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8
Textbook of Pharmacotherapeutics
If something does not exist, it is necessary to weigh the potential risk from the benefit
and do all that in partnership with the patient, where our decision in the end, in fact,
will be shared.
Step 5: Efficacy Evaluation of EBM Application on a Patient
The final step is the assessment of evidence-based approach and efficiency of its
application to a specific patient. During this process it is critical to assess whether
certain evidence, which is applied to the patient, caused changes to better and that to
the extent that it is confirmed by research. If the data differ significantly, it would be
necessary to investigate why some patients did not respond to the changes introduced
in the expected manner and what can be done to change it.
Main Guidelines
If possible, incorporate need assessment for preventive activities as well as counseling
and education in acute visit.
Estimate patient’s risk factors during visits and provide counseling and education
for identified risks. All clinical visits, whether acute or chronic, provide an opportunity
for preventive counseling and planned care for paediatric patients.
There are specific intervals when a healthy child should visit a doctor. For
adolescents—twice in age between 13 and 18 years.
Specific guidelines for adolescents-screening
• Risk estimation
• Interval anamnesis
• Physical and mental development estimation
• Physical examination
• Blood pressure
• Pap test starts with age of 18 or since beginning of sexual activity within maximal
intervals of 3 years)
• Specific guidelines for adolescents—additional screening for those under high
risk
• Tuberculosis screening
• Lipid levels
• Examination of testicles
• Testing on sexually transmitted diseases
Specific guidelines for adolescents-counseling and education
• Good evidences to be included in practice:
– Limited intake of saturated fats
– Supplement with folic acid
– Stop smoking
– Problems of alcohol drinking
• Fairly good evidences to be included in practice:
– Caloric and nutritional balance in nutrition
– Physical activity
– Drinking and driving
Pharmacotherapeutics
– Use of seat belts
– Prevention of unwanted pregnancy
– Protection from the ultraviolet (UV) radiation
– Dental and periodontal diseases
Practical applications
• Incorporate in each visit preventive activities.
• Conduct screening and additional screenings for those under increased risk.
• Involve counseling and education for which exist good or fair evidences.
Good doctors apply their clinical observation and experience, together with the best
scientific evidence from medical literature. Without constant monitoring of new
medical achievements treatment may become obsolete, and, in some cases harmful to
the patients. EBM reduces the value of intuition, non-systematic clinical experience
and pathophysiology as sufficient basis in making clinical decisions, and emphasizes
the value of evidence obtained by clinical research. Today, patients and other health
care users themselves search the internet and find information that often does not
correspond to scientific knowledge, so determining the validity of evidence and new
knowledge should be left to doctors.
EBM requires new knowledge from physicians, most notably access to medical
databases, the ability to search medical literature and basic skills in the interpretation
of epidemiological and statistical findings. This should be used, not only by doctors
but also nurses, patients themselves and health institutions. The importance of EBM
is becoming more widely recognized in our country. Each doctor should use scientific
evidence in treating their patients rather than just clinical experience and intuition. Its
real purpose is for the doctor to select the best possible solution for the patient based
on the best available evidence, in order to provide with the best possible healthcare in
every way. It is also used to avoid major mistakes during treatment, which improves
the quality of health care provided to the patient. In a broader sense, it can save the
lives of our patients. EBM requires new knowledge from the physician, which includes
knowledge of English language and work on the computer, which allows access to
medical databases, the ability to search medical literature and basic skills in the
interpretation of epidemiological and statistical results. Since each physician must, in
one way or another, seek valid information, we can say that the proper use of EBM
saves doctors time and raises their level as well as the quality of provided medical
services, and increases satisfaction of the health professionals.
9
ESSENTIAL MEDICINES
The Alma-Ata Declaration, adopted in 1978 at the International Conference on
Primary Health Care, underlines that health is a fundamental human right and that
achieving the best possible level of health is a major global societal goal. One of the
eight fundamental components of primary health care specified in the Alma-Ata
Declaration is the provision of essential medicines. Medicines are essential components
of health care, and modern health care would be impossible to imagine without them.
Medicines are without a doubt one of humanity’s most powerful weapons in the fight
against sickness and illness. Not only do they save lives and promote health, but they
also help to prevent outbreaks and diseases. Having access to medicines is one of the
fundamental rights of every person.
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Textbook of Pharmacotherapeutics
The Concept of Essential Medicines
In 1977, the World Health Organization (WHO) introduced the concept of essential
medicines. Essential medicines, as defined by the World Health Organization (WHO),
are those that meet the population’s most important healthcare needs. They are
selected based on efficacy, safety, and cost-effectiveness. Essential medicines should
always be provided in adequate amounts, in the appropriate dosage forms, with
assured quality and adequate information, and at a price that individuals and
communities can afford within the framework of functioning health systems.
While the open pharmaceutical market is flooded with a vast number of medicines,
many of which have questionable value, an essential drug list contains cost-effective
and safe medicines.
The concept of essential medicines has been widely accepted as a powerful tool to
promote health equity, and its impact is remarkable as essential medicines are one of
the most cost-effective elements in health care.
The selection of essential medicines is based on several factors like efficacy, safety,
public health relevance, and comparative cost-effectiveness of available treatments.
Other elements that are taken into account include local demography and illness
patterns, treatment facilities, available personnel's training and expertise, local
availability of specific pharmaceutical goods, financial resources, and environmental
concerns. When choosing drugs for the list, the generic name of the medicine is taken
into account. Lists of essential medicines also guide the procurement and supply of
medicines in the public sector.
WHO Model List of Essential Medicines—22nd List (2021)
The core list presents a list of minimum medicines required for a basic healthcare
system and includes the most efficacious, safe, and cost-effective medicines for
priority conditions (Table 1.1).
Table 1.1: WHO Model List of Essential Medicines—22nd List (2021)
Section Therapeutic category Total number of
preparations
1. ANAESTHETICS, PREOPERATIVE MEDICINES AND MEDICAL GASES
1.1 General anaesthetics and oxygen
1.1.1 Inhalational medicines 4
1.1.2 Injectable medicines 3
1.2 Local anaesthetics 3
1.3 Preoperative medication and sedation for short-term procedures 3
1.4 Medical gases 1
2. MEDICINES FOR PAIN AND PALLIATIVE CARE
2.1 Non-opioids and non-steroidal anti-inflammatory medicines (NSAIMs) 3
2.2 Opioid analgesics 6
2.3 Medicines for other common symptoms in palliative care 19
Contd.
Pharmacotherapeutics
Table 1.1: WHO Model List of Essential Medicines—22nd List (2021) (Contd.)
Section Therapeutic category Total number of
preparations
3. ANTIALLERGICS AND MEDICINES USED IN ANAPHYLAXIS 8
4. ANTIDOTES AND OTHER SUBSTANCES USED IN POISONINGS
4.1 Non-specific 1
4.2 Specific 14
5. ANTICONVULSANTS/ANTIEPILEPTICS 10
6. ANTI-INFECTIVE MEDICINES
6.1 Anthelminthics
6.1.1 Intestinal anthelmintics 7
6.1.2 Antifilarials 3
6.1.3 Antischistosomals and other antitrematode medicines 3
6.1.4 Cysticidal medicines 3
6.2 Antibacterials
6.2.1 Access group antibiotics 20
6.2.2 Watch group antibiotics 14
6.2.3 Reserve group antibiotics 8
6.2.4 Antileprosy medicines 3
6.2.5 Antituberculosis medicines 28
6.3 Antifungal medicines 12
6.4 Antiviral medicines
6.4.1 Antiherpes medicines 2
6.4.2 Antiretrovirals
6.4.2.1 Nucleoside/Nucleotide reverse transcriptase inhibitors 4
6.4.2.2 Non-nucleoside reverse transcriptase inhibitors 2
6.4.2.3 Protease inhibitors 4
6.4.2.4 Integrase inhibitors 2
6.4.2.5 Fixed-dose combinations of antiretroviral medicines 6
6.4.2.6 Medicines for prevention of HIV-related opportunistic infections 1
6.4.3 Other antivirals 4
6.4.4 Antihepatitis medicines
6.4.4.1 Medicines for hepatitis B
6.4.4.1.1 Nucleoside/Nucleotide reverse transcriptase inhibitors 2
11
Contd.
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Textbook of Pharmacotherapeutics
Table 1.1: WHO Model List of Essential Medicines—22nd List (2021) (Contd.)
Section Therapeutic category Total number of
preparations
6.4.4.2 Medicines for hepatitis C
6.4.4.2.1 Pangenotypic direct-acting antiviral combinations 5
6.4.4.2.2 Non-pangenotypic direct-acting antiviral combinations 3
6.4.4.2.3 Other antivirals for hepatitis C 2
6.5 Antiprotozoal medicines
6.5.1 Antiamoebic and antigiardiasis medicines 3
6.5.2 Antileishmaniasis medicines 4
6.5.3 Antimalarial medicines
6.5.3.1 For curative treatment 14
6.5.3.2 For chemoprevention 6
6.5.4 Antipneumocystosis and antitoxoplasmosis medicines 3
6.5.5 Antitrypanosomal medicines
6.5.5.1 African trypanosomiasis 7
6.5.5.2 American trypanosomiasis 2
6.6 Medicines for ectoparasitic infections 2
7. ANTIMIGRAINE MEDICINES
7.1 For treatment of acute attack 4
7.2 For prophylaxis 1
8. IMMUNOMODULATORS AND ANTINEOPLASTICS
8.1 Immunomodulators for non-malignant disease
8.1 Antineoplastics and supportive medicines 8
8.2.1 Cytotoxic medicines 35
8.2.2 Targeted therapies 12
8.2.3 Immunomodulators 5
8.2.4 Hormones and antihormones 16
8.2.5 Supportive medicines 4
9. ANTIPARKINSONISM MEDICINES 3
10. MEDICINES AFFECTING THE BLOOD
10.1 Antianaemia medicines 7
10.2 Medicines affecting coagulation 15
10.3 Other medicines for haemoglobinopathies 3
Contd.
Pharmacotherapeutics
Table 1.1: WHO Model List of Essential Medicines—22nd List (2021) (Contd.)
Section Therapeutic category Total number of
preparations
11. BLOOD PRODUCTS OF HUMAN ORIGIN AND PLASMA SUBSTITUTES
11.1 Blood and blood components 4
11.2 Plasma-derived medicines
11.2.1 Human immunoglobulins 4
11.2.2 Blood coagulation factors 2
11.3 Plasma substitutes 2
12. CARDIOVASCULAR MEDICINES
12.1 Antianginal medicines 6
12.2 Antiarrhythmic medicines 8
12.3 Antihypertensive medicines 26
12.4 Medicines used in heart failure 16
12.5 Antithrombotic medicines
12.5.1 Anti-platelet medicines 2
12.5.2 Thrombolytic medicines 2
12.6 Lipid-lowering agents 5
13. DERMATOLOGICAL MEDICINES (topical)
13.1 Antifungal medicines 5
13.2 Anti-infective medicines 3
13.3 Anti-inflammatory and antipruritic medicines 5
13.4 Medicines affecting skin differentiation and proliferation 10
13.5 Scabicides and pediculicides 3
14. DIAGNOSTIC AGENTS 4
14.1 Ophthalmic medicines 4
14.2 Radiocontrast media 5
15. ANTISEPTICS AND DISINFECTANTS
15.1 Antiseptics 5
15.2 Disinfectants 5
16. DIURETICS 10
17. GASTROINTESTINAL MEDICINES
17.1 Antiulcer medicines 4
17.2 Antiemetic medicines 8
17.3 Anti-inflammatory medicines 4
Contd.
13
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Textbook of Pharmacotherapeutics
Table 1.1: WHO Model List of Essential Medicines—22nd List (2021) (Contd.)
Section Therapeutic category Total number of
preparations
17.4 Laxatives 2
17.5 Medicines used in diarrhoea
17.5.1 Oral rehydration 1
17.5.2 Medicines for diarrhoea 1
18. MEDICINES FOR ENDOCRINE DISORDERS
18.1 Adrenal hormones and synthetic substitutes 2
18.2 Androgens 1
18.3 Estrogens ?
18.4 Progestogens 2
18.5 Medicines for diabetes
18.5.1 Insulins 3
18.5.2 Oral hypoglycaemic agents 5
18.6 Medicines for hypoglycaemia 2
18.7 Thyroid hormones and antithyroid medicines 6
19. IMMUNOLOGICALS
19.1 Diagnostic agents ?
19.2 Sera, immunoglobulins and monoclonal antibodies 4
19.3 Vaccines 12 (for all?)
20. MUSCLE RELAXANTS (PERIPHERALLY-ACTING) AND
CHOLINESTERASE INHIBITORS 5
21. OPHTHALMOLOGICAL PREPARATIONS
21.1 Anti-infective agents 13
21.2 Anti-inflammatory agents 1
21.3 Local anaesthetics 1
21.4 Miotics and antiglaucoma medicines 5
21.5 Mydriatics 4
21.6 Anti-vascular endothelial growth factor (VEGF) preparations 1
22. MEDICINES FOR REPRODUCTIVE HEALTH AND PERINATAL CARE
22.1 Contraceptives
22.1.1 Oral hormonal contraceptives 4
22.1.2 Injectable hormonal contraceptives 3
22.1.3 Intrauterine devices 2
Contd.
Pharmacotherapeutics
Table 1.1: WHO Model List of Essential Medicines—22nd List (2021) (Contd.)
Section Therapeutic category Total number of
preparations
22.1.4 Barrier methods 2
22.1.5 Implantable contraceptives 2
22.1.6 Intravaginal contraceptives 2
22.2 Ovulation inducers 1
22.3 Uterotonics 6
22.4 Antioxytocics (tocolytics) 1
22.5 Other medicines administered to the mother 3
22.6 Medicines administered to the neonate 6
23. PERITONEAL DIALYSIS SOLUTION 1
24. MEDICINES FOR MENTAL AND BEHAVIOURAL DISORDERS
24.1 Medicines used in psychotic disorders 6
24.2 Medicines used in mood disorders
24.2.1 Medicines used in depressive disorders 7
15
24.2.2 Medicines used in bipolar disorders 3
24.3 Medicines for anxiety disorders 1
24.4 Medicines used for obsessive compulsive disorders 1
24.5 Medicines for disorders due to psychoactive substance use 5
25. MEDICINES ACTING ON THE RESPIRATORY TRACT
25.1 Antiasthmatic medicines and medicines for chronic obstructive 20
pulmonary disease
26. SOLUTIONS CORRECTING WATER, ELECTROLYTE AND
ACID–BASE DISTURBANCES
26.1 Oral 2
26.2 Parenteral 6
26.3 Miscellaneous 1
27. VITAMINS AND MINERALS 12
28. EAR, NOSE AND THROAT MEDICINES 5
29. MEDICINES FOR DISEASES OF JOINTS
29.1 Medicines used to treat gout 1
29.2 Disease-modifying anti-rheumatic drugs (DMARDs) 6
29.3 Juvenile joint diseases 1
30. DENTAL PREPARATIONS 3
16
Textbook of Pharmacotherapeutics
Table 1.2: National List of Medicines 2015
Section Therapeutic category Total number of
preparations
1 Anesthetic agents 16
2 Analgesics, antipyretics, nonsteroidal anti-inflammatory medicines, 15
medicines used to treat gout and disease modifying agents used in
rheumatoid disorders
3 Antiallergics and medicines used in anaphylaxis 7
4 Antidotes and other substances used in poisonings 14
5 Anticonvulsants/ Antiepileptics 9
6.1 Anthelminthics 4
6.2 Anti-bacterial medicines 22
6.2.3 Antileprosy medicines 3
6.2.4 Antituberculosis medicines 14
6.3 Anti-fungal medicines 5
6.4 Antiviral medicines 23
6.5 Antiprotozoal medicines 15
7 Antimigraine medicines 5
8 Antineoplastic, immunosuppressives and medicines used in
palliative care 59
9 Antiparkinsonism medicines 2
10 Medicines affecting blood 13
11 Blood products and plasma substitutes 8
12 Cardiovascular medicines 30
13 Medicines used in dementia 1
14 Dermatological medicines 15
15 Diagnostic agents 7
16 Dialysis solution 2
17 Disinfectants and antiseptics 9
18 Diuretics 4
19 Ear, nose, throat medicines 4
20 Gastrointestinal medicines 16
21 Hormones, other endocrine medicines and contraceptives 23
22 Immunologicals 17
23 Muscle relaxants and cholinesterase inhibitors 5
24 Medicines used in neonatal care 3
Contd.
Pharmacotherapeutics
Table 1.2: National List of Medicines 2015 (Contd.)
Section Therapeutic category Total number of
preparations
25 Ophthalmological medicines 17
26 Oxytocics and antioxytocics 7
27 Psychotherapeutics 13
28 Medicines acting on the respiratory tract 6
29 Solutions correcting water, electrolyte and acid-base disturbances 8
30 Vitamins and Minerals 9
Source:
https://cdsco.gov.in
17
Standard Treatment Guidelines (STGs)
According to WHO, Standard Treatment Guidelines (STGs) are systematically
developed statements to help practitioners and patients make decisions about
appropriate health care for specific clinical circumstances.
The Drug and Therapeutics Committee (DTC) is responsible for a number of
important pharmaceutical management functions. The committee is responsible for
evaluating new medicines for the formulary, identifying and correcting medication
use problems, and assessing and controlling adverse drug reactions among other
functions.
STGs are useful in the management of pharmaceutical therapy because:
• There could be many approaches to the treatment of diseases.
• Many practitioners may forget the optimal method of treatment.
• Both the patient and the health care system will benefit from the most effective treatment.
The development and implementation of STGs is a necessary task in a health care
system where a variety of treatment approaches may be available. Physicians and
nonphysician providers will apply their own knowledge, expertise, and preconceived
ideas to the treatment rationale for each patient. This approach is frequently successful
and reasonable, resulting in optimal care. However, it is also possible that it may result
in less than optimal care, and in fact, it may result in dangerous medical care, resulting
in poor patient outcomes. The use of STGs is a time-tested method that improves
patient outcomes.
STGs have existed for a long time. Traditional healers developed their own standard
sets of conventional remedies that were passed down from generation to generation.
In modern medicine, however, the concept of different treatment options has arisen
for many medical conditions. This led to confusion and, in many cases, inappropriate
treatment. Doctors, nurses, pharmacists, community health workers, and other health
care providers study all of the treatments that could be used, instead of focusing on
the best therapy that should be used. It has been observed that there is a tremendous
diversity among prescribers in the treatment of even simple medical conditions.
Polypharmacy is one issue; for example, three, four, five, six, and sometimes more
medicines may be prescribed for acute viral gastroenteritis, for which only oral
rehydration therapy is effective in reducing morbidity and mortality. Other common