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Results for “no-touch technique”

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At least 19 recordsLinked to original sources
PubMed1992

Successful resection of a distal aortic arch aneurysm in a patient with Behçet's disease using an "aortic no-touch" technique and hypothermic total-body retrograde perfusion.

Resection of a false aneurysm of the aortic arch in a patient with Behçet's disease was safely performed using an "aortic no-touch" technique. This consisted of: (1) femoral artery and bicaval cannulation, (2) profound hypothermia (below 20 degrees C) by core cooling, (3) retrograde cardioplegia through the coronary sinus, and (4) total body retrograde perfusion via both venae cavae without aortic cross-clamping. The patient showed no evidence of neurological damage and the postoperative course was uneventful.

Adult↗
PubMed1977

No-touch technique for intraocular malignant melanomas.

Large variations in intraocular pressure occur during enucleation, scleral depression, 32P testing, and vigorous rubbing of an eye. Data from animal studies show that during a critical phase of an intraocular malignant melanoma, ocular massage significantly decreased longevity due to increased metastastic disease. We report "no-touch" technique to prevent tumor spread from occurring secondary to ocular manipulation during enucleation. This technique avoids IOP elevations above 50 mm Hg before freezing completely around the tumor, thereby preventing flow of fluid and blood to or from the tumor prior to the manipulation necessary for enucleation. Theoretically, the patient with an ocular tumor should be warned against vigorous rubbing of his eyes and hard lid squeezes or diagnostic techniques that elevate IOP. The ophthalmologist should perform enucleation with gentieness and avoid pressure on the globe. Patients who are being followed up with a suspected ocular tumor should be warned not to rub or vigorously squeeze their eyelids.

Animals↗
PubMed1991

Mammary artery grafts: a new no-touch technique for anastomosis.

Reported techniques for mammary artery-coronary artery anastomosis involve instrumental damage to one or all three layers of the mammary artery during surgical connection. Described herein is an atraumatic method of suturing that achieves a precise and highly accurate anastomosis.

Anastomosis, Surgical↗
PubMed1975

Internal mammary--coronary artery anastomosis. "No-touch" technique.

A simple technique for internal mammary--coronary artery anastomosis that can be applied to all branches of the coronary circulation is described. The anastomosis can be constructed in 10 to 15 minutes. This technique eliminates pinching of the internal mammary artery by forceps.

Humans↗
PubMedDate not supplied

A no-touch technique.

Explore the source record for details and available documents.

Biofeedback, Psychology↗
PubMed1991

Atherosclerosis of the ascending aorta and coronary artery bypass. Pathology, clinical correlates, and operative management.

Analysis of 1735 patients who underwent coronary artery bypass grafting from January 1981 through December 1988 revealed 152 (8.8%) patients with mild (4.5%), moderate (2.2%), or severe (2.0%) atherosclerosis of the ascending aorta. Three distinct pathologic patterns were found. The prevalence of stroke in patients with the severe type of aortic disease prompted development of a new operative technique that has been used in 16 patients. It involves a "no-touch" technique of the ascending aorta whereupon the proximal saphenous vein anastomoses are performed end to side to internal mammary artery grafts. Ages ranged from 49 to 80 years (mean 68.9). The 16 patients had 62 distal artery and vein anastomoses and 26 proximal saphenous vein-internal mammary end-to-side anastomoses. Internal mammary artery free flows ranged from 130 to 420 ml/min. Two hospital deaths were unrelated to the technique. There have been no strokes or recurrences of angina. An inordinately high incidence of main left coronary disease (50%), significant carotid disease (79%), and abdominal aortic occlusive or aneurysm disease (93%) was discovered. Ascending aortic atherosclerosis must be suspected in all coronary bypass patients with associated significant carotid, abdominal aortic, and main left coronary artery disease, aortic wall irregularity on ascending aortic angiography, adhesions between the ascending aorta and its adventitia, pale appearance of the ascending aorta, and minimal bleeding of an aortic cannulation stab wound. A "no-touch" technique that avoids any manipulation of the ascending aorta and that uses the internal mammary arteries as the sole source of blood supply for coronary bypass is an effective method to prevent aortic clamp injury, "trash heart," or stroke from severe ascending aortic disease. Preoperative angiographic visualization of the ascending aorta of all patients undergoing coronary artery bypass is mandatory.

Aged↗
PubMed1992

[Coronary artery bypass grafting by utilizing the artery grafts and bovine internal thoracic artery graft (Bioflow in an elderly patient)].

We performed coronary artery bypass grafting (CABG) in a 80-year-old male with calcified ascending aorta and severe varicose veins utilizing the bilateral internal thoracic arteries and the right gastroepiploic artery under fibrillatory arrest without aortic cross-clamp (aortic no-touch technique). After triple coronary artery bypass grafting was completed, heart failure occurred. Additional Bioflow graft to the circumflex artery restored good cardiac function. The aortic no-touch technique is a useful method for CABG in patients with severe calcified ascending aorta. This experience suggests that the Bioflow graft is a helpful conduit at an urgent situation in CABG.

Aged↗
PubMed1992

[The calcified ascending aorta--preoperative evaluation and intraoperative management].

Aortic calcification was evaluated preoperatively by computed tomography (CT) in 136 of 275 candidates for coronary artery bypass surgery (age range, 30-80) years (mean 60.2 years), including 110 men and 26 women), from April 1989 to March 1991. Calcification in the mid-ascending aortic wall was detected in 20 (14.7%) cases, calcification in all regions of the aorta was more common in patients older than 60 years (22.5%, n = 71), than younger (6.2%, n = 65) (p less than 0.01). Atherosclerosis of the ascending aorta was identified intraoperatively in 25 (18.3%) cases. Practically, the specificity of CT findings was excellent (98.3%), but the sensitivity was less satisfactory (72.0%) due to the presence of atherosclerosis without calcification. In cases of arteriosclerosis of the ascending aorta, great care was taken to prevent embolism secondary to a dislodged atheromatous plaque. The "aortic no-touch technique", with in situ internal thoracic artery and right gastroepiploic artery anastomosis under ventricular fibrillation, was performed in 6 cases, a single aortic cross-clamp was applied in 19 cases, and conventional methods were employed when the ascending aorta was normal or the "no-touch" or "single-clamp" procedure could not be used (control, 111 cases). No neurologic complications occurred in the "no-touch" group, while 2 cerebral infarctions occurred in the single-clamp group (10.5%) and the control group (1.8%) respectively. These differences between groups was not significant. Patients with a calcified ascending aorta are at higher risk for neurologic complications of coronary bypass. The risk can be decreased by minimizing surgical trauma to the ascending aorta by the use of "no-touch" techniques.

Adult↗
PubMed1992

The influence of harvesting technique on endothelial preservation in saphenous veins.

To study optimal conditions of preparation of saphenous veins as coronary artery bypass grafts, segments of saphenous veins were obtained from 29 consecutive patients undergoing coronary artery bypass grafting. The saphenous vein segments were divided into three groups. In Group I, 10 saphenous vein segments were harvested using a "no-touch" technique without any other preparation aids. In Group II, 10 saphenous vein segments were removed while distended at 70-120 mm Hg with a balanced pH electrolyte solution at 37 degrees C. In Group III, consisting of 10 saphenous vein segments, nitroglycerin (1 microgram/ml) was added to the distending solution used in Group II. Samples of saphenous vein were assessed in a blind study using light and scanning electron microscopy to estimate endothelial cell preservation by the three harvest techniques. Saphenous veins receiving only a no-touch dissection technique without distention solution (Group I) revealed significantly better endothelial preservation (P less than 0.005). The administration of distention solution alone, or with nitroglycerin, to saphenous veins in situ using our operative technique during harvest does not appear to protect endothelial-integrity and may be harmful.

Dilatation↗
PubMed1978

"No-touch" cryosurgical enucleation: a minimal trauma technique for eyes harboring intraocular malignancy.

Current surgical approaches for cancer are emphasizing minimal trauma--the so-called no-touch technique of tumor removal. Tumor seeding through the circulatory system seems reasonable, particularly with friable and necrotic tumors. Attempts to reduce metastatic seeds should originate with the original procedure. Enucleation of nontumor eyes with simultaneous intraocular manometry has shown which surgical maneuvers elevate intraocular pressure and how ocular massage can be avoided. Our surgical procedure involves a delicate surgical technique coupled with transscleral cryocoagulation to immobilize the tumor's blood supply.

Cryosurgery↗
PubMedDate not supplied

Adenocarcinoma of the colon and rectum: a review of surgical treatment in 302 patients.

A retrospective study of 302 patients who underwent surgical treatment for colorectal carcinoma from 1952 to 1971 is presented. Resectability rate was 93.7 per cent. Operative mortality rate was 5 per cent. Complications were recorded in 12 per cent of cases. Recurrence at the anastomotic line occurred in 3.31 per cent. The actuarial five-year survival rate was 44.2 per cent for all types of cancer. The "no-touch" technique utilized after 1968 resulted in increased survival of patients who had Dukes' B and C cancers.

Adenocarcinoma↗
PubMed1989

An improved procedure for enzymatic harvesting of highly purified canine venous endothelial cells for experimental small diameter vascular prostheses.

We developed a new device, the vein holder, to improve yield and purity of enzymatic harvests of venous endothelial cells. External jugular veins of mongrel dogs were dissected by a no-touch technique. In vitro length and circumference of the vein segments were decreased to about half of the in situ dimensions. The vein holder enabled mounting of the veins at 80% of their in situ length during endothelial cell harvesting. Trypan blue staining and scanning electron microscopic observations revealed that vein eversion as well as the new vein holder technique successfully removed the endothelium. Endothelial cell harvests by the eversion technique were, however, low and varied in size, viability, and purity. In contrast, the defined handling by the new vein holder technique regularly provided markedly increased amounts of endothelial cells. Most of the cells attached and developed cultures consisting of endothelial cells only, as shown by the uptake of DilAcLDL. Prostacyclin production of confluent cultures was similar to that of native veins. It is concluded that minimal handling, defined mounting, and prevention of overfilling the vein markedly improves endothelial cell harvests, providing greater amounts of viable and purified endothelial cells.

Animals↗
PubMed1989

Allergic contact dermatitis from dental composite resins due to aromatic epoxy acrylates and aliphatic acrylates.

7 patients were occupationally sensitized to dental composite resin products (DCR): 6 dental nurses and 1 dentist. All had a positive patch test to their DCR. 2 independent types of allergy were seen; (a) aromatic epoxy acrylate, and/or (b) aliphatic acrylates. 4 out of 5 patients reacted to BIS-GMA, the most widely used aromatic epoxy acrylate in DCR, but not the dentist. She and 2 dental nurses were allergic to aliphatic acrylates, including triethylene glycol dimethacrylate (TREGDMA) and triethylene diglycol diacrylate (TREGDA). 4 patients were allergic to epoxy resin (ER) (containing mainly MW 340), possibly an impurity in some DCR. 2 patients were also allergic to methyl methacrylate (MMA): the dentist, had been exposed to MMA, but the nurse's exposure was uncertain. 1 patient was also allergic to rubber gloves, 2 to rubber chemicals but not their gloves, and 5 to disinfectants used. diagnosis was delayed as long as 13 years in spite of previous patch testing. Dermatologists need to use the patients' own DCR and the (meth)acrylate series for patch testing. No dental nurses could continue their occupation, but the dentist could occasionally handle DCR if wearing PVC gloves. Dental personnel need to know about the risks of DCR, and use no-touch techniques and protective gloves.

Acrylic Resins↗
PubMed1992

[Use of the Nd:YAG laser in surgical treatment of intracranial tumors].

The Nd:YAG laser was used between January 1989 and March 1991 in 63 cases of intracranial tumours, including 32 meningiomas, 16 gliomas (including 11 glioblastomas), 8 acoustic neurinomas, 11 metastatic brain tumours. In 76.2% of cases very good results were obtained. The Nd:YAG laser was found to be particular value in the treatment of vascular intracranial tumours, especially meningiomas and metastatic tumours. The ability of the Nd:YAG laser to shrink and devascularize these tumours, was useful in neurosurgical operations. The no-touch technique, minimal or no thermal effect on surrounding tissues, better haemostasis and precision allow for easier removal of acoustic nerve tumours. The Nd:YAG laser is very useful in the operations close to the very important for life areas of the brain. The major advantages of laser include reduction of mechanical trauma, reduction of blood loss, and more radical removal of intracranial tumours.

Adult↗
PubMed1986

Endoscopic applications of laser therapy.

Lasers have provided a new surgical tool that has several distinct advantages: It is effective at a distance ("no-touch" technique). It can cut, coagulate, and vaporize depending on the wavelength, energy, and tissue characteristics. Laser energy can be carried through flexible fibers and so can be used in previously inaccessible sites. Endoscopic laser surgery can now be successfully used for control of bleeding, palliation of obstructing tumors, detection in microscopic stages, and possibly as definitive treatment of small malignant tumors. The indications for the use of lasers and their successful application will undoubtedly increase in the near future.

Aged↗
PubMed1992

Operative treatment of colorectal cancer.

Principles of radical surgery for curative treatment of colon and rectal cancer are based on 5-year survival and 2-year local recurrence rates. Depth of invasion, cellular differentiation, vascular invasion, and the location and number of lymph node metastasis influence the 5-year survival rate. Age, type of resection, obstruction or perforation of the primary tumor, and the surgeon's technique influence the 2-year local recurrence rate. Accordingly, high ligation of major vascular pedicle, tumor-free margins, resection of contiguous organs, and oophorectomy should improve survival and an additional benefit may be derived from complete excision of distal mesorectum and the "no-touch isolation technique."

Colorectal Neoplasms↗
PubMed1992

Glove perforation during surgery: what are the risks?

Surgical gloves are important in protecting medical staff from exposure to pathogens during surgery, especially viruses such as hepatitis B and the human immunodeficiency virus. We have studied the incidence and circumstances of surgical glove perforation using a sensitive electronic device. The glove perforation rate during elective general surgery was compared with that seen during an anastomosis workshop, where surgical trainees operated in a laboratory setting. A total of 220 gloves were tested for perforations pre- and postoperatively during general elective surgical procedures. During the surgical training workshop 72 gloves were tested. Fifty-two gloves (24%) were perforated during surgical procedures. Among surgeons, consultants had a significantly lower perforation rate than trainees (26% vs 46%, P < 0.05, chi 2), that for assistants was much lower (9%). The perforation rate for scrub nurses was surprisingly high at 22%. Glove perforation among trainees was significantly lower during workshop procedures than at elective surgery (17% vs 46%, P < 0.05, chi 2), probably because glove perforation occurs commonly at wound closure. Glove perforation remains very common, particularly among surgical trainees. Glove perforation should be reduced by teaching better techniques, especially 'no-touch', particularly for wound closure.

Gloves, Surgical↗