The patient experienced a ventricular tachycardia leading to cardiac arrest and was found to have a prolonged QT interval. Although citalopram is eliminated more slowly in patients with mild to moderate renal impairment a dose adjustment is not necessary. However, no information is available on treatment of patients with severely reduced renal function and prescribers are advised to use caution. Hydroxychloroquine mechanism rheumatoid arthritis Chloroquine phosphate administration Cardiac Effects, including Cardiomyopathy and QT prolongation Postmarketing cases of life-threatening and fatal cardiomyopathy have been reported with use of PLAQUENIL as well as with use of. Cases of QT prolongation and ventricular arrhythmia, including Torsade de Pointes TdP, have been reported via the Yellow Card Scheme with citalopram and escitalopram, mainly in women, those with hypokalaemia, or in those with pre-existing QT prolongation or other cardiac diseases. QT prolongation is an extended corrected QT QTc interval seen on an ECG at rest. 2 Because the QT interval is dependent on heart rate, the QTc interval is calculated to control for this factor. 2 QTc can be calculated by a variety of methods. 3 Definitions of QTc prolongation vary, but often this condition is described as a QTc interval of 440 ms. 2 Other definitions allow for a higher cutoff, such as 460 ms, in females. 3 QT prolongation is a measure of delayed ventricular repolarisation, which can cause Torsades de Pointes, ventricular tachycardia, and sudden death. In elderly patients, patients with reduced hepatic function, patients who are CYP2C19 poor metabolisers, and patients taking CYPC19 inhibitors (eg, cimetidine and omeprazole), the maximum dose should not exceed 20 mg a day because these factors lead to increased blood levels of citalopram. Plaquenil and citalopram qt prolongation Citalopram Disease Interactions -, Citalopram and escitalopram QT interval prolongation - GOV. UK Benlysta vs plaquenilPlaquenil and hpvPlaquenil making hair fall out WebMD provides information about interactions between Citalopram Oral and qt-prolonging-agents-hydroxyzine. Interactions between Citalopram Oral and qt-prolonging-agents.. QTc Prolongation With Antidepressants and Antipsychotics. Citalopram and QT interval Prescribing Advice for GPs. For citalopram doses of 40 mg/day, prolongation of the corrected QTc interval was estimated to be 12.6 ms. 5 For reference, increases in QTc to ≥ 500 ms or a drug -induced increase from baseline of ≥ 60 ms would represent significant changes in clinical trials. Summary Long qt syndrome is found among people who take Plaquenil, especially for people who are female, 60+ old also take medication Quinine, and have Muscle spasms. This study is created by eHealthMe based on reports of 48,911 people who have side effects when taking Plaquenil from Food and Drug Administration FDA. Core tip Long QT syndrome is a cardiac conduction disorder characterized by prolongation and increased dispersion of ventricular repolarization, manifested by lengthening of the QT interval on the surface electrocardiography. This review furnishes important key points for preoperative optimization, intraoperative anesthetic agents and postoperative care in order to fill the lack of definitive.