Heart failure - Home - KSU Faculty Member websites
Download
Report
Transcript Heart failure - Home - KSU Faculty Member websites
Heart failure
Definition
Heart failure, also called "congestive heart
failure," is a disorder where the heart loses its
ability to pump blood efficiently.
Heart failure is almost always a chronic, long-term
condition that is managed with medications and
lifestyle changes.
Introduction
Heart failure occurs when the heart is unable to
pump enough blood through the body. This
condition usually occurs over time and is the
result of some form of heart disease.
The condition is slightly more common among
men than women.
Pathophysiology
Heart failure is a clinical syndrome that occurs
when the heart does not function adequately
as a pump and fails to pump enough blood to
meet the body's metabolic needs.
Congestion (the buildup of fluid).
intravascular and interstitial volume overload
and decreased tissue perfusion.
Pathophysiology
Systolic heart failure occurs when the heart's
ability to contract decreases.
Left ventricular systolic heart failure cause fluid
congestion in the lungs, a condition known as
pulmonary edema.
Right ventricular heart failure causes
hepatomegaly and peripheral edema.
Pathophysiology
Diastolic heart failure occurs when the heart has
a problem relaxing. This form of heart failure may
lead to fluid accumulation in the pulmonary and
peripheral vasculature
Heart failure almost never occurs at the same
time as an acute myocardial infarction
The Onset of Heart Failure Is an
Indicator of One or More of the
Following Problems
Acute myocardial infarction
Hypertension
Fluid overload
Intracranial injury
Dysrhythmias
The Onset of Heart Failure Is an
Indicator of One or More of the
Following Problems
Valvular heart disease
Hyperthyroidism
Cardiomyopathy
Fever
Adult respiratory distress syndrome
Heart Failure Can Also Occur in
Conjunction With
Pneumothorax
Oxygen toxicity syndrome
Intracranial tumors
Uremic pneumonia
Drugs (methotrexate, busulfan, hexamethonium,
nitrofurantoin)
Nursing Assessment
Symptoms
Severe dyspnea (especially on exertion)
Orthopnea
Weakness & fatigue
Paroxysmal nocturnal dyspnea
Weight gain
Nursing Assessment
Swelling of extremities
Palpitations
Reduced exercise capacity
Nocturia
Gastrointestinal symptoms (nausea, bloating,
constipation, anorexia)
Nursing Assessment
Record the patient's medical history
Diabetes
Thyroid disease
Cardiomyopathy
Collagen vascular disease
Nursing Assessment
Assessed for a history of
Previously compromised heart (chronic heart
failure)
Hypertension
Myocardial infarction
Medications
Allergies
Nursing Assessment
Perform a physical examination
Decreased pulse pressure
Diaphoresis
Tachycardia
Edema (extremities, anasarca, ascites)
Tachypnea
Nursing Assessment
Pulmonary rales or wheezes
Hepatomegaly
Distended neck veins
Increased venous pressure
Third heart sound (gallop)
Pulsus alternans
Hepatojugular reflux
Pleural effusion (hydrothorax)
Diagnostic Procedures
Diagnostic Procedures
Chest x-ray
Elevated BUN and creatinine levels
Hypokalemia (may be present if the patient is
taking thiazides or loop diuretics)
Abnormal liver function test values
Diagnostic Procedures
Proteinuria and high urine specific gravity
Hyponatremia (evident in cases of severe heart
failure)
Anemia
Impaired gas exchange (anxiety and fear)
Nursing Interventions
Airway, breathing, and circulation
Provide supplemental oxygen
Anticipate the need for endotracheal intubation
Suction as needed
Provide humidified oxygen
Elevate the head of the bed into a semi- to high
fowler's position
Nursing Interventions
Cardiac rhythm and vital signs, including heart
rate, pulse oximetry, blood pressure, lung
sounds, and respiratory rate. Monitor the
patient's level of consciousness, intake and
output, and skin perfusion.
Establish IV access.
Laboratory and ABG.
Chest x-ray.
Pharmacologic Agent
Diuretics (furosemide) decreases preload
secondary to reduction in blood volume
=hypokalemia, hyponatremia, need for Foley
catheterization
Pharmacologic Agent
Morphine venous and arterial vasodilation by
decreasing preload and afterload, reducing
anxiety and resulting heart stimulation, and
myocardial workload.
Avoid for patients: dyspnea, decreased level
consciousness, hypercarbia, or inadequate
ventilation.
Pharmacologic Agent
Vasodilators
Vasodilators (nitroglycerin, isosorbide)
Arteriolar dilators (hydralazine, minoxidil)
Combined dilators (nitroprusside)
ACE inhibitors (captopril, enalapril)
Pharmacologic Agent
Positive Inotropic agents
Sympathomimetics (dopamine, dobutamine)
Digitalis glycosides
Phosphodiesterase inhibitors (amrinone,
milrinone)
Decrease myocardial workload, improve
oxygen delivery to tissues, and increase
contractility and cardiac output
Pharmacologic Agent
Bronchodilators
Monitor the patient for pulmonary wheezing, as well
as side effects such as nausea, vomiting, and
tachyarrhythmias
Prepared to initiate advanced cardiac life
Patient Education
A patient who is experiencing heart failure, with or
without pulmonary edema, will be fearful and filled
with anxiety. Therefore, it is critical to maintain a
calm and efficient manner throughout the
assessment, diagnosis, and treatment of the
patient.
Patient Education
Once the patient is out of immediate danger,
always provide a thorough explanation of what is
happening in clear, straightforward terms. And
whenever possible, educate family members and
significant others who are present.
Conclusion
The proper identification and management of
heart failure requires a thorough understanding of
the pathophysiology of the disease and in-depth
knowledge of appropriate diagnostics,
interventions, and patient management
techniques.
Conclusion
When an understanding of all these elements is
achieved, better care can be given to the patient
experiencing heart failure, and mortality and
morbidity can be reduced.