L: Hypertension Flashcards
High blood pressure
Hypertension
It is not a disease but an important risk factor for cardiovascular complications
Hypertension
It can be defined as a condition where blood pressure is elevated to an extent where clinical benefit is obtained from blood pressure
Hypertension
Blood Pressure Categories:
Normal
< 120mmHg Systolic and < 80mmHg Diastolic
Blood Pressure Categories:
Elevated
120-129mmHg Systolic and < 80mmHg Diastolic
Blood Pressure Categories:
HBP/HTN Stage 1
130-139mmHg Systolic or 80-89mmHg Diastolic
Blood Pressure Categories:
HBP/HTN Stage 2
140mmHg Systolic or higher or 90mmgHg Diastolic or higher
Blood Pressure Categories:
HTNS Crisis
Higher than 180 and/or Higher than 120
What are the Categories of Blood Pressure
Normal
Elevated
HBP/HTN Stage 1
HBP/HTN Stage 2
HTNS Crisis
Hypertension Complications
- Myocardial infarction
- Stroke
- Hypertensive encephalopathy / malignant hypertension
- Dissecting aortic aneurysm
- Hypertensive nephrosclerosis
- Peripheral vascular disease
Causes of Hypertension
Primary hypertension
- 90-95%
- Essential hypertension
- Etiology is unknown
- Genetic factors clearly play a part
Causes of Hypertension
Secondary hypertension
- 5-10%
- Renal disease
- Endocrine disease
- Vascular causes
- Drugs (sympathomimetic amines, estrogens, cyclosporine, erythropoietin, NSAIDS, steroids)
Categories of Causes in Hypertension
Primary hypertension
Secondary hypertension
Formula for Blood Pressure
BP = CO ✕ TPR
CO stands for
Cardiac Output
TPR stands for
Total Peripheral Resistance
In hypertensive individuals, cardiac output is ____
not increased
In hypertensive individuals, high blood pressure arises as a result of _____ caused by constriction of small arterioles
increased total peripheral resistance
In hypertensive individuals, high blood pressure arises as a result of increased total peripheral resistance caused by ____
constriction of small arterioles
The mean blood pressure is the product of
cardiac output and total peripheral resistance
Blood pressure is measured using a
Sphygmomanometer
a device composed of an inflatable cuff to restrict the blood flow, and a mercury or mechanical manometer to measure the pressure
Sphygmomanometer
Blood Pressure is measured by
Sphygmomanometer
Manual (Mercury & Aneroid)
Digital
Hypertension itself causes ___
no symptoms
What is a present symptom in HTN
Headache
It is usually unclear if this is caused by hypertension or is an incidental finding
Headache
Hypertension may also come to light for first time when the individual suffers a
hypertension-related complication
hypertension-related complication example
myocardial infarction or stroke.
Contributing factors in HTN
- Obesity
- Excess alcohol
- Salt intake
- Lack of exercise
Other risks in HTN
- Smoking
- Diabetes
- Hyperlipidemia
It is a clinical situation in which blood pressure is very high with minimal or no symptoms, and NO signs or symptoms indicating acute organ damage
Hypertensive urgency
Hypertensive emergency is also known as
Malignant hypertension or accelerated
A high blood pressure with potentially life-threatening symptoms and signs indicative of acute impairment of one or more organ systems
Hypertensive emergency
Hypertensive emergency is evident in the ___, where papilloedema, hemorrhages and/or exudates may be present
optic fundus
Medical emergency that requires hospital admission and rapid control of BP over ___ towards normal levels
12-24 hours
Fatal in the absence of treatment, with a __ survival of less than 20%
1-year
Fatal in the absence of treatment, with a 1-year survival of __
less than 20%
Diagnosis: Home or ambulatory blood pressure measurements is recommended to prevent
“white coat hypertension”
Non-Pharmacologic Approaches: Weight loss results in reduction in BP of about __ (for overweight patients)
2.5/1.5 mmHg per kg
Non-Pharmacologic Approaches: Diet high in fruit and vegetables, legumes and whole grain cereal improves
Cardiovascular risk
Non-Pharmacologic Approaches: Reduce salt intake (aim is __ daily sodium intake)
<100 mmol
Non-Pharmacologic Approaches: Regular dynamic exercise for at least __ on most days
30 minutes
AB/CD Algorithm by
Williams et al 2004
Initial choice of ACE inhibitor or angiotensin
receptor blocker and β blocker as first line
therapy in younger nonblack patients (<55
years)
Treatment A/B