Related Experiment Video
Updated: Apr 17, 2026

07:15
Determining the Likelihood of Variant Pathogenicity Using Amino Acid-level Signal-to-Noise Analysis of Genetic Variation
Published on: January 16, 2019
11.5K
Drug-induced long-QT syndrome: a case report.
Summary
This study highlights how adjusting psychiatric medications and reducing other drugs can improve gastrointestinal issues and correct long QT syndrome in elderly patients with resistant depression.
Area of Science:
- Psychiatry
- Cardiology
- Clinical Pharmacology
Background:
- Elderly patients with severe resistant depression may present with complex medical issues.
- Gastrointestinal complaints can be a symptom of underlying medication-related problems.
- Prolonged QT interval is a serious cardiac risk associated with certain psychiatric drugs.
Purpose of the Study:
- To investigate the link between psychiatric medication, gastrointestinal symptoms, and cardiac abnormalities in an elderly patient.
- To evaluate the impact of medication adjustment on patient outcomes.
Main Methods:
- Case report of an elderly female patient with resistant depression.
- Medical examination including ECG and biochemical tests.
- Modification of psychiatric drug treatment and reduction of concomitant medications.
Main Results:
- The patient presented with gastrointestinal complaints and a significantly prolonged QT interval.
- ECG and biochemical abnormalities improved after medication changes.
- Gastrointestinal symptoms resolved following the treatment adjustment.
Conclusions:
- Psychiatric medication management is crucial in elderly patients, even for non-psychiatric symptoms.
- Adjusting psychotropic drug regimens can effectively manage both cardiac risks (QT prolongation) and gastrointestinal disturbances.
- A comprehensive approach to medication is essential for patients with treatment-resistant depression.
Related Concept Videos
Drug Toxicity: Risk factors
213
Adverse Drug Reactions (ADRs) are potential complications that arise during pharmacotherapy, influenced by multiple risk factors. Age plays a significant role; both neonates and the elderly are at heightened risk due to their respective immature and diminished metabolic and elimination processes. Gender also impacts ADRs, with females experiencing a 1.5 to 1.7-fold greater risk than males, which may be linked to pharmacokinetic, pharmacodynamic, and hormonal differences. Notably, neonates, the...
213
Antiarrhythmic Drugs: Class III Agents as Potassium Channel Blockers
3.0K
Class III antiarrhythmic drugs are a group of medications that can prolong action potentials in the heart. They achieve this by blocking potassium channels or enhancing inward currents from sodium channels. However, these drugs have a unique property of "reverse use-dependence," which is most pronounced at slower heart rates and can lead to torsades de pointes—a specific type of arrhythmia. However, it is essential to note that excessive QT interval prolongation—a measure of...
3.0K
Drug toxicity: Idiosyncratic Reactions
197
Idiosyncratic drug reactions represent abnormal chemical responses that vary significantly among individuals, ranging from extreme sensitivity to low doses to insensitivity to high doses. These reactions often occur due to the drug's covalent binding with serum proteins, forming a foreign hapten that triggers an immunotoxicological response. The variability in drug reactions has a strong pharmacogenetic foundation, with genetic differences crucial in how individuals metabolize drugs. For...
197
Drug Toxicity: Overview
256
Drug toxicity quantifies the harm a compound causes to an organism, varying by dose and potentially impacting whole systems or specific organs like the liver. Toxic reactions may arise from venomous insect or spider bites, with effects ranging from mild symptoms to severe outcomes such as brain damage or death. Common forms of acute poisoning include ethanol intoxication and overdose of pain or fever medications, with substances like GHB and heroin being particularly lethal at doses close to...
256
Pharmaceutical Poisoning: Potential Scenarios
102
Pharmaceutical poisoning can occur through various channels, impacting an estimated 2 million hospitalized patients in the U.S. annually with serious adverse drug responses. These scenarios encompass both therapeutic uses, such as drug toxicity, where even standard dosages can lead to severe central nervous system depression, and non-therapeutic exposures, including accidental ingestion by children, and environmental and occupational exposures.Unintentional poisonings often involve exploratory...
102
Antiarrhythmic Drugs: Class I Agents as Sodium Channel Blockers
4.3K
Class I antiarrhythmic drugs are used to treat various types of arrhythmias or irregular heart rhythms. These drugs block the sodium (Na+) channels in the cardiac cells, thereby affecting the movement of electrical impulses across the heart. Class I antiarrhythmic drugs are divided into three subgroups: Class IA, Class IB, and Class IC, each with distinct mechanisms of action and effects on the heart.
Class 1A Antiarrhythmic Drugs: These drugs work by moderately blocking sodium channels,...
Class 1A Antiarrhythmic Drugs: These drugs work by moderately blocking sodium channels,...
4.3K

