Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “VEINS”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

Quote a phrase for an exact phrase match. Source license links do not imply unrestricted reuse.

At least 523 records · Page 29Linked to original sources
PubMed1995

Flow reversal in the right anterior branch of the portal vein: "bicolor portal vein" color Doppler analysis.

The purpose of this study is to describe a phenomenon of bidirectional flow, "bicolor portal vein" (BPV), within the right anterior branch of the portal vein (RAPV), with color Doppler imaging (CDI). We prospectively studied with CDI the intrahepatic portal vein and its branches in 316 consecutive patients in search of areas of nonlaminar flow within the RAPV. Forty patients were excluded from the study due to varied conditions that precluded an accurate CDI study. A prospective design allowed us to record the frequency of appearance, systematically measure a set of parameters in each patient, and establish different groups for comparison. We found an area of BPV within the RAPV in six patients. Five of them had a history of liver disease (8.2% of the patients with known liver disease). The BPV was consistently portrayed as a well-defined blue oval-shaped area of flow reversal attached to the medial side of the RAPV immediately before its bifurcation, suggesting a rotary motion of blood. All six patients presented a transverse diameter of the RAPV significantly larger than the rest of the patients (p < 0.05). Furthermore, blood flow measurements within the RAPV of the six patients with BPV were found to be significantly higher when compared with the rest of the patients (< 0.05). Knowledge of the possible presence of a BPV within the RAPV can prevent diagnostic confusion with reversal of flow, a truly pathologic condition related to liver disease.

Humans↗
PubMed1990

Abnormal venous connection between the left upper pulmonary vein and the left brachiocephalic vein, associated with rheumatic combined valvular heart disease.

A case of partial anomalous pulmonary venous return (PAPVR) associated with mitral stenosis and aortic regurgitation is described. The diagnostic clue was radiocardiography using radioiodide serum albumin (RISA), our routine procedure before cardiac catheterization. The abnormal vessel connected with both the left upper pulmonary vein (PV) and the left brachiocephalic vein, without a stenotic lesion. Aortic valve replacement, open mitral commissurotomy, and simple ligation of the anomalous vein were successfully performed.

Aortic Valve↗
PubMed2001

[Superior mesenteric vein syndrome: a case of duodenal stenosis caused by atypical malposition of the superior mesenteric vein].

Cases in which mesenteric vessels lead to stenosis of the duodenum are very rare. Several cases have been reported of patients suffering from stenosis of the last third of the duodenum due to a malpositioning of the superior mesenteric artery or the left renal vein. We report a 78-year-old patient who was suffering from dyspepsia, pain in the upper abdominal region, nausea, and vomiting. The medical history revealed that the patient had undergone a subtotal gastrectomy according to Billroth II at the age of 19 because of similar complaints. In the last 20 years the patient had to be laparotomized several times for ileus of the small intestine. Now the patient presented abdominal complaints with nausea and pressure in the upper abdominal region. Assuming an efferent-loop syndrome and adhesions, the patient was laparotomized. We discovered malpositioning of the superior mesenteric vein, leading to stenosis of the superior part of the duodenum. In fact, 60 years ago surgeons performed a duodenojejunostomy, circumvening the stenosis of the duodenum. With a "delay of 60 years", we then performed a subtotal gastrectomy according to Billroth II. The postoperative course was uneventful; the patient had no complaints and increased in body weight. To our knowledge, this is the first time that a stenosis of the duodenum due to malpositioning of the superior mesenteric vein has been observed.

Aged↗
PubMed2003

Right internal iliac vein joining the left common iliac vein: case report demonstrated by CT angiography.

An unusual variation of the iliac veins was detected by computed tomography (CT) angiography in a 35-year-old man. In coronal CT reconstructions, it was shown that the right internal iliac vein of this patient crossed to the left side and drained to the left common iliac vein. This variation is important in retroperitoneal, laparoscopic and orthopedic surgery. We present the CT findings and discuss the embryological origin of this unusual congenital anomaly.

Adult↗
PubMed2004

Portal vein resection for a portal vein thrombus caused by nonfunctioning islet cell carcinoma: report of a case.

We report a case of nonfunctioning islet cell carcinoma of the pancreas causing a tumor thrombus in the portal vein. The patient was a 60-year-old woman whose presenting symptoms were abdominal pain, vomiting, and weight loss. We performed a subtotal pancreatectomy and splenectomy combined with partial resection of the portal vein. Histopathological studies confirmed the diagnosis of nonfunctioning islet cell carcinoma of the pancreas with a tumor thrombus in the portal vein. The patient's postoperative course was uneventful and she is doing well 25 months after the operation.

Carcinoma, Islet Cell↗
PubMed1985

Remnant saphenous veins after aortocoronary bypass grafting: analysis of 3,394 centimeters of unused vein from 402 patients.

To assess the status of a saphenous vein (SV) excised for coronary artery bypass grafting (CABG), 3,394 cm of remnant SV from 402 patients who underwent CABG were examined. The SV remnants were 0.5 to 52 cm long (mean 8.4). They were sectioned into 5-mm-long segments, and the resulting 6,788 five-millimeter segments were examined histologically: 5,896 (87%) were narrowed 0 to 25% in cross-sectional area by fibrous tissue; 853 (12%) were narrowed 26 to 50%; 23 (0.6%), 51 to 75%, and 16 (0.4%) segments were narrowed 76 to 100%. Of the 16 segments severely narrowed, 7 (44%) were nearly totally occluded by fibrous tissue. In 17 patients who died within 24 hours of CABG, similar degrees of luminal narrowing were observed in remnant segments and in utilized segments of SV. Thus, significant preexisting luminal narrowing of SV used for CABG is infrequent. The intimal fibrous thickening is variable within the same vein when each 5-mm-long segment is analyzed; it is variable from 1 vein to another in the same patient, and it varies among patients.

Adult↗
PubMed2006

A new method of internal jugular vein catheterization using the cricoid cartilage and the external jugular vein as a landmark.

PURPOSE: The aim of this study was to find a new external landmark for internal jugular vein (IJV) catheterization. METHODS: The locations of the right IJVs of 100 patients were examined by ultrasonography using the external jugular vein and the cricoid cartilage as landmarks, and in a clinical study, we catheterized the right IJVs of 100 patients using these landmarks. RESULTS: By ultrasonography, the average distance from point A (a point 1.5 cm medial from the external jugular vein at the cricoid cartilage level) to the midpoint of the right IJV was 0.35 +/- 0.61 cm, and by clinical study, catheterization of the right IJV was successful in 99% (99/100) of patients. Patients required an average of 1.75 +/- 0.75 attempts, and no carotid puncture occurred. CONCLUSIONS: This new method of IJV catheterization was found to have a high success rate and few complications.

Adult↗
PubMed2006

Novel two-step resection for lesions between the middle hepatic vein and vena cava which allows the middle hepatic vein to be preserved.

Patients with bilobar colorectal cancer metastases to the liver present a unique problem in terms of resection. They sometimes require a staged approach to resection that takes advantage of the liver's ability to regenerate, as well as the newer chemotherapeutic agents (e.g., oxaloplatin, irinotecan (CPT-11), and bevacizumab) that have become available. In cases of multiple bilobar metastases, if segment IV is clear of tumor, a left lateral segmentectomy (LLS) can be performed, followed several months later by a formal right hepatectomy. The remnant liver composed of the hypertrophied segment IV is drained by the middle hepatic vein (MHV). In this context, patients with lesions between the origin of the MHV and the inferior vena cava (IVC) present a particularly difficult problem. Conventional excision would require an extended hepatectomy and division of the MHV along with either the right or left hepatic veins (RHV, LHV). This would make it impossible to continue with a formal resection of the remaining lesions in the contralateral liver without sacrificing the sole remaining hepatic vein. We present a novel two-step hepatectomy for lesions between the MHV and the IVC that allows the MHV to be preserved and all lesions to be resected.

Adenocarcinoma↗
PubMed2001

[Radial free flap with drainage through the cephalic vein dissected up to the deltoid region: a resource in the absence of receptor veins].

Repeated treatments on the neck in head and neck oncological patients make more and more difficult to elaborate microvascularized flaps because sometimes it is necessary to sacrifice receptor veins. In this paper it is showed one way of solving this problem, by dissection of the cephalic vein towards the deltoid region, keeping the venous pedicle intact. In this fashion venous anastomosis is avoided, getting efficient blood drainage. Simplicity and efficiency of this technique make possible thinking about it even with existing receptors veins. The main inconvenience is the surgical scare on the anterior region of the arm.

Arm↗
PubMed1978

The short saphenous vein: an alternative to the long saphenous vein for aortocoronary bypass.

The long saphenous vein and internal mammary artery are considered at present to be the best grafts available for coronary artery bypass. Patients who have had bilateral long saphenous vein stripping and who require multiple aortocoronary bypass grafts present a challenge to the cardiac surgeon. The short saphenous vein appears to be a suitable alterative.

Coronary Artery Bypass↗
PubMed1995

How successful is varicose vein surgery? A patient outcome study following varicose vein surgery using the SF-36 Health Assessment Questionnaire.

OBJECTIVE: Assessment of outcome after varicose vein surgery. DESIGN: Prospective study using the Health Assessment Questionnaire (SF36) which considers different aspects of overall health. SETTING: University Hospital and Community. MATERIALS: 150 patients undergoing varicose vein surgery. CHIEF OUTCOME MEASURES: SF36 questionnaires were sent pre-operatively and at 1 and 6 months post surgery. MAIN RESULTS: Eighty-nine (59%) patients answered all three questionnaires. Pre-operatively their overall health was similar to that of the general population. The "cost" to the patient of the operation was demonstrated by an increased pain and reduced role function at 1 month post-operation (p < 0.01). By 6 months post-operation, when compared with preoperative values, all dimensions except social function and health perception were improved (p < 0.01). Overall symptoms improved (p < 0.01) by 1 month and were further improved at 6 months. CONCLUSIONS: The general good health of varicose vein patients may justify the low priority given to their treatment, but the improvement in symptoms and general health that relatively simple surgery provides should ensure its continued provision as a health care service.

Adult↗
PubMedDate not supplied

Portal vein embolization vs. portal vein ligation for induction of hypertrophy of the future liver remnant.

The objective of this study was to assess the efficacy of right portal vein embolization (PVE) vs. right portal vein ligation (PVL) for induction of hypertrophy of the left lateral liver lobe before extended right hepatectomy. Thirty-four patients with primary or secondary liver tumors and estimated remnant functional liver parenchyma of less than 0.5% of body weight underwent either right PVE (transcutaneous, n = 10; transileocolic, n = 7) or right PVL (n = 17). Liver volume was assessed by CT scan before occlusion of the right portal vein and prior to resection. There were no deaths. The morbidity rate in each group was 5.8% (PVE, 1 abscess; PVL, 1 bile leak). The increase in liver volume was significantly higher after PVE compared with PVL (188 +/- 81 ml vs. 123 +/- 58 ml) (P = 0.012). Postoperative hospital stay was significantly shorter after PVE in comparison to PVL (4 +/- 2.9 days vs. 8.1 +/- 5.1 days; P < 0.01). Curative liver resection was performed in 10 of 17 patients after PVE and 11 of 17 patients after PVL. PVE and PVL were found to be feasible and safe methods of increasing the remnant functional liver volume and achieving resectability for extended liver tumors. PVE results in a significantly more efficient increase in liver volume and a shorter hospital stay.

Aged↗
PubMed2001

Embolization of the left portal vein to inferior vena cava shunts for chronic recurrent hepatic encephalopathy via the mesenteric vein.

Diagnostic imaging and embolization therapy for very rare intrahepatic portal-systemic shunts with liver cirrhosis are reported. An 82-year-old woman was admitted to the hospital (Yachiyo Hospital) because of hepatic encephalopathy. Computed tomography with contrast enhancement demonstrated anomalous vessels between the portal vein and the inferior vena cava. Those shunts were suspected as the cause of her encephalopathy with hyperammonemia. Portography through McBurney's laparotomy demonstrated two portal-caval shunts; one was from the bifurcation of the portal vein and the other was from the left portal vein. They seemed to originate from the vascular system of the caudate lobe, and were obstructed with stainless coils. The patient is well with a normal serum ammonia level 40 months following the intervention.

Aged↗
PubMed2004

Ablation of superior pulmonary veins compared to ablation of all four pulmonary veins:.

INTRODUCTION: Isolation of all pulmonary veins (PV) is advocated for treatment of paroxysmal atrial fibrillation (PAF). However, the superior PVs are responsible for most AF triggers, whereas the inferior PVs carry the higher risk for ablation-induced ostial stenosis. The aim of this study was to compare a superior PV isolation approach with isolation of all PVs for treatment of PAF. METHODS AND RESULTS: Fifty-two patients with PAF were randomized to either left superior pulmonary vein (LSPV) isolation followed by additional isolation of the right superior pulmonary vein (RSPV) in case of AF recurrence (group A, n = 27) or isolation of all four PVs followed by a repeat procedure in case of recurrence (group B, n = 25). At 1-year follow-up, 11 patients (41%) in group A and 8 patients (32%) in group B had AF relapse (P = 0.55). No significant differences in AF relapse were detected between groups at 3 and 12 months (log rank = 0.36, P = 0.54) and by Cox proportional hazards model analysis (P = 0.62). Nonsignificant PV stenosis was detected in two patients from group B. Total radiofrequency energy delivery and fluoroscopy and procedure times were lower in group A: 8.9 +/- 1.4 minutes vs 25.6 +/- 3.7 minutes (P < 0.001), 22.2 +/- 6.8 minutes vs 62 +/- 10.3 minutes (P < 0.001), and 131.8 +/- 26.5 minutes vs 222.2 +/- 32.3 minutes (P < 0.001), respectively. CONCLUSION: A staged superior PVs isolation approach confers equal success rates but with reduced radiofrequency energy delivery and fluoroscopy and procedure times compared to isolation of all PVs at the initial ablation attempt.

Adult↗
PubMed2000

Presentation of thyroid carcinoma as a thrombosed external jugular vein, with intraluminal tumour thrombus in the great veins.

Carcinoma of the thyroid most commonly presents as an asymptomatic thyroid nodule. Some types of thyroid carcinoma show vascular invasion, but this is usually microscopic.(1,2)It is rare for such invasion to involve the great veins and be macroscopic. There are 18 such reports in the literature to date.(3-12)We report a case of a carcinoma of the thyroid that presented due to the presence of tumour thrombus within the external jugular vein, where thrombus was also seen within the great veins.

Aged↗
PubMedDate not supplied

Inhibin B levels in peripheral vein do not correlate with inhibin B levels in the spermatic vein in adolescents with varicocele.

This study was conducted to evaluate the inhibin B with FSH and LH levels on spermatogenesis in varicocele patients. The study group consisted of 10 adolescent with left idiopathic varicocele of grade II and III. Blood specimens were obtained from dilated spermatic vein and peripheral vein simultaneously. Peripheral samples were also collected from 7 healthy children as controls. Inhibin B was measured with ELISA inhibin B kits. FSH and LH were analyzed by radioimmunoassay techniques. The results were analyzed using Mann-Whitney U and Spearman's rank tests. A value of p < 0.05 was considered significant. Peripheral FSH, LH and inhibin B levels were the same in the study and control group (p > 0.05). Mean inbibin B levels of spermatic vein were significantly higher than the control and peripheral blood of the study groups (p < 0.05). FSH, LH, and inhibin B levels correlated poorly each other (p > 0.05). Preoperative serum inhibin B concentration could not reliably predict a response to varicocelectomy, but the increase in inhibin B levels after treatment might suggest an improvement in testicular function.

Adolescent↗
PubMed1979

Comparative dilator effect of verapamil and sodium nitroprusside in forearm arterial bed and dorsal hand veins in man: functional differences between vascular smooth muscle in arterioles and veins.

Verapamil and sodium nitroprusside induce a dose dependent dilatation in the forearm arterial bed and preconstricted dorsal hand vein in man. Verapamil is about twenty times more effective in dilating arterioles than veins; sodium nitroprusside is about ten times more effective in veins than arterioles. These differences can be related to functional differences between the two types of vessel.

Adult↗