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FARMAKOTERAPI HIPERTENSI

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1 FARMAKOTERAPI HIPERTENSI

2 Adalah kenaikan TD arteri yg tetap (JNC-7 = Joint National Committee)
HIPERTENSI : Adalah kenaikan TD arteri yg tetap (JNC-7 = Joint National Committee)

3 KLASIFIKASI TEK DARAH JNC-7
KLASIFIKASI SISTOL(mmHg) DIASTOL (mmHg) Normal <120 and <80 Prehypertension 120–139 or 80–89 Stage 1 Hypertension 140–159 or 90–99 Stage 2 Hypertension >160 or >100

4 Bila TDD < 90 mmHg & TDS ≥ 140 mmHg = isolated systole HT
Bila TDD/TDS > 180/120 mmHg Crisis Hypertenson

5 Definitions HPT emergency(crisis): Is characterized by a severe elevation in BP, complicated by evidence of impending or progressive target/end organ dysfunction VS HPT urgency: is a severe elevation in BP without progressive target organ dysfunction NB – these definitions do not specify absolute BP levels

6 Goal BP The Truth is Treatment Goal
Keep B.P. < 140/90 mm Hg in each patient This may be revised to 120/80 may be ? 110/70 MRFIT’s cut off values are 115/75 mm Hg The Truth is It is essential to keep the B.P at or below the goal But, It also matters how the goal B.P. is achieved !

7 PATOFISIOLOGI HT A.Hipertensi esensial (HT primer)= HT
Idiopatik, yg blm jelas penyebabnya.Dipenga- ruhi usia, kelamin, merokok, kholesterol, BB B.Hipertensi sekunder. Dipengaruhi oleh obat, penyakit ginjal, penyakit endokrin (DM, tiroid , Cushing)

8 Hypertension Hypertension means high blood pressure. High blood pressure is an increased pressure in your blood vessels, and therefore there is less space for your blood to travel through It can be caused by many factors such as stress, high cholesterol, and inactivity. It is classified into mild, moderate, and severe hypertension. If you have mild, moderate, or severe hypertension, you have an increased risk of having a heart attack or a stroke.

9 Atherosclerosis – Time line
Content Points: The pathological effects of atherosclerosis occur over decades. A subtle injury to the endothelium initiates the atherosclerotic process.3 Endothelial dysfunction underlies many stages in the progression of atherosclerosis from earliest onset to the lesions that result in coronary heart disease (CHD).4 Foam cells may infiltrate the vessel, progressing to a fatty streak. As the lesion progresses, small pools of extracellular lipid form within the smooth muscle layers, disrupting the intimal lining of the vessel. Progression to an advanced lesion, or atheroma, occurs when accumulated lipid, cells, and other plaque components disrupt the arterial wall. Progression of atheroma involves accumulation of smooth muscle cells that elaborate extracellular matrix macromolecules. Once the plaque becomes fibrous, the danger of rupture increases. This type of advanced lesion can be found beginning in the fourth decade of life. The clinically important complication of atheroma usually involve thrombosis. Arterial stenoses by themselves seldom cause acute unstable angina or acute myocardial infarction. Indeed, sizable atheroma may remain silent for decades or produce only stable symptoms, such as angina, precipitated by increased demand. Thrombus formation usually occurs because of physical disruption of atherosclerotic plaque. The majority of coronary thromboses result from a rupture of the plaque’s protective fibrous cap, which permits contact between blood and the highly thrombogenic material located in the lesion’s lipid core. The endothelium participates in the atherosclerotic process and remodeling through secretion of specific compounds.1 These will be discussed in later slides.

10 Endothelial NO Balance

11 Hypertension Tingkat tekanan darah adalah fungsi dari cardiac output dikalikan dengan resistensi perifer (perlawanan dalam pembuluh darah ke aliran darah) Dasar hemodinamik hipertensi MAP = CO x TPR MAP=mean arteria pressure; CO=cardiac output; TPR=total resistence perifer The diameter of the blood vessel affects blood flow. When the diameter is decreased, as in CHD, resistance and blood pressure increases. Two classes of of hypertension.  In 90-95% of patients presenting with hypertension, the cause is unknown.  This condition is called primary (or essential) hypertension.  The remaining 5-10% of hypertensive patients have hypertension that results secondarily from renal disease, endocrine disorders, or other identifiable causes. This form of hypertension is called secondary hypertension. Hemodynamic basis of hypertension.  Regardless of the origin of hypertension, the actual increase in arterial blood pressure is caused by either an increase in systemic vascular resistance (SVR) or an increase in cardiac output (CO). The former is determined by the vascular tone (i.e., state of constriction) of systemic resistance vessels, whereas the latter is determined by heart rate and stroke volume.  Therefore, in order to understand how arterial blood pressure can become elevated, it is necessary to understand the mechanisms that regulate both SVR and CO. 

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13 Determinants of arterial pressure
Cardiac output Stroke volume Heart rate Peripheral resistance Vascular structure Vascular function 1:22 PM

14 Regulation of arterial pressure (АP) by hemodynamic system
Formula: АP = CO · PR CO – cardiac output PR – peripheral vascular resistance (depended to arterioles tone) CO leads to PR and АP normalizes finally PR leads to CO and АP normalizes finally AP normal range: Systolic – (equilibration ) mm Hg Diastolic – (equilibration ) mm Hg

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16 FAKTOR RESIKO HT Faktor resiko mayor Hipertensi Merokok
Obesitas (BMI ≥30) Immobilitas Dislipidemia Diabetes mellitus Mikroalbuminuria atau perkiraan GFR<60 ml/min Umur (>55 tahun untuk laki-laki, >65 tahun untuk perempuan) Riwayat keluarga untuk penyakit kardiovaskular prematur (laki-laki < 55 tahun atau perempuan < 65 tahun)

17 Diseases Attributable to Hypertension
Stroke Coronary heart disease Heart failure Cerebral hemorrhage Myocardial infarction Slide 5 Studies show that a multitude of diseases are attributable to hypertension. They include: • Heart failure • Coronary heart disease • Myocardial infarction • Left ventricular hypertrophy and failure • Aortic aneurysm • Peripheral vascular disease • Retinopathy • Hypertensive encephalopathy • Chronic kidney failure • Cerebral hemorrhage • Stroke With so many diseases linked to hypertension, prompt and effective treatments have the potential to reduce many complications. Dustan HP, et al. Arch Intern Med 1996; 156: Left ventricular hypertrophy Hypertension Chronic kidney failure Aortic aneurysm Hypertensive encephalopathy Retinopathy All Vascular Peripheral vascular disease Adapted from: Arch Intern Med 1996; 156:

18 Target Organ Damage (TOD)
Heart Left ventricular hypertrophy (LVH) Angina or prior myocardial infarction (CHD) Prior Coronary revascularization PTCA or CABG Heart failure (Systolic / Diastolic dysfunction) Brain CVA Stroke or Transient Ischemic Attack (TIA) Kidney : Chronic kidney disease and CRF Vessels : Peripheral arterial disease PVD Eyes : Hypertensive Retinopathy

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20 Role of the vasopressin in arterial hypertension pathogenesis

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22 Prevalence of Hypertension by Age
18-29 30-39 40-49 50-59 60-69 70-79 80+ % Hypertensive 4 11 21 44 54 64 65 Can you see that age is a risk factor?

23 Stroke incidence 35–40% Myocardial infarction 20–25% Heart failure 50%
MANFAAT MENURUNKAN TD Stroke incidence 35–40% Myocardial infarction 20–25% Heart failure 50%

24 Tanda-Tanda Klinik HT 1. Pusing paroksismal 2. Berkeringat 3
Tanda-Tanda Klinik HT 1.Pusing paroksismal 2.Berkeringat 3.Takikardia 4.Palpitasi

25 Organ yg terkena HT : Heart Brain Stroke or transient ischemic attack
Left ventricular hypertrophy Angina or prior myocardial infarction Prior coronary revascularization Heart failure Brain Stroke or transient ischemic attack Chronic kidney disease Peripheral arterial disease Retinopathy

26 Untreated hypertension can result in:
Arteriosclerosis --Kidney damage Heart Attack --Stroke Enlarged heart --Blindness

27 Normal weight 350 to 450 g

28 Transverse Section of HEART - LVH
10 mm 25 mm In cross section,  this view of the heart shows the left ventricle in the center left of the picture. The heart is from a severe hypertensive.  The left ventricle is grossly thickened.  The myocardial fibers have undergone hypertrophy

29 Target Organ Damage What is single most imp. predictor of CHD, HF, Death ? What time course of HT to LVH to LVF to death ? Can LVH be regressed at all ? Will drugs help to regress LVH and ↓TOD ? How important is Micro-albuminuria ?

30 Progression of HT to LVH to HF
Progression of hypertension to LVH and heart failure Content Points: The two principal factors contributing to heart failure are hypertension and coronary artery disease, but hypertension is the more common. Hypertension is very frequently the initial step in pathophysiologic progression to heart failure, which is a complex syndrome that involves a variety of linked hemodynamic and metabolic changes.65 LVH and associated left ventricular dysfunction are among the most common cardiac sequelae of hypertension. LVH leads to heart failure through various mechanisms. Initially, mild LVH allows the heart to compensate for increases in vascular resistance. Ultimately, the increase in left ventricular wall thickness and left ventricular remodeling lead to diastolic dysfunction and subsequently to systolic dysfunction. In addition to pressure-related mechanical strain, pathologic changes that are a direct result of stimulation of the renin-angiotensin system also contribute to LVH. Clinically overt heart failure develops when the hypertrophied left ventricle can no longer maintain its output and begins the downward spiral of ventricular dilatation and symptomatic disease. The structural and functional changes associated with hypertension and the development of LVH and heart failure occur over decades and are preventable with effective antihypertensive treatment.

31 NON – FARMAKOLOGI FARMAKOLOGI
TERAPI : NON – FARMAKOLOGI FARMAKOLOGI

32 3.Achieve SBP goal especially in persons >50 years of age.
TUJUAN TERAPI HT : 1.Reduce CVD and renal morbidity and mortality. 2.Treat to BP <140/90 mmHg (Umum) or BP <130/80 mmHg in patients with diabetes or chronic kidney disease. 3.Achieve SBP goal especially in persons >50 years of age.

33 Tx NON-FARMAKOLOGI PENCEGAHAN & TERAPI 1.Bagi yg obese, turunkan BB
2.Diet garam (≤ 2.4g/hr) 3.Kurangi konsumsi lemak 4.Tidak merokok, kurangi kopi & alkohol 5.Istirahat cukup 6.Olahraga teratur.

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35 A.ACE-1 / ACE-2 (ARB) / ALFA1-BLOCKER
Tx FARMAKOLOGI A B C D A.ACE-1 / ACE-2 (ARB) / ALFA1-BLOCKER B.BETA-BLOCKERS C.CA-ANTAGONISTS D.DIURETICS

36 Anti Hypertensive drug classes
ACEi – Angiotensin converting enzyme inhibitors – Enalapril- let us call them ‘A’ ARB – Angiotensin Receptor Blockers – Losartan - Let us call them also as ‘A’ BB – Beta Receptor Blockers – Metoprolol, Carveidilol, Atenelol - let us call them ‘B’ CCB – Calcium channel blockers – Amlodepine Verapamil, Diltiazem - let us call them ‘C’ Diuretics – Hydrochlor Thiaz.- Furosemide, Spiranolactone - let us call them ‘ D ’

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40 Target Organ Damage - Assessment
Routine Tests Electrocardiogram, Echocardiography (desirable) Urinalysis for proteinuria, Microalbuminuria Blood glucose (F and PP), and Hematocrit Serum Na and K, Creatinine or GFR, Calcium Lipid Profile complete, Eye examination, ABI Optional tests X-Ray Chest PA 24 hr. urine albumin excretion or ACR More extensive testing is not generally indicated

41 Terapi Kombinasi Rasional kombinasi obat antihipertensi:
Ada 6 alasan mengapa pengobatan kombinasi pada hipertensi dianjurkan: 1. Mempunyai efek aditif 2. Mempunyai efek sinergisme 3. Mempunyai sifat saling mengisi 4. Penurunan efek samping masing-masing obat 5. Mempunyai cara kerja yang saling mengisi pada organ target tertentu 6. Adanya “fixed dose combination” akan meningkatkan kepatuhan pasien (adherence)

42 Hypertension – Why Combinations ?
If goal BP is not achieved by a single drug in full dose Then adding another agent will help achieve the goal BP Two agents sometimes nullify each others side effects Fixed dose combinations will reduce the no. of tablets Once daily formulations are good for compliance Sustained release or LA formulations for 24 h BP control If three drugs can’t achieve goal BP – Resistant HT

43 ANTIHIPERTENSI DI PUSKESMAS
1.Propanolol / Bisoprolol 2.Nifedipin / Adalat OROS / Amlodipin 3.Captopril / Lisinopril 4.HCT / Spironolakton 5.Reserpin

44 Fixed-dose combination yang paling efektif adalah sebagai berikut:
1. Penghambat enzim konversi angiotensin (ACEI) dengan diuretik 2. Penyekat reseptor angiotensin II (ARB) dengan diuretik 3. Penyekat beta dengan diuretik 4. Diuretik dengan agen penahan kalium 5. Penghambat enzim konversi angiotensin (ACEI) dengan antagonis kalsium 6. Agonis α-2 dengan diuretik 7. Penyekat α-1 dengan diuretic

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46 Lifestyle Modifications
ALGORITMA Tx HT Lifestyle Modifications Not at Goal Blood Pressure (<140/90 mmHg) (<130/80 mmHg for those with diabetes or chronic kidney disease) Initial Drug Choices Stage 2 Hypertension (SBP >160 or DBP >100 mmHg) 2-drug combination for most (usually thiazide-type diuretic and ACEI, or ARB, or BB, or CCB) Stage 1 Hypertension (SBP 140–159 or DBP 90–99 mmHg) Thiazide-type diuretics for most. May consider ACEI, ARB, BB, CCB, or combination. Without Compelling Indications Drug(s) for the compelling indications Other antihypertensive drugs (diuretics, ACEI, ARB, BB, CCB) as needed. With Compelling Indications Not at Goal Blood Pressure Optimize dosages or add additional drugs until goal blood pressure is achieved. Consider consultation with hypertension specialist.

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48 2000’s (cont) JNC 7 (cont) Diuretics first
Addition of a second drug from a different class > 2 drugs (combo good) >160/100-start with 2 drugs (diuretic/BB, diuretic/ACEI, diuretic/ARB, diuretic/CCB) Multiple drugs if CAD, DM, Renal disease Monotherapy response rate 40-50% Multiple meds response rate 75-80% Racial differences in response disappear with multiple drugs

49 Logical Combinations Diuretic b-blocker CCB ACE inhibitor a-blocker -
         -   ü   ü* * Verapamil + beta-blocker = absolute contra-indication     Kieran McGlade Nov 2001 Department of General Practice QUB

50 INDICATIONS CONTRAINDICATIONS
Compelling and possible indications and contrindications for the major classes of antihypertensive drugs                                 INDICATIONS               CONTRAINDICATIONS CLASSS OF DRUG COMPELLING POSSIBLE a-blockers Prostatism Dyslipidaemia Postural Hypotension Unrinary incontinence Angiotensin converting enzyme (ACE) inhibitors Heart failure Left ventricular dysfunction Chronic renal disease * Type II diabetic nephropathy Renal impairment * Peripheral vascular disease † Pregnancy Renovascular disease Angiotensin II receptor antagonists Cough induced by ACE inhibitor ‡  Heart failure Intolerance of other antihypertensive drugs Peripheral vascular disease b-blockers Myocardial infarction Angina Heart failure   Heart failure Dyslipidaemia Peripheral vascular disease Asthma or COPD Heart block Calcium antagonists (dihydropyridine) Isolated systolic hypertension (ISH) in elderly patients Angina Elderly patients   _    _ Calcium antagonists (rate limiting) Angina Myocardial infarction Combination with b-blockade Heart block Heart failure Thiazides Elderly patients including ISH Gout *  ACE inhibitors may be beneficial in chronic renal failure but should be used with caution. Close supervision and specialist  advice are needed when there is established and significant renal impairment †   Caution with ACE inhibitors and angiotensin II receptor antagonists in peripheral vascular disease because of association with renovascular disease. ‡   If ACE inhibitor indicated f  b-blockers may worsen heart failure, but in specialist hands may be used to treat heart failure  British Hypertension Society Guidelines 2000 Kieran McGlade Nov 2001 Department of General Practice QUB

51 KLASIFIKASI & MANAGEMEN HT PADA DEWASA
BP classification SBP* mmHg DBP* mmHg Lifestyle modification Initial drug therapy Without compelling indication With compelling indications Normal <120 and <80 Encourage Prehypertension 120–139 or 80–89 Yes No antihypertensive drug indicated. Drug(s) for compelling indications. ‡ Stage 1 Hypertension 140–159 or 90–99 Thiazide-type diuretics for most. May consider ACEI, ARB, BB, CCB, or combination. Drug(s) for the compelling indications.‡ Other antihypertensive drugs (diuretics, ACEI, ARB, BB, CCB) as needed. Stage 2 Hypertension >160 or >100 Two-drug combination for most† (usually thiazide-type diuretic and ACEI or ARB or BB or CCB).

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53 OBAT-OBAT LAIN YG SERING DIGUNAKAN
UTK Px HT ANTIPLATELET LIPID LOWERING OBAT DIABETES NEUROPROTEKTAN ANTIARITMIA DLL-NYA

54 HATI-HATI MENGGUNAKAN :
Presription Drugs: NSAIDs, including Coxibs Corticosteroids and anabolic steroids Oral contraceptive and sex hormones Vasoconstricting/sympathomimetic decongestants (ephedrin, PPA, Pseudoefedrin) Calcineurin inhibitors (cyclosporin, tacrolimus) Erythropoietin and analogues Monoamine oxidase inhibitors (MAOIs) Other: Licorice root Stimulants including cocaine, amfetamin (Ecstasy, Sabu2) Garam Excessive alcohol use

55 CONTOH KASUS RESEP Dr.Jantung Dr.Jantung R/.Tanapres 10 mg XXX
R/.Bisoprolol 5 mg XXX S.0-0-1 R/.Letonal 25 mg XXX R/.Analsik XV S.3dd 1 Pro : Tn. LK Dr.Jantung R/.Cedocard 5 mg 90 S. 3 dd 1 R/.Concor 2.5 mg 30 S R/.Rhinofed XV S R/.OBH Combi 1 fl S. 3 dd C R/.Xanax 0.5 mg 30 S.0-0-1 Pro : Ny.Zakky

56 TERIMA KASIH


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