Krnić, Anton
(2009)
Povezanost insuficijencije venskih perforatora s dubokom i površinskom kroničnom venskom insuficijencijom.
PhD thesis, Sveučilište u Zagrebu.
Abstract
Aim. To explore the relationship between perforating veins insufficiency and the insufficiency of the deep and superficial venous system of lower limbs, and to explore the predictive value of the perforating veins' insufficiency, superficial and deep venous insufficiency, as well as age and gender on the deterioration of clinical symptoms in patients with chronic venous insufficiency. ----- Patients and Methods. By means of duplex scanning we determined the number of incompetent perforating veins per limb and the diameter of perforating veins per limb, the extent of great saphenous insufficiency and small saphenous insufficiency, and the presence or absence of insufficiency/obstruction in deep venous system. In this study we included 76 legs without duplex signs of deep or saphenous insufficiency, 80 legs with saphenous insufficiency solely, and 30 legs with deep insufficiency. Among clinical groups, we included 51 leg from clinical group C 0/1 (healthy legs, and legs with teleangiectasia solely), 40 legs from C 2 group (legs with varicose veins), 33 legs form C 3 group (legs with venous edema), 31 leg from C group 4 (legs with skin changes, i.e. lipodermatosclerosis), and 31 leg from C group 5/6 (legs with venous ulceration).We used multivariate linear regression analysis in order to explore the influence of certain factors on perforating veins, superficial and deep insufficiency, and the influence of various factors on deterioration of clinical findings in patients. ----- Results. Multivariate regression analysis of all the included patients revealed that significant predictors of the deterioration of clinical symptoms were the extent of insufficiency of great saphenous vein, the age of the patients, and the deep insufficiency, respectively. In patients without reflux in deep and superficial system relevant predictors in deterioration of clinical symptoms were age and the number of incompetent perforating veins per limb, respectively.In patients with saphenous reflux solely the only predictor in deterioration of clinical symptoms was the extent of great saphenous insufficiency. In patients with deep insufficiency, the only relevant predictor of deterioration of clinical symptoms was the age of patients. Great saphenous insufficiency proved to be a significant predictor of both parameters of perforators’ insufficiency, whereas deep insufficiency was the predictor only for the average diameter of perforating veins per limb. For deterioration of reflux in great saphenous vein, the important predictors were the parameters of perforating veins incompetence, whereas deep insufficiency was not a significant predictor of great saphenous insufficiency level. Opposite of that, the significant predictor for the insufficiency of small saphenous vein was deep insufficiency, and vice versa. ----- Conclusions. In patients with chronic venous insufficiency clinical symptoms deteriorated most significantly with the great saphenous insufficiency, then with older age, and than with deep insufficiency. Perforating veins were the significant predictor of deterioration of clinical symptoms only in patients who did not suffer from saphenous or from deep insufficiency. In patients with deep insufficiency, the only predictor for the deterioration of clinical symptoms was older age.The incompetent perforating veins were characteristic predictor for the higher degrees of great saphenous insufficiency, but were not particularly characteristic predictor for deep insufficiency. Patients’ gender did not come out be a significant predictor for the insufficiency of saphenous or perforators venous system, nor for the deterioration of clinical symptoms.Concerning the therapeutic approach to perforating veins, out of our data it seems that it would be indicated only in cases of positive clinical findings, and without coexistent saphenous or deep insufficiency. In patients with deep reflux or obstruction, a therapeutic approach to insufficient perforating or saphenous veins, according to our results, would presumably not be necessary.
Abstract in Croatian
Namjena. Istražiti povezanost insuficijencije perforantnih vena s insuficijencijom dubokog i površinskog sustava vena nogu, te istražiti koliki je utjecaj insuficijencije perforantnih vena, te površinskih i dubokih vena, kao i dobi i spola na težinu kliničke slike pacijenata s kroničnom venskom insuficijencijom.----- Metode.Korištenjem obojenog doplera pregledano je 186 nogu kod 102 bolesnika da bi se odredio broj inkompetentnih perforatora te dijametar perforantnih vena po nozi, stupanj insuficijencije vene saphene magne i vene saphene parve, te prisutnost ili odsutnost insuficijencije ili opstrukcije u dubokom venskom sustavu. U studiju je uključeno 76 nogu bez ultrazvučnih znakova duboke ili površinske venske bolesti, 80 nogu sa samo površinskom (safenskom) insuficijencijom, te 30 nogu s dubokom insuficijencijom. Od kliničkih skupina bila je uključena 51 noga iz kliničke skupine C 0/1 (zdrave noge ili noge samo s teleangiektazijama), 40 nogu iz skupine C 2 (noge s varikoznim venama), 33 noge iz skupine C 3 (noge s venskim edemom), 31 noga iz skupine C 4 (noge s kožnim promjenama, to jest s lipodermatosklerozom), te 31 noga iz skupine C 5/6 (noge s venskim ulkusima). Koristili smo multivarijantnu linearnu regresijsku analizu kako bismo istražili prediktivnu vrijednost pojedinih faktora koji utječu na perforatorsku, površinsku i duboku insuficijenciju, te prediktorsku vrijednost različitih faktora koji utječu na težinu kliničke slike pacijenata. ----- Rezultati. Kod svih uključenih pacijenta multivarijantna regresijska analiza pokazala je da su značajni prediktori za težinu kliničke slike redom: stupanj refluksa u veni sapheni magni, dob pacijenta, te prisutnost refluksa u dubokom sustavu. Kod pacijenata bez refluksa u dubokom i u površinskom (safenskom) sustavu relevantni prediktori za težinu kliničke slike bili su dob pacijenata i broj inkompetentnih perforatora po nozi.Kod pacijenata s refluksom samo u površinskom (safenskom) sustavu jedini prediktivni faktor za težinu kliničke slike bio je stupanj insuficijencije vene saphene magne.Kod pacijenata s dubokim refluksom za težinu kliničke slike pokazalo se da prediktivnu ulogu ima samo dob pacijenta.Insuficijencija vene saphene magne pokazala se bitnim prediktorom oba parametra perforatorske inkompetencije (broja inkompetentnih perforatora po nozi i prosječnog dijametra perforatora po nozi), a duboki je refluks bio prediktor samo za povećanje prosječnog dijametra perforatora po nozi. Za refluks u veni sapheni magni bitni su prediktori bili oba parametra perforatorske insuficijencije, dok, recimo, duboki refluks nije utjecao na stupanj insuficijencije u veni sapheni magni. Suprotno tome, prediktivni parametar bitan u insuficijenciji vene saphene parve bio je duboki refluks, ali i obratno. ----- Zaključak. Težina kliničke slika pacijenata sa simptomima kronične venske bolesti determinirana je insuficijencijom vene saphene magne, zatim starijom dobi, te zatim refluksom u dubokom sustavu. Perforantne vene značajno utječu samo na kliničku sliku pacijenata kod kojih nije prisutan niti safenski niti duboki refluks.Kod pacijenata s insuficijencijom dubokog sustava jedini faktor koji igra bitnu prediktivnu ulogu u težini kliničke slike je dob pacijenta.Pojava inkompetentnih perforantnih vena karakteristična je za jače stupnjeve insuficijencije vene saphene magne, a nije osobito karakterističan nalaz kod insuficijencije dubokog sustava.Spol pacijenta nije bitan prediktor za jaču insuficijenciju sustava površinskih vena niti perforatora, niti je prediktor težine kliničke slike. Što se tiče terapijskog pristupa perforantnim venama, iz naših podataka proizlazi pretpostavka da bi on bio potreban prvenstveno u slučajevima pozitivne kliničke slike - kada ne postoji niti koegzistentni safenski, niti duboki refluks.
Item Type: |
Thesis
(PhD)
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Mentors: |
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Departments: |
Izvan medicinskog fakulteta |
Depositing User: |
Marijan Šember
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University: |
Sveučilište u Zagrebu |
Institution: |
Medicinski fakultet |
Number of Pages: |
86 |
Status: |
Unpublished |
Creators: |
Creators | Email |
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Krnić, Anton | UNSPECIFIED |
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Date: |
7 May 2009 |
Date Deposited: |
09 Sep 2009 |
Last Modified: |
23 Sep 2011 16:11 |
Subjects: |
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Related URLs: |
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URI: |
http://medlib.mef.hr/id/eprint/659 |
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