Comprehensive Nursing Study Guide: Cardiac, Sensory, and Medical-Surgical Interventions

Ophthalmic and Otic Nursing Interventions

• Cataract Surgery Education     * Patient education for cataract surgery is crucial as it is typically an outpatient procedure.     * The patient remains awake during the surgery.     * It is classified as ambulatory care.     * Since no general anesthesia is usually involved, nursing education focuses heavily on the administration and importance of post-operative eye drops.

• Retinal Detachment     * Post-surgical monitoring is vital for identifying complications.     * Patients must be instructed to immediately report any sudden loss of vision.     * Any new onset of pain ($px$) in the surgical eye is a significant warning sign that requires reporting.

• Foreign Body in the Eye and Traumatic Injury     * The absolute number one priority is always the assessment and maintenance of the airway.     * Once the airway is secured, the next major concern is the risk of infection.     * Antibiotic therapy should be considered and initiated due to high infection risks.     * Management Contraindication: Do NOT pull the object out of the eye.     * Note: Performing a visual acuity check is not the priority and is not always possible in traumatic situations.

• Meniere’s Disease     * The primary safety concern for patients with Meniere’s disease is the risk of falls due to severe dizziness and vertigo.     * Nursing actions must prioritize fall prevention strategies.

• Mastoiditis     * This condition often results from the progression of a severe ear infection.     * The most critical complication to watch for is the progression to meningitis.     * Current patient teaching should emphasize reporting symptoms of meningitis, including fever, pain ($px$), and a stiff neck.

• Noise-Induced Hearing Loss     * When prioritizing patients, identify those exposed to loud sounds on a regular basis as being at the highest risk for noise-induced hearing loss.

• Myringotomy and PE Tubes     * Nursing education for patients following a myringotomy (tubes placed after recurrent ear infections) involves strict moisture control.     * Patients should not shower or risk getting water in the ears for the first week post-procedure.     * The use of dry shampoo is recommended during this initial week.     * Additional restrictions for the first week include avoiding the use of straws, flying in airplanes, or showering.

• Cerumen Assessment in Older Adults     * If an older adult presents with decreased hearing that has developed over the last week, the priority nursing action is assessing for wax impaction (cerumen).

Cardiac Dysrhythmias and Defibrillation

• Initial Assessment of Cardiac Rhythms     * When a cardiac rhythm is identified, the first priority is to assess how the patient is tolerating it.     * Determine if the patient is conscious or unconscious.     * Rational: If the rhythm is not perfusing, the brain is not receiving blood flow, leading to an altered mental status. This is the primary indicator of patient tolerance.

• Defibrillation Protocols     * There are only two shockable rhythms: Ventricular Fibrillation ($V-fib$) and pulseless Ventricular Tachycardia ($V-tach$).     * Major Safety Priority: Ensure that "EVERYONE" and all "OXYGEN" sources are clear and away from the patient before delivering the shock.

• Implantable Cardioverter Defibrillator (ICD) Teaching     * Patients must avoid strong sources of electromagnetic fields.     * Specific Avoidance: Do not lean directly over an alternator or a running motor.     * Clothing: Avoid wearing tight clothing over the device site.     * Activity: Avoid strenuous exercise.     * Medication: Ensure the patient understands they must continue all prescribed medications.

• Symptoms of Impaired Perfusion     * Nurses must identify signs of hypoxia, which indicates impaired perfusion to the brain or vital organs.     * Ischemia is often represented as pain ($px$); therefore, chest pain and altered mental status are critical signs requiring intervention.

• Cardiac Rhythm Identification     * Sinus Rhythm: Characterized by a regular rhythm with a $P$ wave for every $QRS$ complex. Normal heart rate is between $60-100$ beats per minute ($bpm$).     * Sinus Bradycardia: Heart rate less than $60\,bpm$.     * Sinus Tachycardia: Heart rate greater than $100\,bpm$.     * Premature Atrial Contraction (PAC): An atrial contraction that occurs before or interrupts the $P$ wave. The $P$ wave does not originate from the SA node.     * Premature Ventricular Contraction (PVC): Ventricular activity that arises from a source other than the typical conduction path.     * Ventricular Tachycardia (V-tach): Characterized by rapid movement of the ventricles. The first priority is to check for a pulse.     * Ventricular Fibrillation (V-fib): The heart is quivering rather than pumping; this requires immediate action.

• Prioritizing Interventions     * If a patient has no pulse, CPR must be started regardless of the specific rhythm shown on the monitor.     * Discharge teaching for dysrhythmias must emphasize medication reconciliation, ensuring the patient understands their meds and how to communicate with the outpatient team.

• Cardioversion for Atrial Fibrillation ($A-fib$)     * Similar to defibrillation, the priority is to ensure everyone and all oxygen sources are clear before the procedure.

Heart Failure and Valvular Disease

• Left-Sided Heart Failure     * Common causes include Valvular Disease, Coronary Artery Disease ($CAD$), and Hypertension ($HTN$).

• Right-Sided Heart Failure     * Primary causes include Pulmonary Hypertension ($HTN$) and chronic smoking.

• Nitrate Administration     * Nitrates are administered to facilitate vasodilation.     * Nurses must be conscious of other vasodilating medications the patient may be taking, as side effects will be compounded.     * Common Side Effect: Headaches ($HA$) due to increased blood flow to the head.     * Management: Treat the expected symptom. If a headache is anticipated after nitrate administration, give acetaminophen ($Tylenol$).

• Digoxin (Lanoxin) Therapy     * GI absorption of Digoxin can be erratic.     * Antacids can significantly affect the absorption of the drug.     * Nursing Priority: Always hold the medication if the heart rate is $60\,bpm$ or lower (bradycardia).     * Note: Potassium ($K$) and aspirin do not have an impact on Digoxin absorption.

• Heart Failure Discharge and Monitoring     * The most effective way for a patient to track fluid status at home is through daily weights.     * In the event of an exacerbation, the priority assessment is the respiratory status (breathing and breath sounds).

• Valvular Procedures and Teaching     * Anticoagulation: Patients with prosthetic heart valves must remain on anticoagulants because platelets aggregate easily on prosthetic surfaces, initiating blood clot formation.     * Endocarditis Prevention: Patients must be taught to delay any dental work until at least $6$ months after surgery to prevent endocarditis.     * Bleeding Precautions: Standard teaching for anticoagulation applies, but the dental work restriction is the most critical post-op education point.     * Infective Endocarditis: This is not contagious; therefore, nursing staff should follow standard precautions.

Cardiovascular Pharmacology and Patient Management

• Assessing Heart Failure Severity     * Severity is often determined by the level of activity the patient can tolerate without experiencing difficulty breathing. Compare current activity levels to previous levels to gauge progression.

• Dietary Teaching for Hyperlipidemia     * Recommendations: Low saturated fats, low red meats, low salt, and low trans fats.     * Encourage: High intake of vegetables, whole grains, and fiber.

• Clopidogrel (Plavix)     * Used to reduce the risk of MI, stroke, and blood clots.     * Critical Interaction: This drug interacts with grapefruit. Consuming grapefruit while on Clopidogrel can lead to kidney ($KD$) failure.     * Monitoring: If labs show lowered kidney function, the nurse must ask the patient about grapefruit consumption.

• Encouraging Lifestyle Changes     * For patients overwhelmed by instructions, help them identify small, achievable steps and one minor lifestyle change at a time.

• Prioritizing Electrolyte Imbalances     * Potassium ($K$) is a priority lab value to monitor, especially when comparing patients on loop diuretics versus potassium-sparing diuretics.

• Peripheral Artery Disease (PAD)     * Disease progression is assessed by the level of activity tolerated without pain. If a patient must reduce activity to avoid pain, the disease is worsening.     * Self-Management Teaching: Never use heating pads (risk of burns due to poor sensation), do not cross legs when sitting, wear warm heavy socks, and quit smoking.

Post-Surgical and Acute Care Priorities

• Post-Limb Procedure Assessment     * Following procedures like a femoral-popliteal bypass, any sudden onset of symptoms in the limb requires an immediate assessment of CMS: Color, Movement, and Sensation of the distal extremity.

• Safety and Medication Side Effects     * A patient taking an ACE inhibitor for the first time may experience a drop in BP, making them a significant fall risk.     * A new onset cough in a patient on Lisinopril and Warfarin requires a thorough respiratory assessment (lung sounds).

• TED Hose Maintenance     * If a patient loses significant weight (e.g., $20\,lb$), they must be remeasured for new compression stockings to ensure proper fit and function.

• Aneurysm Safety     * In the presence of a suspected aneurysm (like an Abdominal Aortic Aneurysm/AAA), do NOT palpate the area.

• TPA and Alteplase Complications     * Used for clots in MI, but carries a high bleeding risk.     * If a patient on Alteplase develops neurological symptoms, notify the Rapid Response team immediately as this may indicate a hemorrhagic stroke.

Respiratory, Renal, and Fluid Balance

• COPD Management     * Administer oxygen conservatively to maintain the patient's respiratory drive.     * Teaching: Pursed-lip breathing, pacing activities, frequent rest, reporting lower extremity swelling, maintaining fluid intake, and smoking cessation.

• Upper GI Bleeding Symptomatology     * Symptoms include hematemesis, hemodynamic instability, weak pulses, low BP, increased HR, and decreased urine output (due to poor renal perfusion).

• Electrolyte Imbalances in Renal Failure     * Hyperkalemia: Occurs because the kidneys ($KD$) cannot clear potassium ($K$).     * ECG Changes: Look for tall, peaked $T$ waves.     * Physical symptoms: Palpitations, diarrhea, and skeletal muscle weakness.

• Hydration Labs     * Overhydration (Dilution): Lab values typically decrease.     * Dehydration (Concentration): Lab values typically increase.     * Specific Findings in Dehydration: Hematocrit and BUN will be elevated ($up$), while Magnesium ($Mg$) may be low ($down$).

• Acid-Base Imbalances     * Respiratory Acidosis: Often caused by hypoventilation/under-breathing, leading to the retention of $CO_2$.     * Respiratory Alkalosis: Often caused by hyperventilation.     * Priority: Fix the underlying breathing issue first; correcting the respiratory status may resolve the acidosis/alkalosis naturally.

Geriatrics and Musculoskeletal Care

• Elderly Skin Changes     * Characterized by decreased subcutaneous tissue, thinning, dryness, and reduced sensation.     * Increased risks: Skin tears, pressure injuries, and sunburn.     * Paraplegic patients with Stage IV ulcers are at extremely high risk and require immediate intervention.

• Total Hip Replacement Care     * Prioritize early mobilization to reduce risks of clots, constipation, and respiratory issues.     * Anticipate prophylactic antibiotics (not long-term) and TXA (Tranexamic acid) to prevent surgical blood loss.     * Surgical Approach Note: Patients with an anterior approach do NOT require an adduction pillow (it is non-essential).     * Nursing focus: Monitor CMS and utilize incentive spirometry ($IS$).

• Post-Anesthesia Care Unit (PACU) Priorities     * Following an open reduction internal fixation ($ORIF$), priorities should focus specifically on immediate PACU recovery concerns (ABCs and CMS).

Endocrine and Neurological Complications

• Diabetes Insipidus (DI)     * Common after brain surgery; often described as "Dry Inside" because the patient is fluid-depleted.     * Symptoms: Excessive urine output, low BP, poor skin turgor, increased HR, and dry mucous membranes.

• Thyroidectomy Complications     * Be alert for decreased Calcium ($Ca$) leading to tetany.     * Other risks: Laryngeal nerve impairment, neck edema, respiratory distress, bleeding, and thyroid storm.

• Type 2 Diabetes Emergency (High BP)     * Utilize the SPIDER mnemonic for management: Start a line, IV fluids, IV insulin, monitor neuro status, and implement fall precautions due to electrolyte shifts.

General Nursing Assessment

• Bronchoscopy Safety     * Before allowing a patient to drink water after a bronchoscopy, the nurse must perform a swallow screening and assess the gag reflex to prevent aspiration.

• Monitoring Dysrhythmias     * When a dysrhythmia is seen on a monitor, the most important assessment is determining if it is a perfusing rhythm and if the patient is hemodynamically stable.