⚡ Pulseless ventricular tachycardia is a shockable cardiac arrest rhythm that requires immediate defibrillation.

⚡ Defibrillation delivers an unsynchronized electrical shock to stop the abnormal ventricular rhythm and allow the heart’s normal pacemaker to regain control.

⚡ The nurse should also initiate high-quality cardiopulmonary resuscitation (CPR) while the defibrillator is being prepared.

⚡ After the shock, CPR should resume immediately for approximately 2 minutes before reassessing the rhythm and pulse.

⚡ Rapid defibrillation is essential because delays reduce the likelihood of return of spontaneous circulation and survival.

Implantation of a cardioverter

⚡ An implantable cardioverter-defibrillator may be used later to prevent recurrent life-threatening ventricular dysrhythmias.

⚡ It is not the immediate intervention for a patient who is currently in pulseless cardiac arrest.

ECG monitoring

⚡ ECG monitoring helps identify and evaluate cardiac rhythms, but it does not treat pulseless ventricular tachycardia.

⚡ The rhythm has already been identified, so the priority is immediate defibrillation and CPR.

Angioplasty

⚡ Angioplasty may be performed to restore coronary blood flow in a patient with an acute coronary artery blockage.

⚡ It is not the first intervention during active cardiac arrest caused by pulseless ventricular tachycardia.

🩸 Tissue plasminogen activator dissolves blood clots by converting plasminogen into plasmin, thereby promoting fibrinolysis.

🩸 The most serious complication of t-PA therapy is bleeding, especially intracranial hemorrhage.

🩸 The nurse should monitor for sudden neurological deterioration, severe headache, decreased level of consciousness, nausea, vomiting, or new weakness.

🩸 Other signs of bleeding include hematuria, gastrointestinal bleeding, bruising, bleeding from IV sites, and a falling hemoglobin level.

🩸 Invasive procedures and unnecessary venipunctures should be minimized because they increase the risk of hemorrhage.

Septicemia

🩸 Septicemia is a systemic bloodstream infection and is not a typical complication of thrombolytic therapy.

🩸 t-PA increases bleeding risk rather than directly causing infection.

Seizures

🩸 Seizures may occur in some patients following a stroke due to cerebral injury.

🩸 However, the priority complication specifically associated with t-PA administration is hemorrhage.

Acute pain

🩸 Acute pain is not a common adverse effect of t-PA treatment for ischemic stroke.

🩸 A sudden severe headache would be concerning because it may indicate intracranial bleeding, not routine pain.

🩺 A hypertensive emergency involves severely elevated blood pressure accompanied by acute target organ damage.

🩺 Target organ complications may include encephalopathy, stroke, myocardial infarction, pulmonary edema, aortic dissection, or acute kidney injury.

🩺 These patients require immediate treatment with intravenous antihypertensive medications in a closely monitored setting.

🩺 Hypertensive urgency involves severely elevated blood pressure without evidence of acute target organ injury.

🩺 The presence or absence of organ damage, rather than the exact blood pressure value alone, distinguishes an emergency from an urgency.

Hypertensive urgency is treated with rest and benzodiazepines to lower blood pressure.

🩺 Hypertensive urgency is generally managed with oral antihypertensive medication and gradual blood pressure reduction.

🩺 Benzodiazepines are not standard treatment unless anxiety or another specific indication is present.

Vigilant hemodynamic monitoring is required during treatment of hypertensive emergencies.

🩺 This statement is true regarding the management of hypertensive emergencies.

🩺 However, it does not identify the key difference between urgency and emergency, which is target organ damage.

The blood pressure is always higher in a hypertensive emergency.

🩺 Blood pressure levels may overlap between hypertensive urgency and hypertensive emergency.

🩺 A patient can have a lower pressure but still have an emergency if acute organ damage is present.

🦵 Moderate exercise, especially a structured walking program, helps improve collateral circulation in patients with peripheral arterial insufficiency.

🦵 Walking increases oxygen demand in the muscles and encourages the development of alternative blood-flow pathways.

🦵 The patient should walk until moderate claudication occurs, rest until the pain subsides, and then resume walking.

🦵 Regular exercise can increase walking distance, reduce claudication symptoms, and improve overall functional ability.

🦵 The nurse should also teach the patient to stop smoking, protect the feet, and control diabetes, hypertension, and cholesterol.

Encourage extended periods of sitting or standing.

🦵 Prolonged sitting or standing can reduce circulation and increase blood pooling in the extremities.

🦵 Frequent movement and regular walking are more beneficial for improving arterial blood flow.

Discourage walking in order to limit pain.

🦵 Avoiding walking may decrease discomfort temporarily but contributes to deconditioning and worsening circulation.

🦵 A supervised walking program is one of the most effective nonpharmacological treatments for intermittent claudication.

Elevate the legs and arms above the heart when resting.

🦵Elevating extremities above the heart further reduces arterial blood flow to tissues that are already poorly perfused.

🦵 Patients with arterial insufficiency generally experience relief when the legs are kept dependent or slightly lowered.

❤️ The patient's history of a previous myocardial infarction involving the circumflex artery significantly increases the risk of left ventricular dysfunction, which can progress to heart failure.

❤️ Findings such as severe shortness of breath, orthopnea (unable to sleep lying flat), tachypnea, accessory muscle use, and oxygen saturation of 90% strongly indicate acute pulmonary edema caused by left-sided heart failure.

❤️ The 10-pound weight gain within one week and 2+ pitting edema indicate significant fluid volume overload, a hallmark finding of acute decompensated heart failure.

❤️ Left ventricular failure causes blood to back up into the pulmonary circulation, increasing pulmonary capillary pressure and allowing fluid to leak into the alveoli, resulting in impaired gas exchange and respiratory distress.

❤️ This patient requires immediate interventions, including supplemental oxygen, continuous cardiac monitoring, IV diuretics (such as furosemide), possible vasodilator therapy, and close assessment for worsening respiratory failure.

Worsening shortness of breath over the past 24 hours

❤️ The patient’s progressively worsening shortness of breath suggests increasing pulmonary congestion caused by left ventricular failure.

❤️ When the left ventricle cannot pump blood effectively, blood backs up into the pulmonary circulation.

❤️ This increased pressure causes fluid to leak into the lung tissues and alveoli.

❤️ Fluid accumulation in the lungs reduces oxygen exchange and makes breathing increasingly difficult.

❤️ The rapid worsening over 24 hours supports an acute decompensation rather than stable chronic heart failure.

Ten-pound weight gain in one week

❤️ A 10-pound weight gain within one week strongly indicates rapid fluid retention rather than true body-weight gain.

❤️ In heart failure, reduced cardiac output activates the renin-angiotensin-aldosterone system.

❤️ This hormonal response causes the kidneys to retain sodium and water.

❤️ The retained fluid increases circulating volume and worsens pulmonary and peripheral congestion.

❤️ Rapid weight gain is therefore a key indicator of worsening fluid overload and decompensated heart failure.

Two-plus pitting edema in both ankles

❤️ Two-plus pitting edema indicates that excess fluid has accumulated in the tissues of the lower extremities.

❤️ Fluid buildup occurs when increased venous pressure forces fluid out of the blood vessels and into the surrounding tissues.

❤️ Although ankle edema is commonly associated with right-sided congestion, it may also occur in advanced or combined heart failure.

❤️ The bilateral nature of the edema supports a systemic cause rather than a localized injury or obstruction.

❤️ This finding provides further evidence of significant fluid volume excess.

Oxygen saturation of 90% with accessory-muscle use and short-sentence speech

❤️ An oxygen saturation of 90% on room air indicates inadequate oxygenation.

❤️ Pulmonary edema interferes with oxygen movement from the alveoli into the bloodstream.

❤️ The use of accessory muscles shows that the patient is working harder than normal to breathe.

❤️ Speaking only in short sentences is a sign of moderate-to-severe respiratory distress because the patient cannot maintain enough airflow for prolonged speech.

❤️ Together, these findings strongly support acute pulmonary congestion with impaired gas exchange.

Tachycardia of 106/min and tachypnea of 26/min

❤️ A heart rate of 106/min reflects tachycardia, which is a compensatory response to decreased cardiac output.

❤️ The heart beats faster in an attempt to deliver more oxygenated blood to the tissues.

❤️ A respiratory rate of 26/min indicates tachypnea caused by hypoxemia and pulmonary congestion.

❤️ Faster breathing helps the body compensate for reduced oxygen exchange in the lungs.

❤️ These abnormal vital signs demonstrate that the patient is experiencing physiological stress from worsening heart failure and respiratory compromise.

Place the patient in high-Fowler’s position

❤️ Positioning the patient in high-Fowler’s position promotes maximum lung expansion and reduces the work of breathing.

❤️ Sitting upright allows the diaphragm to move more freely and improves ventilation.

❤️ This position also decreases venous return to the heart, which can reduce pulmonary congestion.

❤️ Because the patient is using accessory muscles and can speak only in short sentences, improving respiratory mechanics is an immediate priority.

❤️ High-Fowler’s position should therefore be initiated promptly to support breathing and decrease respiratory distress.

Apply supplemental oxygen

❤️ The patient’s oxygen saturation of 90% on room air indicates hypoxemia and impaired gas exchange.

❤️ Supplemental oxygen increases the amount of oxygen available for diffusion across the fluid-filled alveoli.

❤️ Oxygen therapy can reduce dyspnea, decrease cardiac workload, and improve tissue oxygenation.

❤️ The nurse should closely monitor oxygen saturation, respiratory effort, mental status, and response to therapy.

❤️ Applying oxygen is an immediate intervention because untreated hypoxemia can rapidly lead to worsening respiratory failure and organ dysfunction.

Administer an IV loop diuretic, such as furosemide, as ordered

❤️ An IV loop diuretic helps remove excess sodium and water caused by acute fluid volume overload.

❤️ Reducing intravascular volume lowers pulmonary capillary pressure and helps move fluid out of the lungs.

❤️ This can improve shortness of breath, decrease edema, and reduce cardiac workload.

❤️ The nurse should monitor urine output, blood pressure, potassium level, renal function, and the patient’s overall response.

❤️ IV administration is preferred in acute decompensated heart failure because it produces a faster and more reliable effect than oral medication.

Oxygen therapy with possible noninvasive positive-pressure ventilation, such as BiPAP

❤️ The provider will likely order supplemental oxygen immediately because the patient’s oxygen saturation is 90% on room air, indicating hypoxemia.

❤️ Oxygen therapy increases the amount of oxygen available for gas exchange and helps improve tissue oxygenation.

❤️ Because the patient is using accessory muscles and can speak only in short sentences, BiPAP may be ordered if standard oxygen does not adequately relieve respiratory distress.

❤️ BiPAP increases airway pressure, keeps the alveoli open, and helps move pulmonary edema fluid away from the gas-exchanging surfaces.

❤️ This is the highest-priority order because supporting airway, breathing, and oxygenation takes precedence over medications and diagnostic testing.

Intravenous furosemide

❤️ The provider will likely order IV furosemide, a loop diuretic, to rapidly remove excess sodium and water from the body.

❤️ The patient’s 10-pound weight gain and 2+ pitting edema indicate significant fluid volume overload.

❤️ Diuresis reduces circulating blood volume and lowers the pressure within the pulmonary capillaries.

❤️ This decrease in preload helps relieve pulmonary congestion, shortness of breath, and peripheral edema.

❤️ The nurse should monitor urine output, blood pressure, potassium, magnesium, and renal function because rapid diuresis can cause hypotension and electrolyte imbalances.

Intravenous nitroglycerin

❤️ The provider may order IV nitroglycerin because the patient is hypertensive enough to tolerate vasodilator therapy, with a blood pressure of 146/88 mm Hg.

❤️ Nitroglycerin causes venous dilation, which reduces venous return to the heart and decreases preload.

❤️ At higher doses, it also reduces systemic vascular resistance and afterload, making it easier for the left ventricle to eject blood.

❤️ Reducing cardiac workload and pulmonary capillary pressure can rapidly improve dyspnea associated with acute pulmonary edema.

❤️ Continuous blood pressure monitoring is essential because nitroglycerin can cause hypotension, dizziness, and headache.

Chest X-ray

❤️ A chest X-ray will likely be ordered to evaluate the lungs and support the diagnosis of acute pulmonary edema.

❤️ Expected findings may include bilateral pulmonary infiltrates, vascular congestion, interstitial edema, or an enlarged cardiac silhouette.

❤️ The test can also identify pleural effusions, which may occur with decompensated heart failure.

❤️ A chest X-ray helps distinguish heart failure from other causes of dyspnea, including pneumonia or other pulmonary disorders.

❤️ Although important, this diagnostic test follows immediate stabilization because it does not directly correct the patient’s hypoxemia or fluid overload.

BNP level and cardiac enzyme testing

❤️ The provider will likely order a B-type natriuretic peptide level because BNP rises when the ventricles are stretched by excessive pressure and fluid volume.

❤️ An elevated BNP supports the diagnosis of acute decompensated heart failure and may help assess its severity.

❤️ Cardiac troponin levels should also be obtained because myocardial ischemia or another infarction may have triggered the patient’s deterioration.

❤️ Serial troponin measurements, combined with an electrocardiogram, help identify ongoing myocardial injury that may require additional treatment.

❤️ These laboratory tests are important for confirming the cause and guiding long-term management, but they are performed after immediate respiratory and circulatory stabilization has begun.

💉 Weight in kilograms: 143 lb × 0.45 = 64.35 kg

💉 Required dose: 64.35 kg × 1.5 mg/kg/hr = 96.525 mg/hr

💉 Available concentration: 50 mg/mL

💉 Infusion rate: 96.525 mg/hr ÷ 50 mg/mL = 1.9305 mL/hr

💉 Rounded to the available answer: 1.95 mL/hr

6.32 mL/hr

💉 This rate would administer 316 mg of phenobarbital per hour, which is substantially greater than the prescribed dose.

💉 Administering this excessive rate could cause severe sedation, respiratory depression, hypotension, or toxicity.

0.9 mL/hr

💉 This rate would provide only 45 mg/hr, which is less than half of the calculated dose.

💉 Giving this rate could result in underdosing and inadequate therapeutic control.

21 mL/hr

💉 This rate would deliver 1,050 mg/hr, which is dangerously higher than the prescribed amount.

💉 Such a serious overdose could cause profound central nervous system depression, respiratory arrest, coma, or death.

🩸 A platelet count of 17,000/mm³ indicates severe thrombocytopenia, because the normal platelet range is approximately 150,000 to 400,000/mm³.

🩸 Petechiae are small, pinpoint, nonblanching red or purple spots caused by bleeding from tiny capillaries beneath the skin.

🩸 Platelets are essential for forming the initial plug that stops bleeding after blood vessel injury.

🩸 When the platelet count is extremely low, the patient can develop spontaneous skin and mucosal bleeding, even without trauma.

🩸 Additional findings may include easy bruising, purpura, bleeding gums, epistaxis, hematuria, and prolonged bleeding.

Urticaria

🩸 Urticaria consists of raised, itchy wheals that usually develop because of an allergic or hypersensitivity reaction.

🩸 It is not a typical manifestation of a severely reduced platelet count.

Alopecia

🩸 Alopecia refers to hair loss and can occur with autoimmune disorders, hormonal changes, nutritional deficiencies, or chemotherapy.

🩸 It does not result directly from thrombocytopenia or impaired blood clotting.

Dermatitis

🩸 Dermatitis causes inflammation, itching, redness, scaling, or irritation of the skin.

🩸 It is generally associated with allergic, irritant, or inflammatory conditions rather than a low platelet count.