0
Critical Care |

Delayed Recurrent Effect of Pentamidine: Polymorphic Ventricular Tachycardia

Vikram Oke, MBBS; Rakesh Vadde, MBBS; Saurav Pokharel, MBBS; Bikash Bhattarai, MBBS; Prajakta Mungikar, MBBS; Joseph Quist, MD; Danilo Enriquez, MD; Francis Schmidt, MD
Author and Funding Information

Interfaith Medical Center, Brooklyn, NY


Chest. 2014;146(4_MeetingAbstracts):262A. doi:10.1378/chest.1990045
Text Size: A A A
Published online

Abstract

SESSION TITLE: Critical Care Case Report Posters III

SESSION TYPE: Affiliate Case Report Poster

PRESENTED ON: Tuesday, October 28, 2014 at 01:30 PM - 02:30 PM

INTRODUCTION: Pentamidine is used for treating Pneumocystis jiroveci pneumonia (PCP) in patients with intolerance or no response to Trimethoprim-Sulphamethoxazole. QT prolongation and Polymorphic Ventricular Tachycardia (VT) have been observed temporally following IV administration (1). Delayed occurrence of VT after discontinuation of Pentamidine is rare. We present such a rare case.

CASE PRESENTATION: 53 years old African-American female with HIV noncompliant to antiretrovirals was admitted to ICU with acute respiratory failure from PCP. Pentamidine IV was started due to intolerance to Trimethoprim-Sulphamethoxazole. Baseline QTc,echocardiogram,electrolytes, renal, hepatic functions were normal. Patient improved and was successfully extubated. On day fifteen of Pentamidine therapy, patient suffered a cardiac arrest from VT and was revived within two minutes after 200 Joule(J )cardioversion. QTc had prolonged to 549 msec(ms). Blood sugar, electrolytes including magnesium, potassium were normal. Pentamidine was immediately discontinued. Acute coronary syndrome was ruled out. Review of medications revealed no other QTc prolonging agents. QTc increased to 810ms two days after discontinuation of Pentamidine. Isoproterenol drip was started as per cardiology, QTc decreased to 530ms. Eight days after discontinuation of Pentamidine, patient again developed VT and revived after 200J cardioversion. QTc was noted to be 616 ms. Electrolytes and renal functions were normal. Patient was constantly monitored during her further stay and QTc normalized. No further ventricular arrhythmias occurred and patient was discharged after full recovery.

DISCUSSION: The mechanism with which Pentamidine induces VT is not well known. However its proarrythmogenic properties may be due to similarity of its structure to Procainamide. Prolonged effect on QTc many days after its discontinuation could be due to tissue binding(2).

CONCLUSIONS: Serum magnesium, potassium,creatinine, QTc should be monitored closely(2). Our patient developed VT seven days after discontinuation of Pentamidine. Patients treated recently with Pentamidine should be closely monitored for prolonged period to prevent this deadly complication. Required duration of monitoring is arbitrary.

Reference #1: Recurrent Ventricular Tachycardia Due to Pentamidine-Induced Cardiotoxicity Mark R. Bibler M.D; Te-Chuan Chou M.D; Robert J Toltzis M.D; Patricia A Wade MD

Reference #2: Prolonged recurrence of pentamidine-induced torsades de pointes Cortese LM, Gasser RA Jr, Bjornson DC, Dacey MJ, Oster CN

DISCLOSURE: The following authors have nothing to disclose: Vikram Oke, Rakesh Vadde, Saurav Pokharel, Bikash Bhattarai, Prajakta Mungikar, Joseph Quist, Danilo Enriquez, Francis Schmidt

No Product/Research Disclosure Information


Sign In to Access Full Content

MEMBER & INDIVIDUAL SUBSCRIBER

Want Access?

NEW TO CHEST?

Become a CHEST member and receive a FREE subscription as a benefit of membership.

Individuals can purchase this article on ScienceDirect.

Individuals can purchase a subscription to the journal.

Individuals can purchase a subscription to the journal or buy individual articles.

Learn more about membership or Purchase a Full Subscription.

INSTITUTIONAL ACCESS

Institutional access is now available through ScienceDirect and can be purchased at myelsevier.com.

Sign In to Access Full Content

MEMBER & INDIVIDUAL SUBSCRIBER

Want Access?

NEW TO CHEST?

Become a CHEST member and receive a FREE subscription as a benefit of membership.

Individuals can purchase this article on ScienceDirect.

Individuals can purchase a subscription to the journal.

Individuals can purchase a subscription to the journal or buy individual articles.

Learn more about membership or Purchase a Full Subscription.

INSTITUTIONAL ACCESS

Institutional access is now available through ScienceDirect and can be purchased at myelsevier.com.

Figures

Tables

References

NOTE:
Citing articles are presented as examples only. In non-demo SCM6 implementation, integration with CrossRef’s "Cited By" API will populate this tab (http://www.crossref.org/citedby.html).

Some tools below are only available to our subscribers or users with an online account.

Sign In to Access Full Content

MEMBER & INDIVIDUAL SUBSCRIBER

Want Access?

NEW TO CHEST?

Become a CHEST member and receive a FREE subscription as a benefit of membership.

Individuals can purchase this article on ScienceDirect.

Individuals can purchase a subscription to the journal.

Individuals can purchase a subscription to the journal or buy individual articles.

Learn more about membership or Purchase a Full Subscription.

INSTITUTIONAL ACCESS

Institutional access is now available through ScienceDirect and can be purchased at myelsevier.com.

Related Content

Customize your page view by dragging & repositioning the boxes below.

Find Similar Articles
CHEST Journal Articles
PubMed Articles
  • CHEST Journal
    Print ISSN: 0012-3692
    Online ISSN: 1931-3543