This patient is most likely suffering from primary hyperparathyroidism. Two reasons support this diagnosis: 1) fluctuating calcium levels are typical of primary hyperparathyroidism and 2) a higher calcium level should be accompanied by a low PTH, but this patient has a high PTH with higher calcium levels. The commonest cause of primary hyperparathyroidism is a single adenoma of the parathyroid gland, present in around 85% of cases.
Calcium (Ca2+) is both a mineral and an electrolyte which plays important roles in a number of body activities. It is vital in the formation and maintenance of healthy bones of proper density. Calcium is also essential in the process of cell signaling (communication between cells to coordinate cellular activities in a tissue and interaction with other tissues), blood clotting, and in the proper functioning of muscles, heart, and nerves. The Calcium Test (Total) measures the total amount of calcium in the blood.
Reference: https://www.1mg.com/labs/test/calcium-1318
Estimation of Blood Urea Nitrogen by Dr. TehmasTehmas Ahmad
Lecture/Demonstration of Biochemistry Practical of Blood Urea Nitrogen estimation in serum Delivered on 11-04-2018 to 2nd year MBBS students of Bannu Medical College, Bannu.
Calcium (Ca2+) is both a mineral and an electrolyte which plays important roles in a number of body activities. It is vital in the formation and maintenance of healthy bones of proper density. Calcium is also essential in the process of cell signaling (communication between cells to coordinate cellular activities in a tissue and interaction with other tissues), blood clotting, and in the proper functioning of muscles, heart, and nerves. The Calcium Test (Total) measures the total amount of calcium in the blood.
Reference: https://www.1mg.com/labs/test/calcium-1318
Estimation of Blood Urea Nitrogen by Dr. TehmasTehmas Ahmad
Lecture/Demonstration of Biochemistry Practical of Blood Urea Nitrogen estimation in serum Delivered on 11-04-2018 to 2nd year MBBS students of Bannu Medical College, Bannu.
This slide briefly imparts the knowledge of Amylase and Lipase enzymes. The clinical importance, calculation, concentration, sources and principle of amylase estimation are the major components of uploaded slide.
An inherited blood disorder where red blood cells (RBCs) become sickle/crescent shaped. It causes frequent infections, swelling in the hands and legs, pain, severe tiredness, and delayed growth or puberty.
This slide briefly imparts the knowledge of Amylase and Lipase enzymes. The clinical importance, calculation, concentration, sources and principle of amylase estimation are the major components of uploaded slide.
An inherited blood disorder where red blood cells (RBCs) become sickle/crescent shaped. It causes frequent infections, swelling in the hands and legs, pain, severe tiredness, and delayed growth or puberty.
Potassium is the principal cation of the intracellular fl uid
(ICF) where its concentration is between 120 and 150 mEq/L.
The extracellular fl uid (ECF) and plasma potassium concentration [K] is much lower––in the 3.5–5.0 mEq/L range.
The very large transcellular gradient is maintained by active
K transport via the Na-K-ATPase pumps present in all cell
membranes and the ionic permeability characteristics of
these membranes. The resulting greater than 40-fold transmembrane [K] gradient is the principal determinant of the
transcellular resting potential gradient, about 90 mV with
the cell interior negative . Normal cell function
requires maintenance of the ECF [K] within a relatively narrow
range. This is particularly important for excitable cells
such as myocytes and neurons. The pathophysiologic effects
of dyskalemia on these cells result in most of the clinical
manifestations.
This lecture is based on National guidelines(Sri Lanka) and guidelines by NHS UK. all the materials used to prepare the lecture are trusted and high in quality. also the books referred are internationally recognized. both hyper and hypokalemia management included in the lecture. lecture is free and you can even download. i kept no copy rights. i appreciate your support, comments and suggestions. also i would be grateful if you can make these lectures popular. wishing your success.
A simple presentation on hypokalemia. The most common electrolyte disorder in the Critical Care practice.The presentation is based on a mortality and morbidity case report and discussion. It covers all the basic aspects of understanding the causes of hypokalemia in ICU and its management. Target audience are residents ICU and ER but all health care workers can benefit.
New Directions in Targeted Therapeutic Approaches for Older Adults With Mantl...i3 Health
i3 Health is pleased to make the speaker slides from this activity available for use as a non-accredited self-study or teaching resource.
This slide deck presented by Dr. Kami Maddocks, Professor-Clinical in the Division of Hematology and
Associate Division Director for Ambulatory Operations
The Ohio State University Comprehensive Cancer Center, will provide insight into new directions in targeted therapeutic approaches for older adults with mantle cell lymphoma.
STATEMENT OF NEED
Mantle cell lymphoma (MCL) is a rare, aggressive B-cell non-Hodgkin lymphoma (NHL) accounting for 5% to 7% of all lymphomas. Its prognosis ranges from indolent disease that does not require treatment for years to very aggressive disease, which is associated with poor survival (Silkenstedt et al, 2021). Typically, MCL is diagnosed at advanced stage and in older patients who cannot tolerate intensive therapy (NCCN, 2022). Although recent advances have slightly increased remission rates, recurrence and relapse remain very common, leading to a median overall survival between 3 and 6 years (LLS, 2021). Though there are several effective options, progress is still needed towards establishing an accepted frontline approach for MCL (Castellino et al, 2022). Treatment selection and management of MCL are complicated by the heterogeneity of prognosis, advanced age and comorbidities of patients, and lack of an established standard approach for treatment, making it vital that clinicians be familiar with the latest research and advances in this area. In this activity chaired by Michael Wang, MD, Professor in the Department of Lymphoma & Myeloma at MD Anderson Cancer Center, expert faculty will discuss prognostic factors informing treatment, the promising results of recent trials in new therapeutic approaches, and the implications of treatment resistance in therapeutic selection for MCL.
Target Audience
Hematology/oncology fellows, attending faculty, and other health care professionals involved in the treatment of patients with mantle cell lymphoma (MCL).
Learning Objectives
1.) Identify clinical and biological prognostic factors that can guide treatment decision making for older adults with MCL
2.) Evaluate emerging data on targeted therapeutic approaches for treatment-naive and relapsed/refractory MCL and their applicability to older adults
3.) Assess mechanisms of resistance to targeted therapies for MCL and their implications for treatment selection
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The prostate is an exocrine gland of the male mammalian reproductive system
It is a walnut-sized gland that forms part of the male reproductive system and is located in front of the rectum and just below the urinary bladder
Function is to store and secrete a clear, slightly alkaline fluid that constitutes 10-30% of the volume of the seminal fluid that along with the spermatozoa, constitutes semen
A healthy human prostate measures (4cm-vertical, by 3cm-horizontal, 2cm ant-post ).
It surrounds the urethra just below the urinary bladder. It has anterior, median, posterior and two lateral lobes
It’s work is regulated by androgens which are responsible for male sex characteristics
Generalised disease of the prostate due to hormonal derangement which leads to non malignant enlargement of the gland (increase in the number of epithelial cells and stromal tissue)to cause compression of the urethra leading to symptoms (LUTS
Pulmonary Thromboembolism - etilogy, types, medical- Surgical and nursing man...VarunMahajani
Disruption of blood supply to lung alveoli due to blockage of one or more pulmonary blood vessels is called as Pulmonary thromboembolism. In this presentation we will discuss its causes, types and its management in depth.
New Drug Discovery and Development .....NEHA GUPTA
The "New Drug Discovery and Development" process involves the identification, design, testing, and manufacturing of novel pharmaceutical compounds with the aim of introducing new and improved treatments for various medical conditions. This comprehensive endeavor encompasses various stages, including target identification, preclinical studies, clinical trials, regulatory approval, and post-market surveillance. It involves multidisciplinary collaboration among scientists, researchers, clinicians, regulatory experts, and pharmaceutical companies to bring innovative therapies to market and address unmet medical needs.
ARTIFICIAL INTELLIGENCE IN HEALTHCARE.pdfAnujkumaranit
Artificial intelligence (AI) refers to the simulation of human intelligence processes by machines, especially computer systems. It encompasses tasks such as learning, reasoning, problem-solving, perception, and language understanding. AI technologies are revolutionizing various fields, from healthcare to finance, by enabling machines to perform tasks that typically require human intelligence.
Recomendações da OMS sobre cuidados maternos e neonatais para uma experiência pós-natal positiva.
Em consonância com os ODS – Objetivos do Desenvolvimento Sustentável e a Estratégia Global para a Saúde das Mulheres, Crianças e Adolescentes, e aplicando uma abordagem baseada nos direitos humanos, os esforços de cuidados pós-natais devem expandir-se para além da cobertura e da simples sobrevivência, de modo a incluir cuidados de qualidade.
Estas diretrizes visam melhorar a qualidade dos cuidados pós-natais essenciais e de rotina prestados às mulheres e aos recém-nascidos, com o objetivo final de melhorar a saúde e o bem-estar materno e neonatal.
Uma “experiência pós-natal positiva” é um resultado importante para todas as mulheres que dão à luz e para os seus recém-nascidos, estabelecendo as bases para a melhoria da saúde e do bem-estar a curto e longo prazo. Uma experiência pós-natal positiva é definida como aquela em que as mulheres, pessoas que gestam, os recém-nascidos, os casais, os pais, os cuidadores e as famílias recebem informação consistente, garantia e apoio de profissionais de saúde motivados; e onde um sistema de saúde flexível e com recursos reconheça as necessidades das mulheres e dos bebês e respeite o seu contexto cultural.
Estas diretrizes consolidadas apresentam algumas recomendações novas e já bem fundamentadas sobre cuidados pós-natais de rotina para mulheres e neonatos que recebem cuidados no pós-parto em unidades de saúde ou na comunidade, independentemente dos recursos disponíveis.
É fornecido um conjunto abrangente de recomendações para cuidados durante o período puerperal, com ênfase nos cuidados essenciais que todas as mulheres e recém-nascidos devem receber, e com a devida atenção à qualidade dos cuidados; isto é, a entrega e a experiência do cuidado recebido. Estas diretrizes atualizam e ampliam as recomendações da OMS de 2014 sobre cuidados pós-natais da mãe e do recém-nascido e complementam as atuais diretrizes da OMS sobre a gestão de complicações pós-natais.
O estabelecimento da amamentação e o manejo das principais intercorrências é contemplada.
Recomendamos muito.
Vamos discutir essas recomendações no nosso curso de pós-graduação em Aleitamento no Instituto Ciclos.
Esta publicação só está disponível em inglês até o momento.
Prof. Marcus Renato de Carvalho
www.agostodourado.com
These simplified slides by Dr. Sidra Arshad present an overview of the non-respiratory functions of the respiratory tract.
Learning objectives:
1. Enlist the non-respiratory functions of the respiratory tract
2. Briefly explain how these functions are carried out
3. Discuss the significance of dead space
4. Differentiate between minute ventilation and alveolar ventilation
5. Describe the cough and sneeze reflexes
Study Resources:
1. Chapter 39, Guyton and Hall Textbook of Medical Physiology, 14th edition
2. Chapter 34, Ganong’s Review of Medical Physiology, 26th edition
3. Chapter 17, Human Physiology by Lauralee Sherwood, 9th edition
4. Non-respiratory functions of the lungs https://academic.oup.com/bjaed/article/13/3/98/278874
2. Serum calcium
CALCIUM is 5th most common element in the body &
most prevalent cation
Average human body (70kg ) contain about 1KG or 25
mol, of calcium
the skeleton contain 99% of body calcium ( extracellular
crystals ) while 1 % is present in soft tissues ,& extra
cellular fluid .
2
3. Biochemistry & physiology
In blood all calcium is found in plasma with mean
concentration of 9.5mg/dl
Exits in three physiochemical states in plasma
50 % is free ( ionized ),
40 % is bound to plasma protein &
10 % is complexed with small diffusible inorganic including
bicarbonate ,phosphate, lactate ,& citrate
3
5. The free calcium is biologically active ,
Its concentration in plasma is regulated by
Decrease
Calcium
PTH Calcium Sensing
receptors
Transmembrane
receptor on Parathyroid
Gland
1,25(OH)2 D 1-Calcium reabsorption
from kidney
2-Calcium absorption (GUT)
3-Skeleton ( bone
resorption releasing calcium
5
6. Clinical significance
Hypocalcemia (< 8.8 mg/dl )
Low total plasma calcium or free ionized calcium or both
Hypoalbuminemia is the most apparent of hypocalcemia
in hospitalized patient (Rule of thumb: 0.8 mg/dl Ca
change for each 1 gm/dl change in albumin )
6
8. Hyper calcemia
Two commonest cause of hypercalcemia
Malignancy ; in hospitalized patient
primary hyperparathyroidism : in out patient
Hypercalcemia of malignancy : three types
Humoral Hypercalcemia of Malignancy .
Tumor secretion of parathyroid related protein
Localized osteolytic Hypercalcemia.
Metastases with local release of cytokines
Increased activated vitamin D .
tumor produce 1-alpha hydroxylase which in turn increase
activated vit: D
8
12. Calcium measurement
Measurement of Total Calcium :
At present two methods are in use
1- Photometric 2- Ion Selective Electrode
ISE method has been introduced recently than photometric
The specimen is acidified to convert protein bound & complexed
calcium to free calcium before calcium is measured by ISE
12
13. o-Cresolpthalein Complexone methods
In alkaline solution ,the Metal complex dye CPC
forms a red chromophore complex with Calcium
The color is usually measured at a wave length
between 570-580nm
The sample is diluted with acid to release complex &
protein bound calcium
13
14. o-Cresolpthalein Complexone methods
Interference by Magnesium is reduced by adding
8-hydroxyquinolone
Calcium forms both 1;1 & 2;1 complexes with CPC
with former predominately with lower concentration
Reaction is temperature sensitive .
14
16. Total Calcium adjusted for Albumin
Corrected total albumin ; (mg/dl )
Total calcium + 0.8 (4 – Albumin (g/dl) ) .
Adjusted total mmol/dl
Total calcium(mmol) + 0.02 (40-Albumin g/L
16
17. Free Calcium
• Ionized Ca has been shown to be a more sensitive test for the
diagnosis of various calcium disorders4 .
• The results are instant as test is done on ISE based systems e.g.
electrolyte or ABG analyzers.
• Composite ABG analyzers should be preferred to give
simultaneous estimation of Ca++ and pH.
• Reference method for Total Ca is Atomic Absorption photometry
but for Ca++ an ISE based method been developed and approved
by IFCC2 .
17
18. Free Calcium
• Precautions for Ca++ are same as for ABG analysis
• It must be emphasized that factors like tourniquet and
patient posture only minimally effect free calcium
estimation.
• Lyophilized Lithium Heparin Syringes or tubes should be
used in anaerobic conditions and estimation should be
done within 30 min (maximum 1 h).
• If delayed should be stored at 40 C but then K+ estimation
is effected.
• Lyophilized Lithium Heparin Syringes are available in
Pakistan and may be used for ABGs and electrolytes
18
19. Effect of pH
There is inverse relation between free calcium & pH
Free calcium changes by about 5% for each 0.1 unit in
change pH
Albumin has 30 binding site for calcium binding & account
for 80% of the protein bound calcium .
Increase in pH increase negative charge on albumin &
other proteins leading to increase in protein bound calcium
& decrease free calcium
19
21. Preanalytical factors
These factors affect serum total or free Calcium
21
Torniquet & venous occlusion
(0.5 to 1mg )
Specimen handling
Change in posture
10 -20% increase in total calcium ,
5 to 6 % in free calcium binding
Alteration in pH (free calcium)
Inappropriate anticoagulant
Exercise , Spectrometric interference
Fist clenching,(dec pH )
Hyperventilation
Hemolysis ,Icterus Lipemia
22. Urinary Calcium
The rate Urinary calcium excretion reflects Calcium intake
,Intestinal absorption ,skeletal resorption & renal tubular
filtration & absorption
Healthy men & women excrete up to 300mg of calcium
per day on unrestricted diet & up to 200mg p/Day on
calcium restricted diet
UCa(mg/dl) × serum creatinine
urinary creatine mg/dl
22
24. Q :
A 46 years male has headaches, fatigue, anorexia, nausea, paraesthesia's, muscular
weakness and pain in the extremities. His biochemical profile revealed:
Serum Calcium: 2.72 mmol/L (2.10-2.65)
Serum Urea: 6.9 mmol/L (3.6-6.6)
Blood PTH: 86 pmol/L (15-62)
The treating physician wanted to be pretty sure before reaching a diagnosis and
advised a repeat profile after one week which showed:
Serum Calcium: 2.56 mmol/L (2.10-2.65)
Serum Urea: 4.2 mmol/L (3.6-6.6)
Blood PTH: 80 pmol/L (15-62)
24
25. Q :
Quite puzzled with these lab results, he refers the patient for your
expert opinion.
a. What is the most probable diagnosis?
b. Give TWO reasons to support your opinion.
c. What is commonest pathological cause of this
disorder?
25
26. Ans :
a. Primary Hyperparathyroidism
b. (1) Fluctuating Calcium levels are typical of Primary Hyperthyroidism.
Hypercalcaemia does not follow any ascending pattern with increasing
severity of the disease .
(2) A higher calcium level should be accompanied by a low PTH. A high
PTH with higher or upper normal Calcium levels and normal renal
function points towards Primary Hyperthyroidism.
c. Adenoma of Parathyroid gland (85%)
26
27. Hyperparathyroidism (Summary)
• Primary hyperparathyroidism: most cases (85%) of hyperparathyroidism are
the result of a single parathyroid gland malfunctioning and developing into
an adenoma. In 15% of cases, multiple adenomas or hyperplasia are
involved.
• Secondary hyperparathyroidism: vitamin D deficiency and chronic kidney
disease are the most common causes. Not a parathyroid disease.
• Tertiary hyperparathyroidism: autonomous production of parathyroid
hormone, usually the result of longstanding secondary
hyperparathyroidism
27