ETIOLOGY
Inmost of thecases,noncancerous pituitary glandtumor is
caused duetogigantism.
McCune-Albright syndromeis adisorder that causes
unusual growth of bone tissues, gland irregularities and
patches of light andbrownskin.
Acromegaly is achronicmetabolic disorder in whichthereis a
secretionoftoomuchgrowthhormone&thebodytissues
graduallyenlarge.
ETIOLOGY:
Pituitary tumors Benign tumor,adenoma of pituitary gland
Non Pituitary tumors Benign or cancerous tumor of the
other part of body such as lungs,pancreas,adrenal
glands.
Excessgrowthhormone&growthhormonereleasingfactorsinthe
bloodlevels results in changes in theappearance &functions ofthe
body.
SYMPTOMS
Handswelling,sausage likefingers
Increaseinshoesize
Diaphoresis
Thickening of thefacial features
Increaseprominence in jaw&forehead
Thickened skin
Swelling of tongue
Arthritis
Sleepapnoea
Headache
Partial loss of vision
Pain,numbness,tingling weaknessin hands&wrists
Increased thirst nurination,hyperglycemi,heart failure etc
DIAGNOSTIC EVALUATION
Historycollection
Physical examination
CTscan,MRI scanof head,chest,abdomen, pelvis,adrenal gland &
ovaries.
MANAGEMENT:
Goalof treatment is torelieve &reverse thesymptomsof acromegaly.
Surgical treatment is the1st line treatment
⚫ TRANSPHENOIDALHYPOPHYSECTOMY
Transsphenoidal meansthrough the sphenoid sinus. This is the air sinus
(cavity) at the back of your nose. Weremove the pituitary tumour through
thenose.Hypophysectomy referstothepituitary gland.
TYPES OF DIABETES INSIPIDUS
1. Central diabetesinsipidus
2. Nephrogenicdiabetesinsipidus
3. Psychogenic diabetesinsipidus
4. Gestational diabetesinsipidus
CAUSES
Central diabetesinsipidus:
⚫ Headtraumaor surgery
⚫ Pituitary or hypothalamictumor
⚫ Intracerebral occlusionor infection
Nephrogenicdiabetesinsipidus:
⚫ Systemicdiseaseinvolvingkidney:-
⚫ Multiplemyeloma
⚫ Sicklecell anemia
⚫ Polycystickidneydiseases
⚫ Pyelonephritis
⚫ Medicationsuchaslithium
PATHOPHYSIOLOGY
Central diabetesinsipidus:
⚫ Lossofvasopressinproducingcells
⚫ CausingdeficienciesinADHsynthesis
⚫ DeficiencyinADH,resultingin aninability to conservewater
⚫ Leadingtoextremepolyuria& poiydipsia
Nephrogenicdiabetesinsipidus:
⚫ Depressionof aldosteronereleaseorinability of nephrons torespondto
ADH,causingextremepolyuriaandpolydipsia.
SIGNS AND SYMPTOMS
Polyuria with urineoutputof 5to15Ldaily.
Polydipsia,especially adesire for coolfluids.
Markeddehydration,asevidencedbydrymucous
membrane,dryskin&weightloss.
Anorexia&epigastricfullness
Nocturia &relatedfatigue from interrupted sleep.
DIAGNOSTIC TEST RESULTS
Highserumosmolarity,usually above300mosmol/kg of water.
Lowurineosmolarity
,usually50to200mosmol/kgof water.
Lowurine–specificgravityof lessthan1.005.
Management:theobjectiveof therapyare:
1
. T
oreplaceADH,which is usually alongtermtherapeutic
programme.
2
. T
oensureadequatefluidreplacement
3
. T
oidentify&correct theunderlyingcause.
TREATMENT:
ReplacementofvasopressintherapywithintranasalorI.V
DDA
VPC(desmopressin acetate).
Correction ofdehydration andelectrolyteimbalance.
Thiazolediuretic increaserenal water reabsorption
Restriction of salt &proteinintake.
NURSING MANAGEMENT: Thenurse reviews thepatient history&
physical assessment.
Thenurseis responsible toeducate thepatient, family &other caregivers
about follow upcare,prevention of complication &emergencymeasures.
Thenurseshould demonstrate andmaketheclient understand about his
medical condition.
SIADH-SYNDROME OF
INAPPROPRIATE ANTI DIURETIC
HORMONE
SIADH,isadisorderof impaired waterexcretion
causedbytheinability to suppress secretionsordue
toexcessivesecretions&actionsof anti diuretic
hormone.
If water intakeexceedthereducedurineoutput i.e
concurine,theensuringwaterretentionleadstothe
development of hyponatremia.
MostcommoncauseofHypoosmolarEuvolemic
Hyponatremia.
MANAGEMENT
Fluidrestriction:
Is amainstay of therapy in mostpatient with SIADH,with asuggested
goal,intake ofless than800ml/ day.
Theassociated-vewaterbalanceinitially raisestheserumNaconc
towards normal&withmaintenance therapy in chronic SIADH,prevents
further reduction inserumsodium.
Intravenous saline:
Symptomaticor resistant=Hyponatremia in patient with SIADHoften
requires theadministration of NaCl.
INTRODUCTION
Eachpersonhas2adrenal gland,oneattached to
superior part of eachkidney
.
Eachadrenalglandis,in reality,two endocrineglands
with separateindependent function.
Adrenal glandconsist of 2parts:
1. Adrenalmedulla
2. Adrenalcortex
Adrenalmedulla: Presentat thecentreof thegland,
secretedcatecholamines andtheouterportion of gland.
Adrenalcortex: it secretessteroid hormones.Thesecretion
ofhormonefromtheadrenal cortex is regulatedbythe
hypothalamus-pituitary –adrenal axis.
Hypothalamus secretescorticotrophinreleasing
hormone(CRH),which stimulates thepituitary glandto
secreteACTH,which in turn stimulates theadrenal cortex to
glucocorticoid hormones(cortisol).
Increasedlevel of adrenal hormone inhibit theproductionof
CRH&ACTH.
This systemisanexampleof –vefeedbackmechanism.
ANATOMICAL STRUCTURE OF
ADRENAL GLAND
Right adrenal glandistriangular inshape
Left adrenal glandiscrescent inshape.
Left adrenal gland is moreelongated thanright &lie inmoresuperior position
thantheright one.
3TYPESOFSTEROIDHORMONEPRODUCEDBYADRENALCORTEX
ARE:-
1. Glucocorticoids
2. Mineralocorticoid
3. Sexhormones
ADRENALCORTEXISDIVIDEDINTO3ZONES:-
1. Zonaglomerulosa
2. Zonafasciculata
3. Zonareticularsis
CLINICAL FEATURES OF CUSHING
SYNDROME
W
eight gain/central obesity
Diabetes
Hirusitism
Hypertension
Skinchanges(abdominalstriae)
Muscleweakness
Menstrual irregularity
Depression
Osteoporosis
Hypokalemia
DIAGNOSIS
Biochemical test
Radiological investigation
NURSING MANAGEMENT
Decreaseriskof injury
Decreasing risk of infection
Preparing thepatient for allergy test.
Encouragingrest&activity
Promotingskinintegrity
Improvingbodyimage
PRIMARY HYPERALDOSTERONISM
(CONN’S DISEASE)
Primary aldosteronism (PA), also known as primary
hyperaldosteronism or Conn's syndrome, refers to the excess
production of the hormone aldosterone from the adrenal glands, resulting
in low renin levels.[1] This abnormality is caused by hyperplasia or tumors.
Many suffer from fatigue, potassium deficiency and high blood
pressure which may cause poor vision, confusion or headaches.
Primaryhyperaldosteronism(PHA)is definedbyhypertension,
hypokalemia&hypersecretionof aldosterone.
InPHA,plasma reninactivity is suppressed.
Amongpateients with hypertension theincidenceof
hypokalemia.
PHAis approximately 2%recent studies haverevealed that
upto12%ofhypertension patient havePHA,with normal
potassiumlevels.
CAUSESOFPHA:-
1. Aldosteroneproducingadencema.
2. Bilateraladrenalhyperplasia(ideopathic
hyperaldosteronism)
3. Aldosterone-producingadrenocortical carcinoma.
CLINICAL FEATURES
1. Most patient arebetween30-50yearsof agewith female
predominance.
2. Apartfromhypertension &hypokalemia,patient complains
of nonspecificsymptoms.
3. Headache,muscleweakness,cramps,polyuria,intermittent
paralysis,polydipsia &nocturia.
DIAGNOSIS
Assessment of potassiumlevels
Antihypertensive&diuretic therapy
Oncebiochemical diagnosisisconfirmed,MRI or CTscan
canbeperformed.
NURSING MANAGEMENT
Educatingpatient about self care
⚫ During preoperative&postoperativephasesof care ,the nurse
educatethe patient aboutfollow upmonitoringto ensurethat
pheochromocytomadoesnot reactivate.
Nurseprovideverbal &writteninstructionsabout
⚫ Theprocedurefor collecting 24hrs urine specimento monitor
urinefor catecholamineslevel.
Continuingcare
⚫ Thepatient is scheduled for periodic follow up appointments to
observefor return of normal bloodpressure&plasmafor urine
levelsof catecholamines.
TREATMENT
1. Laparoscopic resection is nowaroutine treatment
for pheochromocytoma.
2. If thetumor islarger than8-10cmor radiological
signsof malignancy aredetectedanapproach
shouldbeco
SUMMARY
The presentation includes the
Pituitary disorders
⚫ Gigantism
⚫ Acromegaly
⚫ Dwarfism
⚫ Diabetes insipidus
⚫ SIADH
Adrenal tumors
⚫ Cushing syndrome
⚫ Primary hyperaldosteronism
⚫ Adrenocortical carcinoma
⚫ Pheochromocytoma
Their causes,clinical features,diagnosis,treatment and
management have also been covered.
BIBLIOGRAPHY
Brunner’s & Suddharth’s text
book of MEDICAL SURGICAL
NURSING 13th edition.
https://www.endocrinweb.com
https://www.cancer.org.com
www.slideshare.com