Here are some potential causes of dilutional hyponatremia:
- Congestive heart failure (CHF) - excess fluid retention
- Renal failure - inability to excrete free water normally
- Syndrome of inappropriate antidiuretic hormone secretion (SIADH) - excessive ADH levels which cause water retention
- Addison's disease - lack of aldosterone leads to sodium and water loss
Sodium metabolism and its clinical applicationsrohini sane
A comprehensive presentation on Sodium Metabolism and its clinical significance for MBBS, BDS, B Pharm & Biotechnology students to facilitate self- study.
Sodium metabolism and its clinical applicationsrohini sane
A comprehensive presentation on Sodium Metabolism and its clinical significance for MBBS, BDS, B Pharm & Biotechnology students to facilitate self- study.
Topic 1. body fluid & water homeastasisAyub Abdi
it's very nice to me for preparing this presentation for medical student who interesting to understanding the value of body fluid and how it's regulated
Basic Intravenous Therapy 3: Fluids And Electrolytes, Balance and Imbalance, ...Ronald Magbitang
Lecture Presentation in Basic Intravenous Therapy Seminar, discussion on Body Fluids and Electrolytes, Normal Values and the Imbalances, the symptomatology and treatment and precautions, and, finally the different types of commonly available, utilized IVF in clinics
Topic 1. body fluid & water homeastasisAyub Abdi
it's very nice to me for preparing this presentation for medical student who interesting to understanding the value of body fluid and how it's regulated
Basic Intravenous Therapy 3: Fluids And Electrolytes, Balance and Imbalance, ...Ronald Magbitang
Lecture Presentation in Basic Intravenous Therapy Seminar, discussion on Body Fluids and Electrolytes, Normal Values and the Imbalances, the symptomatology and treatment and precautions, and, finally the different types of commonly available, utilized IVF in clinics
Iv fluid therapy (types, indications, doses calculation)kholeif
All what you need to know intravenous fluids, types, indications, contraindications, how to calculate fluid rate and drug dosages.
Embed code (http://www.slideshare.net/slideshow/embed_code/16138690)
fluid electrolyte imbalance with the causes, sign and symptoms, pathophysiology, medical management and nursing process.
helpful for the nursing students
Title: Sense of Taste
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the structure and function of taste buds.
Describe the relationship between the taste threshold and taste index of common substances.
Explain the chemical basis and signal transduction of taste perception for each type of primary taste sensation.
Recognize different abnormalities of taste perception and their causes.
Key Topics:
Significance of Taste Sensation:
Differentiation between pleasant and harmful food
Influence on behavior
Selection of food based on metabolic needs
Receptors of Taste:
Taste buds on the tongue
Influence of sense of smell, texture of food, and pain stimulation (e.g., by pepper)
Primary and Secondary Taste Sensations:
Primary taste sensations: Sweet, Sour, Salty, Bitter, Umami
Chemical basis and signal transduction mechanisms for each taste
Taste Threshold and Index:
Taste threshold values for Sweet (sucrose), Salty (NaCl), Sour (HCl), and Bitter (Quinine)
Taste index relationship: Inversely proportional to taste threshold
Taste Blindness:
Inability to taste certain substances, particularly thiourea compounds
Example: Phenylthiocarbamide
Structure and Function of Taste Buds:
Composition: Epithelial cells, Sustentacular/Supporting cells, Taste cells, Basal cells
Features: Taste pores, Taste hairs/microvilli, and Taste nerve fibers
Location of Taste Buds:
Found in papillae of the tongue (Fungiform, Circumvallate, Foliate)
Also present on the palate, tonsillar pillars, epiglottis, and proximal esophagus
Mechanism of Taste Stimulation:
Interaction of taste substances with receptors on microvilli
Signal transduction pathways for Umami, Sweet, Bitter, Sour, and Salty tastes
Taste Sensitivity and Adaptation:
Decrease in sensitivity with age
Rapid adaptation of taste sensation
Role of Saliva in Taste:
Dissolution of tastants to reach receptors
Washing away the stimulus
Taste Preferences and Aversions:
Mechanisms behind taste preference and aversion
Influence of receptors and neural pathways
Impact of Sensory Nerve Damage:
Degeneration of taste buds if the sensory nerve fiber is cut
Abnormalities of Taste Detection:
Conditions: Ageusia, Hypogeusia, Dysgeusia (parageusia)
Causes: Nerve damage, neurological disorders, infections, poor oral hygiene, adverse drug effects, deficiencies, aging, tobacco use, altered neurotransmitter levels
Neurotransmitters and Taste Threshold:
Effects of serotonin (5-HT) and norepinephrine (NE) on taste sensitivity
Supertasters:
25% of the population with heightened sensitivity to taste, especially bitterness
Increased number of fungiform papillae
micro teaching on communication m.sc nursing.pdfAnurag Sharma
Microteaching is a unique model of practice teaching. It is a viable instrument for the. desired change in the teaching behavior or the behavior potential which, in specified types of real. classroom situations, tends to facilitate the achievement of specified types of objectives.
Ethanol (CH3CH2OH), or beverage alcohol, is a two-carbon alcohol
that is rapidly distributed in the body and brain. Ethanol alters many
neurochemical systems and has rewarding and addictive properties. It
is the oldest recreational drug and likely contributes to more morbidity,
mortality, and public health costs than all illicit drugs combined. The
5th edition of the Diagnostic and Statistical Manual of Mental Disorders
(DSM-5) integrates alcohol abuse and alcohol dependence into a single
disorder called alcohol use disorder (AUD), with mild, moderate,
and severe subclassifications (American Psychiatric Association, 2013).
In the DSM-5, all types of substance abuse and dependence have been
combined into a single substance use disorder (SUD) on a continuum
from mild to severe. A diagnosis of AUD requires that at least two of
the 11 DSM-5 behaviors be present within a 12-month period (mild
AUD: 2–3 criteria; moderate AUD: 4–5 criteria; severe AUD: 6–11 criteria).
The four main behavioral effects of AUD are impaired control over
drinking, negative social consequences, risky use, and altered physiological
effects (tolerance, withdrawal). This chapter presents an overview
of the prevalence and harmful consequences of AUD in the U.S.,
the systemic nature of the disease, neurocircuitry and stages of AUD,
comorbidities, fetal alcohol spectrum disorders, genetic risk factors, and
pharmacotherapies for AUD.
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
Lung Cancer: Artificial Intelligence, Synergetics, Complex System Analysis, S...Oleg Kshivets
RESULTS: Overall life span (LS) was 2252.1±1742.5 days and cumulative 5-year survival (5YS) reached 73.2%, 10 years – 64.8%, 20 years – 42.5%. 513 LCP lived more than 5 years (LS=3124.6±1525.6 days), 148 LCP – more than 10 years (LS=5054.4±1504.1 days).199 LCP died because of LC (LS=562.7±374.5 days). 5YS of LCP after bi/lobectomies was significantly superior in comparison with LCP after pneumonectomies (78.1% vs.63.7%, P=0.00001 by log-rank test). AT significantly improved 5YS (66.3% vs. 34.8%) (P=0.00000 by log-rank test) only for LCP with N1-2. Cox modeling displayed that 5YS of LCP significantly depended on: phase transition (PT) early-invasive LC in terms of synergetics, PT N0—N12, cell ratio factors (ratio between cancer cells- CC and blood cells subpopulations), G1-3, histology, glucose, AT, blood cell circuit, prothrombin index, heparin tolerance, recalcification time (P=0.000-0.038). Neural networks, genetic algorithm selection and bootstrap simulation revealed relationships between 5YS and PT early-invasive LC (rank=1), PT N0—N12 (rank=2), thrombocytes/CC (3), erythrocytes/CC (4), eosinophils/CC (5), healthy cells/CC (6), lymphocytes/CC (7), segmented neutrophils/CC (8), stick neutrophils/CC (9), monocytes/CC (10); leucocytes/CC (11). Correct prediction of 5YS was 100% by neural networks computing (area under ROC curve=1.0; error=0.0).
CONCLUSIONS: 5YS of LCP after radical procedures significantly depended on: 1) PT early-invasive cancer; 2) PT N0--N12; 3) cell ratio factors; 4) blood cell circuit; 5) biochemical factors; 6) hemostasis system; 7) AT; 8) LC characteristics; 9) LC cell dynamics; 10) surgery type: lobectomy/pneumonectomy; 11) anthropometric data. Optimal diagnosis and treatment strategies for LC are: 1) screening and early detection of LC; 2) availability of experienced thoracic surgeons because of complexity of radical procedures; 3) aggressive en block surgery and adequate lymph node dissection for completeness; 4) precise prediction; 5) adjuvant chemoimmunoradiotherapy for LCP with unfavorable prognosis.
NVBDCP.pptx Nation vector borne disease control programSapna Thakur
NVBDCP was launched in 2003-2004 . Vector-Borne Disease: Disease that results from an infection transmitted to humans and other animals by blood-feeding arthropods, such as mosquitoes, ticks, and fleas. Examples of vector-borne diseases include Dengue fever, West Nile Virus, Lyme disease, and malaria.
MANAGEMENT OF ATRIOVENTRICULAR CONDUCTION BLOCK.pdfJim Jacob Roy
Cardiac conduction defects can occur due to various causes.
Atrioventricular conduction blocks ( AV blocks ) are classified into 3 types.
This document describes the acute management of AV block.
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Ve...kevinkariuki227
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Verified Chapters 1 - 19, Complete Newest Version.pdf
TEST BANK for Operations Management, 14th Edition by William J. Stevenson, Verified Chapters 1 - 19, Complete Newest Version.pdf
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
Title: Sense of Smell
Presenter: Dr. Faiza, Assistant Professor of Physiology
Qualifications:
MBBS (Best Graduate, AIMC Lahore)
FCPS Physiology
ICMT, CHPE, DHPE (STMU)
MPH (GC University, Faisalabad)
MBA (Virtual University of Pakistan)
Learning Objectives:
Describe the primary categories of smells and the concept of odor blindness.
Explain the structure and location of the olfactory membrane and mucosa, including the types and roles of cells involved in olfaction.
Describe the pathway and mechanisms of olfactory signal transmission from the olfactory receptors to the brain.
Illustrate the biochemical cascade triggered by odorant binding to olfactory receptors, including the role of G-proteins and second messengers in generating an action potential.
Identify different types of olfactory disorders such as anosmia, hyposmia, hyperosmia, and dysosmia, including their potential causes.
Key Topics:
Olfactory Genes:
3% of the human genome accounts for olfactory genes.
400 genes for odorant receptors.
Olfactory Membrane:
Located in the superior part of the nasal cavity.
Medially: Folds downward along the superior septum.
Laterally: Folds over the superior turbinate and upper surface of the middle turbinate.
Total surface area: 5-10 square centimeters.
Olfactory Mucosa:
Olfactory Cells: Bipolar nerve cells derived from the CNS (100 million), with 4-25 olfactory cilia per cell.
Sustentacular Cells: Produce mucus and maintain ionic and molecular environment.
Basal Cells: Replace worn-out olfactory cells with an average lifespan of 1-2 months.
Bowman’s Gland: Secretes mucus.
Stimulation of Olfactory Cells:
Odorant dissolves in mucus and attaches to receptors on olfactory cilia.
Involves a cascade effect through G-proteins and second messengers, leading to depolarization and action potential generation in the olfactory nerve.
Quality of a Good Odorant:
Small (3-20 Carbon atoms), volatile, water-soluble, and lipid-soluble.
Facilitated by odorant-binding proteins in mucus.
Membrane Potential and Action Potential:
Resting membrane potential: -55mV.
Action potential frequency in the olfactory nerve increases with odorant strength.
Adaptation Towards the Sense of Smell:
Rapid adaptation within the first second, with further slow adaptation.
Psychological adaptation greater than receptor adaptation, involving feedback inhibition from the central nervous system.
Primary Sensations of Smell:
Camphoraceous, Musky, Floral, Pepperminty, Ethereal, Pungent, Putrid.
Odor Detection Threshold:
Examples: Hydrogen sulfide (0.0005 ppm), Methyl-mercaptan (0.002 ppm).
Some toxic substances are odorless at lethal concentrations.
Characteristics of Smell:
Odor blindness for single substances due to lack of appropriate receptor protein.
Behavioral and emotional influences of smell.
Transmission of Olfactory Signals:
From olfactory cells to glomeruli in the olfactory bulb, involving lateral inhibition.
Primitive, less old, and new olfactory systems with different path
1. Stressors Affecting
Fluid & Electrolyte
Balance
NUR 101
FALL 2008
LECTURE # 15 & #16
K. Burger, MSEd, MSN, RN, CNE
2. Body Fluids
Water= most important nutrient for life.
Water= primary body fluid.
Adult weight is 55-60% water.
Loss of 10% body fluid = 8% weight loss SERIOUS
Loss of 20% body fluid = 15% weight loss FATAL
Fluid gained each day should = fluid lost each day
(2 -3L/day average)
What is the minimum output per hour necessary to
maintain renal function? 30ml/hr
3. Functions of Body Fluid
Medium for transport
Needed for cellular metabolism
Solvent for electrolytes and other
constituents
Helps maintain body temperature
Helps digestion and elimination
Acts as a lubricant
4. Mechanisms of
Fluid Gain and Loss
Gain
Fluid intake 1500ml
Food intake 1000ml
Oxidation of nutrients
300ml
(10ml of H20 per 100 Kcal)
Loss
“Sensible”
Can be seen.
Urine 1500ml
Sweat 100ml
“Insensible”
Not visible.
Skin (evaporation) 500ml
Lungs 400ml
Feces 200ml
5. Regulation of Fluids
Hypothalmus –thirst receptors (osmoreceptors)
continuosly monitor serum osmolarity (concentration). If
it rises, thirst mechanism is triggered.
+Vasopressin (AKA ADH )– increasing H20 reabsorption
Pituitary regulation- posterior pituitary releases
ADH (antidiuretic hormone) in response to increasing
serum osmolarity. Causes renal tubules to retain
H20.
Thirst is a late sign of water deficit
6. Regulation of Fluids (continued )
Renal regulation- Nephron receptors
sense decreased pressure (low
osmolarity) and kidney secretes RENIN.
Renin – Angiotensin I – Angiotensin II
Angiotensin II causes Na and H20
retention by kidneys AND…..
Stimulates Adrenal Cortex to secrete
Aldosterone which causes kidneys to
excrete K and retain Na and H20.
7. Consider This….
The Geriatric Client
-normal physiological aging results in
decreased thirst mechanism
decreased # of sweat glands
decreased renal function
-there also may be decreased mobility
and/or cognitive function which impacts
their ability to get adequate fluid intake.
8. Variations in Body Fluids
Elderly: Have lower % of total body fluid
than younger adults
Women: Have lower % total body fluid
than men
WHY DO YOU THINK THIS IS ?????
Muscle tissue has more H20 content THAN adipose tissue
9. Fluid Compartments
Intracellular
fluid (ICF)
Fluid inside the
cell
Most (2/3) of
the body’s H20
is in the ICF.
Extracellular Fluid
(ECF)
Fluid outside the cell.
1/3 of body’s H20
More prone to loss
3 types:
Interstitial- fluid
around/between cells
Intravascular- (plasma)
fluid in blood vessels
Transcellular –CSF,
Synovial fluid etc
10. Consider this….
Age variations exist in regards to
H20 content of fluid compartments
Infants =
60% of H20 is found in ECF
40% of H20 is found in ICF
What might this mean in regards to fluid
loss for an infant? Reverse of adults!
Infant MORE PRONE to fluid
LOSS!
11. Fluid Balance
Dynamic process
Balance between body fluids and
electrolytes
Attraction between ions
(electrolytes) and water (fluids)
causes fluids to move across
membranes and leave their
compartments.
12. Solvent (H20) Movement
Cell membranes are semipermeable
allowing water to pass through
Osmosis- major way fluids transported
Water shifts from low solute
concentration to high solute
concentration to reach homeostasis
(balance).
13. Osmolarity
Concentration of particles in solution
The greater the concentration (Osmolarity) of a
solution, the greater the pulling force (Osmotic
pressure)
Normal serum (blood) osmolarity = 280-295 mOSM/kg
A solution that has HIGH osmolarity is one that is >
serum osmolarity = HYPERTONIC solution
A solution that has LOW osmolarity is one that is <
serum osmolarity = HYPOTONIC solution
A solution that has equal osmolarity as serum =
ISOTONIC solution
14. Hypertonic Fluids
Hypertonic fluids have a higher
concentration of particles (high
osmolality) than ICF
This higher osmotic pressure
shifts fluid from the cells into the
ECF
Therefore Cells placed in a
hypertonic solution will shrink
15. Hypertonic Fluids
Used to temporarily treat hypovolemia
Used to expand vascular volume
Fosters normal BP and good urinary output
(often used post operatively)
Monitor for hypervolemia !
Not used for renal or cardiac disease.
THINK – Why not?
D5% 0.45% NS
D5% NS
D5% LR
Pulmonary Edema
16. Hypotonic Fluids
Hypotonic fluids have less
concentration of particles (low
osmolality) than ICF
This low osmotic pressure shifts
fluid from ECF into cells
Cells placed in a hypotonic solution
will swell
17. Hypotonic Fluids
Used to “dilute” plasma particularly in
hypernatremia
Treats cellular dehydration
Do not use for pts with increased ICP
risk or third spacing risk
0.45%NS
0.33%NS
18. Isotonic Fluid
Isotonic fluids have the same
concentration of particles (osmolality)
as ICF (275-295 mOsm/L)
Osmotic pressure is therefore the
same inside & outside the cells
Cells neither shrink nor swell in an
isotonic solution, they stay the same
19. Isotonic Fluid
Expands both intracellular and
extracellular volume
Used commonly for: excessive
vomiting,diarrhea
0.9% Normal saline
D5W
Ringer’s Lactate
20. Other Osmotic Factors
ALBUMIN ( a serum protein )
Albumin in the serum has osmotic properties called
colloid pressure
Albumin pulls H20 from the interstitial compartments
into the intravascular compartments (serum). Helps
to maintain BP.
Persons with low serum albumin levels tend to retain
fluid in their interstitial layers.
What abnormal assessments might you find in the
client with low serum albumin levels?
Edema, hypotension
21. Hmmm…….
What type of IV fluid
(hypotonic – isotonic – hypertonic)
might be of benefit to this client with low
albumin levels?
22. Consider this….
When tissue injury occurs, proteins
pathologically leak from the
intravascular space into the intersititial
space.
Termed: Third spacing
This explains __________ as a sign of
the inflammatory process.
EDEMA
23. Solute Movement -
Diffusion
Movement of solutes from high
concentration to low concentration
It is a PASSIVE movement DOWN the
concentration gradiant. (requires no energy)
Many body processes use diffusion.
Example: O2 and CO2 exchange
Rate is affected by: concentration gradiant,
permeability-surface area-thickness of
membranes, and size of particles.
(Fick’s Law)
24. Solute Movement –other
mechanisms
Active transport- requires energy (ATP)
to move from low concentration to high
concentration (uphill)
Example: Na / K pump
May be enhanced by carrier molecules with
binding sites on cell membrane
Example: Glucose
(Insulin promotes the insertion of binding
sites for Glucose on cell membranes).
25. Filtration
Solvent AND solute movement
Passage from an area of High Pressure to an area
of Low Pressure
Termed: Hydrostatic Pressure
Example:
Arterioles have higher pressure than ICF
Fluid, oxygen and nutrients move into cells
Venules have lower pressure than ICF
Fluid, carbon dioxide and wastes move out of cells
26. Fluid volume deficit FVD
(Hypovolemia)
Loss of both H20 and
electrolytes from ECF.
Causes include:
Increased output, Hemorrhage,
vomiting, diarrhea, burns,
OR
Fluid shift out of vascular space ( “third
spacing” ) into interstitial spaces
27. Dehydration
Isotonic dehydration = H20 & electrolyte
loss in equal amounts; diarrhea and
vomiting
Hypertonic dehydration = H20 loss
greater than electrolyte loss; excessive
perspiration, diabetes insipidus
28. Assessment
FVD - Hypovolemia
Cardiovascular:
Diminished peripheral pulses; quality 1+(thready)
Decreased BP & orthostatic hypotension
Increased HR
Flat neck & hand veins in dependent position
Elevated Hematocrit (Hct)
Gastrointestinal:
Thirst
Decreased motility; diminished bowel sounds,
possible constipation
30. Nursing Diagnosis - FVD
Deficient Fluid Volume
R/T loss of GI Fluids via vomiting
AEB elevated Hct, dry mucous
membranes, decreased output, thirst
31. Planning - FVD
Client will demonstrate fluid
balance aeb moist mucous
membranes, balanced I & O
measurements, Hct WNL, by ….
32. Interventions for
FVD - Hypovolemia
Prevent further fluid loss
Oral rehydration therapy
IV therapy
Medications; antiemetics, antidiarrheals
Monitor CV, Resp, Renal, GI status
Monitor electrolytes – possible supplement rx
MONITOR WEIGHT and I & O
33. NCLEX Practice
Intravenous fluids are ordered for your client
who is experiencing diarrhea and vomiting for
the past 2 days. Which IV solution would the
nurse expect to see prescribed?
a. D5NS
b. 0.45%NS
c. D51/2NS
d. RL
34. Fluid Volume Excess
FVE - Hypervolemia
Fluid overload is an excess of body
fluid - overhydration
Excess fluid volume in the
intravascular area-hypervolemia
Excess fluid volume in interstitial
spaces edema
35. Fluid Volume Excess
Causes:
Increased Na/H2O retention
Excessive intake of Na (PO or IV)
Excessive intake of H2O ( PO or IV)
(Water intoxication)
Syndrome of inappropriate antidiuretic
hormone (SIADH)
Renal failure, congestive heart failure
38. Planning - FVE
Client will demonstrate fluid balance by
balanced I & O measurements, Serum
Na WNL, etc. by ….
39. Interventions
FVE - Hypervolemia
Restore normal fluid balance, prevent
further overload
Drug therapy; diuretics
Diet therapy; decrease Na & fluids
Monitor intake and output (I & O)
Monitor weights
Monitor electrolytes
Monitor CV, Resp, Renal systems
40. Clinical Application
You have been assigned to care for an 80y.o. client
admitted with hypernatremia that has an IV
infusing 0.45% NS @ 100ml/hr via pump and an
indwelling urinary catheter. At 11am you assess
an output in the urinary drainage bag of 150ml dk
amber urine. You also notice that the client is
SOB while speaking on the phone to her daughter.
What do you think is happening??
What will you do??
42. Electrolytes
Work with fluids to keep the body healthy and in
balance
They are solutes that are found in various
concentrations and measured in terms of
milliequivalent (mEq) units
Can be negatively charged (anions) or
positively charged (cations)
For homeostasis body needs:
Total body ANIONS = Total body CATIONS
45. Sodium Na+
135-145mEq/L
Major Cation
Chief electrolyte of the ECF
Regulates volume of body fluids
Needed for nerve impulse & muscle
fiber transmission (Na/K pump)
Regulated by kidneys/ hormones
46. Hmmm…
Hyper and Hypo Natremia are the most
common electrolyte disturbances. Why do
you think that is?
It is most abundant in the
EXTRACELLULAR FLUID and therefore
more prone to fluctuation.
47. Hyponatremia
Serum Na+ <135mEq/L
Results from excess of water or loss
of Na+
Water shifts from ECF into cells
S/S: abd cramps, confusion, N/V,
H/A, pitting edema over sternum
Tx: Diet/IV therapy/fluid restrictions
48. Lets think about …
Hyponatremia
What are some medical conditions that may cause a dilutional
hyponatremia?
CHF
Renal Failure
SIADH ( Cancer, pituitary trauma )
Addisons Disease ( hypoaldosteronism & Na loss )
What are some conditions that might cause actual loss of
sodium from the body?
GI losses – nasogastric suctioning, vomiting, diarrhea
Certain diuretic therapies
Permanent neurological damage can occur when serum Na
levels fall below 110 mEq/L. Why?
Hypotonic environment swells cells, increasing ICP – brain
damage
49. Hypernatremia
Serum Na+> 145mEq/L
Results from Na+ gained in excess of H2O
OR Water is lost in excess of Na+
Water shifts from cells to ECF
S/S: thirst, dry mucous membranes & lips,
oliguria, increased temp & pulse,flushed
skin,confusion
Tx: IV therapy/diet
50. Let’s think about….
Hypernatremia
What are some medical conditions that may cause elevated
serum Na?
Renal failure
Diabetes Insipidus
Diabetes Mellitus ( hyperglycemic dehydration)
Cushings syndrome (hyperaldosteronism)
What are some other patient populations at risk for
hypernatremia?
Elderly ( decreased thirst mechanism )
Patient’s receiving:
-tube feedings
-corticosteroid drugs
-certain diuretic therapies
Seizures, coma, death my result if hypernatremia is left
untreated. Why?
51. Critical Thinking
Hypo / Hyper Natremia
For the client experiencing
FVE & hyponatremia d/t
excessive intake of water,
which IV solution would you
expect the physician to
order?
a. D5NS
b. NS
c. D5W
d. ½ NS
For the client experiencing
FVD and hypernatremia
d/t excessive water loss,
which IV solution would
you expect the physician
to order?
a. D5 ½ NS
b. D5RL
c. D5W
d. ½ NS
52. Potassium K+
3.5-5.0 mEq/L
Chief electrolyte of ICF
Major mineral in all cellular fluids
Aids in muscle contraction, nerve &
electrical impulse conduction, regulates
enzyme activity, regulates IC H20 content,
assists in acid-base balance
Regulated by kidneys/ hormones
Inversely proportional to Na
53. Hypokalemia
Serum level < 3.5mEq/L
Results from decreased intake, loss via
GI/Renal & potassium depleting diuretics
Life threatening-all body systems affected
S/S muscle weakness & leg cramps,
decreased GI motility, cardiac arrhythmias
Tx: diet/supplements/IV therapy
54. Lets think about …
Hypokalemia
What are some medical conditions that may cause a
hypokalemia?
Renal Disease / CHF (dilutional)
Metabolic Alkalosis
Cushings Disease ( Na retention leads to K loss )
What are some conditions that might cause actual loss of
potassium from the body?
GI losses – nasogastric suctioning, vomiting, diarrhea
Certain diuretic therapies
Inadequate intake – ( body cannot conserve K, need PO intake)
Cardiac arrest may occur when serum K levels fall below 2.5
mEq/L. Why?
Increased cardiac muscle irritability leads to PACs and PVCs,
then AF
56. Lets think about …
Hyperkalemia
What are some medical conditions that may cause
hyperkalemia?
Renal Disease=most common cause
Burns and other major tissue trauma
Metabolic Acidosis
Addison’s Disease ( Na loss leads to K retention )
What are some conditions that might cause potassium levels to
rise in the body?
Certain diuretic therapies
Excessive intake – ( inappropriate supplements)
Cardiac arrest may occur when serum K levels rise above
mEq/L. Why?
Decreased electrical impulse conduction leads to bradycardia
and eventual asystole.
57. Critical Thinking
Potassium IV additives
Which of the following interventions will the
nurse undertake when administering
parenteral K additives?
Monitor the IV site for phlebitis
Place on cardiac monitor if > 10 mEq
Assure of adequate mixing of K in solution
Monitor for elevated K levels
Monitor for decreased Na levels
Administer potassium by slow IV push method
NEVER!!!
58. Calcium Ca++
4.5-5.5mEq/L
Most abundant in body but:
99% in teeth and bones
Needed for nerve transmission, vitamin
B12 absorption, muscle contraction & blood
clotting
Inverse relationship with Phosphorus
Vitamin D needed for Ca absorption
61. Lets think about …
Hypocalcemia
What are some medical conditions that may cause
hypocalcemia?
Hypoparathyroidism (low PTH levels = decreased release of Ca
from bones)
S/P thryoid surgery ( low Calcitonin = decreased release of Ca
from bones) Acute pancreatitis
Crohns Disease
Hyperphosphatemia ( ESRF)
What are some other conditions that might cause low Ca?
GI losses – nasogastric suctioning, vomiting, diarrhea
Long term immobilization
Lactose intolerance
If hypocalcemia is prolonged, the body will utilize stored Ca
from bones.
What complication might arise?
62. Hypercalcemia
Serum Ca > 5.3mEq/L
Results from hyperparathyroidism,
some cancers, prolonged
immobilization
S/S muscle weakness, renal calculi,
fatigue, altered LOC, decreased GI
motility, cardiac changes
Tx: medication/ IV therapy
63. Lets think about …
Hypercalcemia
What are some medical conditions that may cause
hypercalcemia?
Hyperparathyroidism (high PTH levels = increased release of
Ca from bones)
Paget’s Disease
Some Cancers – Multiple Myleoma
Chronic Alcoholism ( with low serum phosphorus )
What are some other conditions that might cause low Ca?
Excessive intake of Ca OR Vitamin D
Excessive intake of OTC antacids
If hypercalcemia is uncorrected, AV block and cardiac arrest
may occur.
64. Magnesium Mg2+
1.5-2.5mEq/L
Most located within ICF
Needed for activating enzymes,
electrical activity, metabolism of
carbs/proteins, DNA synthesis
Regulated by intestinal absorption
and kidney
65. Hypomagnesemia
Serum < 1.5mEq/L
Results from decreased intake, prolonged NPO
status, chronic alcoholism & nasogastric
suctioning
S/S: muscle weakness, cardiac changes,
mental changes, hyperactive reflexes & other
hypocalcemia S/S.
Tx: replacement IV therapy
restore normal Ca levels ( Mg mimics Ca)
seizure precautions
66. Hypomagnesemia
Common in critically ill patients
Associated with high mortality rates
Increases cardiac irritability and ventricular
dysrhythmias - especially in patients with
recent MI
Maintenance of adequate serum Mg has
been shown to reduce mortality rates post MI
67. Hypermagnesemia
Serum>2.5mEq/L
Results from renal failure, increased
intake
S/S: flushing, lethargy, cardiac changes
(decreased HR),decreased resp, loss of
deep tendon reflexes
Tx: restrict intake
diuretic rx
68. Chloride Cl-
95-105mEq/L
Most abundant anion in ECF
Combines with Na to form salts
Maintains water balance, acid-base balance,
aids in digestion (hydrochoric acid) & osmotic
pressure (with Na and H20)
Regulated by kidneys
Follows Sodium (Na)
69. Hypochloremia
Serum level 96mEq/L
Results from prolonged vomiting &
suctioning
S/S metabolic alkalosis, nerve
excitability, muscle cramps, twitching,
hypoventilation, decreased BP if severe
Tx: diet/IV therapy
70. Hyperchloremia
Serum level > 106mEq/L
Results from excessive intake or
retention by kidneys – metabolic
acidosis
S/S Arrhythmias, decreased cardiac
output, muscle weakness, LOC
changes, Kussmauls’s respirations
Tx: restore fluid & electrolyte balance
71. Phosphate PO4-
2.5-4.5mg/dl
Needed for acid-base balance,neurological
& muscle function, energy transfer ATP &
affects metabolism of carbs/proteins/lipids,
B vitamin synthesis
Found in the bones
Regulated by intake and kidneys
Inversely proportional to Calcium
Therefore some regulation by PTH as well
72. Hypophosphatemia
Serum level < 1.8mEq/L
Results from decreased intestinal
absorption and increased excretion
S/S bone & muscle pain, mental
changes, chest pain, resp. failure
Tx: Diet/ IV therapy
73. Hyperphosphatemia
Serum level> 2.6mEq/L
Results from renal failure, low intake of
calcium
S/S: neuromuscular changes (tetany), EKG
changes, parathesia-fingertips/mouth
Tx: Diet; hypocalcemic interventions
Medications: phosphate binding
The body can tolerate hyperphosphatemia
fairly well BUT the accompanying
hypocalcemia is a larger problem!
74. Critical Thinking - NCLEX
The nurse is caring for a client with renal
failure whose magnesium level is 3.6
mg/dL. Which of the following signs would
the nurse most likely expect to note in the
client based on this Mg level?
a. Twitching
b. Hyperactive reflexes
c. Irritability
d. Loss of deep tendon reflexes
75. Electrolyte homeostasis
This means to maintain balance…
to control by balancing the dietary
intake of electrolytes with the renal
excretion and reabsorption of
electrolytes
76. Interventions for F/E balance
Assess patient carefully- note changes
Monitor I & O (Intake & Output)
Monitor weight changes
Monitor urine
Monitor vs
Monitor lab results and dx test
Maintain proper IV therapy
77. Summary
Fluid compartments in the body must
balance
Body systems regulate F&E balance
Assessment of body fluid is important
to determine causes of imbalance
Interventions for imbalances are based
on the cause
Editor's Notes
What controls or regulates the fluids in our body?
Thirst –simplest way to maintain fluid balance
Thirst center failure- onconscious or confused pt. To not respond
Which age group is most prone to dehydration because their body’s weight is mostly water?
What also is increased here?
Increased risk for fluid/electrolyte imbalance with decreased muscle since muscle cells hold more water
NOTE: Potter & Perry speaks to the “percentage of body weight” 40% of BODY WEIGHT = ICF fluid 20% of BODY WEIGHT = ECF fluid
Transcellular fluid is a negligible amount
This is reverse of adults THEREFORE the infant is more susceptible to fluid loss
SEE NEXT SLIDES FOR IN-DEPTH
Water is a solvent
Concentration of particles in solution (pulling action = osmolarity)
Isotonic have almost same osmolarity as plasma therefore there is no pull
Osmosis, by the way, is the reason that drinking salt water will kill you.
The HIGH osmolarity salt water in the GI system rapidly pulls water into the GI system and excretion – rapidly dehydrating cells
SEE NEXT SLIDES FOR FURTHER DISCUSSION
Used for post op, decreases intracellular edema, fosters normal BP and good urinary output.
D51/2NS, D5NS, D5RL
Hyperal
ECF- extracellular fluids
ICF intracellular fluid - fluid inside the cell
D5W isotonic /Normal saline solution is isotonic because it has almost the same concentration of sodium as blood.
Used to replace Ecvlume
Hypertonic
EDEMA
Filtration- from pressure to low pressure
Dehydration: Fluid intake is not sufficient to meet the body’s needs.
Dehydration- if water isn’t adequately replaced dehydration results
Dx Tests
Elevated HCT
Elevated NA
Sp. Gravity above 1.030
Monitor lab work
Cause- unless unconscious
Sudden wt. change is a major indicator of fluid loss
Oral- keep fluids at bedside, offer frequently
IV fluids, blood & other parenteral measures Hyperal etc.
Meds- depending on the cause
Diarrhea give anti diarrhea meds
Vomiting give anti emetics
Vasopressors if pt. In shock cause vasoconstriction and increase BP
Ringers Lactate = ISOTONIC for replacement of ISOTONIC DEHYDRATION (loss of fluid & Electrolyte)
Increase in vascular blood
Third spacing could be in the abd- ascites
pleural effusion in the lungs
Retention-
Intake- Poorly controlled IV therapy/ rapid hypertonic solution/ excessive sodium bicarb / excessive Na intake
Drug therapy- - diuretics for overhydration increases excretion of water and sodium
Diet-- restricting fluid and sodium intake
Monitor lab work
1 mEq MILLIEQUIVALENT = 1 MG OF HYDROGEN
Each will be discussed except Bicarbonate as that plays a role in acid base balance which will be covered in NR33
Na concentrations effected by water intake and salt untake
Hormones -Aldsterone
Causes
Poor IV therapy- IV therapy increased water in blood Na is diluted
CHF
Renal Failure
GI: vomiting diarrhea drainage
Skin: sweating burns
diuretic drugs
TX
Diet- foods high in sodium
- IV solutions ordered if hypovolemia (low volume)
Fluid excess- osmotic diuretics ordered to promote excretion of water rather than sodium (mannitol)
Fluid restriction till Na returns to norm
Lop diueretics to to remove excess fluid
Assess: VS skin integrity, seizures, I & O/ monitor lytes
Causes- increased Na intake- rapid infusion of saline solution/po intake
loss of water – diarrhea/DM/decreased water intake/ impaired thirst center/can’t swallow
Fluid shift from ICF to ECF ….(Na pulls h2o out of cells, kidneys excrete Na and water follows)
Tx-if caused by fluid loss Need slow gradual return to normal Na+ by IV hypotonic solution 0.45%NS
Pt. Teaching avoid high Na foods, canned soups, processed foods, ketchup AVOID antacids high in sodium bicarb
I&O, review diet, meds,
Moniotr weight, note change LOC
Effects skeletal/cardiac/smooth muscle
Causes:
Inadequate intake
Alcoholism/
Diuretics
Excessive Vomiting & diarrhea
Tx
ID cause
High K diet, …oranges, broccoli, meat protein foods,banana, apricots
PO supplements common
IV therapy always diluted…
…(false rise due to tight tourniquet or hemolized specimen) occurs
Poor elimination by kidneys
Parathesia -tingling
Tx-Depends on cause
Hold Kmeds, low K diet orderd
Kayexalate administered to increase excretion of K
IV therapy add volume to dilute K+
Monitor for fluid overload.
8.5-10.5mg/deciliter dL
Vit D needed for Ca absorption
Common after thyroid surgery
Chovstek sign-Tap facial nerve in front of ear= facial spasm
Trousseau- carpal spasm after BP cuff inflated due to increased neuromuscular excitability
TX -Ca supplements…dietary. Dairy green veg, sardines salmon
If severe-IV calcium gluconate
Remember it’s in the blood not the bones
Causes-high intake
TX-Depends on cause encourage mobility,immobilization causes demineralization of bones leading to fractures remove parathyroid tumors
encourage fluids to prevent renal calculi
Lower Ca by IV therapy causes diuresis encouraging kidney excretion
Calcium binding meds given to promote excretion of calcium.
Flushing due to peripheral vasodilation
Resp. deep shallow and slow
Tx:
correct cause, diet increase Cl, vomiting reduce it, replacement thru IV therapy… can br given orally ie. Salty broth
Tx- treat underlying cause, VS, reorient if confused
Kussmals –rapid and deep without pauses above 20/min
Tx- vs,
assess resp, neuro status
IV meds safety
Tx: Correct the under lying cause..renal failure, diet, decreased absorption, Iv fluids, vs
Diet limit foods