Tako-Tsubo cardiomyopathy (apical ballooning) with parvovirus B19 genome in endomyocardial biopsy

Infections precipitating Takotsubo cardiomyopathy, an uncommon complication of a common infection

Takotsubo cardiomyopathy (TTC) is a non-ischemic cardiomyopathy precipitated by stress. Various infections are reported to precipitate this form of cardiomyopathy. We report a patient presenting with TTC secondary to influenza.  In this article, we also discuss the various infections reported to precipitate this form of reversible cardiomyopathy in literature. We have also included the recent reports of TTC among patients with COVID-19.

Takotsubo Syndrome Associated with COVID-19

Objective

The availability of public health information for optimised supportive care is critical during the COVID-19 pandemic. We describe the first case of COVID-19 complicated by Takotsubo cardiomyopathy.

Materials and Methods

We report the clinical, laboratory and radiological findings of a patient with severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2).

Results

The nasopharyngeal swab was positive for SARS-CoV-2 and x-ray images demonstrated pathognomonic pneumonia. The patient developed tachycardia and the echocardiogram confirmed the diagnosis of Takotsubo cardiomyopathy.

Conclusions

Doctors should be aware of the need to thoroughly study this new infection in order to understand its underlying mechanisms and related complications.

LEARNING POINTS

Cerebral infarction as initial presentation in stress cardiomyopathy: Case report and literature review

RATIONALE

The typical symptoms of stress cardiomyopathy include sudden-onset chest pain and breathlessness or collapse as well as classical symptoms of cardiovascular disease; however, rare reports have described nervous system symptoms as the initial manifestation. Here, we report the case of a young man who presented with a large cerebral infarction as the main clinical symptom of stress cardiomyopathy to increase recognition of the disease.

PATIENT CONCERNS

A 28-year-old man was admitted to our hospital for sudden-onset weakness of the right limbs and unconsciousness for 1 day. Ten days prior, he began consuming copious amounts of alcohol (500 mL/day) secondary to reactive depression.

DIAGNOSES

Imaging revealed a left internal carotid artery occlusion as assessed by carotid artery ultrasonography. Brain magnetic resonance imaging/magnetic resonance angiography showed new large left cerebral infarction complicated by a reperfusion injury. Moreover, cardiac ultrasonography showed decreased motion of the left ventricular apex, a 3.7 cm mural thrombus in the ventricular apex. The results of coronary and renal artery angiography did not reveal any significant epicardial coronary disease with thrombolysis in the myocardial infarction grade 3 in any of the coronary arteries.

INTERVENTIONS

The patient was administered antiplatelet, anticoagulation, antihypertension, antibiotic, and neurotrophic therapies.

OUTCOMES

The symptoms of cerebral infarction improved significantly after 12 days of admission. Cardiac ultrasonography showed that the wall movement of the left ventricular apex had recovered fully and the mural thrombus resolved completely.

LESSONS

Patients with stress cardiomyopathy exhibit various clinical manifestations and characteristics. On the basis of our in-depth understanding of stress cardiomyopathy, clinicians should diagnose early and develop reasonable and effective therapies to prevent the harmful effects of related complications.

Pericarditis in takotsubo cardiomyopathy: a case report and review of the literature

Case. A 64-year-old Caucasian woman was brought to the emergency department with severe dysphagia and left chest pain for last 4 days. Initial evaluation revealed elevated ST segment in precordial leads on EKG with elevated cardiac enzymes. Limited echocardiogram showed infra-apical wall hypokinesia. Cardiac angiography was done subsequently which showed nonflow limiting mild coronary artery disease. Takotsubo cardiomyopathy was diagnosed and she was treated medically. On the third day of admission, a repeat ECG showed diffuse convex ST-segment elevations in precordial leads, compatible with acute pericarditis pattern of EKG. Decision was made to start colchicine empirically for possible pericarditis. Follow-up EKG in 2 days showed decreased ST-segment elevations in precordial leads. The patient was discharged with colchicine and a follow-up echocardiogram in 4 weeks demonstrated a normal ejection fraction with no evidence of pericarditis. Conclusion. Acute pericarditis can be associated either as a consequence of or as a triggering factor for Takotsubo cardiomyopathy. It is vital for physicians to be aware of pericarditis as a potential complication of Takotsubo cardiomyopathy.

[Historical and current pathophysiological concepts of stress (Tako-Tsubo) cardiomyopathy]

Tako-Tsubo cardiomyopathy (TTC), also referred to as stress cardiomyopathy (SCM), was first described in the 1990s and is characterized by transient left ventricular dysfunction. Its incidence represents 1-2% of all acute coronary syndromes (ACS). In most cases extreme emotional or physical stress precedes this syndrome. The majority of patients affected are postmenopausal women. Since its first description, various hypotheses regarding the pathophysiology of TTC have been discussed. From a historical perspective, coronary vasospasm has often been proposed as a possible cause of this disorder. However, reviews from numerous registries were able to demonstrate that coronary vasospasm plays only a minor role in the pathogenesis of TTC. Several groups showed disturbances in myocardial microcirculation and energy metabolism in the acute phase of TTC. Nevertheless, with regard to the data currently available, it cannot be differentiated whether these changes are the cause or rather the result of TTC. However, recent concepts include an excessive catecholamine overload and morphological changes which are unequivocally documented in TTC. The relation between elevated catecholamine levels and myocardial dysfunction analogous to TTC could be confirmed in animal experiments.In summary, it can be assumed that TTC is caused by an excessive cardiotoxic release of catecholamines. Ventricular dysfunction can be explained by increased numbers of β-adrenergic receptors in the apex, leading to greater vulnerability to catecholamine overload. Individual anatomical differences in the sympathoadrenergic system and distribution from β-adrenergic receptors are presumably responsible for the interindividual occurrence of wall motion abnormalities in TTC.

Takotsubo cardiomyopathy--a clinical review

Stress cardiomyopathy is characterised by reversible left ventricular dysfunction. It simulates an acute coronary syndrome (ACS), presenting with precordial pain or dyspnoea, changes of the ST segment, T wave, or QTc interval on electrocardiogram, and raised cardiac enzymes. Typical findings are disturbances of segmental contractility (apical hypokinesia or akinesia), with normal epicardial coronary arteries. The true prevalence is unknown, as the syndrome may be under-diagnosed; it is more common in postmenopausal women. There is usually a trigger in the form of physical or psychological stress. The electrocardiographic, echocardiographic, and ventriculographic changes resolve spontaneously over a variable period of time (from days to months). There are a number of pathophysiological theories, none of which has been shown to be definitive, suggesting that all of them may be involved to some extent. The prognosis is generally favourable, and recurrence is very rare.

Takotsubo cardiomyopathy in acute coronary syndrome; clinical features and contribution of cardiac magnetic resonance during the acute and convalescent phase

OBJECTIVES

Takotsubo cardiomyopathy (TTC) is a diagnostic entity that is increasingly being recognized. Data from cardiac magnetic resonance (CMR) imaging and its impact on differential diagnosis are limited.

METHODS AND RESULTS

After 26 months, coronary angiography revealed normal coronary arteries and left ventriculography and/or echocardiography left ventricular dysfunction with apical ballooning in 20 patients with acute coronary syndrome (ACS). Four patients were excluded from CMR and in three patients an alternative diagnosis was revealed. Thirteen patients (all female; 60 ± 8 years) with TTC underwent a multisequential CMR, in which all showed myocardial oedema with an elevated T2 ratio in the apical region (2.4 ± 0.4; p < 0.001 vs. healthy controls), and five patients an elevated global relative enhancement (gRE; 3.7 ± 1.4; p < 0.05 vs. healthy controls). No late gadolinium enhancement (LGE) was detected on CMR. Follow-up after 132 ± 33 days showed a normalized left ventricular ejection fraction, myocardial mass, T2 ratio, and gRE in all patients.

CONCLUSIONS

TTC is a small but definite group among patients with ACS and normal coronary arteries. CMR allows differentiating TTC from other causes such as myocarditis and cardiomyopathies, as well as to identify the transient increase of myocardial mass and resolution of myocardial oedema as the systolic dysfunction improves. Therefore, CMR might add valuable information for the differential diagnoses and therapeutic decision-making in patients with suspected TTC.

Takotsubo cardiomyopathy--the current state of knowledge

Takotsubo cardiomyopathy is defined as acute chest pain during stressful incidents which is associated with ST-segment abnormalities and/or increased serum troponin levels. There is also regressive systolic dysfunction which is usually localized in the apical and medial left ventricles but there are no significant coronary artery lesions. The ventricular asynergy is also described in the right ventricle but is less common. Almost all the patients are women. The onset of this disease is typically triggered by an acute emotional or stress event or by an accumulation of trivial and repetitive stresses. The etiology of this syndrome remains unclear. Myocardial ischemia and reperfusion due to microvascular spasm, aborted myocardial infarction and related no-reflow phenomenon have been proposed as inducers of Takotsubo cardiomyopathy. The temporal relationship between the stressful event and the triggering of the clinical syndrome as well as the report of elevated catecholamine plasma levels during the acute phase suggest a possible involvement of the sympathetic nervous system. A smaller left ventricular size and hormonal disturbances in women may also play a role.

Reversible coronary microvascular dysfunction: a common pathogenetic mechanism in Apical Ballooning or Tako-Tsubo Syndrome

AIMS

To study coronary microvascular dysfunction as possible pathogenetic mechanism in Apical Ballooning Syndrome (ABS).

METHODS AND RESULTS

Fifteen ABS patients (all women, 68 +/- 14 years) underwent myocardial contrast echocardiography at baseline during adenosine infusion (140 microg/kg/min) and at 1-month follow-up and compared with a group of anterior ST-elevation myocardial infarction (STEMI) patients with similar clinical characteristics. Myocardial perfusion was assessed by contrast score index (CSI) and endocardial length of contrast defect (contrast defect length, CDL), whereas myocardial dysfunction by wall motion score index (WMSI), endocardial length of contractile dysfunction (wall motion defect length, WMDL), and LV ejection fraction (LVEF). At baseline, no difference in myocardial perfusion and dysfunction were present between the two groups. During adenosine challenge, while no changes were observed in STEMI group, in ABS patients CSI, CDL, WMSI, and WMDL significantly decreased compared with baseline (P < 0.001 vs. baseline for all parameters) and LVEF significantly increased (P = 0.01 vs. baseline). At 1-month follow-up, myocardial perfusion and dysfunction completely recovered in ABS patients (P < 0.001 vs. baseline for all parameters), whereas no significant changes were observed in STEMI group.

CONCLUSION

Our data strongly suggest that in ABS, irrespectively of its underlying aetiology, acute and reversible coronary microvascular vasoconstriction could represent a common pathophysiological mechanism.

Inflammation in takotsubo cardiomyopathy: insights from cardiovascular magnetic resonance imaging

OBJECTIVE

Takotsubo cardiomyopathy (TTC) is an increasingly recognised acute cardiac syndrome, whose underlying pathophysiological mechanisms remain unknown. Inflammation might play a role as this has been shown in endomyocardial biopsies. The aim of this study was to assess inflammatory parameters in patients with TTC using a comprehensive cardiovascular magnetic resonance imaging (CMR) approach.

METHODS

Thirty-seven patients with the suspected diagnosis of TTC underwent CMR. T2-weighted imaging to calculate the oedema ratio, T1-weighted imaging before and after contrast agent administration to calculate the global relative enhancement (gRE), and late gadolinium enhancement (LGE) imaging were performed.

RESULTS

In 11 patients CMR revealed the diagnosis of myocardial infarction (n = 7; 19%) or myocarditis (n = 4; 11%) with typical patterns of LGE. In all other patients (n = 26; 70%), no LGE was detected consistent with the diagnosis of TTC. Of these, in 16 patients (62%) both inflammatory markers (oedema ratio and gRE) were elevated with concomitant pericardial effusion, indicating acute inflammation. Follow-up CMR after 3 months showed complete normalisation of left ventricular function and inflammatory parameters in the absence of LGE and pericardial effusion.

CONCLUSION

This CMR study provides further insights into the pathophysiological mechanisms in TTC, supporting the contribution of an inflammatory process in the acute setting.

Transient apical ballooning syndrome--clinical characteristics, ballooning pattern, and long-term follow-up in a Swiss population

BACKGROUND

Transient apical ballooning syndrome (TABS) or Takotsubo cardiomyopathy mimics acute ST-elevation myocardial infarction, but is considered to have a good prognosis with only moderate elevation of myocardial enzymes and full recovery of left ventricular function. Although it is increasingly reported, its exact incidence, clinical presentation, and prognosis in non-Asian populations remain largely unknown.

OBJECTIVE

To describe the clinical characteristics and long-term follow-up of patients who presented with TABS at our institution over a 3 year-period.

METHODS

Patients were retrospectively retrieved from our local database. Patient charts were carefully reviewed and the diagnosis of TABS was based on the Mayo Clinic diagnostic criteria. Moreover, psychosocial stress or gastrointestinal disease was recorded.

RESULTS

During the study period, 13,715 coronary angiographies were performed at our institution, including 2459 patients presenting with an acute coronary syndrome (ACS). Forty-one TABS were diagnosed, which represents an incidence of 1.7% of ACS-patients and 0.3% of all coronary angiographies performed, respectively. Mean age was 65 years, with 85% women. Clinical presentations included chest pain, dyspnoea, and cardiogenic shock. A preceding psychological or physical condition perceived as "stress" was reported in 61%. At a mean follow-up of 675+/-288 days, none of the patients died of cardiac causes, but two patients had a recurrence of symptoms.

CONCLUSIONS

This is the largest cohort of TABS patients reported out of Europe so far. The good overall prognosis and low likelihood of recurrence were confirmed.

Takotsubo cardiomyopathy or transient left ventricular apical ballooning syndrome: A systematic review

BACKGROUND

Transient left ventricular apical ballooning syndrome (TLVABS) is an acute cardiac syndrome mimicking ST-segment elevation myocardial infarction characterized by transient wall-motion abnormalities involving apical and mid-portions of the left ventricle in the absence of significant obstructive coronary disease.

METHODS

Searching the MEDLINE database 28 case series met the eligibility criteria and were summarized in a narrative synthesis of the demographic characteristics, clinical features and pathophysiological mechanisms.

RESULTS

TLVABS is observed in 0.7-2.5% of patients with suspected ACS, affects women in 90.7% (95% CI: 88.2-93.2%) with a mean age ranging from 62 to 76 years and most commonly presents with chest pain (83.4%, 95% CI: 80.0-86.7%) and dyspnea (20.4%, 95% CI: 16.3-24.5%) following an emotionally or physically stressful event. ECG on admission shows ST-segment elevations in 71.1% (95% CI: 67.2-75.1%) and is accompanied by usually mild elevations of Troponins in 85.0% (95% CI: 80.8-89.1%). Despite dramatic clinical presentation and substantial risk of heart failure, cardiogenic shock and arrhythmias, LVEF improved from 20-49.9% to 59-76% within a mean time of 7-37 days with an in-hospital mortality rate of 1.7% (95% CI: 0.5-2.8%), complete recovery in 95.9% (95% CI: 93.8-98.1%) and rare recurrence. The underlying etiology is thought to be based on an exaggerated sympathetic stimulation.

CONCLUSION

TLVABS is a considerable differential diagnosis in ACS, especially in postmenopausal women with a preceding stressful event. Data on longterm follow-up is pending and further studies will be necessary to clarify the etiology and reach consensus in acute and longterm management of TLVABS.