CAREER POST GRADUATE INSTITUTE OF DENTAL SCIENCES AND HOSPITAL DEPARTMENT OF ORAL MEDICINE & RADIOLOGY Seminar Topic: " HYPERTENSION" " HYPERTENSION" Under the guidance of : Dr. Nitin Agarwal (H.O.D) Dr. Nitin Agarwal (H.O.D) Dr. Payal Tripathi Dr. Payal Tripathi Dr. Arti Sachdev Dr. Arti Sachdev Dr. Vasu Siddhartha Dr. Vasu Siddhartha Dr. Sudheer Shukla Dr. Sudheer Shukla Presented by : Aanshika Aanshika Tiwari Tiwari JR-1 1
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CAREER POST GRADUATE INSTITUTE OF DENTAL SCIENCES AND HOSPITAL
DEPARTMENT OF ORAL MEDICINE & RADIOLOGY
Seminar Topic:" HYPERTENSION"" HYPERTENSION"
Under the guidance of :Dr. Nitin Agarwal (H.O.D)Dr. Nitin Agarwal (H.O.D)Dr. Payal TripathiDr. Payal TripathiDr. Arti SachdevDr. Arti SachdevDr. Vasu SiddharthaDr. Vasu SiddharthaDr. Sudheer ShuklaDr. Sudheer Shukla
Presented by :
Aanshika Aanshika TiwariTiwari
JR-11
Hypertension is the abnormal
elevation of systolic blood
pressure above 140 mmHg or
elevation of diastolic blood
pressure above 90 mm Hg
VIII JNC, 2014
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Hypertension
Systolic BloodPressure (SBP)
Diastolic BloodPressure (DBP)
> 140 mmHg > 90 mmHg
Types of hypertensionTypes of hypertension
• Essential hypertension– 90%
– No underlying cause
• Secondary hypertension– Underlying cause
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Causes of Secondary Hypertension• Renal
– Parenchymal– Vascular– Others
• Endocrine• Miscellaneous• Unknown
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Classification
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Blood Pressure Classification
Normal <120 and <80
Prehypertension 120–139 or 80–89
Stage 1 Hypertension
140–159 or 90–99
Stage 2 Hypertension
>160 or >100
BP Classification
SBP mmHg
DBP mmHg
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INCIDENCE IN INDIA
• 25% of urban population and 10 % of rural population suffer from hypertension
• 70% of all hypertensive patients are stage I hypertension
• 12% of all hypertensive suffer from isolated systolic hypertension
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WHO ARE AT RISK ?
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Hypertension: Predisposing factors
• Advancing Age • Sex (men and postmenopausal women)• Family history of cardiovascular disease• Sedentary life style & psycho-social stress• Smoking ,High cholesterol diet, Low fruit
consumption• Obesity & wt. gain• Co-existing disorders such as diabetes, and
hyperlipidaemia• High intake of alcohol
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Etiology of Primary Hypertension
It is multifactorial High salt intake Heavy alcohol use Obesity Sedentary lifestyle Genetic factors
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Aetiology of Systemic Aetiology of Systemic HypertensionHypertension
A. Renal Renovascular stenosisPolycystic kidney diseaseglomerulonephritis
B. Endocrine • Primary aldosteronism• Cushing’s syndrome• Pheochromocytoma
DiureticsExample: Hydrochlorothiazide• Act by decreasing blood volume and cardiac
output.• Drugs of choice in elderly hypertensivesSide effects-• Hypokalaemia• Hyponatraemia• Hyperlipidaemia• Hyperuricaemia (hence contraindicated in gout)• Hyperglycaemia (hence not safe in diabetes)• Not safe in renal and hepatic insufficiency
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Beta blockers
Example: Atenolol, Metoprolol, nebivolol, • Block 1 receptors on the heart• Block 2 receptors on kidney and inhibit release of
renin• Decrease rate and force of contraction and thus
reduce cardiac output• Drugs of choice in patients with co-existent
coronary heart diseaseSide effects-
• lethargy, impotency, bradycardia
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Calcium channel blockersCalcium channel blockers
Example: Amlodipine• Block entry of calcium through calcium
channels• Cause vasodilation and reduce peripheral
resistance• Drugs of choice in elderly hypertensives and
those with co-existing asthma• Neutral effect on glucose and lipid levels
Side effects Flushing, headache, Pedal edema
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ACE inhibitorsExample: Ramipril, Lisinopril, Enalapril• Inhibit ACE and formation of angiotensin
II and block its effects• Drugs of choice in co-existent diabetes
mellitus, Heart failure
Side effects-dry cough, hypotension, angioedema
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Angiotensin II receptor blockers
Example: Losartan• Block the angiotensin II receptor
and inhibit effects of angiotensin II• Drugs of choice in patients with co-
existing diabetes mellitus
Side effects-safer than ACEI, hypotension,
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Alpha blockers
Example: prazosin
• Block -1 receptors and cause vasodilation
• Reduce peripheral resistance and venous return
Side effects-
Postural hypotension,
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POSTURAL HYPERTENSIONsupine-to-standing BP decrease >20 mmHg systolic or >10 mmHg diastolic.
Management:i. Assessment of consciousnessii. Position patient in supine with feet slightly elevatediii. Assess ABCiv. Initiate definitive care
• Administration of O2• Monitor vital signs
v. Subsequent management after consciousness/medical consultation on delayed recovery
vi. Discharge 40
Choice of antihypertensive drugs in various coexisting conditionscondition drugs
HYPERTENSIVE CRISISHYPERTENSIVE EMERGENCIES- High BP associated with target organ damage. Requires treatment in ICU with constant monitoring of BPHYPERTENSIVE URGENCIES- High BP but no organ damage. Treatment : -Sodium nitroprusside -Nifedipine -Nitroglycerin -Hydralazine -Labetolol
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Causes of Resistant Hypertension
Improper BP measurement Excess sodium intake Inadequate diuretic therapy Medication
• Inadequate doses• Drug actions and interactions (e.g., (NSAIDs), illicit drugs, sympathomimetics, OCP)• Over-the-counter drugs and some herbal supplements
Excess alcohol intake Identifiable causes of HTN
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HYPERTENSION MANAGEMENT IN DENTISTRY
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GUIDELINES FOR BLOOD PRESSURE (ADULT)
BLOOD PRESSURE (in mm Hg)
ASA CLASSIFICATION
DENTAL THERAPY CONSIDERATION
<140 & <90 I
1) Routine dental management.2) Recheck in 6 months.
140-159 & 90-94 II
1) Recheck BP prior to dental treatment for three consecutive appointments; if all exceed these guidelines , medical consultation is indicated.
2) Routine dental management.3) Stress reduction protocol as
indicated.46
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BLOOD PRESSURE ( in mm Hg)
ASA CLASSIFICATION
DENTAL THERAPY CONSIDERATION
160-199 &/or 95-114 III
1)Recheck blood pressure in 5 minutes.2)If still elevated ,medical consultation before dental therapy.3)Routine dental therapy.4)Stress reduction protocol.
>200 &/or >115 IV
1)Recheck blood pressure in 5 minutes.2)Immediate medical consultation if still elevated.3)No dental therapy, routine or emergency , until elevated BP corrected.4)Emergency dental therapy with drugs5)Refer to hospital if immediate dental therapy indicated.
PRE OPERATIVE MEDICATION & MANAGEMENT
Patient BP should be monitored & controlled within normal.
To antihypertensive patient morning dose of medication prior to surgery must be given.
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INTRA AND POST OPERATIVE MANAGEMANT
1) Blood pressure should be monitored continuously.2)Patient cardiac status also monitored. 3) Antihypertensive must be continued. 4) If the procedure is performed under local anesthesia , the local anesthetic without adrenaline is to be used.
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CONCLUSION• Hypertension is a major cause of morbidity and mortality, and
needs to be treated
• It is an extremely common condition; however it is still under-diagnosed and undertreated
• Hypertension is easy to diagnose and easy to treat
• Aim of the management is to save the target organ from the deleterious effect
• Besides pharmacology we have other choices and one has to be acquainted with that choice
• Life style modification should always be encouraged in all Hypertensive patients