Nursing Legend Day 2 Review: Cardiopulmonary, Fluid Dynamics, Shock, and Medication Safety

Vocabulary practice flashcards covering core cardiopulmonary concepts, fluid balance, shock recognition, pneumothorax management, and cardiac medication safety guidelines.

Left-Sided Heart Failure

A condition where fluid backs up into the lungs, leading to pulmonary edema, impaired gas exchange, hypoxemia risk, and severe dyspnea; classic clinical cues include orthopnea (upright gasping), anxiety, accessory muscle use, fine crackles moving up from the bases, and pink frothy sputum.

Pink Frothy Sputum

A cardinal red-flag cue of acute pulmonary edema signaling that fluid has backed up past the pulmonary capillaries directly into the alveoli during left-sided heart failure.

Right-Sided Heart Failure

A failure of the right ventricle that causes blood to back up into the body's systemic venous system ("think body"); characterized by high venous pressure, dependent peripheral edema, jugular vein distention (JVD), enlarged liver, ascites, and fluid retention.

Daily Weight Elevation in Heart Failure

A critical assessment metric for detecting systemic fluid congestion; an acute increase (such as going from $246.2\,\text{lbs}$ to $252.8\,\text{lbs}$, representing a $+6.6\,\text{lbs}$ overnight gain) indicates worsening volume retention.

Fluid Overload Cues

Clinical findings indicating hypervolemia, including crackles (wet lung sounds), shortness of breath, peripheral edema, rapid weight gain, jugular vein distention, elevated blood pressure, and decreased oxygen saturation ($\text{SpO}_2\text{ }88\%$).

High-Fowler's Position

The priority non-pharmacological nursing intervention for patients experiencing respiratory compromise from pulmonary edema or severe fluid overload, utilized to optimize lung expansion and ease gasping.

Fluid Deficit (Hypovolemia) Cues

Signs indicating critically reduced intravascular volume, including dry mucous membranes, poor skin turgor, tachycardia, hypotension, dizziness, confusion, cool skin, delayed capillary refill ($>3\,\text{seconds}$), and low urine output ($<30\,\text{mL/hr}$ in an adult).

Post-Diuretic Hypovolemia

A rapid volume contraction occurring after diuretic administration manifested by dizziness, lightheadedness, a weak or thready pulse, hypotension (e.g., $\text{BP } 86/52\,\text{mmHg}$, $\text{HR } 112\,\text{bpm}$), and dry mucous membranes.

Adult Urine Output Threshold

The critical minimum volume threshold of $<30\,\text{mL/hr}$, below which the kidneys signal inadequate systemic volume and poor renal perfusion.

Early Shock Cues

Subtle indicators of tissue hypoperfusion occurring before blood pressure collapses, consisting of tachycardia, restlessness, anxiety, cool clammy skin, narrow pulse pressure, delayed capillary refill ($>3\,\text{seconds}$), and decreased urine output ($<30\,\text{mL/hr}$).

Late Signs of Shock

Uncompensated manifestations of circulatory failure requiring emergency escalation, characterized by profound hypotension (e.g., $\text{BP } 82/48\,\text{mmHg}$), weak/thready pulse, deep confusion, and multi-organ failure.

Narrow Pulse Pressure

A clinical cue where the difference between systolic and diastolic blood pressure shrinks, serving as an early indicator of arterial vasoconstriction and hypovolemic or cardiogenic shock.

Cardiac Medication Hold Parameters

Prespecified vital sign and laboratory safety thresholds requiring the nurse to pause, hold the drug, and question the order before administration (e.g., checking heart rate, blood pressure, potassium levels, and active bleeding signs).

Beta Blocker Administration Traps

Medication risks associated with beta blockers (such as metoprolol); nurses must withhold the drug if the patient has a low heart rate (e.g., $\text{HR } 42\text{--}48\,\text{bpm}$), hypotension (e.g., $\text{BP } 88/54\,\text{mmHg}$ or $92/56\,\text{mmHg}$), symptomatic bradycardia (fatigue, lightheadedness), or worsening bronchospasm.

Apical Pulse Full 60-Second Rule

The mandatory pre-administration assessment for digoxin requiring auscultation of the apical pulse for one full minute to verify the heart rate is adequate before giving the dose.

Digoxin Toxicity Cues

Adverse drug accumulation signs including nausea, vomiting, confusion, bradycardia, cardiac dysrhythmias, and visual disturbances, particularly yellow-green halos around objects.

Hypokalemia-Digoxin Interaction

A dangerous physiological relationship where a low serum potassium level ($<3.5\,\text{mEq/L}$, such as $3.0\,\text{mEq/L}$) significantly increases the myocardium's sensitivity to digoxin, precipitating toxic arrhythmias.

Diuretic Electrolyte Traps

The clinical paradox where diuretic therapy successfully removes excess fluid volume but triggers hypokalemia (e.g., potassium dropping to $3.1\,\text{mEq/L}$), dehydration, hypotension, and life-threatening dysrhythmias.

Pneumothorax

An accumulation of air in the pleural space that exerts external pressure on the lung, preventing normal expansion and causing collapse; clinical cues include sudden sharp chest pain, dyspnea, anxiety, tachypnea, and absent or decreased lung sounds on the affected side.

Spontaneous Pneumothorax Patient Profile

A classic presentation typically seen in tall, thin, young patients who develop sudden, one-sided pleuritic chest pain and dyspnea that fails to resolve with bronchodilators such as albuterol.

Tension Pneumothorax

A medical emergency caused by rapidly accumulating air under positive pressure within the pleural cavity, characterized by tracheal deviation to the unaffected side, severe hypotension, and profound respiratory distress.

Continuous Bubbling in Water Seal

An abnormal finding in a chest tube drainage unit that indicates an air leak or disconnected tubing within the system rather than normal respiratory fluctuation.

Chest Tube System Position Rule

The fundamental safety principle requiring that the chest drainage collection unit remain continuously positioned below the level of the patient's chest to prevent backflow into the pleural space.

Chest Tube Clamping Restriction

A strict nursing safety rule stating that a chest tube should never be clamped without a specific medical indication or provider order due to the acute risk of inducing a tension pneumothorax.

Cardiopulmonary Interdependence

The NCLEX core concept that the cardiovascular and pulmonary systems function as one integrated unit: low oxygen stresses the heart, heart failure floods the lungs, fluid overload degrades oxygenation, and shock diminishes systemic oxygen delivery.