Cardiogenic shock history and symptoms
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Editor-In-Chief: C. Michael Gibson, M.S., M.D. [1]; Associate Editor(s)-in-Chief: João André Alves Silva, M.D. [2] Syed Musadiq Ali M.B.B.S.[3] James Nasr[4]
Cardiogenic shock history and symptoms
Overview
The history in cardiogenic shock should focus on rapid recognition of symptoms suggesting reduced cardiac output, systemic tissue hypoperfusion, pulmonary or systemic congestion, and the likely precipitating cardiac disorder. Cardiogenic shock may present with overt hypotension and respiratory distress, but it may also present subtly with altered mentation, oliguria, fatigue, nausea, abdominal pain, or preserved blood pressure with biochemical or clinical hypoperfusion.[1][2]
A focused history should be obtained simultaneously with stabilization because the symptom pattern often identifies the shock phenotype and the treatment pathway. Chest pain with ischemic symptoms suggests acute myocardial infarction-related cardiogenic shock; progressive dyspnea and edema suggest heart failure-related cardiogenic shock; abrupt deterioration days after myocardial infarction suggests a mechanical complication; palpitations, syncope, or arrest suggest arrhythmia-related shock.[3][4]
Importance of early symptom recognition
Early recognition is critical because cardiogenic shock is a dynamic syndrome that can progress from preshock to established or refractory shock within hours. The 2025 ACC Expert Consensus Statement emphasizes that symptoms, bedside assessment, and vital signs are the starting point for suspicion of cardiogenic shock in any care setting; laboratory, imaging, and hemodynamic testing then confirm the diagnosis and phenotype.[1]
Symptoms should be reassessed serially. Worsening confusion, decreasing urine output, increasing dyspnea, new abdominal pain, or escalating fatigue may indicate progression of hypoperfusion even before frank hypotension develops.[1]
Common presenting symptoms
| Symptom domain | Symptoms elicited on history | Clinical implication |
|---|---|---|
| Low-output and hypoperfusion symptoms | Fatigue, generalized weakness, lightheadedness, presyncope, syncope, confusion, lethargy, somnolence, reduced urine output | Suggests inadequate systemic perfusion and should prompt evaluation for cardiogenic shock, especially in patients with acute cardiac disease.[1] |
| Pulmonary congestion symptoms | Dyspnea, orthopnea, paroxysmal nocturnal dyspnea, acute respiratory distress | Suggests elevated left-sided filling pressures, pulmonary edema, or acute LV failure.[2] |
| Ischemic symptoms | Chest pain, chest pressure, diaphoresis, nausea, dyspnea | Suggests acute myocardial infarction-related cardiogenic shock; chest pain may be absent in older adults, patients with diabetes, non-ischemic etiologies, or after cardiac arrest.[2] |
| Gastrointestinal symptoms | Nausea, vomiting, abdominal pain, early satiety, decreased appetite | May reflect splanchnic hypoperfusion, hepatic congestion, or nonocclusive mesenteric ischemia. Nonocclusive mesenteric ischemia should be suspected in patients with low-flow states or shock, especially cardiogenic shock, who develop abdominal pain (Class I, Level of Evidence B, ACC/AHA 2005 Peripheral Arterial Disease Guidelines).[5] The 2025 ACC Expert Consensus Statement also identifies nausea, vomiting, abdominal pain, early satiety, and decreased appetite as subtle symptoms of cardiogenic shock reflecting gastrointestinal ischemia due to inadequate cardiac output.[1] |
| Arrhythmic symptoms | Palpitations, presyncope, syncope, sudden collapse, cardiac arrest | Suggests ventricular tachycardia, ventricular fibrillation, high-grade atrioventricular block, or another rhythm-mediated cause of shock. |
| Systemic congestion symptoms | Abdominal fullness, early satiety, right upper quadrant discomfort, leg swelling, weight gain | Suggests right-sided congestion, biventricular failure, or decompensated chronic heart failure. |
| Anxiety and distress | Agitation, severe anxiety, sense of impending doom | May accompany hypoxemia, sympathetic activation, pain, or cerebral hypoperfusion. |
| Narrow pulse pressure | Pulse pressure less than 25% of systolic blood pressure | Suggests reduced stroke volume and low cardiac output in the appropriate clinical context.[2] |
Focused history-taking
A focused history should be obtained from the patient, family, emergency medical services, bedside staff, or prior records. History-taking should not delay resuscitation.
| History element | Key questions | Why it matters |
|---|---|---|
| Symptom onset and trajectory | When did symptoms begin? Was onset abrupt or progressive? Did symptoms worsen over minutes, hours, or days? | Helps distinguish acute myocardial infarction, arrhythmia, mechanical complication, myocarditis, and acute decompensated heart failure. |
| Chest pain history | Is there chest pain or pressure? What is the duration, radiation, associated diaphoresis, dyspnea, nausea, or syncope? | Suggests acute coronary syndrome or infarct-related shock. |
| Heart failure history | Is there known heart failure, cardiomyopathy, prior low ejection fraction, recent weight gain, orthopnea, edema, medication nonadherence, or recent diuretic change? | Suggests acute-on-chronic heart failure-related cardiogenic shock. |
| Prior cardiac procedures | Prior percutaneous coronary intervention, coronary artery bypass grafting, valve surgery, LVAD, transplant evaluation, or recent cardiac surgery? | Identifies high-risk substrate, graft or stent failure, post-cardiotomy shock, prosthetic valve dysfunction, or advanced heart failure. |
| Arrhythmia history | Palpitations, syncope, implantable cardioverter-defibrillator shocks, atrial fibrillation, bradyarrhythmia, or recent antiarrhythmic changes? | Identifies rhythm-mediated shock or arrhythmia as a trigger of decompensation. |
| Recent myocardial infarction | Was there a recent MI, delayed presentation, recurrent chest pain, or sudden worsening after initial improvement? | Abrupt deterioration after MI should raise suspicion for ventricular septal rupture, papillary muscle rupture, or free wall rupture.[6] |
| Medication and anticoagulation history | Recent beta-blocker, calcium-channel blocker, antiarrhythmic, diuretic, antiplatelet, anticoagulant, inotrope, or vasodilator exposure? | Helps identify medication-related worsening, bleeding risk, and procedural risk. |
| Non-cardiac precipitants | Fever, infection, bleeding, dehydration, pulmonary embolism symptoms, intoxication, or recent surgery? | Helps identify mixed cardiogenic-distributive, hypovolemic, or obstructive physiology. |
Etiology-specific symptom patterns
Acute myocardial infarction-related cardiogenic shock
Acute myocardial infarction-related cardiogenic shock commonly presents with chest pain or pressure, diaphoresis, nausea, dyspnea, and rapidly progressive symptoms of hypoperfusion. Shock may be present on arrival or may develop during hospitalization. In the SHOCK trial registry, the median time from acute myocardial infarction symptom onset to shock onset was approximately 5.5 hours, and many patients developed shock after initial presentation rather than at first medical contact.[2]
Compared with heart failure-related cardiogenic shock, acute myocardial infarction-related cardiogenic shock presents more fulminantly, with greater odds of cardiac arrest (OR 2.03, 95% CI 1.04-3.98) and SCAI stage D/E shock at presentation (OR 1.50, 95% CI 1.33-1.70) in a 2026 systematic review and meta-analysis of 29 studies including 497,368 patients.[7]
Heart failure-related cardiogenic shock
Heart failure-related cardiogenic shock may occur as acute-on-chronic decompensation or as de novo heart failure. Patients with acute-on-chronic heart failure-related shock often describe progressive dyspnea, orthopnea, reduced exercise tolerance, weight gain, abdominal bloating, early satiety, and lower-extremity edema over days to weeks before acute deterioration.
De novo heart failure-related cardiogenic shock may occur with acute myocarditis, stress cardiomyopathy, peripartum cardiomyopathy, toxin-mediated cardiomyopathy, or acute severe valvular disease. Symptoms may include acute dyspnea, chest discomfort, syncope, palpitations, or rapidly progressive fatigue without a known heart failure history.[4] In a single-center registry, heart failure-related cardiogenic shock had lower in-hospital and 1-year mortality than acute myocardial infarction-related cardiogenic shock, but both entities had substantial morbidity and require early phenotype recognition.[8]
Mechanical complications of myocardial infarction
Mechanical complications of myocardial infarction include ventricular septal rupture, papillary muscle rupture with acute severe mitral regurgitation, and free wall rupture. They most often occur within the first week after myocardial infarction and may present with abrupt dyspnea, pulmonary edema, recurrent chest pain, syncope, or sudden hemodynamic collapse after a period of apparent stability.[6][9][10]
A new murmur may be reported by clinicians or documented in the chart, but absence of a murmur does not exclude a mechanical complication, particularly acute severe mitral regurgitation where rapid left atrial and left ventricular pressure equalization may reduce murmur intensity.[6]
Right ventricular-dominant cardiogenic shock
Right ventricular-dominant cardiogenic shock may occur with right ventricular infarction, pulmonary embolism with RV failure, pulmonary hypertension, myocarditis, post-LVAD RV failure, or biventricular failure. Symptoms may include profound weakness, presyncope or syncope, dyspnea, abdominal fullness, nausea, early satiety, and right upper quadrant discomfort from hepatic congestion.[11] Vagotonic manifestations, including nausea, vomiting, and diaphoresis, may predominate in right ventricular infarction and can precede hemodynamic compromise.[12]
Patients with cardiogenic shock following right ventricular infarction classically present with hypotension, elevated jugular venous pressure, and clear lung fields.[12][13] In the SHOCK registry, cardiogenic shock following isolated right ventricular infarction occurred in 5.5% of patients (49 of 893). These patients were younger, had less multivessel disease, and had a shorter median time from myocardial infarction to shock onset than patients with LV infarction (2.9 hours vs. 6.2 hours).[2]
The history may suggest shock without prominent pulmonary congestion. Clear lung fields do not exclude cardiogenic shock, especially in right ventricular-dominant or cold-dry presentations.[2]
Arrhythmia-related cardiogenic shock
Arrhythmia-related cardiogenic shock may present with palpitations, abrupt dyspnea, presyncope, syncope, seizure-like collapse, implantable cardioverter-defibrillator shock, or cardiac arrest. Sustained ventricular tachycardia, ventricular fibrillation, rapid atrial arrhythmias, or high-grade atrioventricular block may precipitate or worsen cardiogenic shock in patients with acute cardiac disease.
Postcardiotomy cardiogenic shock
Postcardiotomy cardiogenic shock should be suspected when there is inability to wean from cardiopulmonary bypass, escalating vasoactive requirements, oliguria, altered mentation after surgery, persistent low-output symptoms, or early postoperative hemodynamic deterioration after cardiac surgery.
Timing of symptom onset
The timing of symptom onset helps identify the underlying cause and anticipated trajectory. Most patients with acute myocardial infarction-related cardiogenic shock evolve into shock over hours rather than presenting in shock at the first moment of symptom onset. A delay between chest pain onset and shock may reflect early compensation, infarct extension, recurrent ischemia, arrhythmia, or mechanical complication.[2]
Abrupt collapse or syncope suggests arrhythmia, massive pulmonary embolism, tamponade, mechanical complication, or severe acute valvular dysfunction. Progressive dyspnea, edema, abdominal bloating, and weight gain over days to weeks suggest acute-on-chronic heart failure-related shock. Deterioration within the first week after myocardial infarction should raise concern for mechanical complications.[6]
Normotensive cardiogenic shock symptoms
Normotensive cardiogenic shock is defined by organ hypoperfusion despite systolic blood pressure ≥90 mm Hg without the need for vasopressors, inotropes, or mechanical circulatory support.[4][3] This phenotype is easily missed when clinicians rely on blood pressure alone.
Symptoms and history features that should raise suspicion include:
- New confusion, somnolence, agitation, or unexplained change in mental status
- Decreased urine output or new oliguria
- Severe fatigue, weakness, presyncope, or syncope
- Nausea, vomiting, abdominal pain, early satiety, or decreased appetite
- Worsening dyspnea or orthopnea in a patient with known or suspected cardiac dysfunction
- Recent acute coronary syndrome, decompensated heart failure, arrhythmia, myocarditis, or cardiac surgery
Normotensive cardiogenic shock should be considered when these symptoms occur with elevated lactate, worsening renal function, hepatic injury, or other evidence of malperfusion despite preserved blood pressure.[1] In a secondary analysis of 1,068 patients eligible for the SHOCK registry, 49 patients (4.6%) had nonhypotensive cardiogenic shock, 76 patients (7.1%) had isolated hypotension without hypoperfusion, and 943 patients (88.3%) had classic cardiogenic shock with both hypotension and hypoperfusion. In-hospital mortality was 43% for nonhypotensive cardiogenic shock, 66% for classic cardiogenic shock, and 26% for isolated hypotension, underscoring that hypoperfusion is more prognostically important than hypotension alone.[14][2]
Hemodynamic profile-based symptom patterns
| Clinical profile | Common symptom pattern | Clinical interpretation |
|---|---|---|
| Cold and wet | Confusion, oliguria, fatigue, cool extremity symptoms, dyspnea, orthopnea, pulmonary edema | Classic low-output cardiogenic shock with congestion; common in acute myocardial infarction-related and heart failure-related shock.[2] |
| Cold and dry | Weakness, fatigue, presyncope, oliguria, altered mentation without prominent dyspnea or pulmonary congestion | Low-output state without obvious congestion; may occur in right ventricular-dominant shock, hypovolemia superimposed on cardiac dysfunction, or diuretic-treated heart failure. |
| Warm and wet | Dyspnea, orthopnea, edema, fatigue, sometimes fever or systemic inflammatory symptoms | Congestion with preserved peripheral warmth; may suggest mixed cardiogenic-distributive physiology or inflammatory vasodilation.[4] |
| Right ventricular-dominant | Presyncope, syncope, weakness, abdominal fullness, nausea, right upper quadrant discomfort, dyspnea with less pulmonary edema | Suggests RV infarction, RV failure, pulmonary hypertension, pulmonary embolism, or biventricular failure.[11] |
High-yield historical red flags
- Chest pain or pressure with dyspnea, diaphoresis, nausea, syncope, or altered mental status
- New oliguria or anuria in a patient with acute cardiac disease
- Progressive dyspnea, orthopnea, edema, and weight gain followed by acute deterioration
- Abrupt dyspnea, pulmonary edema, syncope, or collapse after recent myocardial infarction
- Palpitations, implantable cardioverter-defibrillator shock, syncope, or cardiac arrest
- Nausea, vomiting, abdominal pain, or early satiety in a patient with suspected low-output state
- Narrow pulse pressure, particularly pulse pressure less than 25% of systolic blood pressure
- Symptoms of hypoperfusion despite preserved systolic blood pressure
Common pitfalls in symptom assessment
- Waiting for hypotension before suspecting cardiogenic shock
- Attributing altered mental status to age, sedation, delirium, intoxication, or infection without assessing perfusion
- Dismissing gastrointestinal symptoms as unrelated to shock
- Assuming cardiogenic shock must present with pulmonary edema
- Missing right ventricular-dominant or cold-dry shock because lung symptoms are absent
- Treating cardiogenic shock as a static diagnosis rather than reassessing symptoms and trajectory serially
- Failing to ask about recent myocardial infarction, cardiac surgery, arrhythmia, device shock, or heart failure medication changes
Practical history approach
- Obtain the history while resuscitation proceeds.
- Determine whether symptoms suggest acute myocardial infarction, acute decompensated heart failure, mechanical complication, arrhythmia, myocarditis, valvular catastrophe, pulmonary embolism, or postcardiotomy shock.
- Ask specifically about chest pain, dyspnea, orthopnea, syncope, palpitations, reduced urine output, confusion, abdominal pain, nausea, early satiety, edema, weight gain, recent myocardial infarction, and recent cardiac surgery.
- Ask family, emergency medical services, bedside nurses, or prior records when the patient is confused, intubated, sedated, or post-arrest.
- Reassess symptoms and trajectory frequently, especially during the first 24 hours.
References
- ↑ 1.0 1.1 1.2 1.3 1.4 1.5 Sinha SS, Morrow DA, Kapur NK, Kataria R, Roswell RO (2025). "2025 Concise Clinical Guidance: An ACC Expert Consensus Statement on the Evaluation and Management of Cardiogenic Shock". Journal of the American College of Cardiology. 85 (16): 1618–1641. doi:10.1016/j.jacc.2025.02.018.
- ↑ 2.00 2.01 2.02 2.03 2.04 2.05 2.06 2.07 2.08 2.09 Samsky MD, Morrow DA, Proudfoot AG; et al. (2021). "Cardiogenic Shock After Acute Myocardial Infarction: A Review". JAMA. 326 (18): 1840–1850. doi:10.1001/jama.2021.18323.
- ↑ 3.0 3.1 Thiele H, Hassager C (2026). "Cardiogenic Shock". The New England Journal of Medicine. 394 (1): 62–77. doi:10.1056/NEJMra2312086.
- ↑ 4.0 4.1 4.2 4.3 Lüsebrink E, Binzenhöfer L, Adamo M; et al. (2024). "Cardiogenic Shock". Lancet. 404 (10466): 2006–2020. doi:10.1016/S0140-6736(24)01818-X.
- ↑ Hirsch AT, Haskal ZJ, Hertzer NR; et al. (2006). "ACC/AHA 2005 Guidelines for the Management of Patients With Peripheral Arterial Disease". Journal of the American College of Cardiology. 47 (6): 1239–1312. doi:10.1016/j.jacc.2005.10.009.
- ↑ 6.0 6.1 6.2 6.3 Damluji AA, van Diepen S, Katz JN; et al. (2021). "Mechanical Complications of Acute Myocardial Infarction: A Scientific Statement From the American Heart Association". Circulation. 144 (2): e16–e35. doi:10.1161/CIR.0000000000000985.
- ↑ Yilmaz MB, Kilic ME, Biegus J; et al. (2026). "Acute Myocardial Infarction Versus Acute Decompensated Heart Failure in Cardiogenic Shock: A Systematic Review and Meta-Analysis of Clinical Phenotypes and Mortality". European Journal of Heart Failure. doi:10.1093/ejhf/xuag186.
- ↑ Sinha SS, Rosner CM, Tehrani BN; et al. (2022). "Cardiogenic Shock From Heart Failure Versus Acute Myocardial Infarction: Clinical Characteristics, Hospital Course, and 1-Year Outcomes". Circulation: Heart Failure. 15 (6): e009279. doi:10.1161/CIRCHEARTFAILURE.121.009279.
- ↑ Cubeddu RJ, Lorusso R, Ronco D; et al. (2024). "Ventricular Septal Rupture After Myocardial Infarction: JACC Focus Seminar 3/5". Journal of the American College of Cardiology. 83 (19): 1886–1901. doi:10.1016/j.jacc.2024.01.041.
- ↑ Gong FF, Vaitenas I, Malaisrie SC, Maganti K (2021). "Mechanical Complications of Acute Myocardial Infarction: A Review". JAMA Cardiology. 6 (3): 341–349. doi:10.1001/jamacardio.2020.3690.
- ↑ 11.0 11.1 Konstam MA, Kiernan MS, Bernstein D; et al. (2018). "Evaluation and Management of Right-Sided Heart Failure: A Scientific Statement From the American Heart Association". Circulation. 137 (20): e578–e622. doi:10.1161/CIR.0000000000000560.
- ↑ 12.0 12.1 Goldstein JA, Lerakis S, Moreno PR (2024). "Right Ventricular Myocardial Infarction-a Tale of Two Ventricles: JACC Focus Seminar 1/5". Journal of the American College of Cardiology. 83 (18): 1779–1798. doi:10.1016/j.jacc.2023.09.839.
- ↑ Houston BA, Brittain EL, Tedford RJ (2023). "Right Ventricular Failure". The New England Journal of Medicine. 388 (12): 1111–1125. doi:10.1056/NEJMra2207410.
- ↑ Menon V, Slater JN, White HD; et al. (2000). "Acute Myocardial Infarction Complicated by Systemic Hypoperfusion Without Hypotension: Report of the SHOCK Trial Registry". The American Journal of Medicine. 108 (5): 374–380. doi:10.1016/S0002-9343(00)00310-7.