Reverse Takotsubo cardiomyopathy: a comprehensive review
Review Article

Reverse Takotsubo cardiomyopathy: a comprehensive review

Hamza H. Awad1, Ashley R. McNeal2, Hemant Goyal3

1Department of Community Medicine/Internal Medicine, 2Medical Student, 3Department of Internal Medicine, Mercer University School of Medicine, Macon, GA, USA

Contributions: (I) Conception and design: HH Awad, H Goyal; (II) Administrative support: None; (III) Provision of study materials or patients: HH Awad, AR McNeal; (IV) Collection and assembly of data: HH Awad, AR McNeal; (V) Data analysis and interpretation: All authors; (VI) Manuscript writing: All authors; (VII) Final approval of manuscript: All authors.

Correspondence to: Hemant Goyal, MD, FACP. Assistant Professor of Medicine, Mercer University School of Medicine, Macon, GA 31201, USA. Email:

Abstract: Takotsubo cardiomyopathy (TTC) was first described in Japan in the 1980s. It is described as an acute but often reversible left ventricular (LV) dysfunction mainly triggered by emotional or physical stress. Multiple variants of TTC have been reported including reverse Takotsubo cardiomyopathy (rTTC) which is a variant characterized by the basal akinesis/hypokinesis associated with apical hyperkinesis that resolves spontaneously. The hallmark of rTTC is a clinical presentation similar to an acute coronary syndrome (ACS), with no evident obstructive coronary artery disease. The incidence of TTC is estimated to be 2% of all troponin-positive patients presenting with suspected ACS. The proportion of patients presenting with the rTTC variant out of all TTC patients in published literature has been variable, ranging from 1–23%. Reverse Takotsubo has been associated with younger age, less decrease in left ventricular ejection fraction (LVEF), and more neurological disease compared to the TTC. While the exact mechanism of rTTC is unknown, hypothesized mechanisms include catecholamine cardiotoxicity, coronary artery spasm, coronary microvasculature impairment, and estrogen deficiency. Patients with rTTC typically present with chest pain and/or dyspnea after an emotional or physically stressful event. rTTC can also be triggered by intracranial hemorrhage, general anesthesia, or neurological conditions. Diagnosis of rTTC requires the presence of LV basal hypokinesis/akinesis, new electrocardiogram (EKG) abnormalities or elevated cardiac troponin, and absence of obstructive coronary disease, pheochromocytoma, or myocarditis. Management of rTTC is similar to that of TTC, which is predominantly supportive with the treatment of complications. The recurrence rate of rTTC is around 10%. The most common complications of rTTC include myocarditis, pleural and pericardial effusions, and development of LV thrombi. The best predictors of mortality include decreased LVEF, development of atrial fibrillation, and neurologic disease.

Keywords: Cardiomyopathy; Takotsubo; reverse-Takotsubo; stress; heart failure

Submitted Oct 16, 2018. Accepted for publication Nov 01, 2018.

doi: 10.21037/atm.2018.11.08


History of Takotsubo cardiomyopathy (TTC)

TTC, also known as “stress cardiomyopathy” or “broken heart syndrome,” was first described in 1983 in Japanese females (1). It predominantly occurs in the postmenopausal women and is usually triggered by emotional or physical stress. It is an acute but often reversible left ventricular (LV) dysfunction. TTC has a clinical presentation often resembling acute coronary syndrome (ACS) with no evident obstructive coronary artery disease on angiogram. It is characterized by a transient cardiac apical akinesis/hypokinesis and basal hyperkinesis that resolves spontaneously within a few days or weeks (2). TTC received its name due to the characteristic apical ballooning of the heart giving it a shape similar to a “Takotsubo”, a Japanese pot used to trap an octopus. Several variants of TTC have been described based on the regions of the ventricular wall motion abnormality including the midventricular and basal wall. Reverse Takotsubo cardiomyopathy (rTTC) is a rare variant of TTC which presents with basal ballooning instead of apical ballooning (3). This manuscript aims to perform a comprehensive literature review of epidemiology, pathophysiology, clinical presentation, diagnosis, and treatment of rTTC, and highlight differences with TTC when present.


The incidence of TTC is estimated to be around 2% of all troponin-positive patients presenting with suspected ACS (4,5). However, the reported proportion with the rTTC variant out of all TTC patients in published literature has been variable, ranging from 1–23% (6-8). In a literature review of case reports, the proportion of rTTC in 60 TTC cases was 23.3% (7). In a more extensive study that analyzed records of 1,750 patients from the International Takotsubo Registry showed that only 2.2% of patients had the reversed variant (6). Only 10% of all cases of TTC have been reported in men; the majority of cases are women of postmenopausal age, 65–70 years old (9). While TTC typically presents in postmenopausal women, rTTC has been observed mostly in younger women.


While the exact mechanism of development of this cardiomyopathy is unknown, various theories such as catecholamine cardiotoxicity, coronary artery spasm, coronary microvascular impairment, and estrogen deficiency have been proposed (Table 1).

Table 1
Table 1 Pathophysiological mechanisms of reverse takotsubo cardiomyopathy
Full table

Catecholamine cardiotoxicity

One of the most popular theories for the pathophysiological mechanism in the development of rTTC, and TTC, in general, is the catecholamine-induced cardiotoxicity. In vivo studies in animal models have shown the development of acute reversible apical hypokinesia of the heart after the administration of intraperitoneal or intravenous catecholamines. This is often associated with increased systolic and diastolic blood pressures. Histologically, catecholamine cardiotoxicity in animals presents with myocardial contraction band necrosis, neutrophil infiltration, and fibrosis. The reversible apical hypokinesia has also been induced in rats by exposure to emotional stressors including immobilization possibly due to a regional heterogeneity of catecholamine sensitivity (10). Another suggested mechanism is that epinephrine or norepinephrine bind to B2 receptors on myocardial tissue triggering intracellular signaling from Gs protein to Gi protein coupling which in turn activates protein kinase A via cyclic AMP and produces an increased contractile response (11). Increased cyclic AMP triggers the formation of free radicals initiating the expression of stress response genes and induces apoptosis (12). A retrospective study from Japan on 328 patients with TTC variants and subarachnoid hemorrhage, reported that the patients with rTTC exhibited significantly higher levels of plasma epinephrine in comparison to the patients with TTC. No significant differences were detected in plasma norepinephrine levels (13) (Figure 1).

Figure 1 Proposed mechanism of catecholamine cardiotoxicity. Ne, norepinephrine; Gs, G-stimulatory protein; PK-A, cAMP-dependent protein kinase; SR, sarcoplasmic reticulum.

Coronary artery spasm

The reversible ventricular dysfunction of rTTC is also theorized to be caused by a coronary artery spasm resulting from improper coronary blood flow from a vulnerable plaque rupture. However, it has been argued that ischemic myocardial stunning does not typically produce the histological changes observed in TTC. According to a literature review of 272 TTC case reports, spontaneous coronary arterial spasm was suspected in 1%, but it was never actually observed (14).

Coronary microvascular impairment

Disturbances in the coronary microcirculation have also been proposed as a mechanism for the development of rTTC due to abnormal LV wall motion in the large areas of the myocardium which is dynamic rather than fixed (14). The various disturbances include impaired endothelium-dependent vasodilation, excessive vasoconstriction, and reduced myocardial perfusion (11).

Estrogen deficiency

Since around 90% of TTC patients are postmenopausal women, estrogen deficiency has been suggested as an underlying mechanism (11). Estrogen withdrawal has been associated with the impaired coronary microvascular function. In oophorectomized rats, estrogen replacement diminished inhibitory effects on myocardial contraction induced by high levels of epinephrine. This is suspected to be mediated by an increased activity of the B2 adrenoceptor signaling pathway and decreasing concentration of catecholamines in the plasma. The estrogen receptors which are expressed on the cardiac myocytes can modulate cardiac contractility and regulate calcium uptake (10).

Triggers of rTTC

While up to 30% of all patients with TTC have no clearly identified triggers, a variety of stimuli can precipitate the condition. Emotional and physical stress is the most commonly recognized triggers (15,16). rTTC has also been reported in the patients with various types of life-threatening intracranial hemorrhages including subarachnoid and medullary hemorrhages (13,17,18). Patients have also developed rTTC while under general anesthesia for surgical and dental procedures (19-23). It is not clear if this occurrence is directly related to the use of anesthetic agents or the emotional stress associated with the procedure. Eating disorders and malnutrition have also been correlated with the occurrence of rTTC (24). Development of rTTC has also been associated with neurologic conditions, such as multiple sclerosis and serotonin syndrome (25,26). Additionally, patients have presented with rTTC after administration of exogenous catecholamines which supports the theory of catecholamine-induced myocardial stunning (27-29). The use of amphetamine and methamphetamine has also been recognized as a trigger for rTTC (30,31). Some of the infrequent triggers of rTTC include black widow spider bites, use of the drug yohimbine and consumption of energy drinks (32-34).

Diagnosis of rTTC

TTC often symptomatically mimics ACS or ischemic heart disease. Similarly, rTTC often presents with chest pain, dyspnea, nausea, abdominal pain, diaphoresis, epigastric pain, syncope, or indigestion (35). Electrocardiography changes (T wave inversion, ST-segment elevation, prolonged QT interval, new bundle branch block) and LV wall motion abnormalities (hypokinesis or dyskinesis of LV apex) are often limited to one coronary artery territory. Cardiac troponin level is typically elevated. The typical diagnostic workup, usually due to suspected ACS, includes an electrocardiogram (EKG), blood sample analysis, transthoracic echocardiogram, and coronary angiogram. In addition, ventriculogram and cardiac magnetic resonance imaging (MRI) are sometimes performed. The ultimate diagnosis is typically made with cardiac catheterization during left ventriculography (35).

Clinical presentation of rTTC

Similar to TTC, the patients with rTTC present with chest pain and/or dyspnea preceded by an emotional or physically stressful event with angina-like chest pain. Additional symptoms of rTTC patients include syncope, nausea, abdominal pain, diaphoresis, epigastric pain, and indigestion. These patients also frequently present with mild to moderate congestive heart failure represented by a decreased ejection fraction. They can have hypotension due to reduced stroke volume or LV outflow obstruction. In a study of 1,750 patients from the International Takotsubo Registry, patients with rTTC presented more often with a neurological disorder while patients with TTC presented with an acute psychiatric episode (36). rTTC is typically more likely to be complicated by pulmonary edema and cardiogenic shock (13,16,37).

Diagnostic work-up of rTTC

Diagnostic criteria are shared between TTC and rTTC with the difference being in the region of the myocardium affected. Mayo clinic published the revised rTTC diagnosis criteria in 2008 (38,39). These criteria define rTTC as an acute event characterized by all the following: (I) transient abnormal wall-motion in the form of hypokinesis, akinesis, or dyskinesis of the LV basal segments, with the regional affected extending beyond a single epicardial vascular distribution; (II) no detectable obstructive coronary disease or angiographic evidence of acute atheromatous plaque rupture; (III) newly developed ECG abnormalities or elevation in cardiac troponin levels; and (IV) absence of myocarditis or pheochromocytoma (38).

To support these criteria, Eitel et al. performed a prospective study on 256 TTC patients at seven tertiary care centers in Europe and North America over a 5-year period. All patients underwent cardiac catheterization, and unobstructed coronary arteries were seen in about 75% of patients (8).

EKG abnormalities of rTTC

The rTTC and TTC patients often present with EKG abnormalities. The most common reported EKG abnormality is ST-segment elevations mimicking ST-elevation myocardial infarction (STEMI) presentation (40). However, significant variation in the occurrence of this finding is reported in the published literature which could be due to several factors: the transient elevations and selection bias for STEMI to receive immediate coronary angiography. The ST segment elevation is usually seen in the precordial leads, but it can also be seen in the inferior or lateral leads as well which typically resolves within 2 to 3 days after the event. Other types of ECG abnormalities seen in rTTC include T wave inversion, new bundle branch blocks, and prolonged QT interval. T wave inversion and QT prolongation on average resolves over 3 to 4 months (39). In the International Takotsubo Registry study, patients with typical TTC presented more often with ST-segment elevation, atrial fibrillation, and T-wave inversion. Patients with rTTC presented more frequently with ST-segment depression and longer QTc duration (36).

Laboratory analysis

Most patients with rTTC present with a modest rise in cardiac troponin levels that peak within 24 hours. Circulating brain natriuretic peptide (BNP) is also typically elevated as a marker of ventricular dysfunction and is correlated with LV end-diastolic pressure (39). In the International Takotsubo Registry, upon admission, TTC patients were found to have higher levels of BNP and c-reactive protein than patients with rTTC (36).

Coronary angiogram

Coronary angiograms can detect atherosclerosis and cardiac wall motion abnormalities. In rTTC patients, the coronary arteries are typically normal or have mild atherosclerosis. In rTTC patients, wall motion abnormality includes hypokinesis/akinesis of the basal segment of the left ventricle. While in TTC, the wall motion abnormality is hypokinesis or akinesis of the apical and mid segments of the left ventricle with sparing of basal systolic function. Right ventricle can have similar motion abnormality in patients who tend to be sicker and at higher risk of developing congestive heart failure (39).

Cardiac MRI

The use of Cardiac MRI in the diagnosis of rTTC quantifies LV and right ventricular (RV) function, gives an accurate visualization of regional wall motion abnormalities, and possible abnormalities/complications (i.e., pericardial effusion, pleural effusion, LV and RV thrombi). Cardiac MRI differentiates reversible injury (inflammation, ischemic edema) and irreversible injury (necrosis, fibrosis), using delayed gadolinium hyperenhancement, to exclude the differential diagnoses of myocardial infarction and myocarditis (8,39,41).

Ejection fraction

On average, TTC patients appear to present with lower left ventricular ejection fraction (LVEF) in comparison to rTTC patients. In a systematic review of 136 TTC patients, Sharkey et al. analyzed the normalization of LVEF over time with a transthoracic echocardiogram. Upon admission, the average LVEF for patients was found to range from 15% to 55%. One hundred thirty-one patients followed up (in the hospital after three days or after discharge at 51 to 52 days) to monitor the LVEF; 126 of these patients eventually returned to normal or greater than or equal to 50%. Only six patients took 2.5 to 12 months until their LVEF normalized (42). In the International Takotsubo Registry study, upon admission, patients with TTC had a lower LVEF (mean, 41%) than rTTC patients (mean, 43%) (36).

Management of rTTC

According to the American College of Cardiology (ACC) and the European Society of Cardiology, management of rTTC is predominantly supportive with the management of complications (35,43). The treatment guidelines for rTTC are similar to those of TTC except for circumstances when the reversed anatomy is significant. Immediate aggressive pharmacologic and hemodynamic supports rapidly reversed LV function and survival. Due to an initial presentation that mimics ACS, patients are generally acutely treated according to the guidelines or ACS management.

For rTTC patients with dynamic LV obstruction, beta blockers can be cautiously given to reduce the contractility of the myocardial segment affected. In this case, inotropes are contraindicated (35). If the patient presents with low blood pressure secondary to cardiogenic shock, vasopressor agents, including dobutamine and dopamine, are indicated; intra-aortic balloon counterpulsation may also be needed for mechanical and hemodynamic support for 1 to 2 days (44). Intracavity thrombus formation can occur due to the akinetic ventricular segments. Suspicion of thrombus formation in the akinetic basal segment should be treated with prophylactic anticoagulation, such as warfarin, for at least three months regardless of the heart rhythm (5). In patients with symptomatic hypotension without outflow tract obstruction, catecholamines can be given (35). Pulmonary edema is treated with upright posture, oxygen, and diuretics; however, sedation and morphine can also be used (45).

While arrhythmia from QT prolongation is common in rTTC, antiarrhythmics are generally not given prophylactically. Magnesium sulfate can be given for ventricular tachycardia with prolonged QT interval in the acute phase of rTTC.

Multiple new treatments for management of TTC and rTTC are under investigation. In an animal model, estrogen treatment has been beneficial in preventing the condition, however, clinical trials of the administration of estrogen in patients have not been performed (14). The role of the routine use of adenosine and endothelin antagonist for management of TTC in general needs to be further investigated. Long-term therapy with beta-blockers has been hypothesized to reduce the likelihood of recurrence. However, more research needs to be done to support this theory (5).

Prognosis of rTTC

The recurrence rate and outcomes of rTTC have been found to be very similar to those of TTC (36). In a study of 100 TTC patients, over a 4-year follow up, TTC recurred in a total 10% of patients. This study estimates a 2.9% recurrence rate in the first 4 years after the initial event and a recurrence rate of 1.3% (46) per year for subsequent follow ups. The most common complications associated with rTTC include myocardial inflammation, pleural effusion, pericardial effusion, and LV thrombi. No significant difference in the mortality was found between the TTC patients and the controls (46). The best predictors of 1-year mortality were unrelated to the variant of TTC. Instead, LVEF less than 45%, atrial fibrillation, and neurologic disease were significantly associated with increased risk of 1-year mortality (36).




Conflicts of Interest: The authors have no conflicts of interest to declare.


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Cite this article as: Awad HH, McNeal AR, Goyal H. Reverse Takotsubo cardiomyopathy: a comprehensive review. Ann Transl Med 2018;6(23):460. doi: 10.21037/atm.2018.11.08

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