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Letter to the Editor
Tako-tsubo syndrome in patients with ANCA vasculitis
Síndrome de tako-tsubo en pacientes con vasculitis ANCA
María Martínez-Urbistondoa,
Corresponding author
mmurbistondo@gmail.com

Corresponding author.
, Sonia García-Prietoa, Víctor Moreno-Torresa,b
a Hospital Universitario Puerta de Hierro Majadahonda, Majadahonda, Madrid, Spain
b UNIR Health Sciences School and Medical Center, Madrid, Spain
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    "textoCompleto" => "<span class="elsevierStyleSections"><p id="par0005" class="elsevierStylePara elsevierViewall">Tako-tsubo syndrome is a transient cardiac dysfunction whofse association with systemic autoimmune diseases is rare&#46; We report 2 cases of vasculitis associated with MPO anti-neutrophil cytoplasmic antibodies &#40;ANCA&#41; in this context&#46;</p><p id="par0010" class="elsevierStylePara elsevierViewall">First&#44; a 67-year-old woman diagnosed with high blood pressure&#46; The patient went to the emergency department complaining of a 2-month history of fever and weight loss&#46; On physical examination&#44; she was haemodynamically stable and had bilateral pitting oedema&#46; The baseline electrocardiogram &#40;ECG&#41; and chest X-ray were unremarkable&#46; Laboratory tests showed creatinine 2&#46;15<span class="elsevierStyleHsp" style=""></span>mg&#47;dl&#44; urea 104<span class="elsevierStyleHsp" style=""></span>mg&#47;dl&#44; C-reactive protein 80&#46;1<span class="elsevierStyleHsp" style=""></span>mg&#47;l&#44; microcytic anaemia &#40;haemoglobin 6&#46;2<span class="elsevierStyleHsp" style=""></span>mg&#47;dl&#59; mean corpuscular volume &#91;MCV&#93; 72&#46;4<span class="elsevierStyleHsp" style=""></span>fl&#59; 400&#46; 000 reticulocytes&#47;&#956;l&#59; 763&#44;000 platelets&#47;&#956;l and complement consumption &#40;C3 82<span class="elsevierStyleHsp" style=""></span>mg&#47;dl&#44; C4 25<span class="elsevierStyleHsp" style=""></span>mg&#47;dl&#41;&#46; Prior to admission&#44; 2 units of packed red blood cells were transfused&#46;</p><p id="par0015" class="elsevierStylePara elsevierViewall">After 36<span class="elsevierStyleHsp" style=""></span>h&#44; she developed acute dyspnoea&#44; desaturation and oppressive chest pain&#46; The ECG documented T-wave inversion in the inferior and anterolateral aspect&#44; and the echocardiogram detected a left ventricular ejection fraction &#40;LVEF&#41; of 30&#37;&#44; with septal&#44; mid anterior and apical akinesia&#44; as well as hypercontractility of the basal segments and B-lines in all lung fields&#46; Troponin levels were 673<span class="elsevierStyleHsp" style=""></span>ng&#47;l&#46; Diuretic treatment was started with good response and catheterisation ruled out lesions&#46; An MRI scan was not possible due to the clinical situation&#46;</p><p id="par0020" class="elsevierStylePara elsevierViewall">The MPO-specific ANCA test was positive &#40;127<span class="elsevierStyleHsp" style=""></span>U&#59; reference value<span class="elsevierStyleHsp" style=""></span>&#62;<span class="elsevierStyleHsp" style=""></span>5<span class="elsevierStyleHsp" style=""></span>U&#41; and a renal biopsy was performed&#44; compatible with pauci-immune extracapillary proliferative glomerulonephritis&#46; She received treatment with glucocorticoids in combination with rituximab&#44; with a favourable clinical&#44; laboratory and echocardiographic outcome&#46;</p><p id="par0025" class="elsevierStylePara elsevierViewall">The second case was a 72-year-old woman with previous diagnoses of hypercholesterolemia and primary hypothyroidism&#46; She came to the emergency department with a 2-month history of fever&#44; despite antibiotic treatment&#44; and a weight loss of 5<span class="elsevierStyleHsp" style=""></span>kg&#46;</p><p id="par0030" class="elsevierStylePara elsevierViewall">On physical examination&#44; vital signs were normal and bilateral dry crackles were heard&#46; Laboratory tests showed a C-reactive protein &#62;250<span class="elsevierStyleHsp" style=""></span>mg&#47;l&#44; a glomerular sedimentation rate of 94<span class="elsevierStyleHsp" style=""></span>mm and a leucocyte count of 20&#44;430&#47;&#956;l with 17&#44;600&#47;&#956;l neutrophils&#44; and bibasilar interstitial infiltrates on radiological examination&#46; She was admitted with broad-spectrum antibiotic treatment&#44; persisted febrile without microbiological isolations and developed acute renal failure &#40;maximum creatinine of 2&#46;28<span class="elsevierStyleHsp" style=""></span>mg&#47;dl&#41;&#44; normocytic anaemia &#40;haemoglobin of 7&#46;9<span class="elsevierStyleHsp" style=""></span>mg&#47;dl&#44; MCV of 84&#46;3<span class="elsevierStyleHsp" style=""></span>fl&#41; and progressive thrombocytosis &#40;maximum of 832&#44;000&#47;&#956;l&#41;&#46; The laboratory study showed positive MPO-ANCA results at &#62;134<span class="elsevierStyleHsp" style=""></span>U titres&#46; In addition&#44; chest CT scan showed areas of ground glass over a fibrosing pattern&#44; bronchoalveolar lavage showed inflammatory features &#40;predominantly macrophages&#41; and positron emission tomography showed extensive bilateral pulmonary and renal pathological uptake&#46; Renal biopsy revealed evidence of necrotising vasculitis with glomerular involvement and tubulointerstitial nephritis&#46; She was initially treated with glucocorticoids&#46; Rituximab was later added&#46;</p><p id="par0035" class="elsevierStylePara elsevierViewall">One month later&#44; she presented with a sudden onset of dyspnoea with radiological findings suggestive of acute pulmonary oedema&#46; The echocardiogram showed acute mitral regurgitation and severe systolic dysfunction &#40;LVEF 31&#37;&#41;&#44; compatible with reverse tako-tsubo syndrome&#44; with no abnormalities on catheterisation&#46; The maximum troponin levels achieved were 701<span class="elsevierStyleHsp" style=""></span>ng&#47;l&#46; Haemodynamic instability&#44; as well as possible renal toxicity&#44; prevented the performance of an MRI&#46; She required diuretic treatment&#44; with clinical and echocardiographic resolution&#46;</p><p id="par0040" class="elsevierStylePara elsevierViewall">The most common cardiac complications of ANCA vasculitis are coronary arteritis&#44; pericarditis and arrhythmias&#44;<a class="elsevierStyleCrossRef" href="#bib0005"><span class="elsevierStyleSup">1</span></a> the vast majority of which have a poor short-term prognosis&#46;<a class="elsevierStyleCrossRef" href="#bib0010"><span class="elsevierStyleSup">2</span></a> However&#44; its association with tako-tsubo syndrome has previously been described in only 3 cases<a class="elsevierStyleCrossRefs" href="#bib0015"><span class="elsevierStyleSup">3&#44;4</span></a> &#40;according to a literature search including all studies registered in the PubMed platform under the key terms &#34;ANCA vasculitis&#34; and &#34;tako-tsubo&#34;&#41;&#44; all in women over 65 years of age and with elevated MPO-ANCA titres&#44; following immunosuppressive treatment in the context of a disease flare&#46; Several pathophysiological hypotheses have been proposed&#58; the anabolic steroid effect itself&#44; the presence of severe organ damage at another level or coronary microvascular inflammation&#46;<a class="elsevierStyleCrossRef" href="#bib0025"><span class="elsevierStyleSup">5</span></a> The broad differential diagnosis in ANCA vasculitis may explain some under-diagnosis&#46; Its early detection in patients with risk factors would imply an early establishment of therapeutic measures and a better prognosis&#46;</p><span id="sec0005" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0005">Ethical considerations</span><p id="par0045" class="elsevierStylePara elsevierViewall">All patients included provided informed consent&#46;</p></span><span id="sec0010" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0010">Funding</span><p id="par0050" class="elsevierStylePara elsevierViewall">No funding was required for the preparation of this publication&#46;</p></span><span id="sec0015" class="elsevierStyleSection elsevierViewall"><span class="elsevierStyleSectionTitle" id="sect0015">Conflict of interest</span><p id="par0055" class="elsevierStylePara elsevierViewall">The authors declare that they have no conflict of interest in connection with this letter to the editor&#46;</p></span></span>"
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ISSN: 23870206
Original language: English
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