stewardship is the act of taking good care of something.
Antimicrobial stewardship is a coordinated program that promotes the appropriate use of antimicrobials (including antibiotics), improves patient outcomes, reduces microbial resistance, and decreases the spread of infections caused by multidrug-resistant organisms.
WHO launched the Global Antimicrobial Resistance and Use Surveillance System (GLASS) in 2015 to fill knowledge gaps and inform strategies at all levels.
ACCORDING TO apic.org,
Antimicrobial stewardship is a coordinated program that promotes the appropriate use of antimicrobials (including antibiotics), improves patient outcomes, reduces microbial resistance, and decreases the spread of infections caused by multidrug-resistant organisms.
ACCORDING TO pewtrusts.org,
Antibiotic stewardship refers to efforts in doctors’ offices, hospitals, long term care facilities, and other health care settings to ensure that antibiotics are used only when necessary and appropriate
According to WHO,
Antimicrobial stewardship is a systematic approach to educate and support health care professionals to follow evidence-based guidelines for prescribing and administering antimicrobials
In 1996, John McGowan and Dale Gerding first applied the term antimicrobial stewardship, where they suggested a causal association between antimicrobial agent use and resistance. They also focused on the urgency of large-scale controlled trials of antimicrobial-use regulation employing sophisticated epidemiologic methods, molecular typing, and precise resistance mechanism analysis.
Antimicrobial Stewardship(AMS) refers to the optimal selection, dosing, and duration of antimicrobial treatment resulting in the best clinical outcome with minimal side effects to the patients and minimal impact on subsequent resistance.
According to the 2019 report, in the US, more than 2.8 million antibiotic-resistant infections occur each year, and more than 35000 people die. In addition to this, it also mentioned that 223,900 cases of Clostridoides difficile occurred in 2017, of which 12800 people died. The report did not include viruses or parasites
VISION
Being proactive
Supporting optimal animal and human health
Exploring ways to reduce overall use of antimicrobials
Using the drugs that prevent and treat disease by killing microscopic organisms in a responsible way
GOAL
to prevent the generation and spread of antimicrobial resistance (AMR). Doing so will preserve the effectiveness of these drugs in animals and humans for years to come.
being to preserve human and animal health and the effectiveness of antimicrobial medications.
to implement a multidisciplinary approach in assembling a stewardship team to include an infectious disease physician, a clinical pharmacist with infectious diseases training, infection preventionist, and a close collaboration with the staff in the clinical microbiology laboratory
to prevent antimicrobial overuse, misuse and abuse.
to minimize the developme
Struggling with intense fears that disrupt your life? At Renew Life Hypnosis, we offer specialized hypnosis to overcome fear. Phobias are exaggerated fears, often stemming from past traumas or learned behaviors. Hypnotherapy addresses these deep-seated fears by accessing the subconscious mind, helping you change your reactions to phobic triggers. Our expert therapists guide you into a state of deep relaxation, allowing you to transform your responses and reduce anxiety. Experience increased confidence and freedom from phobias with our personalized approach. Ready to live a fear-free life? Visit us at Renew Life Hypnosis..
Navigating Challenges: Mental Health, Legislation, and the Prison System in B...Guillermo Rivera
This conference will delve into the intricate intersections between mental health, legal frameworks, and the prison system in Bolivia. It aims to provide a comprehensive overview of the current challenges faced by mental health professionals working within the legislative and correctional landscapes. Topics of discussion will include the prevalence and impact of mental health issues among the incarcerated population, the effectiveness of existing mental health policies and legislation, and potential reforms to enhance the mental health support system within prisons.
CHAPTER 1 SEMESTER V - ROLE OF PEADIATRIC NURSE.pdfSachin Sharma
Pediatric nurses play a vital role in the health and well-being of children. Their responsibilities are wide-ranging, and their objectives can be categorized into several key areas:
1. Direct Patient Care:
Objective: Provide comprehensive and compassionate care to infants, children, and adolescents in various healthcare settings (hospitals, clinics, etc.).
This includes tasks like:
Monitoring vital signs and physical condition.
Administering medications and treatments.
Performing procedures as directed by doctors.
Assisting with daily living activities (bathing, feeding).
Providing emotional support and pain management.
2. Health Promotion and Education:
Objective: Promote healthy behaviors and educate children, families, and communities about preventive healthcare.
This includes tasks like:
Administering vaccinations.
Providing education on nutrition, hygiene, and development.
Offering breastfeeding and childbirth support.
Counseling families on safety and injury prevention.
3. Collaboration and Advocacy:
Objective: Collaborate effectively with doctors, social workers, therapists, and other healthcare professionals to ensure coordinated care for children.
Objective: Advocate for the rights and best interests of their patients, especially when children cannot speak for themselves.
This includes tasks like:
Communicating effectively with healthcare teams.
Identifying and addressing potential risks to child welfare.
Educating families about their child's condition and treatment options.
4. Professional Development and Research:
Objective: Stay up-to-date on the latest advancements in pediatric healthcare through continuing education and research.
Objective: Contribute to improving the quality of care for children by participating in research initiatives.
This includes tasks like:
Attending workshops and conferences on pediatric nursing.
Participating in clinical trials related to child health.
Implementing evidence-based practices into their daily routines.
By fulfilling these objectives, pediatric nurses play a crucial role in ensuring the optimal health and well-being of children throughout all stages of their development.
CRISPR-Cas9, a revolutionary gene-editing tool, holds immense potential to reshape medicine, agriculture, and our understanding of life. But like any powerful tool, it comes with ethical considerations.
Unveiling CRISPR: This naturally occurring bacterial defense system (crRNA & Cas9 protein) fights viruses. Scientists repurposed it for precise gene editing (correction, deletion, insertion) by targeting specific DNA sequences.
The Promise: CRISPR offers exciting possibilities:
Gene Therapy: Correcting genetic diseases like cystic fibrosis.
Agriculture: Engineering crops resistant to pests and harsh environments.
Research: Studying gene function to unlock new knowledge.
The Peril: Ethical concerns demand attention:
Off-target Effects: Unintended DNA edits can have unforeseen consequences.
Eugenics: Misusing CRISPR for designer babies raises social and ethical questions.
Equity: High costs could limit access to this potentially life-saving technology.
The Path Forward: Responsible development is crucial:
International Collaboration: Clear guidelines are needed for research and human trials.
Public Education: Open discussions ensure informed decisions about CRISPR.
Prioritize Safety and Ethics: Safety and ethical principles must be paramount.
CRISPR offers a powerful tool for a better future, but responsible development and addressing ethical concerns are essential. By prioritizing safety, fostering open dialogue, and ensuring equitable access, we can harness CRISPR's power for the benefit of all. (2998 characters)
4. Erythrocytes, Hb, and Oxygen Transport
Nearly all of the O2 carried by whole blood in animals is bound and
transported by hemoglobin (Hb) in erythrocytes (red blood cells).
Erythrocytes lack a nucleus and organelles such as mitochondria and have a
half-life in the bloodstream of 120 days.
.
5. Functions of hemoglobin
Imparts red color to the blood.
Helps to carry out the oxygen and other gases
assisting the respiratory system.
It buffers the blood pH and maintains it to the
tolerable limits.
6. Method of estimation of haemoglobin
The role of technology in hemoglobin testing has led the way for the creation
of innovative devices and techniques for the quantification of hemoglobin
concentration in patients.
Using an automated hemoglobin analyzer, for instance, has enabled fast,
accurate, and reliable results in the field of hematology.
A hemoglobin test may rely on different techniques, including reagent based
and “reagent-less” methods, or a variety of non-invasive methods
7. Measuring Techniques
Photometric
Visual comparative technique
The absorbance of hemoglobin in a blood sample is measured
electronically by a colorimeter or different analyzers.
8. Hemoglobincyanide (HiCN) Method
Using the principle of hemoglobin conversion
to cyanmethemoglobin by adding ferricyanide
and potassium cyanide, the HiCN method of
hemoglobin measurement can proceed.
Advantages of this type of hemoglobin test is
the availability of an internationally accepted
reference standard calibrator.
The HiCN method is still routinely used in
clinics especially in resource poor countries;
however, its time-consuming and cyanide-
dependent protocol gives it a higher relevance
as a reference method for POC(Point of care
analyzer) hemoglobin devices and analyzer
calibration.
9. Vanzetti's Azide Methemoglobin
Hemoglobin conversion via potassium ferricyanide to the colored, stable
azide methemoglobin form that has an almost identical absorbance
spectrum as HiCN, which represents the key characteristic of Vanzetti’s
azide methemoglobin method.2
A similar reagent used in the HiCN reference method is used, except a
sodium azide is substituted for the potassium cyanide. This hemoglobin
measurement method shows high specificity and sensitivity.3
Point-of-care (POC) hemoglobin measurement devices, such as the
HemoCue® 201 and EKF Hemo Control, operate on a modification of
Vanzetti’s method.
First, blood is pulled into a dry reagent cuvette by capillary action.
Secondly, the reagent destroys the red blood cell walls. Free hemoglobin
is then oxidized to a methemoglobin and finally converted to azide
methemoglobin. The susceptibility of the reagent to humidity represents
a challenge associated with this method.
10. Reagent-Less” Methods
ReaDue to the limitations of reagent-based cuvettes,
POC devices have been developed to feature “reagent-
less” cuvettes.
HemoCue® 301 was the first POC device to possess
such a feature. This device quantifies absorbance of
oxygenated and deoxygenated hemoglobin, while
turbidity is measured and compensated for at 880 nm.
Currently an EKF Diagnostics company, DiaSpect
represents a leader in new technology that measures
hemoglobin without a reagent based on broad spectrum
photometry. The DiaSpect technology flashes a white
LED light through a sample to an optical sensor
component.
This sensor element identifies absorbance of the blood
at a broad wavelength range that will provide insight
into the overall absorbance spectrum resulting in a
higher specificity and a lower sensitivity to
interferences. “Reagent-less” Diaspect cuvettes
feature extensive durability with total self-life of 2.5
years. Just about one second of measurement time is
another benefit of this type of device.
11. Non-Invasive Methods
With the availability of new technologies to
detect the spectral pattern and concentration
of hemoglobin, non-invasive methods have
become more frequently used, first
introduced for monitoring during surgery and
lately to provide hemoglobin spot checks in
primary care and in blood donor qualification.
Some non-invasive devices use pulse oximetry
while others rely on white light and the
capturing of transmission data to measure
hemoglobin concentrations in tissue
capillaries.
Occlusion spectroscopy is a noninvasive
measurement technology featuring a ring-
shaped sensor that is attached to the
subject’s finger.5 The sensor temporarily
ceases blood flow, initiating an optical signal
which yields a high signal-to-noise ratio. This
provides a measurement of hemoglobin
concentration.
12. Sahli´s Method
Sahli’s hemoglobinometer is a manual device that
contains a hemoglobin tube, pipette, and stirrer,
as well as a comparator. Hydrochloric acid converts
hemoglobin to acid hematin, which is then diluted
until the color of the solution matches that of the
comparator block.
The clinician can then ascertain the hemoglobin
concentration by reading from the calibration
tube. Although this is one of the most common
methods for estimating hemoglobin in developing
countries and is relatively simple and inexpensive,
the results are not always precise. For example,
there is often inter-observer variability, and it’s
also highly prone to errors due to manual
pipetting.3
13. Sahli' s Method for Estimation Of Haemoglobin:
Principle :
- This method depends on converting Hb. Into acid haematin ( has a dark brown color ).
14. - Sahli apparatus ( Haemoglobinometer ) consists of :
A- Central graduated tube that have two graduations; one indicating
the amount of Hb. In gm ∕ 100cc ,while the other indicating the percentage.
B- Two standard tubes on its sides.
- Special pipette : of 0.02 ml capacity.
- N∕10 Hcl solution& Distilled water.
- Dropper & Glass rods .
Reagents and equipments :
15. Procedure :
1- Take N∕10 Hcl up to the mark 20 % in the graduated tube with the help of dropper.
with the help of dropper.
2- Withdraw a blood by the pipette up to the mark of 0.02 ml. without air entry in
16. 5- Allow tube to stand for 10 minutes so that Hb is converted to acid
haematin.
6- Add distilled water drop by dop and mix well with a glass rod.
7- continue this process till the color of the contents of the central tube
is the same as in the standard tubes.
8- Record your results by noting the level of diluted blood
graduated tube which indicates the percentage of Hb.
And grams of Hb.∕100cc. blood.
17. Hematology Analyzer
An automated hematology or hemoglobin
analyzer is commonly used for providing high
throughputs to analyze a variety of red and white
blood cells as well as hematocrit and hemoglobin
levels from the blood sample.
These analyzers offer higher precision value at a
fraction of the time when compared with manual
methods.
The initial cost of an automated analyzer is high
and regular maintenance and the laboratory
personnel that are needed for the device can
increase costs. Additionally, stable climate
conditions are required which makes it an
unsuitable option for non-laboratory
environments like mobile blood donor test sites
and anemia screening projects out in the field.
18. Blood Gas Analyzer (BGA)
Typically used with arterial blood,
BGAs measure the combination of
blood gas, pH, electrolytes, and
metabolite parameters.
Some laboratories may use BGAs
for hemoglobin testing, but they
are more commonly seen in critical
care units, delivery wards, and
emergency rooms.
The recent development of ready-
to-use sensor and solution
cassettes with automated
calibrations has made BGAs more
user-friendly and robust, but
maintenance is still required. With
the latest innovation of hand-held
devices operating single use
cartridges BGA has become
available for use in mobile
settings, too.
19. Normal adult Hb
HbA (alpha2/beta2)
97% +
HbA2 (alpha2/delta2)
2-3%
HbF (alpha2/gamma2)
0.5% or less
NOTE ALL NEED ALPHA!
20. Haemoglobin abnormalities
Haemoglobinopathies
normal amounts of abnormal beta chains
crystalline disorders (S, C, D, E)
familial polycythaemia, M Hb, unstable Hb, HPFH
Thalassaemias
reduced amounts of normal alpha or beta chains
Can be BOTH!
21. Thalassaemias (simplistic)
Reduced production of BETA chains
BETA thalassaemias
Reduced production of ALPHA chains
ALPHA thalassaemias more severe clinical disease
22. Why get tested
Hemoglobin is measured:
To detect Anemia or Polycythaemia and to assess its severity.
To monitor the patients response to treatment.
Prior to donating blood.
To calculate red cells indices.
24. Ways of measuring include:
HiCN technique
Direct read out method (DHT)
Oxyhemoglobin technique
Automated Analyzer
Photometric Technique
Based on matching the color of a patient’s sample against a standard.
25. Ways of measuring include:
Hemoglobinometer
WHO Hemoglobin color chart
Sehli’s acid hematin method
Result Interpretation
26. Reference ranges:
Children at birth - 13.5-19.5 g/dl
Children (2-5 years) - 11.0-14.0 g/dl
Children (6-12 years) - 11.5-15.5 g/dl
Adult men - 13.0-18.0 g/dl
Adult women - 12.0-15.0 g/dl
Pregnant women - 11.0-13.8 g/dl
27. Result Interpretation
Anaemia:
Associated with low hemoglobin level, due to:
Acute blood loss,
Decreased erythropoitic activity, or Hemolysis
Classification: Microcytic Hypochromic
Normocytic Normochromic
Macrocytic Normochromic
Polycythaemia:
Associated with raised hemoglobin level, PCV and red cell count.
True Polycythaemia (Inc. in number of red cells) Primary , Secondary
28. Quality Control
Use of appropriate anticoagulant.
Sample should be checked of having clot.
Use of standards and controls.
Storage and stability.
Blood samples and controls must be allowed to sit at room temperature prior to
testing.
Sample rejection criteria:
Hemolyzed or clotted samples are unacceptable for testing.
Blood collected in sodium citrate, or in tubes containing a gel separator.
When using anticoagulated blood, not mixing the sample appropriately.