NREMT Paramedic Cognitive Exam flashcards

Management of severe asthma exacerbation involves rapid administration of bronchodilators, oxygen, and systemic corticosteroids. Reassessment of clinical status and objective measures like PEFR is critical to guide further therapy, which may include additional bronchodilators, magnesium sulfate, or consideration of advanced airway.

• PEFR < 50% of personal best indicates severe exacerbation.
• Initial treatment: oxygen, inhaled SABA (albuterol), ipratropium, systemic steroids.
• Reassessment guides further treatment (repeat SABA, magnesium, intubation if respiratory arrest imminent).

Memory trick: Bronchodilate, reassess, then escalate or stabilize the stress.

An OPA is a curved device inserted into the oropharynx to prevent the tongue from obstructing the airway in unresponsive patients without a gag reflex. It lifts the tongue off the posterior wall of the pharynx, creating a patent airway.

• Indicated for unresponsive patients without a gag reflex.
• Contraindicated if patient has a gag reflex or oral trauma.
• Proper sizing is crucial (corner of mouth to angle of mandible or earlobe).
• Can be inserted rotated 180 degrees then flipped, or directly with tongue depressor.

Memory trick: Snoring means tongue, OPA's the key, then breathe free.

Administering oxygen to patients with Chronic Obstructive Pulmonary Disease (COPD) requires careful titration to avoid suppressing their hypoxic drive, which can lead to hypoventilation and CO2 retention. A Venturi mask is often preferred for its ability to deliver precise concentrations of oxygen.

• COPD patients may rely on hypoxic drive to breathe.
• Excessive oxygen can abolish hypoxic drive, leading to hypoventilation.
• Target SpO2 for COPD is typically 88-92%.

Memory trick: Venturi's Very Controlled Oxygen Flow

Impending respiratory failure in severe asthma is characterized by signs of exhaustion (diminished respiratory effort, drowsiness, altered mental status) despite aggressive medical therapy. This indicates a need for definitive airway management and mechanical ventilation.

• Key signs include decreasing respiratory rate, silent chest, and altered mental status.
• It's a critical point where non-invasive interventions are failing.
• Requires advanced airway management (e.g., intubation) to prevent respiratory arrest.

Memory trick: Asthma's Rapid Slide to Intubation

For pediatric patients in severe respiratory distress with significant hypoxemia, the goal is to deliver the highest possible oxygen concentration. A non-rebreather mask is the most effective device for this, followed by positive pressure ventilation if needed.

• Signs of severe respiratory distress: nasal flaring, grunting, retractions, lethargy, SpO2 < 90%.
• Non-rebreather mask provides FiO2 up to 90-100% at 10-15 L/min.
• Prioritize oxygenation over avoiding transient agitation in severe cases.

Memory trick: When the little one struggles hard, give max air, don't guard.

COPD exacerbation leading to respiratory failure requires aggressive ventilatory support and oxygenation, overriding concerns about hypoxic drive in the presence of severe hypoxemia and hypercapnia.

• Signs of respiratory failure: altered mental status, cyanosis, accessory muscle use, shallow/rapid respirations, severe hypoxemia.
• Prioritize oxygenation and ventilation over hypoxic drive concerns in acute failure.
• BVM ventilation provides both oxygen and ventilatory assistance.

Memory trick: Confused, blue, and shallow? Bag them through!

A chronic autoimmune disease that can affect various organs, characterized by inflammation and a wide range of symptoms, including a distinctive 'butterfly rash'.

• Malar rash (butterfly rash) is a classic sign.
• Causes fatigue, joint pain, and can affect kidneys, heart, lungs, and brain.
• Diagnosis is complex; treatment involves immunosuppressants.

Memory trick: LUPUS: 'L' for Lupus, 'U' for Unexplained symptoms, 'P' for Pain (joint), 'U' for Unusual rash ('U'nique butterfly), 'S' for Systemic.

Different methods of rewarming a hypothermic patient based on the severity of their core body temperature.

• Mild (90-95°F / 32-35°C): Passive external rewarming
• Moderate (82-90°F / 28-32°C): Passive external + active external (trunk only), warm IV fluids
• Severe (<82°F / <28°C): Active internal rewarming (e.g., warm IV fluids, lavage, ECMO)

Memory trick: Cold Patient, Warm Blankets, Slow Warm-up!

A pregnancy in which the fertilized egg implants outside the uterus, most commonly in the fallopian tube, posing a life-threatening risk if it ruptures.

• Classic triad: abdominal pain, amenorrhea, vaginal bleeding (though bleeding may be absent).
• Can cause severe, sudden unilateral lower abdominal pain.
• Rupture leads to internal hemorrhage and signs of hypovolemic shock.

Memory trick: PAIN, PERIOD, PREGNANT = ECTOPIC ALARM!

Emergency treatment for life-threatening organ dysfunction caused by a dysregulated host response to infection, characterized by persistent hypotension despite fluid resuscitation.

• Early recognition is crucial
• Rapid IV fluid resuscitation (30 mL/kg bolus)
• Prompt administration of broad-spectrum antibiotics

Memory trick: Fluids First, Bugs Next, Shock Stops!

Inhalant abuse (huffing) can cause rapid central nervous system depression, respiratory depression, and cardiac arrhythmias. The primary emergency management focuses on airway and ventilatory support.

• Can cause severe respiratory depression and cardiac sensitization.
• Rapid onset of effects.
• No specific antidote; management is supportive.
• Activated charcoal is ineffective.

Memory trick: Huffing leads to slow breathing; bag them fast!

Bleeding into the subarachnoid space, often caused by a ruptured aneurysm, leading to sudden severe headache and meningeal irritation.

• Often described as the 'worst headache of my life.'
• Can cause nuchal rigidity, photophobia, and altered mental status.
• High mortality and morbidity; requires rapid diagnosis and treatment.

Memory trick: SUDDEN THUNDER in the BRAIN means SAH!

Acetaminophen overdose is a common poisoning that can lead to severe hepatotoxicity. Management focuses on assessing the risk of liver damage using a nomogram and administering the antidote N-acetylcysteine.

• Patients can be asymptomatic initially.
• Serum acetaminophen level and time of ingestion are crucial.
• Rumack-Matthew nomogram guides NAC administration.
• NAC is the antidote for acetaminophen toxicity.

Memory trick: Tylenol overdose? Time and level matter most!

A surgical emergency where the spermatic cord twists, cutting off blood supply to the testicle, leading to acute pain and potential necrosis.

• Acute, sudden, severe unilateral testicular pain
• High-riding testicle, absent cremasteric reflex
• Time-sensitive: requires immediate surgical detorsion

Memory trick: Twisted Testicle, Time is Tissue, Speedy Transport!

Emergency care for severe, colicky pain caused by kidney stones, primarily focusing on pain relief and transport.

• Pain is often severe and radiating (flank to groin)
• Patients are typically restless, unable to find comfort
• Primary prehospital intervention is analgesia and transport

Memory trick: Painful Stone, Pain Reliever, Ride to Help!

A life-threatening condition where a fertilized egg implants outside the uterus, typically in the fallopian tube, and ruptures, causing severe internal bleeding.

• Sudden, severe unilateral lower abdominal pain
• Vaginal bleeding, missed period, positive pregnancy test
• Signs of hypovolemic shock (hypotension, tachycardia, dizziness)

Memory trick: Pain, Pregnancy, Pressure Drop: Bleeding Emergency!

Management of acetaminophen overdose focuses on preventing hepatotoxicity through gastric decontamination (if early) and administering the antidote N-acetylcysteine (NAC), which is most effective when given early.

• Symptoms often delayed 24-72 hours.
• Activated charcoal effective within 1-2 hours of ingestion.
• N-acetylcysteine (NAC) is the antidote, given orally or IV.
• Rapid transport for definitive care is crucial for all suspected overdoses.

Memory trick: Tylenol Time Bomb: Transport Quickly, Antidote Needed.

Strategies to increase core body temperature in hypothermic patients, varying based on severity and aiming to prevent complications like rewarming shock.

• Mild hypothermia (<95°F/35°C): Passive external rewarming.
• Moderate hypothermia (82-90°F/28-32°C): Active internal rewarming.
• Severe hypothermia (<82°F/28°C): Aggressive active internal rewarming and cardiac support.

Memory trick: COLD PATIENT: 'C'ore rewarming, 'O'xygen warm, 'L'iquids warm, 'D'on't move too much.

Acute stroke management focuses on rapid recognition of stroke symptoms, immediate assessment, and swift transport to a specialized stroke center for definitive treatment.

• Time is brain: every minute counts in stroke.
• Prehospital goal: rapid identification and transport.
• Avoid interventions that delay transport (e.g., extensive scene time).

Memory trick: FAST transport saves brains, don't delay!

Severe hypoglycemia in children (blood glucose <60 mg/dL) can lead to seizures and permanent brain damage, requiring immediate administration of glucose, preferably intravenously, especially if unresponsive.

• Unresponsive patients with absent gag reflex cannot receive oral glucose.
• IV dextrose is preferred for rapid and reliable glucose delivery.
• Glucagon is an alternative if IV access is difficult or delayed.

Memory trick: Low sugar, no gag? Dextrose STAT!

Testicular torsion is a surgical emergency caused by twisting of the spermatic cord, cutting off blood supply to the testicle. It presents with sudden, severe, unilateral testicular pain, swelling, and an elevated testicle.

• Sudden onset of severe, unilateral testicular pain.
• Elevated testicle, often with horizontal lie.
• Absent cremasteric reflex.
• Time-sensitive emergency: requires immediate surgery (detorsion).

Memory trick: Twisted Testicle: Time Is Short, Get Surgery Started.

A medical emergency where a fertilized egg implants outside the uterus, leading to rupture and life-threatening internal bleeding, requiring immediate surgical intervention and aggressive fluid resuscitation.

• Classic triad: abdominal pain, amenorrhea, vaginal bleeding.
• Signs of shock indicate rupture and significant hemorrhage.
• Immediate fluid resuscitation and rapid transport are critical.

Memory trick: Ectopic Rupture: Every Patient Needs Rapid Urgent Treatment.

Aortic dissection is a life-threatening condition where the inner layer of the aorta tears, allowing blood to surge between the layers, forcing them apart.

• Sudden, severe 'tearing' or 'ripping' pain.
• Pain often radiates to the back.
• May present with blood pressure or pulse deficits between limbs.

Memory trick: Tearing pain plus unequal pulses means run to the ER!

Acute cholecystitis is inflammation of the gallbladder, usually caused by gallstones obstructing the cystic duct, characterized by severe right upper quadrant pain, often radiating to the right shoulder, and triggered by fatty meals.

• RUQ pain, often radiating to right shoulder/scapula.
• Triggered or exacerbated by fatty meals.
• Nausea and vomiting are common.
• Murphy's sign (inspiratory arrest with RUQ palpation) is a key finding.

Memory trick: Fatty meal, RUQ pain? Gallbladder's to blame!

Prehospital care for an exacerbation of Systemic Lupus Erythematosus, focusing on supportive measures and transport when vital signs are stable.

• Recognize common symptoms (rash, joint pain, fatigue, weakness)
• Assess for life-threatening complications (e.g., renal failure, serositis, CNS involvement)
• Provide symptomatic relief and transport if stable

Memory trick: Lupus Symptoms, Stable Vitals, Hospital Next!

Aortic dissection is a life-threatening condition where the inner layer of the aorta tears, allowing blood to surge between layers. Key signs include sudden, severe tearing chest pain radiating to the back and a differential blood pressure between limbs.

• Sudden, severe, tearing chest pain, often radiating to back.
• Blood pressure differential (>20 mmHg) between arms is highly suggestive.
• History of hypertension is a major risk factor.
• Requires immediate surgical intervention.

Memory trick: Aorta's Anguish: Asymmetric Pressure, Ripping Pain, Often Hypertensive.

Inflammation of the meninges in infants, presenting with non-specific symptoms and often a bulging fontanelle due to increased intracranial pressure.

• Fever, irritability, and lethargy are common.
• Bulging fontanelle is a critical sign of increased ICP.
• Rapid diagnosis and treatment are essential to prevent severe neurological sequelae.

Memory trick: FEVER + FONTANELLE = MENINGITIS ALARM!

Treatment for low blood glucose in adults, primarily involving rapid administration of glucose, either orally for conscious patients or intravenously for unconscious patients.

• Blood glucose < 60-70 mg/dL is considered hypoglycemic.
• Unresponsive adults with IV access get 25g of Dextrose (e.g., 50 mL D50).
• If no IV access, 1 mg glucagon IM can be given.

Memory trick: D50 for the 'D-ead' sugar level, when they're down and out!

Formation of mineral deposits in the kidneys that can cause severe, colicky pain when they obstruct the ureter.

• Pain is typically sudden, severe, and radiates from flank to groin.
• Patients are often restless and unable to find a comfortable position.
• May be accompanied by nausea, vomiting, and hematuria (blood in urine).

Memory trick: FLANK-GROIN-NAUSEA-RESTLESS = KIDNEY STONE CRUSH!

Urinary tract infections in older adults often present atypically, with confusion, delirium, or general weakness rather than classic urinary symptoms.

• Acute mental status change is a common presenting symptom.
• Fever may be low-grade or absent.
• Can lead to sepsis if not treated promptly.

Memory trick: In the elderly, 'I CUPS' for confusion: Infection, Cardiac, Under-medication, Pain, Stroke.

Immediate and severe systemic allergic reaction requiring prompt administration of epinephrine to counteract widespread vasodilation and bronchoconstriction.

• Epinephrine is the primary treatment.
• Dosage for adults is 0.3-0.5 mg IM.
• Supportive care includes oxygen, IV fluids, and antihistamines/corticosteroids.

Memory trick: EPI-nephrine is your first 'EPI-c' choice for anaphylaxis!

Acute cholecystitis is inflammation of the gallbladder, usually due to gallstones obstructing the cystic duct. It classically presents with severe right upper quadrant pain, often radiating to the right shoulder, triggered by fatty meals.

• Right upper quadrant (RUQ) pain, often radiating to right shoulder/scapula.
• Pain often triggered by fatty foods.
• Associated with nausea and vomiting.
• Murphy's sign (inspiratory arrest on RUQ palpation) is a classic finding.

Memory trick: Gallbladder's Gripe: Greasy Food, Right Upper Pain, Radiates to Shoulder.

Sepsis in elderly patients often presents atypically with subtle signs like altered mental status, confusion, and generalized weakness, rather than classic fever and chills, making early recognition challenging.

• Altered mental status is a common early sign of sepsis in the elderly.
• Low-grade fever or even hypothermia can occur.
• Urinary tract infections are a common source of sepsis in this population.

Memory trick: Old, confused, and febrile? Think infection!

A life-threatening condition involving a tear in the inner layer of the aorta (dissection) or a full rupture, causing severe pain and rapid blood loss.

• Classic presentation: sudden, severe 'tearing' or 'ripping' pain in the chest, back, or abdomen.
• Often associated with hypertension.
• Can cause pulse deficits or signs of shock; high mortality.

Memory trick: TEARING BACK PAIN + HTN = AAA ATTACK!

A life-threatening condition caused by the body's overwhelming response to an infection, leading to organ dysfunction. In elderly patients, atypical presentations like altered mental status may be prominent.

• Often presents with subtle or atypical signs (e.g., confusion, weakness) in the elderly.
• Common sources of infection include urinary tract, pneumonia, skin.
• Early recognition and aggressive management (fluid, antibiotics) are critical.

Memory trick: Elderly Sepsis: Slow Onset, Confused Mind, Infection Signs.

Ventricular fibrillation is a chaotic, unsynchronized electrical activity in the ventricles leading to no cardiac output. The definitive treatment is immediate defibrillation.

• VF is a shockable rhythm.
• Defibrillation is time-sensitive; delays reduce survival.
• CPR should continue until defibrillator is ready.

Memory trick: VF means 'Zap Fast'!

Nitroglycerin is a vasodilator commonly used for chest pain in acute coronary syndromes. However, it is contraindicated in right ventricular (inferior) myocardial infarction, especially with hypotension, due to the risk of profound hypotension.

• Inferior MI often affects the right ventricle.
• Right ventricle is preload-dependent.
• Nitroglycerin reduces preload, which can lead to severe hypotension in RV infarction.
• Signs of RV infarction: ST elevation in II, III, aVF, often with bradycardia and hypotension.

Memory trick: Nitro-NO! for Low BP, RV-Oh-NO!

Nitroglycerin is a potent vasodilator used for chest pain, but it is contraindicated in certain cardiac conditions due to its effect on blood pressure and preload.

• Contraindicated with SBP < 90 mmHg.
• Contraindicated with recent PDE5 inhibitor use (e.g., sildenafil, tadalafil).
• Use with caution in inferior MI, especially with bradycardia or right ventricular involvement, due to preload dependency.

Memory trick: Inferior MI + Brady/Hypo: 'No Nitroglycerin' – it's a 'No-Go'!

Symptomatic bradycardia is a heart rate less than 60 bpm causing signs/symptoms of decreased cardiac output (e.g., hypotension, altered mental status, syncope).

• Identify bradycardia and associated symptoms.
• First-line drug: Atropine (if effective for level of block).
• If atropine ineffective or wide QRS, prepare for transcutaneous pacing.
• Dopamine or epinephrine infusions are alternatives if pacing is delayed or ineffective.

Memory trick: Slow Heart, Low Pressure, Pace it Now!

For acute ST-elevation myocardial infarction (STEMI), initial pain management prioritizes nitroglycerin to reduce myocardial oxygen demand and improve coronary blood flow.

• Nitroglycerin is a potent vasodilator, reducing preload and afterload.
• It helps relieve ischemic chest pain.
• Administered sublingually, transdermally, or intravenously.
• Contraindicated if hypotensive, bradycardic, or recent PDE5 inhibitor use (e.g., Viagra).

Memory trick: Nitro First, Then Opioids for STEMI Pain!

Shock is a state of inadequate tissue perfusion. Initial management focuses on addressing the underlying cause, supporting circulation, and improving oxygen delivery.

• Identify and treat the underlying cause (e.g., hypovolemia, cardiac, distributive).
• Fluid resuscitation is often an initial step in many forms of shock.
• Vasopressors are used when fluid resuscitation is insufficient.

Memory trick: Shock: 'Fluids First' to 'Fill the Tank'!

For ST-elevation myocardial infarction (STEMI), rapid reperfusion therapy, typically via percutaneous coronary intervention (PCI), is the highest priority to minimize myocardial damage.

• STEMI indicates complete coronary artery occlusion.
• Time is muscle: faster reperfusion improves outcomes.
• PCI is preferred over fibrinolysis if available within a reasonable timeframe (e.g., 90-120 minutes door-to-balloon).

Memory trick: ST elevation means 'Send Them Immediately' to the cath lab!

Non-ST elevation myocardial infarction (NSTEMI) and unstable angina are forms of acute coronary syndrome characterized by ischemic symptoms and ECG changes (ST depression or T-wave inversion) without ST elevation. NSTEMI involves elevated cardiac biomarkers, while unstable angina does not.

• Symptoms: chest discomfort (angina equivalent), dyspnea, nausea, diaphoresis.
• ECG: ST depression (horizontal or downsloping) and/or T-wave inversion.
• No persistent ST elevation.
• Cardiac enzymes distinguish NSTEMI from unstable angina (elevated in NSTEMI).

Memory trick: ACS: STEMI, NSTEMI, Unstable Angina - ECG and Enzymes Tell All!

For a stable patient with regular, narrow-complex tachycardia, the initial intervention should be vagal maneuvers to attempt to terminate the dysrhythmia.

• Patient must be stable (no signs of shock, acute altered mental status, ongoing ischemic chest discomfort, acute heart failure).
• ECG must show regular, narrow-complex rhythm.
• Vagal maneuvers (e.g., Valsalva, carotid sinus massage) increase vagal tone to slow heart rate.

Memory trick: Start with Vagal, then Zap with Meds!

Pulseless Electrical Activity (PEA) is a clinical condition of cardiac arrest characterized by organized electrical activity on the electrocardiogram (ECG) monitor, but without any palpable pulse or effective cardiac contraction.

• ECG shows a rhythm that should produce a pulse, but no pulse is found.
• Patient is unresponsive and apneic.
• Non-shockable rhythm.
• Management focuses on high-quality CPR, epinephrine, and identifying/treating reversible causes (H's and T's).

Memory trick: Shock or Not? Check the Rhythm Dot!

A wide, regular, fast heart rhythm originating in the ventricles, where the patient has no palpable pulse. It is a form of cardiac arrest and is treated as a shockable rhythm.

• Treated identically to ventricular fibrillation (VF).
• Immediate defibrillation is the priority.
• High-quality CPR should continue between shocks.

Memory trick: Pulseless VT: 'Shock' it 'Strong' and 'Soon'!

Managing atrial fibrillation with rapid ventricular response involves slowing the heart rate to improve symptoms and cardiac output. In patients with COPD, medication choices are crucial to avoid respiratory complications.

• Goal is to reduce ventricular rate, usually to <100 bpm.
• Calcium channel blockers (diltiazem, verapamil) are often first-line.
• Beta-blockers (metoprolol, atenolol) can exacerbate COPD.
• If unstable, immediate synchronized cardioversion is indicated.

Memory trick: Calm the heart, don't harm the lungs!

Aspirin is an antiplatelet medication that prevents clot formation. It is a cornerstone of immediate treatment for acute coronary syndromes, including STEMI.

• Inhibits platelet aggregation, reducing thrombus formation.
• Administered orally, chewed, for rapid absorption.
• Standard dose for acute STEMI is 162-325 mg.
• Should be given as early as possible unless contraindicated.

Memory trick: Aspirin Chewed, Clot is Screwed!

A regular, fast heart rhythm originating above the ventricles, with a narrow QRS complex, where the patient maintains stable vital signs.

• Often Supraventricular Tachycardia (SVT).
• Initial treatment involves vagal maneuvers.
• Adenosine is the first-line pharmacological treatment if vagal maneuvers fail.

Memory trick: Stable SVT: 'Vagal' then 'Adenosine' and 'Don't Get Shocked'!

Aortic dissection is a tear in the inner layer of the aorta, leading to blood flow between the layers. It's a medical emergency requiring immediate definitive surgical intervention.

• Classic presentation: sudden, severe, tearing chest/back pain.
• Often associated with uncontrolled hypertension.
• Blood pressure differential between limbs is a key sign.
• Management focuses on rapid diagnosis, BP control (if not hypotensive), and immediate surgical consultation/transport.

Memory trick: Tear in the aorta, time is short, transport is key!

Pulseless Ventricular Tachycardia (pVT) and Ventricular Fibrillation (VF) are life-threatening cardiac arrest rhythms requiring immediate defibrillation.

• Both are 'shockable' rhythms.
• Defibrillation is the most critical intervention.
• CPR should be continuous between shocks.

Memory trick: Shock the v-fib, pace the slow, check the PEA, asystole's a no-go.

Pulseless Electrical Activity (PEA) is a non-shockable cardiac arrest rhythm characterized by organized electrical activity on the ECG but no palpable pulse, requiring high-quality CPR, epinephrine, and prompt identification/treatment of reversible causes.

• PEA is a non-shockable rhythm.
• Epinephrine 1 mg IV/IO is administered every 3-5 minutes.
• High-quality CPR is continuous.
• Focus on identifying and treating the 'H's and 'T's (reversible causes).

Memory trick: PEA: Epi + H's & T's!

Asystole is a non-shockable cardiac arrest rhythm (a 'flat line' on ECG) requiring continuous high-quality CPR, epinephrine administration, and a diligent search for reversible causes.

• Confirm asystole in at least two different leads to rule out lead detachment.
• It is a non-shockable rhythm.
• Epinephrine 1 mg IV/IO is administered every 3-5 minutes.
• Focus on identifying and treating the 'H's and 'T's.

Memory trick: Asystole: Flat Line, Give Epi, Search for Cause!

Stable narrow-complex tachycardia (often SVT) is a rapid heart rhythm originating above the ventricles, with QRS duration < 0.12 seconds, where the patient is hemodynamically stable.

• Commonly presents with palpitations, lightheadedness, anxiety.
• First-line intervention: Vagal maneuvers (Valsalva, carotid sinus massage).
• If vagal maneuvers fail, adenosine is the drug of choice.
• Beta-blockers or calcium channel blockers can also be used.

Memory trick: Fast and Stable? Vagal, then Adenosine's the Label!

The immediate management priority for acute aortic dissection is aggressive control of blood pressure and heart rate to reduce aortic wall stress and prevent further dissection.

• Classic presentation: sudden onset, severe, tearing/ripping pain radiating to back/abdomen.
• Key physical finding: differential blood pressures between limbs or pulse deficits.
• Goal BP: Systolic 100-120 mmHg; Goal HR: < 60 bpm with beta-blockers first.

Memory trick: Dissection Danger: Drop Pressure, Slow Heart, Save the Aorta!

Cardiogenic shock is a state in which the heart has been damaged to the point that it is unable to supply enough blood to the organs of the body. It is a form of pump failure.

• Caused by severe myocardial dysfunction (e.g., large MI, severe heart failure).
• Characterized by hypotension, tachycardia, signs of poor perfusion (cool/clammy skin, altered mental status).
• Often associated with chest pain or other cardiac symptoms.
• Requires aggressive management to support cardiac function and perfusion.

Memory trick: Hypo, Cardio, Distribute, Obstruct, Oh My!

Hypovolemic shock results from inadequate circulating blood volume, presenting with signs of poor perfusion such as hypotension, tachycardia, cool/pale/clammy skin, and altered mental status.

• Caused by significant fluid loss (e.g., hemorrhage, severe dehydration, burns).
• Compensatory mechanisms include increased heart rate and peripheral vasoconstriction.
• Treatment focuses on identifying and stopping fluid loss, and aggressive fluid resuscitation.

Memory trick: H.O.C.D. - Hypo, Obstructive, Cardio, Distributive

Ventricular fibrillation is a chaotic, shockable rhythm requiring immediate defibrillation to attempt to restore normal cardiac activity, in conjunction with high-quality CPR.

• VF is characterized by disorganized electrical activity.
• It is a cause of cardiac arrest and is pulseless.
• Early defibrillation is the most important intervention for survival.

Memory trick: VF = Zap First, Then Push Hard!

Non-ST-Elevation Myocardial Infarction (NSTEMI) is a type of acute coronary syndrome where there is myocardial necrosis (elevated cardiac biomarkers) without ST-segment elevation on the ECG. ECG changes often include ST depression or T-wave inversion.

• Symptoms can be typical (chest pain) or atypical (jaw pain, arm pain, weakness, dyspnea).
• ECG findings: ST depression, T-wave inversion, or non-specific changes.
• Cardiac biomarkers (troponins) are elevated.
• Management involves antiplatelets, anticoagulants, and risk stratification.

Memory trick: ECG dips, Troponin lifts, Atypical NSTEMI shifts!

The highest priority in prehospital management of ST-elevation myocardial infarction (STEMI) is rapid recognition and expedited transport to a facility capable of primary percutaneous coronary intervention (PCI) to achieve timely reperfusion.

• Time is myocardium: faster reperfusion leads to better outcomes.
• Goal: 'Door-to-balloon' time of <90 minutes for PCI.
• Prehospital ECG acquisition and transmission can significantly reduce treatment delays.
• Initial medical management (aspirin, oxygen, nitroglycerin) is important, but transport for reperfusion is paramount.

Memory trick: STEMI: Go Fast to the Cath Lab!