Heart Failure - Acute Initial Assessment

Last updated: 08 June 2026
Reviewed by

Clinical Presentation

The diagnosis of acute heart failure is based on clinical findings supported by appropriate diagnostic evaluation performed urgently after first patient contact. This evaluation also helps identify patients with cardiogenic shock and respiratory failure.

Heart Failure  

Heart failure leads to neurohormonal and circulatory abnormalities producing the following manifestations: Breathlessness/dyspnea at rest or on exertion; unexplained fatigue or tiredness; decreased exercise capacity or increased time to recover after exercise; orthopnea; bendopnea; paroxysmal nocturnal dyspnea (PND) or nocturnal cough; cough or wheezing; palpitations; anorexia, nausea, vomiting, abdominal pain, bloated feeling, early satiety, or ascites; peripheral edema, and ankle swelling; confusion, disorientation, cognitive decline; weakness, or depression (especially in the elderly); weight gain (>2 kg/week); weight loss (in advanced heart failure); and syncope. More specific signs that are typical of heart failure include elevated jugular venous pressure, hepatojugular reflux, pulmonary crackles, an apical impulse that is laterally displaced, and the presence of S3 (gallop rhythm).



Heart Failure - Acute_Initial Assesment 1Heart Failure - Acute_Initial Assesment 1




Acute Heart Failure  

Acute heart failure is characterized by pulmonary congestion, decreased cardiac output, and tissue hypoperfusion. Most acute heart failure patients present with normal or high BP and signs and/or symptoms of congestion instead of a low cardiac output. This is a life-threatening condition that needs immediate medical attention.  

The indications for hospital admission include a new diagnosis of heart failure with rapidly progressive symptoms, severe congestion (eg ascites, marked leg edema, perineal or scrotal edema) or higher complexity of disease. This may be transient and reversible with resolution of the acute syndrome or may induce permanent damage leading to chronic heart failure.  

History

Patients may present with new-onset heart failure or an acute decompensation of chronic heart failure. Cardiogenic shock may present in patients with acutely decompensated heart failure. Patients most commonly complain of progressive dyspnea, abdominal fullness or tenderness, ankle swelling, nocturia, and neurologic symptoms (eg confusion, disorientation). Prior cardiac and non-cardiac history and testing (eg results of previous echocardiograms) are reviewed. Potential causes (underlying conditions or disease processes responsible for development of heart failure) and precipitants (triggers or contributing factors that lead to decompensation in patients with existing chronic heart disease) of heart failure are identified.

Physical Examination

Heart Failure - Acute_Initial Assesment 2Heart Failure - Acute_Initial Assesment 2




The physical examination includes taking of the vital signs (eg low or high BP, bradycardia, tachycardia with pulsus alternans, irregular pulse, tachypnea, increased work of breathing, apnea or hypopnea with respiratory rate <8 breaths/minute despite dyspnea, intolerance of supine position) and the patient's body mass index (BMI). Assess the hemodynamic status, heart rhythm, and level of dyspnea to determine the degree of cardiopulmonary instability. Check for cardiac murmurs, laterally displaced or prominent apex beat, S3 gallop, and accentuated pulmonic component of the second heart sound; a normal cardiac examination may be noted in heart failure from diastolic dysfunction. Hypoperfusion is a low output state usually caused by pump failure (eg cold sweaty extremities, oliguria, narrow pulse pressure, altered mental status, dizziness, and capillary refill time >2 seconds). This is often accompanied by but is not synonymous with hypotension. Congestion may be a left-sided (bilateral pulmonary rales, bilateral peripheral edema [eg ankle, sacral, scrotal]) or a right-sided (elevated jugular venous pressure, bilateral peripheral edema, hepatomegaly, ascites, hepatojugular reflux) volume overload. 

Based on the physical exam, acute heart failure can be classified based on the presence or absence of congestion (wet or dry) and/or hypoperfusion (cold or warm).

  • Warm-dry: Both hypoperfusion and congestion are absent
  • Warm-wet: Congestion present but without hypoperfusion
  • Cold-dry: Hypoperfusion present but without congestion
  • Cold-wet: Both hypoperfusion and congestion are present