Potpourri Flashcards
Define Hypertension
BP >140/90
Define Isolated Systolic Hypertension
Systolic BP >140 & diastolic BP less than 90
Associated Conditions with HTN
MI CVA PVD CHF Renal failure
CV Disease Risks
Continuous & consistent HTN & independent of other risks
Each 20/10 mmHg rise doubles risk of CVD
Benefits of Lowering BP
Decreased risk of stroke, MI, & HF
Define Dementia
Cognitive impairment more common with HTN
Accurately Measuring BP
Cuff size
Correct inflation
Appropriate interval
Several readings
Possible Reasons for Secondary HTN
Sleep apnea Drug-induced Chronic kidney disease Primary aldosteronism Reno vascular disease Chronic steroid therapy or Cushing's syndrome Pheochromocytoma Coarctation of the aorta Thyroid or parathyroid disease
CVD Risk Factors
HTN Cigarette smoking Dyslipidemia Obesity Physical inactivity DM Microalbuminuria or GFR less than 60 mL/min Age: 55+ for men, 65+ fro women Family Hx of premature CVD (men less than 55 or women less than 65)
Target Organ Damage
Heart: LVH, angina, prior MI, prior coronary revascularization, CHF CVA/TIA Renal disease PAD Retinopathy
Aggressive BP Management
Weight loss
Sodium restriction
Treatment with all classes of drugs except hydrazine & minoxidil
Laboratory Tests for BP Issues
EKG UA CMP Fasting lipid panel H/H TSH Microalbumin
Lifestyle Modification for HTN
Weight reduction Adopt DASH eating plan Dietary sodium reduction Physical activity Moderation of alcohol consumption
Medication Classes for HTN with Heart Failure
Thiazides Beta-blocker ACEI ARB Aldosterone antagonists
Medication Classes for HTN with Status Post MI
Beta-blockers
ACEI
Aldosterone antagonists
Medications for HTN with High CAD Risk
Thiazides
Beta-blockers
ACEI
CCBs
Medications for HTN with DM
Thiazides Beta-blockers ACEI ARB CCB
Medications for HTN with Chronic Renal Disease
ACEI
ARB
Medications for HTN with Recurrent Stroke Prevention
Thiazides
ACEI
What medication class is good for gout, history of hyponatremia, & osteopenia/osteoporosis?
Thiazides
What medication class is good for RAD or 2nd/3rd degree heart block, atrial tachycardia, migraines, thyrotoxicosis, essential tremor, or in the perioperative period?
Beta-blockers
What medication class is useful in Raynaud’s Syndrome?
CCBs
What medication class is useful in BPH?
Alpha blockers
What medication classes have a risk of pregnancy?
ACEI
ARBs
What medication classes are good for hyperkalemia?
Aldosterone antagonists
K-sparing diuretics
Define Orthostatic Hypotension
Drop in standing SBP >10 mmHg
When should you always check orthostatic BP?
When adjusting meds
Differential Diagnosis of Marked BP Elevations & Acute Target Organ Damage
Encephalopaty TIA/CVA Papilledema MI or unstable angina Pulmonary edema Life-threatening arterial bleeding or aortic dissection Renal failure
Define Hypertensive Emergency
Marked BP elevations & acute target organ damage
Define Hypertensive Urgency
Market BP elevation but NO acute target organ damage
Define Pseudohypertention
When BP readings may be falsely elevated in some elderly patients with very stiff, calcified arteries
Treatment of HTN Reduces Incidence of
MI
Stroke
HF
What should you evaluate for with HTN in the elderly?
Target organ damage
Other CV risk factors
What is the 3rd leading cause of death & disability in the developed world?
CVA
Complications of Strokes
Venous thromboembolism
MI during acute period
MI or CVA first?
Major Risk Factors
HTN Smoking Atrial fibrillation MI Hyperlipidemia DM CHF Acute ETOH abuse TIA with >70% occlusion of carotid arteries OCP + smoking Hypercoagulopathy High RBC count & hemoglobinopathy Age, gender, race, prior stroke, & heredity
2 Types of Stroke
Ischemic
Hemorrhagic
Define TIA
Brief episodes of focal neurological deficits lasting 2-3 minutes to at most a few hours but less than 24 hours with no residual deficits with complete functional recovery
TIA Warning Sign of What
Impending stroke
Define Completed Stroke
Acute, sustained functional neurological deficit lasting from days to permanent
Stroke Syndromes
Internal carotid artery (ICA) occlusion ACA occlusion MCA occlusion PCA occlusion Vertebrobasilar occlusion Lacunar infarct Spinal stroke
Anterior Circulation TIA’s & Stroke
Anterior or middle cerebral artery
Amaurosis fugax (monocular blindness)
Face-hand-arm-leg contralateral hemiparesis
Aphasia/dysarthria
MCA Occlusion
Contralateral hemiplegia in face-arm-hand
Dominant hemisphere = aphasia
Non-dominant right hemisphere = confusion, spatial disorientation, sensory & emotional neglect
ACA Occlusion
Sensorimotor deficit in contralateral foot & leg
Brocas or anterior conduction aphasia in dominant hemisphere
TIA’s rarely affect ACA distribution
Posterior Circulation TIA & Stroke
Vertigo Diplopia/dysconjugate gaze, ocular palsy homonymous hemianopsia Sensorimotor deficits Dyarthria Ataxia
Vertebro-Basilar Posterior Circulation Occlusion
VA-PICA syndrome Horner's syndrome PICA-AICA-SCA acute cerebellar infarction BA V-B junction Basilar apex PCA quadrantic or homonymmous hemianopsia PCA thalamus involvement
VA-PICA Syndrome
Headache
Ataxia
N/V
Ipsilateral paralysis in tongue & swallowing
Ipsilateral face & contralateral body
V-B Junction
Lower extremity paraplegia or tetraplegia Conjugate or dysconjugate gaze paralysis Constricted pupils Respiratory depression Coma
Basilar Apex
PCA junction results in hemiplegia-diplegia Pupillary & occulomotor paralysis Visual field defects Stupor Coma
PCA (proximal branches) Thalamus Involvement
Memory loss
Sensorimotor hemiplegias
Spinal Stroke
Prolonged hypotension
Intraspinal mass lesions
Define Lacunar Infarct
Small, deep infarcts caused by occlusion of the small arteries that penetrate deeper brain structures
Types of Hemorrhagic Stroke
Subarachnoid hemorrhage
Intracerebral hemorrhage
Presentation of Hemorrhagic Stroke
Headache
N/V
Decreased consciousness
Types of Intracerebral Hemorrhage
Hypertensive atherosclerotic hemorrhage Lobar hemorrhages Hemorrhage from vascular malformations Bleeding into brain tumors (uncommon) Blood dyscrasias or anticoagulants (uncommon) Inflammatory vasculopathies (uncommon)
Define Subarachnoid Hemorrhage
Rupture of an artery with bleeding onto the surface of the brain
Causes of Subarachnoid Hemorrhage
Aneurysm
AVM
Bleeding disorder due to anticoagulants
Describe Subarachnoid Hemorrhage
Worst headache ever Radiates to face & neck Phonophobia Photophobia Maximal intensity immediately after onset
Subarachnoid Hemorrhage Physical Signs
Nuchal rigidity Altered mental status Poor sign if with transient loss of consciousness (seizure, cardiac dysrhythmia) Papilledema May not have neurological defect
Define Intracerebral Hemorrhage
Rupture of an artery with bleeding into the brain parenchyma
1 Cause of Intracerebral Hemorrhage
Hypertension
Amyloid angiopathy
Differential Diagnosis of Stroke
Focal seizures Glaucoma Benign vertigo or Menieres disease Cardiac syncope or syncope from other causes Migraine HA Intracranial neoplasm Subdural hematoma Epidural hematoma Hyperglycemia Hypoglycemia Postcardiac arrest ischemia Drug overdose Meningitis, encephalitis Trauma Anoxic encephalopathy Hypertensive encephalopathy
Diagnosis of Stroke
ABCs H&P EKG, monitor, pulse oximetry Labs: CBC, electrolyte, glucose, ABG, PT/PTT, Urine drug screen, LP CT or MR head scan Echo, EEG Carotid duplex ultrasonogrpahy MRA or angiography
Management of Acute Stroke
Medical management
Surgical management
Prognosis
Medical Management
Prevention, lifestyle modification
Early recognition with rapid transport/pre-arrival notification
ABCs, O2, IV
Rapid evaluation for TPA