Accuracy of Uncorrected versus Corrected QT Interval for Prediction of Torsade de Pointes Associated with Intravenous Haloperidol

2007 ◽  
Vol 27 (2) ◽  
pp. 175-182 ◽  
Author(s):  
James E Tisdale ◽  
Richard Kovacs ◽  
Deming Mi ◽  
George P McCabe ◽  
Beth L Cariera ◽  
...  
Keyword(s):  
Qt Interval ◽  
Torsade De Pointes ◽  
Corrected Qt Interval

scholarly journals P-062 Sex differences of corrected QT interval and QT dynamics and torsade de pointes

EP Europace ◽  
2003 ◽  
Vol 4 (Supplement_2) ◽  
pp. B81-B81
Author(s):  
B. Sredniawa ◽  
A. Musialik-Lydka ◽  
P. Jarski ◽  
Z. Kalarus ◽  
L. Polonski
Keyword(s):  
Sex Differences ◽  
Qt Interval ◽  
Torsade De Pointes ◽  
Corrected Qt Interval

scholarly journals Can indicators of myocardial damage predict carbon monoxide poisoning outcomes?

2021 ◽  
Vol 21 (1) ◽  
Author(s):  
Hitoshi Koga ◽  
Hideki Tashiro ◽  
Kouta Mukasa ◽  
Tomohiro Inoue ◽  
Aya Okamoto ◽  
...  
Keyword(s):  
Carbon Monoxide ◽  
Qt Interval ◽  
Troponin I ◽  
Morphological Changes ◽  
Carbon Monoxide Poisoning ◽  
Myocardial Damage ◽  
Qt Dispersion ◽  
Ecg Changes ◽  
Corrected Qt Interval ◽  
Logistic Analysis

Abstract Background Carbon monoxide causes electrical, functional, and morphological changes in the heart. It is unclear, however, whether the indicators of myocardial damage can predict the patient’s prognosis after carbon monoxide poisoning. This retrospective study aimed to investigate the relationship between the carboxyhemoglobin level and electrocardiographic (ECG) changes and whether the ECG changes and troponin I levels are related to the patient’s prognosis after carbon monoxide poisoning. Methods Carboxyhemoglobin, troponin I, and ECG parameters were measured in 70 patients with carbon monoxide poisoning. The QT and RR intervals were measured for each ECG lead in all patients, and the corrected QT interval and corrected QT dispersion were calculated. Results The correlation between the maximum corrected QT interval and the carboxyhemoglobin level was significant (P = 0.0072, R2 = 0.1017), as were the relationships between QT dispersion and carboxyhemoglobin (P < 0.001, R2 = 0.2358) and the corrected QT dispersion and carboxyhemoglobin (P < 0.001, R2 = 0.2613). The multivariate logistic analysis showed that the significant predictors of sequential disability were corrected QT dispersion (P = 0.0042), and troponin I level (P = 0.0021). Conclusions Patients’ prognosis following carbon monoxide poisoning can be predicted based on corrected QT dispersion and the troponin I level. Patients with myocardial damage should be monitored not only for their cardiovascular outcome but also for their neurological outcome and their prognosis.

Electrocardiographic characteristics and associated outcomes in patients with Takotsubo syndrome. Insights from the RETAKO registry

2020 ◽  
Vol 41 (Supplement_2) ◽  
Author(s):  
I Martin-Demiguel ◽  
I Nunez-Gil ◽  
A Perez-Castellanos ◽  
O Vedia ◽  
A Uribarri ◽  
...  
Keyword(s):  
Heart Rate ◽  
Primary Endpoint ◽  
Qt Interval ◽  
Protective Factor ◽  
Independent Predictor ◽  
Prognostic Significance ◽  
Takotsubo Syndrome ◽  
St Segment Elevation ◽  
Corrected Qt Interval ◽  
St Segment

Abstract Background Our aim was to describe the prevalence and prognostic significance of electrocardiographic features in patients with Takotsubo syndrome (TTS). Methods Our data come from the Spanish Multicenter REgistry of TAKOtsubo syndrome (RETAKO). All patients with complete electrocardiogram were included. Results 246 patients were studied, mean age was 71.3±11.5 and 215 (87.4%) were women. ST-segment elevation was seen in 143 patients (59.1%) and was present in ≥2 wall leads in 97 (39.8%). Exclusive elevation in inferior leads was infrequent (5 - 2.0%). After 48 hours, 198 patients (88.0%) developed negative T-waves in a median of 8 leads with a mean amplitude of 0.7±0.5 mV. Mean corrected QT interval was 520±72 ms and it was independently associated with the primary endpoint of all-cause death and nonfatal cardiovascular events (p=0.002) and all-cause death (p=0.008). A higher heart rate at admission was also an independent predictor of the primary endpoint (p=0.001) and of developing acute pulmonary edema (p=0.04). ST-segment elevation with reciprocal depression was an independent predictor of all-cause death (p=0.04). Absence of ST-segment deviation was a protective factor (p=0.005) for the primary endpoint. Arrhythmias were independently associated with cardiogenic shock (p&lt;0.001). Conclusion Prolonged corrected QT interval, arrhythmia, heart rate at admission and broader repolarization alterations are associated with a poor outcome in TTS. Typical ECG at admission and after 48h. Funding Acknowledgement Type of funding source: None

Epicardial activation patterns of torsade de pointes in canine hearts with quinidine-induced long QT interval but without myocardial infarction

1986 ◽  
Vol 111 (6) ◽  
pp. 1080-1087 ◽  
Author(s):  
Hiroshi Inoue ◽  
Yuji Murakawa ◽  
Iku Toda ◽  
Akira Nozaki ◽  
Hiroshi Matsuo ◽  
...  
Keyword(s):  
Myocardial Infarction ◽  
Qt Interval ◽  
Torsade De Pointes ◽  
Long Qt ◽  
Activation Patterns ◽  
Long Qt Interval

The rate-corrected QT interval calculated from 24-hour Holter recordings may serve as a significant arrhythmia risk stratifier in heart failure patients

2011 ◽  
Vol 147 (2) ◽  
pp. 321-323 ◽  
Author(s):  
Petros Arsenos ◽  
Konstantinos A. Gatzoulis ◽  
Polychronis Dilaveris ◽  
Theodoros Gialernios ◽  
Skevos Sideris ◽  
...  
Keyword(s):  
Heart Failure ◽  
Qt Interval ◽  
Heart Failure Patients ◽  
Corrected Qt Interval ◽  
Holter Recordings
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