Aberrant migration and surgical removal of a heartworm (Dirofilaria immitis) from the femoral artery of a cat

Maureen S. Oldach, Catherine Gunther-Harrington, Ingrid Balsa, Ehren M. Mclarty, Kyle A. Wakeman, Kathryn L Phillips, Juhana Honkavaara, Lance C Visser, Joshua A Stern

Research output: Contribution to journalArticle

Abstract

A cat was evaluated for an acute-onset of right pelvic limb paresis. Thoracic radiographs revealed normal cardiac size and tortuous pulmonary arteries. Abdominal ultrasound identified a heartworm (HW) extending from the caudal abdominal aorta into the right external iliac artery and right femoral artery. The cat was HW-antigen positive. Echocardiography revealed a HW within the right branch of the main pulmonary artery and evidence of pulmonary hypertension. An agitated-saline contrast echocardiogram revealed a small right to left intracardiac shunt at the level of the atria. Surgical removal of the HW was performed with no substantial postoperative complications. There was return of blood flow and improved motor function to the limb. The cat remains mildly paretic on the affected limb with no other clinical signs.

LanguageEnglish (US)
JournalJournal of Veterinary Internal Medicine
DOIs
StateAccepted/In press - Jan 1 2018

Fingerprint

Dirofilaria immitis
heartworms
Femoral Artery
thighs
arteries
Cats
Extremities
limbs (animal)
cats
Pulmonary Artery
pulmonary artery
Iliac Artery
Abdominal Aorta
iliac artery
Paresis
Pulmonary Hypertension
paresis
postoperative complications
Echocardiography
echocardiography

Keywords

  • Arterial
  • Feline
  • Heart
  • Pulmonary hypertension
  • Thromboembolism

ASJC Scopus subject areas

  • veterinary(all)

Cite this

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title = "Aberrant migration and surgical removal of a heartworm (Dirofilaria immitis) from the femoral artery of a cat",
abstract = "A cat was evaluated for an acute-onset of right pelvic limb paresis. Thoracic radiographs revealed normal cardiac size and tortuous pulmonary arteries. Abdominal ultrasound identified a heartworm (HW) extending from the caudal abdominal aorta into the right external iliac artery and right femoral artery. The cat was HW-antigen positive. Echocardiography revealed a HW within the right branch of the main pulmonary artery and evidence of pulmonary hypertension. An agitated-saline contrast echocardiogram revealed a small right to left intracardiac shunt at the level of the atria. Surgical removal of the HW was performed with no substantial postoperative complications. There was return of blood flow and improved motor function to the limb. The cat remains mildly paretic on the affected limb with no other clinical signs.",
keywords = "Arterial, Feline, Heart, Pulmonary hypertension, Thromboembolism",
author = "Oldach, {Maureen S.} and Catherine Gunther-Harrington and Ingrid Balsa and Mclarty, {Ehren M.} and Wakeman, {Kyle A.} and Phillips, {Kathryn L} and Juhana Honkavaara and Visser, {Lance C} and Stern, {Joshua A}",
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AU - Oldach, Maureen S.

AU - Gunther-Harrington, Catherine

AU - Balsa, Ingrid

AU - Mclarty, Ehren M.

AU - Wakeman, Kyle A.

AU - Phillips, Kathryn L

AU - Honkavaara, Juhana

AU - Visser, Lance C

AU - Stern, Joshua A

PY - 2018/1/1

Y1 - 2018/1/1

N2 - A cat was evaluated for an acute-onset of right pelvic limb paresis. Thoracic radiographs revealed normal cardiac size and tortuous pulmonary arteries. Abdominal ultrasound identified a heartworm (HW) extending from the caudal abdominal aorta into the right external iliac artery and right femoral artery. The cat was HW-antigen positive. Echocardiography revealed a HW within the right branch of the main pulmonary artery and evidence of pulmonary hypertension. An agitated-saline contrast echocardiogram revealed a small right to left intracardiac shunt at the level of the atria. Surgical removal of the HW was performed with no substantial postoperative complications. There was return of blood flow and improved motor function to the limb. The cat remains mildly paretic on the affected limb with no other clinical signs.

AB - A cat was evaluated for an acute-onset of right pelvic limb paresis. Thoracic radiographs revealed normal cardiac size and tortuous pulmonary arteries. Abdominal ultrasound identified a heartworm (HW) extending from the caudal abdominal aorta into the right external iliac artery and right femoral artery. The cat was HW-antigen positive. Echocardiography revealed a HW within the right branch of the main pulmonary artery and evidence of pulmonary hypertension. An agitated-saline contrast echocardiogram revealed a small right to left intracardiac shunt at the level of the atria. Surgical removal of the HW was performed with no substantial postoperative complications. There was return of blood flow and improved motor function to the limb. The cat remains mildly paretic on the affected limb with no other clinical signs.

KW - Arterial

KW - Feline

KW - Heart

KW - Pulmonary hypertension

KW - Thromboembolism

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