Cardiac Cycle - Systole
- AV Node
- AV Node Conducts Signal to Bundle of His
- Bundle of His Signals Purkinje Fibers to Contract Ventricles
- Tricuspid Valve Closes
- Pulmonary Valve Opens
- Mitral Valve Closes
- Aortic Valve Opens
Cardiac Cycle - Diastole
- Aortic Valve Closes
- Pulmonary Valve Closes
- Ventricles Relax
- Mitral Valve Opens
- Tricuspid Valve Opens
- Ventricles Fill
- Sinoatrial (SA) Node Fires
- Atrial Contraction
Vital Signs - Adult
- Temperature (96.8-100.4 Degrees F) (36-38 Degrees C)
- Rectal
- Tympanic
- Oral
- Axillary
- Temporal
- Respiration (12-20)
- Oxygen Saturation (95%-100%)
- Pulse (60-100)
- Blood Pressure (<120/80)
- Pain
Low Blood Pressure Response
- Posterior Pituitary Releases Vasopressin
- Vasoconstriction
- Adrenal Cortex Releases Aldosterone
- Increased Na+ and H2O Reabsorption
High Blood Pressure Response
- Atria Release Atrial Natriuretic Peptide
- Vasodilation
- Antagonizes Aldosterone
- Na+ and Water Excreted
Troponin Lab Values
- Troponin T (cTnT)
- < 0.1 ng/mL Normal
- Troponin I (cTnI)
- < 0.5 ng/mL Normal
- > 2.3 ng/mL Myocardial Injury
Cardiac Enzyme Evaluation: Creatine Kinase CK-MB
- Skeletal or Cardiac Muscle Injury
- Onset: 4-8 Hours
- Peak: 12-24 Hours
- Return to Normal: 2-3 Days
Cardiac Enzyme Evaluation: Myoglobin
- Skeletal or Cardiac Muscle Injury
- Onset: 1 - 4 Hours
- Peak: 12 Hours
- Return to Normal: 24 Hours
- Elevation After 24 Hours: Reinfarction
Red Blood Cell Count (RBC) Lab Values
- Women: 3.5-5.5 million cells/ MuL
- Men: 4.3-5.9 million cells/ MuL
WBC Differential Lab Value
- White Blood Cells (WBC)
- 5-10 (5,000-10,000)
- Neutrophils (50%-70%)
- Bands (2%-5%)
- Segs (50%-70%)
- Lymphocytes (20%-40%)
- Monocytes (4%-8%)
- Eosinophils (2%-4%)
- Basophils (0.5%-1.5%)
Hematocrit (Hct) Lab Values
- Women: 36% - 46%
- Men: 41% - 53%
Hemoglobin (Hgb) Lab Values
- Men: 13 - 17 g/dL
- Women: 12 - 16 g/dL
Clotting Overview
- Endothelial Cells are Damaged
- Platelets Respond to Exposed Collagen and Stick
- Platelets Release Recruiting Factors
- More Platelets are Attracted
- Soluble Fibrinogen Turns to Insoluble Fibrin
- Fibrin Seals the Clot
- Clot Dissolves
- Liver Produces Clotting Factors
Cholesterol Lab Values
- LDL (Low Density Cholesterol)
- < 100 mg/dL
- HDL (High Density Cholesterol)
- > 40 mg/dL Males
- > 50 mg/dL Females
- Total Cholesterol
- < 200 mg/dL
Hypokalemia
- < 3.5 mEq/L
- Muscle Weakness
- Arrhythmia
- U Wave
- Ileus
- Hyporeflexia
- IV K+ Infusion at 5-10 mEq/hr
- Give Orally with Food
- Monitor Respiratory Status
Hyperkalemia
- > 5.0 mEq/L K+
- Abdominal Cramps
- Muscle Weakness
- Diarrhea
- Arrhythmia
- Tall, Peaked T Waves
- IV Calcium
- Infusion of Glucose and Insulin
- Loop or Thiazide Diuretics
- Kayexalate
- Dialysis
- Prevention Education
Hyponatremia
- < 135 mEq Na+
- Nausea and Vomiting
- Decreased LOC
- Confusion / Lethargy
- Seizures
- Assess Airway
- Reduce Diuretic Dosage
- Mannitol (Osmitrol)
- Fluid Restriction
- Hypertonic Solution (3% or 5% NaCl)
Hypernatremia
- > 145 mEq/L Na+
- Change in LOC
- Extreme Thirst
- Orthostatic Hypotension
- Dry Flushed Skin
- Muscle Twitching
- Seizures
- Treat and Prevent Dehydration
- Hypotonic Solutions (0.225% or 0.45% NaCl)
- Sodium Restriction
- Diuretics
Hypocalcemia
- Muscle Spasms
- < 8.5 mg/dL Ca2+
- Decreased Bone Density
- Tetany
- Chvostek's Sign
- Trousseau's Sign
- Increased DTR
- ECG Changes
- QT Prolongation
- Oral and IV Replacement of Ca2+
- Seizure Precautions
Hypercalcemia
- > 10.5 mg/dL Ca2+
- Pathologic Fractures
- Lethargy
- Hypercoagulation
- Constipation
- ECG Changes
- QT Shortening
- No Calcium Intake
- Chelating Drugs
- Calcitonin
- Bisphosphonates
- Loop Diuretics instead of Thiazide Diuretics
- Increased Risk for Renal Calculi
- Increase Fluids
Magnesium (Mg2+) Lab Value
Hypomagnesemia
- Confusion
- Increased Deep Tendon Reflexes (DTRs)
- Neuromuscular Irritability
- Seizures
- Muscle Cramps
- Tremors
- Insomnia
- Tachycardia
- Magnesium Sulfate
- Foods High in Magnesium
Hypermagnesemia
- Flushing
- Lethargy
- Muscle Weakness
- Decreased Deep Tendon Reflexes (DTRs)
- Decreased Respirations
- Bradycardia
- Hypotension
- Dialysis
- IV Calcium Gluconate
- Diuretics
- Avoid Antacids and Laxatives containing Mg2+
BUN (Blood Urea Nitrogen) Lab Values
Magnetic Resonance Imaging (MRI)
- Internal Body Images
- Detects Variations of Soft Tissues
- No Metal Objects
- No Pacemakers
- Contrast is Non-Iodine
- Safe During Pregnancy
- Long Procedure
- Antianxiety Medications
Cardiac Catheterization
- Fluttering Sensation
- Contrast Media
- NPO 6-12 Hours
- Bed Rest
- Assess Circulation
- Assess for Bleeding
- Monitor Vital Signs
Stable Angina
- Chest Pain with Exertion
- Relieved within 15 Minutes
- ST Depression
- Nitroglycerin
- Up to 3 Doses q 5 Minutes
- Rest
- Antiplatelet Medication
- CABG
- Angioplasty
Unstable Angina
- Chest Pain with Rest or Exertion
- Limits ADLs
- > 15 Minutes
- Less Likely Relieved by Nitroglycerin
- ST Depression
- Fatigue
- Acute Coronary Syndrome (ACS) Treatment
- Emergency Treatment
Coronary Artery Bypass Grafting (CABG)
- ST-Segment Elevation Myocardial Infarction (STEMI)
- Cardiovascular Disease (CAD)
- Uncontrolled Angina
- Internal Mammary Artery
- Saphenous (Leg) Vein
- Transient Limb Edema
- Closely Monitor Patients
- Venous Thromboembolism (VTE) Prophylaxis
- Incentive Spirometer
Parts of an ECG
- P Wave
- Atrial Depolarization
- QRS Complex
- Ventricular Depolarization
- T Wave
- Ventricular Repolarization
ECG Interpretation
- Rate
- Rhythm
- P Waves
- Upright, Rounded, Before Every QRS
- PR Interval (< 0.20 seconds)
- Normal QRS (< 0.12 seconds)
ECG: Sinus Bradycardia
- < 60 bpm
- Regular
- Present, Upright, Every QRS
- < 0.20 seconds
- < 0.12 seconds
- Atropine
ECG: Sinus Tachycardia
- > 100 bpm
- Regular
- Present, Upright, Every QRS
- < 0.20 seconds
- < 0.12 seconds
- Treat Underlying Cause
ECG: Atrial Fibrillation
- Variable Rate
- Irregular Rhythm
- No P Wave
- No PR Interval
- QRS < 0.12 Seconds
ECG: Atrial Flutter
- Variable
- Regular or Irregular
- Saw Tooth, Multiple Before Every QRS
- Non-measurable
- < 0.12 seconds
Cardiopulmonary Resuscitation (CPR) for Adults
- Scan Scene
- Activate Emergency Response System
- Check For Breathing (Max 10 Seconds)
- Open Airway
- Compressions: 2 Inches Deep (100-120 Compressions/Min)
- Airway: Ensure Airway is Still Open
- Breathing: Administer 2 Rescue Breaths
- Repeat C-A-B Sequence (30:2) Until Help Arrives
Atrioventricular Block Types
- First Degree
- PR Interval > 200ms
- No Treatment Needed
- Second Degree
- Mobitz I (Wenckebach)
- Progressive PR Interval Lengthening with Nonconducted QRS Complex
- Mobitz II
- Constant PR Interval with Nonconducted QRS Complex
- Third Degree
- Atrioventricular Dissociation
Types of Heart Failure
- Left Sided
- Pulmonary Congestion
- Right Sided
- Peripheral Edema
- High Output
- Unable to Meet Metabolic Needs
Heart Failure Interventions
- Echocardiogram
- Invasive Hemodynamic Monitoring
- High Fowler's Position
- Oxygen
- Advanced Airway
- Diuretics
- Beta Blockers
- Angiotensin II Receptor Blockers (ARBs)
- ACE Inhibitors
- Digoxin (Lanoxin)
- Pacemaker
Right Heart Failure Assessment
- Jugular Venous Distention (JVD)
- Peripheral Edema
- Hepatosplenomegaly
- Nocturia
- Weight Gain
- Ascites
- Fatigue
Left Heart Failure Assessment
- Pulmonary Congestion
- Pink Frothy Sputum
- Wheezing or Crackles
- Dyspnea with Exertion
- Cough
- Fatigue
- Tachycardia
- Weak Peripheral Pulse
- S3, S4 Heart Sounds
Myocardial Infarction Diagnosis
- 12 Lead ECG
- ST Elevation
- Q Wave
- T Wave Inversion
- Troponin T and I
- CK-MB
- Early ECG
- Cardiac Stress Test
Myocardial Infarction Assessment
- Substernal Chest Pain
- Crushing or Dull Sensation
- Arm, Jaw, and Neck
- > 20 Minutes
- Unrelieved by Nitro
- Palpitations
- Diaphoresis
- Fear of Impending Doom
- Nausea and Vomiting
- Shortness of Breath
- Monitor for Arrhythmias
Myocardial Infarction Interventions
- Morphine
- Oxygen
- Nitrates
- Aspirin
- Thrombolytics (tPA)
- Cardiac Catheterization
- Stent Placement
- Angioplasty
- Coronary Artery Bypass Grafting (CABG)
- Decrease Modifiable Risk Factors
- Resuming Activity (Physical, Sexual)
Acute Pericarditis Assessment
- Pericardial Sac Inflammation
- Sharp Chest Pain
- Increased with Inspiration
- Pain Decreased by Leaning Forward
- Pericardial Friction Rub
- Diffuse ST-Elevation
- T Wave Inversion
- Fever
- May Be Asymptomatic
- Cardiac Tamponade
Acute Pericarditis Interventions
- Treat Underlying Disorder
- Antibiotics
- Colchicine + NSAIDs
- Corticosteroids
- Place Patient Upright with Head of Bed at 45°
- Pericardiocentesis
- Pericardial Window
Endocarditis Assessment
- Infection of Inner Layer and Valves
- Fever
- Fatigue
- New or Changed Murmurs
- Roth's Spots
- Splinter Hemorrhages
- Janeway Lesions
- Osler's Nodes
- Heart Failure
- Embolization
Endocarditis Interventions
- IV Antibiotics
- 4-6 Weeks
- Anticoagulants
- Good Hygiene
- Closely Monitor
- Antibiotic Prophylaxis
- Dental Procedures
- Invasive Procedures
Hypertrophic Cardiomyopathy Signs, Symptoms and Treatment
- Sudden Death Of Young Athlete
- Heart Failure
- Angina
- Arrhythmias
- Syncope
- Harsh Systolic Ejection Murmur
- S4 Heart Sound
- Beta Blocker
- Non-dihydropyridine Calcium Channel Blocker
Venous Thromboembolism (DVT) Assessment
- Venous Wall Inflammation caused by Thrombus
- Tenderness
- Edema
- Warmth
- Asymmetry
- Could be Asymptomatic
- Monitor for Pulmonary Embolism
Venous Thromboembolism (DVT) Interventions
- Anticoagulants
- Prevention Education
- Frequent Ambulation
- Leg Exercises
- Compression Stockings or SCD's
- Avoid Nicotine and Oral Contraceptives
- Surgery
Superficial Thrombophlebitis
- IV Catheter Irritation
- Erythema
- Cord-like Vein
- Edema
- Remove IV Catheter
- Elevate
- Warm Compress
- Rotate Sites Q3 Days
- Aseptic Technique
Pulmonary Embolism Assessment
- Shortness of Breath (SOB)
- Pleuritic Chest Pain
- Tachypnea
- Hemoptysis
- Hypoxemia
- Sudden Death
Pulmonary Embolism Causes
- FAT BAT Mnemonic
- Fat
- Air
- Deep Vein Thrombosis (DVT)
- Bacteria
- Amniotic Fluid
- Tumor
- Hypercoagulable
- Central Venous Lines
- Immobilized
Chronic Venous Insufficiency (Venous Stasis Ulcer) Assessment
- Venous Stasis Ulcer
- Uneven Edges
- Dull Persistent Pain
- Medial Malleolus
- Necrotic
- Normal Pulses
- Lower Leg Edema
- Bronze-Brown Pigmentation
- Warm
- Pruritus
Chronic Venous Insufficiency (Venous Stasis Ulcer) Interventions
- Frequently Elevate Legs
- Avoid Standing/Sitting for Long Periods of Time
- Elastic Compression Stockings
- Bilayer Artificial Skin
- Daflon
- Wound Dressings
- Proper Foot and Leg Care
Varicose Veins Assessment
- Increased Venous Pressure
- Incompetent Valves
- Telangiectasias
- Small Reticular Veins
- Dilated and Tortuous Veins
Varicose Veins Interventions
- Laser Therapy
- Sclerotherapy
- Removal of Saphenous Vein
- Avoid Prolonged Standing
- Elastic Compression Stockings
Peripheral Artery Disease (PAD)
- Atherosclerosis
- Intermittent Claudication
- Pain with Exercise
- Paresthesias
- Arterial Ulcers
- Critical Limb Ischemia
- Amputation
- Ankle-Brachial Index (ABI)
Abdominal Aortic Aneurysm (AAA) Assessment
- Atherosclerosis
- Bruit
- Pulsation in Abdomen
- Abdominal or Lower Back Pain
- Tearing Pain
- Ultrasound
- Rupture
- Shock
- Surgical Repair
Hypertension Assessment
- Essential Hypertension
- Secondary Hypertension
- Headache
- Vision Changes
- Nosebleed (Epistaxis)
- Chest Pain
- Syncope (Fainting)
- Average 2 Sets, 2 Minutes Apart
- After 2 or More Visits (within 1-4 weeks)
- Take BP Both Arms
- Common in African Americans
Hypertension Intervention
- Weight Reduction and Exercise
- Diet Changes
- Relaxation Techniques
- Smoking Cessation
- Medications
- Encourage Self Monitoring