Temporal Trends and Temperature-Related Incidence of Electrical Storm: The TEMPEST Study (Temperature-Related Incidence of Electrical Storm).
BACKGROUND
The occurrence of ventricular tachyarrhythmias seems to follow circadian, daily, and seasonal distributions. Our aim is to identify potential temporal patterns of electrical storm (ES), in which a cluster of ventricular tachycardias or ventricular fibrillation, negatively affects short- and long-term survival.


RESULTS
The TEMPEST study (Circannual Pattern and Temperature-Related Incidence of Electrical Storm) is a patient-level, pooled analysis of previously published data sets. Study selection criteria included diagnosis of ES, absence of acute coronary syndrome as the arrhythmic trigger, and ≥10 patients included. At the end of the selection and collection processes, 5 centers had the data set from their article pooled into the present registry. Temperature data and sunrise and sunset hours were retrieved from Weather Underground, the largest weather database available online. Total sample included 246 patients presenting with ES (221 men; age: 65±9 years). Each ES episode included a median of 7 ventricular tachycardia/ventricular fibrillation episodes. Fifty-nine percent of patients experienced ES during daytime hours (P<0.001). The prevalence of ES was significantly higher during workdays, with Saturdays and Sundays registering the lowest rates of ES (10.4% and 7.2%, respectively, versus 16.5% daily mean from Monday to Friday;P<0.001). ES occurrence was significantly associated with increased monthly temperature range when compared with the month before (P=0.003).


CONCLUSIONS
ES incidence is not homogenous over time but seems to have a clustered pattern, with a higher incidence during daytime hours and working days. ES is associated with an increase in monthly temperature variation.


BACKGROUND
https://www.crd.york.ac.uk. Unique identifier: CRD42013003744.
From the Cardiology and Arrhythmology Clinic, Marche Polytechnic University, University Hospital "Ospedali Riuniti", Ancona (F.G., P.B., M.F., L.C., F.P., C. Cupido, A.C.); Cardiology Center Monzino IRCCS, Milan, Italy (C. Carbucicchio, S.P., C.T.); University Hospital Clinic of Valencia, Spain (M.I., R.R.-G., A.F.); Medical University of Warsaw, Poland (E.K.); and Cardiac Arrhythmia Center, University of California, Los Angeles (K.S., M.V.). f.guerra@univpm.it.
Federico
F
Guerra
From the Cardiology and Arrhythmology Clinic, Marche Polytechnic University, University Hospital "Ospedali Riuniti", Ancona (F.G., P.B., M.F., L.C., F.P., C. Cupido, A.C.); Cardiology Center Monzino IRCCS, Milan, Italy (C. Carbucicchio, S.P., C.T.); University Hospital Clinic of Valencia, Spain (M.I., R.R.-G., A.F.); Medical University of Warsaw, Poland (E.K.); and Cardiac Arrhythmia Center, University of California, Los Angeles (K.S., M.V.).
Paolo
P
Bonelli
From the Cardiology and Arrhythmology Clinic, Marche Polytechnic University, University Hospital "Ospedali Riuniti", Ancona (F.G., P.B., M.F., L.C., F.P., C. Cupido, A.C.); Cardiology Center Monzino IRCCS, Milan, Italy (C. Carbucicchio, S.P., C.T.); University Hospital Clinic of Valencia, Spain (M.I., R.R.-G., A.F.); Medical University of Warsaw, Poland (E.K.); and Cardiac Arrhythmia Center, University of California, Los Angeles (K.S., M.V.).
Marco
M
Flori
From the Cardiology and Arrhythmology Clinic, Marche Polytechnic University, University Hospital "Ospedali Riuniti", Ancona (F.G., P.B., M.F., L.C., F.P., C. Cupido, A.C.); Cardiology Center Monzino IRCCS, Milan, Italy (C. Carbucicchio, S.P., C.T.); University Hospital Clinic of Valencia, Spain (M.I., R.R.-G., A.F.); Medical University of Warsaw, Poland (E.K.); and Cardiac Arrhythmia Center, University of California, Los Angeles (K.S., M.V.).
Laura
L
Cipolletta
From the Cardiology and Arrhythmology Clinic, Marche Polytechnic University, University Hospital "Ospedali Riuniti", Ancona (F.G., P.B., M.F., L.C., F.P., C. Cupido, A.C.); Cardiology Center Monzino IRCCS, Milan, Italy (C. Carbucicchio, S.P., C.T.); University Hospital Clinic of Valencia, Spain (M.I., R.R.-G., A.F.); Medical University of Warsaw, Poland (E.K.); and Cardiac Arrhythmia Center, University of California, Los Angeles (K.S., M.V.).
Corrado
C
Carbucicchio
From the Cardiology and Arrhythmology Clinic, Marche Polytechnic University, University Hospital "Ospedali Riuniti", Ancona (F.G., P.B., M.F., L.C., F.P., C. Cupido, A.C.); Cardiology Center Monzino IRCCS, Milan, Italy (C. Carbucicchio, S.P., C.T.); University Hospital Clinic of Valencia, Spain (M.I., R.R.-G., A.F.); Medical University of Warsaw, Poland (E.K.); and Cardiac Arrhythmia Center, University of California, Los Angeles (K.S., M.V.).
Maite
M
Izquierdo
From the Cardiology and Arrhythmology Clinic, Marche Polytechnic University, University Hospital "Ospedali Riuniti", Ancona (F.G., P.B., M.F., L.C., F.P., C. Cupido, A.C.); Cardiology Center Monzino IRCCS, Milan, Italy (C. Carbucicchio, S.P., C.T.); University Hospital Clinic of Valencia, Spain (M.I., R.R.-G., A.F.); Medical University of Warsaw, Poland (E.K.); and Cardiac Arrhythmia Center, University of California, Los Angeles (K.S., M.V.).
Edward
E
Kozluk
From the Cardiology and Arrhythmology Clinic, Marche Polytechnic University, University Hospital "Ospedali Riuniti", Ancona (F.G., P.B., M.F., L.C., F.P., C. Cupido, A.C.); Cardiology Center Monzino IRCCS, Milan, Italy (C. Carbucicchio, S.P., C.T.); University Hospital Clinic of Valencia, Spain (M.I., R.R.-G., A.F.); Medical University of Warsaw, Poland (E.K.); and Cardiac Arrhythmia Center, University of California, Los Angeles (K.S., M.V.).
Kalyanam
K
Shivkumar
From the Cardiology and Arrhythmology Clinic, Marche Polytechnic University, University Hospital "Ospedali Riuniti", Ancona (F.G., P.B., M.F., L.C., F.P., C. Cupido, A.C.); Cardiology Center Monzino IRCCS, Milan, Italy (C. Carbucicchio, S.P., C.T.); University Hospital Clinic of Valencia, Spain (M.I., R.R.-G., A.F.); Medical University of Warsaw, Poland (E.K.); and Cardiac Arrhythmia Center, University of California, Los Angeles (K.S., M.V.).
Marmar
M
Vaseghi
From the Cardiology and Arrhythmology Clinic, Marche Polytechnic University, University Hospital "Ospedali Riuniti", Ancona (F.G., P.B., M.F., L.C., F.P., C. Cupido, A.C.); Cardiology Center Monzino IRCCS, Milan, Italy (C. Carbucicchio, S.P., C.T.); University Hospital Clinic of Valencia, Spain (M.I., R.R.-G., A.F.); Medical University of Warsaw, Poland (E.K.); and Cardiac Arrhythmia Center, University of California, Los Angeles (K.S., M.V.).
Francesca
F
Patani
From the Cardiology and Arrhythmology Clinic, Marche Polytechnic University, University Hospital "Ospedali Riuniti", Ancona (F.G., P.B., M.F., L.C., F.P., C. Cupido, A.C.); Cardiology Center Monzino IRCCS, Milan, Italy (C. Carbucicchio, S.P., C.T.); University Hospital Clinic of Valencia, Spain (M.I., R.R.-G., A.F.); Medical University of Warsaw, Poland (E.K.); and Cardiac Arrhythmia Center, University of California, Los Angeles (K.S., M.V.).
Claudio
C
Cupido
From the Cardiology and Arrhythmology Clinic, Marche Polytechnic University, University Hospital "Ospedali Riuniti", Ancona (F.G., P.B., M.F., L.C., F.P., C. Cupido, A.C.); Cardiology Center Monzino IRCCS, Milan, Italy (C. Carbucicchio, S.P., C.T.); University Hospital Clinic of Valencia, Spain (M.I., R.R.-G., A.F.); Medical University of Warsaw, Poland (E.K.); and Cardiac Arrhythmia Center, University of California, Los Angeles (K.S., M.V.).
Salvatore
S
Pala
From the Cardiology and Arrhythmology Clinic, Marche Polytechnic University, University Hospital "Ospedali Riuniti", Ancona (F.G., P.B., M.F., L.C., F.P., C. Cupido, A.C.); Cardiology Center Monzino IRCCS, Milan, Italy (C. Carbucicchio, S.P., C.T.); University Hospital Clinic of Valencia, Spain (M.I., R.R.-G., A.F.); Medical University of Warsaw, Poland (E.K.); and Cardiac Arrhythmia Center, University of California, Los Angeles (K.S., M.V.).
Ricardo
R
Ruiz-Granell
From the Cardiology and Arrhythmology Clinic, Marche Polytechnic University, University Hospital "Ospedali Riuniti", Ancona (F.G., P.B., M.F., L.C., F.P., C. Cupido, A.C.); Cardiology Center Monzino IRCCS, Milan, Italy (C. Carbucicchio, S.P., C.T.); University Hospital Clinic of Valencia, Spain (M.I., R.R.-G., A.F.); Medical University of Warsaw, Poland (E.K.); and Cardiac Arrhythmia Center, University of California, Los Angeles (K.S., M.V.).
Angel
A
Ferrero
From the Cardiology and Arrhythmology Clinic, Marche Polytechnic University, University Hospital "Ospedali Riuniti", Ancona (F.G., P.B., M.F., L.C., F.P., C. Cupido, A.C.); Cardiology Center Monzino IRCCS, Milan, Italy (C. Carbucicchio, S.P., C.T.); University Hospital Clinic of Valencia, Spain (M.I., R.R.-G., A.F.); Medical University of Warsaw, Poland (E.K.); and Cardiac Arrhythmia Center, University of California, Los Angeles (K.S., M.V.).
Claudio
C
Tondo
From the Cardiology and Arrhythmology Clinic, Marche Polytechnic University, University Hospital "Ospedali Riuniti", Ancona (F.G., P.B., M.F., L.C., F.P., C. Cupido, A.C.); Cardiology Center Monzino IRCCS, Milan, Italy (C. Carbucicchio, S.P., C.T.); University Hospital Clinic of Valencia, Spain (M.I., R.R.-G., A.F.); Medical University of Warsaw, Poland (E.K.); and Cardiac Arrhythmia Center, University of California, Los Angeles (K.S., M.V.).
Alessandro
A
Capucci
D000368:Aged; D000889:Anti-Arrhythmia Agents / Q000627:therapeutic use; D002940:Circadian Rhythm; D016000:Cluster Analysis; D015897:Comorbidity; D016208:Databases, Factual; D017147:Defibrillators, Implantable; D004562:Electrocardiography; D005260:Female; D006801:Humans; D015994:Incidence; D008297:Male; D008875:Middle Aged; D011379:Prognosis; D018570:Risk Assessment; D012494:Sampling Studies; D012621:Seasons; D012720:Severity of Illness Index; D015996:Survival Rate; D017180:Tachycardia, Ventricular / Q000175:diagnosis / Q000453:epidemiology* / Q000628:therapy; D013696:Temperature; D014693:Ventricular Fibrillation / Q000175:diagnosis / Q000453:epidemiology* / Q000628:therapy
D000889:Anti-Arrhythmia Agents
Brugada syndrome; arrhythmias, cardiac; catheter ablation; circadian rhythm; prevalence; tachycardia, ventricular; ventricular fibrillation