This document discusses drug therapy considerations in the elderly population. Key points include:
- Physiological changes that occur with aging impact drug absorption, distribution, metabolism and excretion requiring dosage adjustments.
- Polypharmacy is common due to multiple diseases and increases risk of drug interactions.
- Adverse drug reactions are more frequent in the elderly. Drugs should be started at low doses and titrated carefully.
- Drug selection should consider potential side effects, dosage forms that are easy to take, and affordability. Close monitoring for side effects is important.
Anti-hypertensive agent and Recent developementsnamanjain727
1.To study chemistry, SAR, mechanism of action, side effects, therapeutic uses of various anti-hypertensive drugs.
2.To emphasize on the newer current upcoming drugs for the treatment of hypertension.
hypertension, simplified, jnc 8, treatment and newer modalities to treat. surgical procedures involved for hypertension and jnc 8 versus jnc 7 is compared in this ppt, and also, prevelance and epidemeiology of hypertension is explained. antihypertensives for preffered class and age are explained
Anti-hypertensive agent and Recent developementsnamanjain727
1.To study chemistry, SAR, mechanism of action, side effects, therapeutic uses of various anti-hypertensive drugs.
2.To emphasize on the newer current upcoming drugs for the treatment of hypertension.
hypertension, simplified, jnc 8, treatment and newer modalities to treat. surgical procedures involved for hypertension and jnc 8 versus jnc 7 is compared in this ppt, and also, prevelance and epidemeiology of hypertension is explained. antihypertensives for preffered class and age are explained
hypertension is a condition arrising due to increased symphathetic tone so drugs therapies are administered for minimising disease sevearity and further complications. Drug therapy includes drugs like alpha blockers, beta blockers, ACE INHIBITORS, ARBs, vasodilators,direct renin inhibitors, reserpine,prostaglandin analogs, calcium channel blockers for minimising excessive pressure and increased contractility of the heart.
hypertension is a condition arrising due to increased symphathetic tone so drugs therapies are administered for minimising disease sevearity and further complications. Drug therapy includes drugs like alpha blockers, beta blockers, ACE INHIBITORS, ARBs, vasodilators,direct renin inhibitors, reserpine,prostaglandin analogs, calcium channel blockers for minimising excessive pressure and increased contractility of the heart.
1. Altered Physiology
2. Pharmaceutical factors
3. Pharmacokinetic factors
4. Pharmacodynamic factors
5. Adverse Drug Reactions in elderly
6. A few examples
7. THANK YOU
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Prioritize Safety and Ethics: Safety and ethical principles must be paramount.
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Stewardship is the act of taking good care of something.
Antimicrobial stewardship is a coordinated program that promotes the appropriate use of antimicrobials (including antibiotics), improves patient outcomes, reduces microbial resistance, and decreases the spread of infections caused by multidrug-resistant organisms.
WHO launched the Global Antimicrobial Resistance and Use Surveillance System (GLASS) in 2015 to fill knowledge gaps and inform strategies at all levels.
ACCORDING TO apic.org,
Antimicrobial stewardship is a coordinated program that promotes the appropriate use of antimicrobials (including antibiotics), improves patient outcomes, reduces microbial resistance, and decreases the spread of infections caused by multidrug-resistant organisms.
ACCORDING TO pewtrusts.org,
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According to WHO,
Antimicrobial stewardship is a systematic approach to educate and support health care professionals to follow evidence-based guidelines for prescribing and administering antimicrobials
In 1996, John McGowan and Dale Gerding first applied the term antimicrobial stewardship, where they suggested a causal association between antimicrobial agent use and resistance. They also focused on the urgency of large-scale controlled trials of antimicrobial-use regulation employing sophisticated epidemiologic methods, molecular typing, and precise resistance mechanism analysis.
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According to the 2019 report, in the US, more than 2.8 million antibiotic-resistant infections occur each year, and more than 35000 people die. In addition to this, it also mentioned that 223,900 cases of Clostridoides difficile occurred in 2017, of which 12800 people died. The report did not include viruses or parasites
VISION
Being proactive
Supporting optimal animal and human health
Exploring ways to reduce overall use of antimicrobials
Using the drugs that prevent and treat disease by killing microscopic organisms in a responsible way
GOAL
to prevent the generation and spread of antimicrobial resistance (AMR). Doing so will preserve the effectiveness of these drugs in animals and humans for years to come.
being to preserve human and animal health and the effectiveness of antimicrobial medications.
to implement a multidisciplinary approach in assembling a stewardship team to include an infectious disease physician, a clinical pharmacist with infectious diseases training, infection preventionist, and a close collaboration with the staff in the clinical microbiology laboratory
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to minimize the developme
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3. Reasons for considering drug therapy in
elderly as a specific group
Physiological and pharmacological changes in elderly
Elderly consume good portion of health expenditure
ADRs more common in elderly
Polypharmacy more (multiple diseases): drug interactions
more
Increased error in taking medicines
Frailty, poor appetite and nutrition, forgetfulness,visual
impairment, lack of self care, lack of supervision, financial
problems
4. Physiological changes
Changes in body composition : lean body mass,
body size, body water,bone density, albumin AND Increased
body fat & α1 acid glycoprotein
GIT : gastric acidity,Delayed gastric emptying time, in GIT
& liver blood flow.
RS : in total vital capacity & bronchial ciliary function
CVS : in baroreceptor activity,COP & myocardial sensitivity to
beta agonists/antagonists
Renal : GFR,renal blood flow& tubular secretion
NS : Cognition defects,Reduction in central NTs, Impaired
cerebral autoregulation
5. Physiological changes contd….
GU : Prostate hypertrophy in males,Vaginal
atrophy and menopause in females
Endocrine : Increased incidence of DM & thyroid
disorders
Musculoskeletal : Reduction in muscle mass ,Power &
Joint flexibility.
7. Pharmaceutical factors
Difficult to swallow Tab , Capsules
Easy to swallow syrups, suspensions
Medicines should be in easily opened containers
Labelling in large print , clear
8. Pharmacokinetic factors
Absorption : Drugs absorption from intestine is slow
( decreased motility & decreased blood flow)
Distribution : Increase in free acidic drugs (decreased plasma
albumin & decrease in free basic drugs (increased α1 acid
glycoprotein). Lipid soluble drugs accumulate more (body fat more in
elderly)
Metabolism : Enzyme activity in liver decreasedoral
bioavailability of drugs with high first pass metabolism increased.
Excretion : Excretion of drugs decreased (renal function reduction).
Dose of drugs excreted through kidney has to be reduced.
11. ADRs peculiar to elderly
Treatment of HTN often results in postural hypotension, falls,
injury (cerebral autoregulation deficient, peripheral autonomic
responses sluggish in response to hypotension)
Diuretics lead to hypokalemia & can lead to digitalis toxicity if co-
administered.
Brisk diuresis can lead to A/c urinary retension in old men with
BPH
Precipitation of gout with diuretics
Confusion precipitated with anticholinergis/antihistaminics
Use of antipsychotics can lead to parkinsonism for which elderly
are more prone
Greater incidence of peptic ulcer with NSAIDs(due to decreased
clearance of NSAIDs)
13. CNS drugs
Sedative hypnotics
Prolongation of half life of benzodiazepines, barbiturates
(due to decreased metabolism-excretion)
Half life of Lorazepam,Oxazepam less
affected. Hence preferred over Diazepam,
barbiturates
Side effects like ataxia, motor incoordination to be looked for
while prescribing these drugs.
14. CNS drugs
Opioid analgesics
Elderly sensitive to respiratory depression due to decreased
respiratory reserve.
Morphine, codeine use justified in chronic painful conditions but
with caution
15. CNS drugs
Antipsychotics
Classical antipsychotics associated with EPS & can worsen
Parkinsonism if present.Their Anticholinergic effects can worsen
BPH, AD if present. Alpha blocking property (CPZ) can cause
orthostatic hypotension
Atypical antipsychotics (eg :Olanzapine,Aripiprazole) preferred.
Antidepressants
Avoid TCA with anticholinergic S/E ( Preferred – Nortriptline,
Desipramine)
Safe - SSRI
16. CNS drugs
Antimania
Li excreted by kidney. Doses in elderly should be adjusted
depending on kidney function.Thiazides reduce Li clearance. Li
doses should be reduced further in presence of thiazides.
Carbamazepine, Valproic acid preferred over Li
17. CVS
Antihypertensives
Thiazides are 1st
step in Rx of HTN. Low doses are used because
of higher incidence of arrhythmias, DM, gout in elderly.
(hypokalemia, hyperglycemia, hyperuricemia are S/E of thiazides)
CCBs are safe & useful if angina is coexistent
B blockers less useful unless heart failure present. Can be
dangerous in COPD patients. Can cause bradycardia in elderly.
ACEI less useful unless DM/heart failure present
Check for orthostatic hypotension in all elderly receiving
antihypertensives
18. CVS
Cardiac glycosides
Digoxin - half life increased as Clearance decreased
(decreased renal function). Hence digoxin dose to be
adjusted according to kidney function.
Elderly more sensitive to digoxin induced arrhythmias &
Extra cardiac side effects
19. cvs
Antiarrhytmics
Avoid Disopyramide due to its anticholinergic effects &
negative inotropic effects.
Reduce dose of Qunidine, Lignocaine (as their excretion
through kidney reduced)
23. Principles of treatment in elderly
Careful drug history
Prescribe only for specific & rational indication
Define the goal of therapy
Start with lowest dose & titrate
Avoid Polypharmacy
If possible-One drug for two indications
Avoid symptomatic treatment without specific diagnosis
Choose the right dosage forms
Financial problems – prescribe cheaper alternatives
rule out non compliance/errors in taking drugs
Watch for ADRs & drug interactions
25. Introduction
Most drugs administered to mother can cause placenta and
affect the fetus
Teratogenic affects are the important consideration while
prescribing during pregnancy
History : Thalidomide disaster
26. USFDA drug categories in
pregnancy
A Adequate studies in pregnant women,
show no risk to fetus
Inj MgSo4, thyroxine,
folic acid
B Adequate human studies lacking but animal
studies show no risk to fetus OR adequate studies
in pregnant women show no risk to fetus but
animal studies have shown an adverse effect on
fetus
Penicillin, Amox,
erythromycin, paracetamol,
lignocaine, cefaclor
C No adequate studies in pregnant women, animal
studies are lacking/show adverse effect on fetus,
but potential benefit may warrant use of the drug in
pregnant woman despite the potential risk (RISK
CAN’T BE RULED OUT)
Most drugs (morphine,
steroids, adrenaline,
bupivacaine, atropine)
D Evidence of fetal risk, but potential benefit may be
acceptable despite potential risk (POSITIVE
EVIDENCE OF RISK)
Aspirin, antiepileptics
X Studies in humans/animals show fetal risks.
Absolutely contraindicated
Isotretinoin, estrogens,
cytotoxic drugs
28. Principles of prescribing in
pregnancy
Wherever possible, use non drug therapy
Prescribe drugs only when definitively needed
As far as possible, avoid medication in the first trimester of
pregnancy
Use lowest effective dose for shortest period & if possible
give drug intermittently
Choose drugs having best safety record over time
Avoid newer drugs unless safety is clearly established
Discourage patient from self medication & OTC.
29. Prescribing for common problems during
pregnancy
Nausea, vomiting Reassurance, high carbohydrate
diet, antihistaminic-antiemetic
(diphenhydramine, doxylamine)
Heartburn Avoid fatty food/alcohol/smoking. Non
systemic antacids & Metoclopramide
constipation High fibre diet, plenty of oral fluids, mild
laxatives like milk of magnesia, bisacodyl
31. ANTIHYPERTENSIVES
Alpha methyl dopa, CCB, labetalol B blockers, ACEI, ARBs
HEART DISEASE
Similar treatment as non pregnant with
Digoxin
ANTICOAGULANT
Heparin warfarin
ASTHMA
Inhaled B agonists, inhaled steroids
DIABETES MELLITUS
Diet restriction, insulin if needed OHA
THYROTOXICOSIS
Propylthiouracil> carbimazole Radioactive iodine
EPILEPSY
PB , (Phenytoin) (supplement folic acd &vit K) Valproic acid, Carbamazepine
32. Other CNS drugs
BZD, Barbiturates, antidepressants,opioids (best avoided
near term to avoid neonatal CNS depression)
Lithium
33. Prescribing during lactation
Most drugs administered to lactating mother detected in
breast milk(in lower conc than maternal plasma)
Ideally medicines to be taken 30-60 min after nursing or 3-4
hrs before next feed to allow time for many drugs to clear
from mother’s blood.
Drugs for which safety during lactation not established
should be avoided/breast feeding avoided during their
use.Eg : Anticancer drugs, immunomodulators
34. Drugs excreted in high conc in breast milk & those which can
cause adverse effects in infant : Tetracyclines, INH, Sedative-
hypnotics, Opioids, Lithium, radioactive iodine
Drugs which are excreted in small amounts in breast milk but
can cause adverse effects in fetus: Penicillin (hypersensitivity),
sulfonamides(hypersensitivity, kernicterus, hemolysis in G6PD
deficient infants)
35. Drugs that are safe : insulin, adrenaline(destroyed in gut of
infant)
warfarin, caffeine, digoxin, propranolol,
thiazides, spirinolactone, tolbutamide,
ACEI, Antihistaminics, Carbamazepine,
Rifampicin, Pyrazinamide, Ethambutol,
Nifedipine, Clavulanic acid (very low
conc in milk…hence safe)