Hypertension | Clinical Medicine

Comments · 318

• DO

  @DoggieBreath · 2 years ago

  As a retired teacher who went to medical school when your parents were kids, I want to tell you how impressed I am with your videos.

  285

• AN

  @anirudhsinhrajput777 · 2 years ago

  King of medicine is back after 8 months ....❤

  107

• ZA

  @zainab.thinks29 · 2 years ago

  i am grateful to be living in an era where i am able to access these videos and learn from such a genius and a great person . Thank you !!!

  125

• AN

  @annakern190 · 2 years ago

  Who knows how many people you helped to become good medworkers and, in return, how many lives they saved . God Bless you.

  33

• NI

  @nigelnyoni8265 · 1 year ago (edited)

  1. Definition of Hypertension: Hypertension is defined as a persistent elevation in systemic arterial blood pressure. According to the American Heart Association (AHA) guidelines, blood pressure (BP) categories are classified as:<br><br>Normal: Systolic BP &lt;120 mmHg and diastolic BP &lt;80 mmHg<br><br>Elevated: Systolic BP 120–129 mmHg and diastolic BP &lt;80 mmHg<br><br>Hypertension Stage 1: Systolic BP 130–139 mmHg or diastolic BP 80–89 mmHg<br><br>Hypertension Stage 2: Systolic BP ≥140 mmHg or diastolic BP ≥90 mmHg<br><br><br>2. Types of Hypertension:<br><br>Essential (Primary) Hypertension: Accounts for approximately 90–95% of cases and has no identifiable secondary cause. It is often associated with genetic predisposition, lifestyle factors (e.g., high sodium intake, obesity, physical inactivity), and environmental influences.<br><br>Secondary Hypertension: Represents about 5–10% of cases and results from identifiable underlying conditions, such as:<br><br>Renal Parenchymal Diseases: Chronic kidney disease leading to sodium and fluid retention.<br><br>Renovascular Hypertension: Stenosis of renal arteries causing activation of the renin-angiotensin-aldosterone system (RAAS).<br><br>Endocrine Disorders: Conditions like primary hyperaldosteronism (Conn&apos;s syndrome), pheochromocytoma, Cushing&apos;s syndrome, and hyperthyroidism.<br><br>Medications: Use of oral contraceptives, nonsteroidal anti-inflammatory drugs (NSAIDs), corticosteroids, and certain antidepressants.<br><br><br><br>3. Pathophysiology:<br><br>Genetic Factors: Polymorphisms in genes regulating the RAAS, sympathetic nervous system, and renal sodium handling.<br><br>Neurohormonal Dysregulation: Overactivity of the sympathetic nervous system and RAAS leads to vasoconstriction, increased cardiac output, and sodium retention.<br><br>Vascular Remodeling: Chronic hypertension causes structural changes in the arterial wall, including hypertrophy of the tunica media and increased extracellular matrix deposition, leading to reduced arterial compliance.<br><br><br>4. Clinical Manifestations:<br><br>Often asymptomatic, earning the moniker &quot;silent killer.&quot;<br><br>When symptoms occur, they may include headaches, dizziness, palpitations, and epistaxis.<br><br><br>5. Complications of Untreated Hypertension:<br><br>Cardiovascular: Left ventricular hypertrophy, heart failure, myocardial infarction, and increased risk of sudden cardiac death.<br><br>Cerebrovascular: Ischemic and hemorrhagic stroke, transient ischemic attacks.<br><br>Renal: Chronic kidney disease progressing to end-stage renal disease.<br><br>Ophthalmologic: Hypertensive retinopathy, which can lead to vision loss.<br><br><br>6. Hypertensive Crisis:<br><br>Hypertensive Urgency: Severe elevation in BP (e.g., &gt;180/120 mmHg) without evidence of acute target-organ damage.<br><br>Hypertensive Emergency: Severe elevation in BP with evidence of acute target-organ damage (e.g., encephalopathy, myocardial infarction, pulmonary edema).<br><br><br>7. Diagnostic Evaluation:<br><br>History and Physical Examination: Assess for risk factors, symptoms of secondary causes, and target-organ damage.<br><br>Laboratory Tests: Complete blood count, serum electrolytes, renal function tests, fasting glucose, lipid profile, and urinalysis.<br><br>Imaging Studies: Electrocardiogram (ECG) to detect left ventricular hypertrophy; echocardiography if indicated.<br><br>Secondary Hypertension Workup: Based on clinical suspicion, tests may include renal ultrasound, plasma aldosterone-renin ratio, 24-hour urinary metanephrines, and thyroid function tests.<br><br><br>8. Management:<br><br>Lifestyle Modifications:<br><br>Dietary Approaches to Stop Hypertension (DASH) Diet: Rich in fruits, vegetables, whole grains, and low-fat dairy products; reduced saturated fat and cholesterol.<br><br>Sodium Reduction: Limit intake to &lt;2.3 grams per day.<br><br>Physical Activity: Engage in regular aerobic exercise (e.g., 30 minutes most days of the week).<br><br>Weight Management: Achieve and maintain a healthy body weight (BMI 18.5–24.9 kg/m²).<br><br>Alcohol Moderation: Limit to ≤2 drinks per day for men and ≤1 drink per day for women.<br><br><br>Pharmacologic Therapy:<br><br>First-Line Agents:<br><br>Thiazide Diuretics: e.g., hydrochlorothiazide; decrease blood volume and vascular resistance.<br><br>Angiotensin-Converting Enzyme (ACE) Inhibitors: e.g., lisinopril; inhibit conversion of angiotensin I to angiotensin II.<br><br>Angiotensin II Receptor Blockers (ARBs): e.g., losartan; block angiotensin II receptors.<br><br>Calcium Channel Blockers: e.g., amlodipine; inhibit calcium influx into vascular smooth muscle.<br><br><br>Second-Line Agents:<br><br>Beta-Blockers: e.g., metoprolol; reduce heart rate and cardiac output.<br><br>Aldosterone Antagonists: e.g., spironolactone; inhibit aldosterone effects.

  237

• 3.

  @3.0minutetipsandtricks.33 · 2 years ago

  My boss. I salute u. One day I will meet with u it is my dream and goal. Pray for me boss

  19

• SE

  @selzoo2270 · 2 years ago

  Sir please do all clinical &nbsp;medicine videos, medicine is easy only with you

  31

• SI

  @siobhanquinn4635 · 2 years ago

  I’d love to support you and your team in every way I can !!!! Go ninja nerds !!

  22

• M_

  @M_dark21 · 2 years ago

  This is my 5th year as a medical student next year will be my last before graduation and since the first year, I don&apos;t know what would happen if I didn&apos;t see your channel, super way to teach with passion. thank you ninja thank you a lot

  27

• D박

  @D박예지 · 6 months ago

  I’m South Korean, and I’m lucky I started clinical medicine this year after you posted these. Don’t know how I’d study without you. Lots of kids out school benefit from your video. Thank you so much❤

  6

• RO

  @RowenaAnolin-h4l · 2 years ago

  You guys are a big help in my studies…. Great job guys…

  49

• MA

  @magedabdullah7225 · 2 years ago

  We miss you dr <br>Welcome back ❤

  7