scholarly journals Transient cardiac arrhythmias related to lopinavir/ritonavir in two patients with HIV infection

Sexual Health ◽  
2009 ◽  
Vol 6 (3) ◽  
pp. 254 ◽  
Author(s):  
Santosh K. Chaubey ◽  
Ashim K. Sinha ◽  
Elizabeth Phillips ◽  
Darren B. Russell ◽  
Henrik Falhammar
Keyword(s):  
Normal Sinus Rhythm ◽  
Hiv Positive ◽  
Type Ii ◽  
Normal Sinus ◽  
Triple Vessel Disease ◽  
Escape Rhythm ◽  
Combination Drugs ◽  
Permanent Pace ◽  
Pace Maker ◽  
Mobitz Type

A 42-year-old Thai man was administered the combination drugs liponavir/ritonavir and abacavir/lamivudine. On day 3 he was admitted and his electrocardiogram demonstrated sinus arrest with junctional escape rhythm with a rate of 42 min−1. Three days after stopping the medication he reverted to normal sinus rhythm. A 55-year-old Caucasian man was admitted to hospital with triple vessel disease. He had a permanent pace maker inserted 4 years previously for Mobitz type II AV block detected on stress electrocardiogram, which developed 1 month after initiation of lopinavir/ritonavir. These two cases highlight the importance of considering lopinavir/ritonavir induced arrhythmias when dealing with HIV-positive individuals.

scholarly journals Severe bradyarrhythmia requiring temporary pacemaker in a COVID-19 patient receiving lopinavir/ritonavir treatment: a case report

2020 ◽  
Vol 4 (Issue 2) ◽  
pp. 79 ◽  
Author(s):  
Zhenisgul Tlegenova ◽  
Bekbolat Zholdin ◽  
Meirambek Kurmangazin ◽  
Bulat Khamidulla ◽  
Zhambul Zhailybaev
Keyword(s):  
Normal Sinus Rhythm ◽  
Stable Condition ◽  
Chronic Obstructive ◽  
Nasopharyngeal Swab ◽  
Sinus Arrest ◽  
Treatment Benefit ◽  
Obstructive Pulmonary Disease ◽  
Normal Sinus ◽  
Escape Rhythm ◽  
Temporary Pacemaker

A 74-year-old Asian female with a history of hypertension and chronic obstructive pulmonary disease was admitted to hospital for coughing, shortness of breath and fatigue; her nasopharyngeal swab was positive for COVID-19. Lopinavir/ritonavir 800mg/200 mg, daily was started. On the third day of antiviral therapy, the patient complained of dizziness, nausea, she was disorientated, and electrocardiogram showed sinus arrest, junctional escape rhythm 36 beats per min. Patient was successfully treated by temporary pacemaker, normal sinus rhythm was reverted on a 3rd  day after stopping the lopinavir/ritonavir treatment. She was discharged home in stable condition. Bradyarrhythmia in form of sinus arrest can develop during treatment with lopinavir/ritonavir. The temporal nature of the observed changes and the ECG finding suggests the use of L/R contributed to the changes. This case highlights off-label prescribing lopinavir/ritonavir outside of a clinical trial setting should be avoided until the data have proven that treatment benefit over placebo.

Primary negativity does not predict dominant pacemaker location: implications for sinoatrial conduction

1995 ◽  
Vol 269 (3) ◽  
pp. H877-H887 ◽  
Author(s):  
B. I. Bromberg ◽  
D. E. Hand ◽  
R. B. Schuessler ◽  
J. P. Boineau
Keyword(s):  
Right Atrium ◽  
Action Potentials ◽  
Normal Sinus Rhythm ◽  
Sinus Node ◽  
Pacemaker Activity ◽  
Crista Terminalis ◽  
Normal Sinus ◽  
Pace Maker ◽  
Pentobarbital Sodium Anesthesia ◽  
The Right

Activation sequence maps derived during normal sinus rhythm from extracellular potentials in the canine right atrium exhibit widely separated sites of origin. The objectives of this study were to characterize the distribution of pacemakers within the right atrium and to determine the relationship of pacemaker action potentials to sites of earliest surface activation as well as to local extracellular electrograms. The right atria of six adult mongrel dogs were rapidly excised under deep pentobarbital sodium anesthesia and perfused with 95% O2-5% CO2 Krebs-Henseleit solution. Action potentials from the epicardial surface were recorded throughout the region bounded by the crista terminalis laterally and the atrial septum medially. Simultaneously, unipolar extracellular electrograms were recorded from 250 endocardial sites. The earliest pacemakers preceded the earliest electrogram by 63 +/- 34 ms; the latest pacemakers followed the earliest electrogram by 71 +/- 40 ms. Primary negativity in the extracellular electro gram did not predict the site of the earliest or dominant pace maker and in some cases was associated with the latest pace makers. We conclude that primary negativity and/or the sites of earliest activation reflect the point at which the impulse engages atrial myocardium, not the site of earliest pacemaker activity. As such, early extracellular activation appears to represent sites of exit from a relatively insulated sinus node.

scholarly journals TASK-1 current is inhibited by phosphorylation during human and canine chronic atrial fibrillation

2015 ◽  
Vol 308 (2) ◽  
pp. H126-H134 ◽  
Author(s):  
Erin Harleton ◽  
Alessandra Besana ◽  
Parag Chandra ◽  
Peter Danilo ◽  
Tove S. Rosen ◽  
...  
Keyword(s):  
Atrial Fibrillation ◽  
Normal Sinus Rhythm ◽  
Human Subjects ◽  
Phosphorylation Site ◽  
Chronic Atrial Fibrillation ◽  
Resting Membrane Potential ◽  
Atrial Remodeling ◽  
Protein Levels ◽  
Atrial Tissue ◽  
Normal Sinus

Atrial fibrillation (AF) is a common arrhythmia with significant morbidities and only partially adequate therapeutic options. AF is associated with atrial remodeling processes, including changes in the expression and function of ion channels and signaling pathways. TWIK protein-related acid-sensitive K+ channel (TASK)-1, a two-pore domain K+ channel, has been shown to contribute to action potential repolarization as well as to the maintenance of resting membrane potential in isolated myocytes, and TASK-1 inhibition has been associated with the induction of perioperative AF. However, the role of TASK-1 in chronic AF is unknown. The present study investigated the function, expression, and phosphorylation of TASK-1 in chronic AF in atrial tissue from chronically paced canines and in human subjects. TASK-1 current was present in atrial myocytes isolated from human and canine hearts in normal sinus rhythm but was absent in myocytes from humans with AF and in canines after the induction of AF by chronic tachypacing. The addition of phosphatase to the patch pipette rescued TASK-1 current from myocytes isolated from AF hearts, indicating that the change in current is phosphorylation dependent. Western blot analysis showed that total TASK-1 protein levels either did not change or increased slightly in AF, despite the absence of current. In studies of perioperative AF, we have shown that phosphorylation of TASK-1 at Thr383 inhibits the channel. However, phosphorylation at this site was unchanged in atrial tissue from humans with AF or in canines with chronic pacing-induced AF. We conclude that phosphorylation-dependent inhibition of TASK-1 is associated with AF, but the phosphorylation site responsible for this inhibition remains to be identified.

Complications of the Mustard Operation

1986 ◽  
Vol 8 (4) ◽  
pp. 106-126
Keyword(s):  
Heart Block ◽  
Normal Sinus Rhythm ◽  
Venous Blood ◽  
Resting Heart Rate ◽  
Normal Sinus ◽  
Mustard Operation ◽  
Mitral Orifice ◽  
The Mean ◽  
Degree Heart Block

Eight pediatric cardiac centers pooled clinical and ECG data from 372 patients who survived the Mustard operation (intraatrial baffle directing pulmonary venous blood to the tricuspid orifice and systemic venous blood to the mitral orifice) for at least 3 months. The follow-up period ranged from 0.4 to 15.9 years, and the mean age at operation was 2 years. The mean resting heart rate for patients who had the Mustard operation was consistently lower than age-matched controls. During the year of operation, 76% of patients had normal sinus rhythm; this percentage declined yearly to 57% by the end of the eighth postoperative year. Active arrhythmias increased after the tenth year. Second or third-degree heart block occurred in 33% of patients during the year of operation and changed very little thereafter. Of the total 372 patients, 39 received pacemakers, 52% during the year of surgery and 48% evenly distributed throughout the follow-up period.

Myocarditis case associated with Campylobacter jejuni

2018 ◽  
Vol 43 (5) ◽  
pp. 568-570
Author(s):  
Hakan Ayyildiz ◽  
Mehmet Kalayci ◽  
Nadire Cinkilinc ◽  
Mahmut Bozkurt ◽  
Makbule Kutlu Karadag
Keyword(s):  
Emergency Department ◽  
Chest Pain ◽  
Campylobacter Jejuni ◽  
Bacterial Infections ◽  
Troponin I ◽  
Normal Sinus Rhythm ◽  
Cardiac Enzymes ◽  
Normal Sinus ◽  
Anterior Hemiblock ◽  
High Sensitive Troponin

Abstract Objective Myocarditis is an inflammatory disease of the heart caused by various agents and especially enteroviruses, and it is difficult to diagnose and treat. Myocarditis is rarely associated with bacterial infections. Although the most common bacterial infections are Salmonella spp. and Shigella spp., extremely rare cases of Myocarditis due to Campylobacter jejuni are also reported. Patient and methods A 17-year-old male patient with no previous chronic illness was admitted to our emergency department with complaints of abdominal pain, diarrhea, vomiting, and chest pain. He stated that symptoms began after eating a chicken burger a few days ago. Results In the laboratory tests performed, CK-MB and high sensitive Troponin I values were determined as 33.8 IU/L and 1816 ng/L, respectively. Electrocardiogram results revealed left axis left anterior hemiblock in the normal sinus rhythm as well as a ST-T change in the inferior and lateral derivations. Campylobacter jejuni was detected in the stool sample of the patient. Conclusion Myocarditis is one of the rare complications of C. jejuni infection. Bacterial myocarditis should be considered when troponin and cardiac enzymes are elevated in patients admitted to the emergency department with diarrhea and chest pain.

Sign in / Sign up

Export Citation Format

Share Document