Limb asymmetry in titanium Greenfield filters: Clinically significant?

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Presentation transcript:

Limb asymmetry in titanium Greenfield filters: Clinically significant? Lazar J. Greenfield, MD, Mary C. Proctor, MS, Kyung J. Cho, MD, Thomas W. Wakefield, MD Journal of Vascular Surgery Volume 26, Issue 5, Pages 770-775 (November 1997) DOI: 10.1016/S0741-5214(97)70089-2 Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 1 Titanium Greenfield filter with the modified hook introduced in 1989 for percutaneous placement (Boston Scientific Co., Watertown, Mass.). Journal of Vascular Surgery 1997 26, 770-775DOI: (10.1016/S0741-5214(97)70089-2) Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 2 Indications for filter placement have changed during the past 3 years, with a greater number being placed for prophylaxis. This indication is used most often in trauma patients. Journal of Vascular Surgery 1997 26, 770-775DOI: (10.1016/S0741-5214(97)70089-2) Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 3 Schematic presentation of four potential patterns of asymmetry based on the number of legs on each side of the cava. Journal of Vascular Surgery 1997 26, 770-775DOI: (10.1016/S0741-5214(97)70089-2) Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 4 Cavagram of a patient with a severely distorted filter, probably associated with compression of the cava as a result of a retroperitoneal hematoma. A recurrent PE developed in this patient 1 month later. Journal of Vascular Surgery 1997 26, 770-775DOI: (10.1016/S0741-5214(97)70089-2) Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 5 Clinical presentation of the 4-2 (A) and 5-1 (B) distributions as noted on follow-up radiographs. These are the most frequently noted patterns of distortion. Journal of Vascular Surgery 1997 26, 770-775DOI: (10.1016/S0741-5214(97)70089-2) Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions

Fig. 5 Clinical presentation of the 4-2 (A) and 5-1 (B) distributions as noted on follow-up radiographs. These are the most frequently noted patterns of distortion. Journal of Vascular Surgery 1997 26, 770-775DOI: (10.1016/S0741-5214(97)70089-2) Copyright © 1997 Society for Vascular Surgery and International Society for Cardiovascular Surgery, North American Chapter Terms and Conditions