Journals / Türk Kardiyoloji Derneği Arşivi / 2003 / Cilt: 31 - Sayı: 8

Defibrilatör implantasyon sonrası hasarlanabilir üst sınırı kullanarak defibrilasyon eşiğinin belirlenmesi

Detection of defibrillation threshold using the upper limit of vulnerability following defibrillator implantation

Pages
451–457
Publication Date
2022-11-05
DOI
—
🏛️Bibliographic metadata and full text access for this article are provided via DergiPark.
DergiPark Record ↗
✨

AI Summary & Key Takeaways

AI Insight
⚡ TL;DR(Too Long; Didn't Read)

If the induction of VF has been unsuccessful with T wave shock at 5 J, then a high DFT should be expected.

📌 3 Key Takeaways

🎯
Objective & Hypothesis:Although the correlation between upper limit of vulnerability (ULV) and defibrillation threshold (DFT) has been well described, there has been no uniform DFT testing protocol taking the advantage of ULV after defibrillator (ICD) implantation.
📊
Key Findings & Data:A total of 13 patients undergoing a new ICD implantation had a DFT induced with scanned T wave shock.
💡
Conclusion & Impact:If the induction of VF has been unsuccessful with T wave shock at 5 J, then a high DFT should be expected.
🔬Design:Research Article
📍Scope:Comprehensive Sample
⚙️Variables:Domain Parameters

Abstract

Although the correlation between upper limit of vulnerability (ULV) and defibrillation threshold (DFT) has been well described, there has been no uniform DFT testing protocol taking the advantage of ULV after defibrillator (ICD) implantation. This study was designed to test DFT with the least number of fibrillation inductions using the ULV and to describe the most practical set of ICD during DFT following implantation. A total of 13 patients undergoing a new ICD implantation had a DFT induced with scanned T wave shock. The hypothesis that VF could be defibrillated with 5 J higher than the highest T-wave shock needed to induce VF or with 10 J if the T wave shock needed to induce VF was less than 5 J, was tested. The common features of five patients who did not fulfill the hypothesis were that T wave shock needed to induce VF was either under 5 J (4 patients) or high (1 patient). We propose the first T wave and rescue shock set at 10 J and 15 J, respectively. If any of the scanned T wave shocks could not induce VF, then the T wave and the first rescue shock should be set at 5 J and 10 J, respectively. If the induction of VF has been unsuccessful with T wave shock at 5 J, then a high DFT should be expected.

Özet

Hasarlanabilir üst sınır (HÜS) ile defibirlasyon eşiği (DFE) arasında iyi bir uyum olsa da, defibrilatör implantasyonu sonrası HÜS'ın avantajını kullanarak DFE'yi tesbit eden belirgin bir metod yoktur. Bu çalışma HÜS avantajını kullanarak en az fibrilasyon oluşturarak DFE'nin saptanmasını ve DFE saptanmasında en ideal defibrillator ayarlamasını saptamaktır. Yeni ICD implantasyonuna giden 13 hasta T dalga şoku taraması ile oluşturulan DFE'si saptanmıştır. Ventriküler fibrilasyon (VF) oluşturmak için gereken en yüksek T dalga şokundan 5 J fazla defibrilasyon şokunun veya VF oluşturacak T dalga şoku 5 J'den az ise 10 J defibrilasyon şokunun başarılı defibrilasyon sağlayacağı' hipotezi test edildi. Bu hipotezi sağlayamayan 5 hastanın ortak özellikleri VF oluşturmak için verilen T dalga şoklarının 5 J altında (n=4) veya çok üstünde (n=1) olmasıdır. İlk T dalga ve kurtarma şoklarının sırası ile 10 ve 15 J olarak programlanmasını öneriyoruz. Eğer 10 J T dalga şokları VF oluşturamadıysa ilk T dalga ve kurtarma şoklarının sırası ile 5 ve 10 J olarak programlanmalıdır. 5 J T dalga şoku ile VF indüklenmemiş ise yüksek DFE akla gelmelidir.

🔖

Cite This Article

KIRILMAZ, A., KILIÇASLAN, F., DOKUMACI, B., DİNÇKAL, H., YÜCEL, Ö., KARACA, M., ERİNÇ, K. (2022). Defibrilatör implantasyon sonrası hasarlanabilir üst sınırı kullanarak defibrilasyon eşiğinin belirlenmesi. Türk Kardiyoloji Derneği Arşivi, Cilt: 31 - Sayı: 8, 451–457. https://ajindex.com/articles/633876

📄 Full Text PDF Viewer

📄

PDF görüntüleyici hazırlanıyor...

References (1)

  1. Kouwenhoven WB, Milnor WR. Knickerbocker GG, et al: Closed-chest defibrillation of the heart. Surgery 1954;42:550 2. HuiRR, Rosenthal L,NsahE,etal: Relationship between lithe upper limit of vulnerability determined in normal sinus rhythm and the defibrillation threshold in patients with implantable cardioverter defibrillators. PACE 1998;21:687-93 3. Chen PS. Shibata N, Dixon EG, Martin RO. Ideker RE: Comparison of the defibrillation threshold and the upper limit of ventricular vulnerability Circulation 1986;73:1022-8 4. Singer I, Lang D. Defibrillation Threshold: Clinical utility and therapeutic implications. PACE 1992; 15: 932-49 5. Singer I. Van der Laken J, Edmonds H, et al: Is defibrillation testing safe? PACE 1989;12:1530-7 6. Lerman B, Engelstein E: Metabolic determinants of defibrillation. Circulation 1995:91:838-44 7. Bernstein R, Raymond L. Onufer J, et al: Clinical determination of the 80% effective defibrillation voltage: A new Bayesian up-down protocol for defibrillation threshold testing, (abstract) Circulation 1994;90:1-653 8. Hwang C, Swerdlow CD, Kass RM, et al: Upper limit of vulnerability reliably predicts the defibrillation threshold in humans. Circulation 1994;90:2308-14 9. Malkin RA, Idriss SF, Walker RG, Ideke RE: Effect of rapid pacing and the T-wave scanning on the relation between the defibrillation and the upper-limit-of-vulnerability dose-response curves. Circulation 1995; 92:1291-9 10. Chen P-S, Feld GK, Mower MM, Peters BB. Effects of pacing rate and timing of defibrillation shock on the relation between the defibrillation threshold and the upper limit of vulnerability in open chest dogs. J Am Coll Cardiol 1991;18:1555-63 11. Bessho R, Tanaka S.: Measurement of the upper limit of vulnerability during defibrillation can substitute defibrillation threshold measurement. Int J Artif Organs 1998;21:151-60 12. Swerdlow CD: Implantation of Cardioverter Defibrillators without induction of ventricular fibrillation. Circulation 2001;103:2159-64 13. Swerdlow C, Shivkumar K, Zhang J: Determination of the upper limit of vulnerability using implantable cardioverter-defibrillator electrograms. Circulation 2003;107:3028-33