Zusammenfassung
Die medizinische Anwendung von Blutegeln hat in den letzten Jahren eine Renaissance insbesondere im Bereich der rekonstruktiven Mikrochirurgie erlangt. Die venöse Stase kann durch die Anwendung von Blutegeln signifikant reduziert werden, was insbesondere beispielsweise nach Replantation von Langfingern günstige Effekte auf die Überlebenswahrscheinlichkeit von Langfingerreplantaten hat. Blutegel führen zu einer temporären Abnahme der venösen Kongestion, bis die körpereigene venöse Drainage wiederhergestellt ist. Sie leben in Symbiose mit Aeromonas hydrophila, die erst das Verdauen der Blutmahlzeit, die bis zum sechsfachen des Blutegelgewichts entsprechen kann, ermöglicht. Eine Vielzahl von antikoagulatorischen Enzymen tragen die Blutegel im Speichel wie den Thrombininhibitor Hirudin, Apyrase, Kollagenase, Hyaluronidase, Faktor-Xa-Inhibitor und Fibrinase I und II. Die Laser-Doppler-Flussmessung konnte einen signifikanten Anstieg der oberflächlichen Hautperfusion in einem Radius von 16 mm um die Bissstelle herum nachweisen. Nach der initialen Blutmahlzeit mit durchschnittlich 2,5 ml führen die antikoagulatorischen Effekte der Blutegelenzyme in den folgenden 5 - 6 Stunden zu einer weiteren Verbesserung der venösen Abflusssituation.
Infektionen während einer Blutegelanwendung sind bekannt mit Inzidenzen zwischen 2,4 % und 20 %, wobei gegenwärtig die Chinolon-Antibiotikatherapie favorisiert wird, um vor allem der Aeromonas hydrophila-Infektion zu begegnen. Anämie ist eine weitere Komplikation der Blutegeltherapie, sodass während der Anwendung Blutbildkontrollen stattfinden sollten. Neben den Fallberichten und Fallstudien zum erfolgreichen Einsatz des Hirudo medicinalis sind gemäß den evidenz-basierten Kriterien randomisiert-kontrollierte Studien nötig, um den wahren Nutzen der Blutegelanwendung in der plastischen und rekonstruktiven Mikrochirurgie zu bestimmen.
Abstract
Medical leech therapy has enjoyed a renaissance in the world of reconstructive microsurgery during recent years. Especially venous congestion is decreased using hirudo medicinalis application such as following replantation of amputated fingers or congested flaps. They provide a temporary relief to venous engorgement whilst venous drainage is re-established. Living in symbiosis with Aeromonas hydrophila, who can digest the sixfold blood meal related to their body weight, and a broad number of anticoagulant agents such as the thrombin inhibitor hirudin, apyrase as well as collagenase, hyaluronidase, Factor Xa inhibitor and fibrinase I and II, leeches decrease venous congestion. Laser Doppler flowmetry could demonstrate a significant increase in superficial skin perfusion following leech application 16 mm around the biting zone. Following the initial blood meal accounting for about 2.5 ml, the anticoagulant effect of the various leeches enzymes follows within the next 5 - 6 hours, which both account for the beneficial effects.
Infection associated with leech therapy is a documented complication of leech application, with reported incidences ranging from 2.4 to 20 % and a chinolone antibiotic is currently recommended to face the potential Aeromonas hydrophila infection. Anemia is a second adverse effect during medicinal leech application which has to be taken account with repetitive blood samples. Besides the successful applications of leeches in various applications in plastic and reconstructive microsurgery, randomized-controlled trials are pending to elucidate the value of hirudo medicinalis according to evidence-based criteria above from case series and case studies.
Schlüsselwörter
Blutegel - Hirudin - plastische Chirurgie - Blutgerinnung
Key words
leeches - hirudin - plastic surgery - blood coagulation
Literatur
1
Adams L A.
The emergency management of a medicinal leech bite.
Ann Emerg Med.
1989;
18
316-319
2
Ardehali B, Hand K, Nduka C, Holmes A, Wood S.
Delayed leech-borne infection with Aeromonas hydrophila in escharotic flap wound.
J Plast Reconst Aesthet Surg.
2006;
59
94-95
3
Avci G, Akan M, Yildirim S, Akoz T.
Digital neurovascular compression due to a forgotten tourniquet.
Hand Surg.
2003;
8
133-136
4
Brown J S, Devine J C, Magennis P, Sillifant P, Rogers S N, Vaughan E D.
Factors that influence the outcome of salvage in free tissue transfer.
Br J Oral Maxillofac Surg.
2003;
41
16-20
5
Callegari P R, Moore Jr J H, Degnan G G.
The leech amphitheatre for digital replantation.
Plast Reconstr Surg.
1992;
90
511-513
6
Carter K C.
Leechcraft in 19th century British medicine.
J R Soc Med.
2001;
94
38-42
7
Chepeha D B, Nussenbaurn B, Bradford C R, Teknos T N.
Leech therapy for patients with surgically unsalvagable venous obstruction after revascularized free tissue transfer.
Arch Otolaryngol Head Neck Surg.
2002;
129
960-965
8
Cho B H, Ahn H B.
Microsurgical replantation of a partial ear, with leech therapy.
Ann Plast Surg.
1999;
43
427-429
9
Concannon M J, Puckett C L.
Microsurgical replantation of an ear in a child without venous repair.
Plast Reconstr Surg.
1998;
102
2088-2093
2094-2096
10
Conforti M L, Connor N P, Heisey D M, Hartig G K.
Evaluation of performance characteristics of the medicinal leech (Hirudo medicinalis) for the treatment of venous congestion.
Plast Reconstr Surg.
2002;
109
228-235
11
Dabb R W, Malone J W, Leverett L C.
The use of medicinal leeches in the salvage of flaps with venous congestion.
Ann Plast Surg.
1992;
29
250-256
12
De Chalain T M.
Exploring the use of the medicinal leech: a risk-benefit analysis.
J Reconstr Microsurg.
1996;
12
165-172
13
Derganc M, Zdravic F.
Venous congestion of flaps treated by application of leeches.
Br J Plast Surg.
1960;
13
187
14
Dippenaar R, Smith J, Goussard P, Walters E.
Meningococcal purpura fulminans treated with medical leeches.
Pediatr Crit Care Med.
2006;
7
476-478
15
Durrant C, Townley W A, Ramkumar S, Khoo C T.
Forgotten digital tourniquet: salvage of an ischaemic finger by application of medicinal leeches.
Ann R Coll Surg Engl.
2006;
88
462-464
16
Foucher G, Henderson H R, Maneau M, Merie M, Braun F M.
Distal digital replantation: one of the best indicators for microsurgery.
Int J Microsurg.
1981;
3
265-270
17
Frodel Jr J L, Barth P, Wagner J.
Salvage of partial facial soft tissue avulsions with medicinal leeches.
Otolaryngol Head Neck Surg.
2004;
131
934-939
18
Gideroglu K, Yildirim S, Akan M, Akoz T.
Immediate use of medicinal leeches to salvage venous congested reverse pedicled neurocutaneous flaps.
Scand J Plast Reconstr Surg Hand Surg.
2003;
37
277-282
19
Golden M A, Quinn J J, Partington M T.
Leech therapy in digital replantation.
AORN J.
1995;
62
364-366
20
Gross M P, Apseos J.
The use of leeches for treatment of venous congestion of the nipple following breast surgery.
Aesthetic Plast Surg.
1992;
16
343-348
21
Hayden R E, Phillips J G, McLear P W.
Leeches. Objective monitoring of altered perfusion in congested flaps.
Arch Otolaryngol Head Neck Surg.
1988;
114
1295-1299
22
Hermansdorfer J, Lineaweaver W C, Follansbee S, Valauri Buncke F A.HJ.
Antibiotic sensitivies of Aeromonas hydrophila cultured in medicinal leeches.
Br J Plast Surg.
1988;
41
649-651
23
Ikizceli I, Avsarogullari L, Sözüer E, Yürümez Y, Akdur O.
Bleeding due to a medicinal leech bite.
Emerg Med J.
2005;
22
458-460
24
Kayikcioglu A, Ozluoglu L, Kizilay A.
Prolonged arterial spasm in an ear replantation without venous anastomosis.
J Reconstr Microsurg.
1997;
13
313-316
25
La Scala G C, Caroll S M, Forrest C R, Zuker R M.
Use of medicinal leech in a reverse-flow radial forearm flap: case report.
J Reconstr Microsurg.
2001;
17
335-340
26
Lee C, Mehran R J, Lessard M L, Kerrigan C L.
Leeches: controlled trial in venous compromised rat epigastric flaps.
Br J Plast Surg.
1992;
45
235-238
27
Lent C M, Fliegner K H, Freedman E, Dickinson M H.
Ingestive behaviour and physiology of the medicinal leech.
J Experiment Biol.
1988;
137
513-527
28
Lineaweaver W C, Hill M K, Buncke G M, Follansbee S, Buncke H J, Wong R K, Manders E K, Grotting J C, Anthony J, Mathes S J.
Aeromonas hydrophila infections following use of medicinal leeches in replantation and flap surgery.
Ann Plast Surg.
1992;
29
238-244
29
Lineaweaver W C, O'Hara M, Stridde B, Valauri F A, Buncke H J.
Clinical leech use in a microsurgical unit: the San Francisco experience.
Blood Coagul Fibrinolysis.
1991;
2
189-192
30
Lozano D D, Stephenson L L, Zamboni W A.
Effect of hyperbaric oxygen and medicinal leeching on survival of axial skin flaps subjected to total venous occlusion.
Plast Reconstr Surg.
1999;
104
1029-1032
31
Mackay D R, Manders E K, Saggers G C, Banducci D R, Prinsloo J, Klugman K.
Aeromonas species isolated from medicinal leeches.
Ann Plast Surg.
1999;
42
275-279
32
Otto A, Schoeller T, Wechselberger G, Ohler K.
Erfolgreiche Ohrreplantation ohne Venenanastomose durch Applikation von Blutegeln.
Handchir Mikrochir Plast Chir.
1999;
31
98-101
33
Ouderkirk J P, Bekhor D, Turret G S, Murali R.
Aeromonas meningitis complicating medicinal leech therapy.
Clin Infect Dis.
2004;
38
e36-e37
34
Pereira J A, Greig J R, Liddy H, Ion L, Moss A L.
Leech-borne Serratia marcescens infection following complex hand injury.
Br J Plast Surg.
1998;
51
640-641
35
Ribuffo D, Chiummariello S, Cigna E, Scuderi N.
Salvage of a free flap after late total thrombosis of the flap and revascularisation.
Scand J Plast Reconstr Surg Hand Surg.
2004;
38
50-52
36
Soucacos P N, Beris A E, Malizos K N, Xenakis T A, Georgoulis A.
Successful treatment of venous congestion in free skin flaps using medicinal leeches.
Microsurgery.
1994;
15
496-501
37
Steer A, Daley A J, Curtis N.
Suppurative sequelae of symbiosis.
Lancet.
2005;
365
188
38
Tsao C K, Chen H C, Chuang C C, Chen H T, Mardini S, Coskunfirat K.
Adequate venous drainage: the most critical factor for a successful free jejunal transfer.
Ann Plast Surg.
2004;
53
229-234
39
Tuncali D, Terzioglu A, Cigsar B, Aslan G.
The value of medicinal leeches in the treatment of class II c ring avulsion injuries: report of 2 cases.
J Hand Surg [Am].
2004;
29
943-946
40
Utley D S, Koch R J, Goode R L.
The failing flap in facial plastic and reconstructive surgery: role of the medicinal leech.
Laryngoscope.
1998;
108
1129-1135
41
Whitaker I S, Izadi D, Oliver D W, Monteath G, Butler P E.
Hirudo medicinalis and the plastic surgeon.
Br J Plast Surg.
2004;
57
348-353
Priv.-Doz. Dr. med. Karsten Knobloch
Plastische, Hand- und Wiederherstellungschirurgie Medizinische Hochschule Hannover
Carl-Neuberg-Straße 1
30625 Hannover
Email: kknobi@yahoo.com