PubMed Health⌕ Search

SEARCH · PubMed Health

Results for “Operative Time”

Explore indexed PubMed citations for clinical trials, systematic reviews and public health research. Read source abstracts and follow each citation to its original PubMed record.

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

At least 235 records · Page 13Linked to original sources
PubMed1992

[Simultaneous en-bloc allotransplantation of pancreas and kidney in the animal model. Comparison of separate organ and en-bloc pancreas/kidney transplantation in swine].

The high technical complication rate of pancreas transplantation requires large animal models to improve clinical transplant survival rates. The pig is a very suitable animal due to its anatomy, physiology and immunology which are similar to humans. In this study a model of en-bloc simultaneous pancreas and kidney transplantation was established which--in contrast to separate transplantation of both organs--decreases preservation time, operation time, and clamp time. Furthermore, the rates of intra- and postoperative complications were reduced compared with separate transplantation. The donor aorta (encompassing celiac axis, superior mesenteric artery, and left renal artery) is anastomosed en-bloc to the recipients aorta in a an oblique-to-side fashion. The portal vein is anastomosed end-to-side to the left common iliac vein. The exocrine pancreatic secretions are drained via duodenocystostomy to allow for monitoring of urinary amylase for rejection. The en-bloc technique is an alternative for pediatric donor organs since the risk of vascular complications is lower compared with separate implantation of the donor vessels. Based on our results in a large animal model the en-bloc technique could be used in adult uremic diabetic patients who receive a combined pancreas-kidney transplant from a pediatric cadaver donor.

Amylases↗
PubMed1992

Radical breast surgery with a contact Nd:YAG laser scalpel.

The use of a contact Nd:YAG laser scalpel during radical and modified radical mastectomy was evaluated in 18 patients with carcinoma of the breast. The laser scalpel performed well as a haemostatic tool, the associated mean blood loss for modified radical mastectomy being 132 ml. Operating time, operative blood loss, laser energy required and postoperative wound drainage were all related to patient obesity, correlating significantly with body weight and/or breast weight. The incidence of axillary seroma was not reduced by laser surgery and occurred in 53% of patients undergoing modified radical mastectomy. The Nd:YAG laser scalpel is an excellent haemostatic tool but it does not appear to have any other advantages over conventional surgery for mastectomy.

Adult↗
PubMed2004

[Bladder neck contraction after radical prostatectomy: morbidity and risk factors].

We retrospectively analyzed the morbidity and risk factors of bladder neck contraction (BNC) after retropubic prostatectomy. Of 99 consecutive patients who underwent radical retropubic prostatectomy between 1995 and 2001, 10 (10%) developed anastomotic stricture after surgery. BNC was diagnosed 7 months on average after the surgery. Nine patients were successfully treated by cold-knife incision, but 5 required additional incision against the recurrence of BNC. None of them revealed newly diagnosed stricture or incontinence. Thirteen potential risk factors including age, stage, PSA, neoadjuvant treatment, pathology, intraoperative blood loss, operation time, operator, nerve sparing, extravasation of urine, marginal status, the year of operation, and the method of ureterovesical anastomosis were evaluated using univariate and multivariate analysis. The BNC rate was increased in patients with longer (more than 4 hrs) operations and excessive bleeding (more than 1,000 ml) (p=0.0027, respectively). The year of operation (before 1998, p=0.0015), the method of ureterovesical anastomosis (p=0.0017), operator experience (less than 5 cases, p=0.0056), and neoadjuvant treatment (p=0.09) were also risk factors. In multivariate analysis, the year of operation (p=0.03) and operator experience(p=0.04) were strong predictors of BNC. The skill levels of surgeons and institutes are expected to decrease BNC.

Adenocarcinoma↗
PubMed2006

Primary total hip arthroplasty for acetabular fracture.

OBJECTIVE: To explore the operative indications and operative methods of primary total hip arthroplasty for acetabular fracture and to observe the clinical curative effect. METHODS: We retrospectively summarized and analyzed the traumatic conditions, fracture types, complications, operative time, operative techniques, and short term curative effect of 11 patients (10 males and 1 female, with a mean age of 42.4 years) with acetabular fracture who underwent primary total hip arthroplasty. RESULTS: The patients were followed up for 6-45 months (mean=28 months). Their average Harris score of postoperative hip joint was 78. CONCLUSION: Under strict mastery of indications, patients with acetabular fracture may undergo primary total hip arthroplasty, but stable acetabular components should be made.

Acetabulum↗
PubMed1990

Transurethral resection versus transurethral incision of the prostate. A prospective randomized study.

In this ongoing study, patients with an estimated prostate size of no more than 20 gm are randomized to undergo either transurethral resection of the prostate (TURP) or transurethral incision (TUIP) at the 6 o'clock position. To date, 93 patients have been included, and 3 months postoperatively, 80 to 90 per cent of the patients in each group reported improvement. There was also a significant decrease in symptom scores and a significant increase in maximum urinary flow rate, with great variation within each group but without difference between the groups. In both groups, there appears to be some deterioration over time. Operating time, estimated blood loss, time to catheter removal postoperatively, and duration of postoperative hospital stay were all significantly in favor of TUIP. Loss of ejaculation was reported by 37 per cent of patients after TURP and by 13 per cent after TUIP (not statistically significant). There was no difference between the groups in the need for further surgery. Therefore, TUIP is recommended as an alternative to TURP in patients with small prostates.

Adult↗
PubMedDate not supplied

Anaerobic infection after total hip replacement. Report of three cases.

In a series of 387 consecutive total hip replacements there were nine infections (2.3% infection rate). Three of the infections were caused by an anaerobic gram positive cocci, Peptococcus. This is an increased incidence of infection for this previously rare pathogen. The anaerobic infections occurred despite prophylactic antibiotic coverage with Keflin. No causative factors such as hospital, operating time, operating personnel, medical disease, or blood loss could be associated with the observed anaerobic infections. Two of the anaerobic infections appeared late. This is consistent with other reports of anaerobic infections in implants. Drainage after total hip arthroplasty operation must be cultured for anaerobes as well as aerobes, especially late infections in patients on prophylactic antibiotics. Drainage which is sterile to aerobic culture should alert the physician to a possible anaerobic infection.

Adult↗
PubMed1993

[A clinical study on respiratory management using a respirator with nasal intubation in patients undergoing surgery for esophageal cancer].

We analyzed a postoperative respiratory management using a respirator with nasal intubation in 55 patients who underwent subtotal esophagectomy through thoracic and abdominal approach between April 1984 and December 1989. In 21 cases (38%) the period using a respirator was within 3 days, in 24 cases (44%) during 4-7 days, and in 10 cases (18%) over 8 days. Postoperative pulmonary complications occurred in 20 cases (36%); pneumonia in 7 cases (13%), lung edema in 12 cases (22%), atelectasis in one case (2%). Two patient died after surgery, one from acute myocardial infarction, another from multiple organ failure after anastomotic leakage. The period using a respirator was positively correlated with the operative blood loss, transfusion and post-operative infusion, postoperative pulmonary complications positively correlated with the operative time, the anesthetic time, operative blood loss, transfusion and postoperative infusion as well as with preoperative complications and renal dysfunction too. In 120 cases before 1984, postoperative pneumonia occurred in 42 cases (36) and 19 cases (16%) of them died. These results suggest that our respiratory management using a respirator is effective in perioperative period of esophageal cancer.

Aged↗
PubMed2006

Robotic cholecystectomy: learning curve, advantages, and limitations.

BACKGROUND: Robotic cholecystectomy is safe, feasible procedure. Initial studies showed significant set up time and operating time but no clear clinical advantage of the robotic involvement. We have investigated the learning curve, advantages and limitation of the procedure. MATERIAL AND METHODS: We reviewed all (n = 51) robotic cholecystectomies performed between July 2004 and December 2005. The surgery was performed using the da Vinci system. We recorded operative time, setup time of robotics instrumentation, conversion to laparoscopic or open cholecystectomy and complication of the procedure. RESULTS: Forty-eight of the 51 procedures (94%) were completed robotically. We did not experience any significant complications directly related to robotics surgery. The mean +/- SD operating time was 77 +/- 22.3 min. The mean setup time for robotics (from incision until robot was in place, including draping the robot) was 24 +/- 8.8 min. However, the setup time significantly improved as we gained more experience: from 30.6 +/- 10.7 min (first 16 cases) to 18.3 +/- 4.0 min (cases 33-48). The mean robotic time was 34 +/- 16.1 min. We observed no significant improvement in robotic procedure time. CONCLUSIONS: Robotic cholecystectomy offers significant advantages such as three-dimensional view, easier instrument manipulations and possibility of remote site surgery. We observed some shortcomings of robotic surgery such as need for larger and additional ports, and need for undocking the machine in case of cholangiography or change of patient position. Our data shows that the learning curve is between 16 to 32 procedures to significantly decrease the setup time and total operating time.

Adolescent↗
PubMed2002

Evaluation of octylcyanoacrylate for wound repair of clinical circumcision and human skin incisional healing in a nude rat model.

PURPOSE: Alternative methods of circumcision wound closure have been studied to decrease repair time and complications, and improve cosmesis. This study includes a clinical and a laboratory research portion. Clinical parameters, wound outcome, closure time and operative time were compared for octylcyanoacrylate and suture approximation of circumcision incisions. An in vivo incisional model using human foreskin was used to compare the wound breaking strength of octylcyanoacrylate and suture repair. MATERIALS AND METHODS: Circumcision incisions were closed with suture or octylcyanoacrylate. Wound closure time and operating room time were recorded. Patients were evaluated 1 and 12 weeks postoperatively. Foreskin samples from another group of patients were engrafted to an immunodeficient rat and allowed to heal. Incisions were made in the human skin and the wounds were repaired with sutures or octylcyanoacrylate. After 7 days breaking stress was tested and healing was evaluated by histological testing. RESULTS: Optimal wound healing was noted in all patients 1 week after surgery. Scarring was absent in the octylcyanoacrylate group. Octylcyanoacrylate closure time was significantly shorter than suture time (p <0.001). Mean total operating room time for octylcyanoacrylate plus or minus standard deviation was shorter than for suture (19.4 +/- 0.51 versus 26.9 +/- 0.94 minutes, p <0.001). Octylcyanoacrylate wound breaking stress was equivalent to suture on tensiometry. Histological testing revealed normal healing in all wounds. CONCLUSIONS: Circumcision wounds may be closed by octylcyanoacrylate with shorter wound closure and operative time than by suture. In an animal model of human skin healing, wound breaking stress after octylcyanoacrylate closure was equivalent to suture repair. Octylcyanoacrylate may be a useful alternative to suture closure for circumcision incisions.

Adolescent↗
PubMed1990

Optimal therapy for patients with biliary atresia: portoenterostomy ("Kasai" procedures) versus primary transplantation.

As the results with liver transplantation have improved, a controversy has arisen regarding the precise role of a portoenterostomy in the treatment of infants with biliary atresia. The controversy centers around three issues: (1) the short- and long-term survival rates achieved with both procedures, (2) the influence of a portoenterostomy on a subsequent transplant, and (3) the shortage of suitable liver donors for very small infants. To address these questions, we retrospectively reviewed the charts of 48 children with biliary atresia who underwent liver transplantation and compared these results with 35 children transplanted for other liver diseases. As a group, the biliary atresia patients had significantly lower mean body weights and ages and spent a significantly longer time on the waiting list. In addition, significantly more of the biliary atresia patients had undergone prior abdominal surgery when compared with the non-biliary atresia group. There was no difference in the intraoperative variables of mean anesthesia time, mean operative time, mean anesthesia preparation time, nor the mean amount of blood transfused intraoperatively between the two groups. However, when the biliary atresia patients who had undergone a portoenterostomy with a stoma were compared with either the biliary atresia patients who did not have a stoma created as part of their portoenterostomy or the non-biliary atresia patients, significant differences were noted in mean total anesthesia time, mean operative time, and the mean amount of blood transfused intraoperatively. The survival rate of the biliary atresia patients was significantly greater than the non-biliary atresia patients.(ABSTRACT TRUNCATED AT 250 WORDS)

Algorithms↗
PubMed1993

[Liver and liver segment transplantation in adults and children. Experiences with the first 50 cases].

The experience with 50 liver transplants performed in 42 patients within a 16 months period is reviewed. There were 15 transplantations in 12 children and 35 in 30 adults. The series was analysed regarding the source of transplant, i.e. living related (LR) n = 2 or cadaver (CAD) n = 48, graft size i.e. full size (FS) n = 34, reduced size (RED) n = 12 and split grafts (SG) n = 4. Regarding the preservation time or operating time there was no statistically significant difference between the groups. The overall function rate was 88%, 94% for FS and 73.4% for the remaining partial grafts (RED and SG). The difference was not significant (p = 0.062). Biliary leakage occurred in one (2%) reduced graft. Hepatic artery complications (kinking, intima dissection) were encountered in two (4%) patients receiving a FS. It is concluded that the use of partial liver grafts is a safe procedure to alleviate organ shortage while preservation time and operating time are not prolonged as compared to the transplantation of full size grafts.

Adolescent↗
PubMed2001

Anterior decompression and fixation versus posterior reposition and semirigid fixation in the treatment of unstable burst thoracolumbar fracture: prospective clinical trial.

AIM: To compare the anterior and posterior surgical approach in the emergency treatment of unstable burst thoracolumbar fracture. METHODS: Twenty-five patients with unstable thoracolumbar fracture underwent either anterior neurodecompression and fixation (n=13) or posterior reposition and semirigid fixation by hook-rod with pedicle screw fixation (n=12), depending on the type of implants available at the time of operation. Neurologically injured patients were operated on within the first 8 hours and neurologically intact patients within the first 2 days after the fracture. Neurological improvement was assessed according to the American Spinal Injury Association grading scale and the Prolo economic/function outcome scale. We also recorded operation time, blood loss, cosmetic outcome, hospital stay and cost, complications, and donor site pain. RESULTS: There were no significant differences between the two groups in either neurological improvement (p=0.86) or favorable economic or function outcome (p=0.54 and p=0.53, respectively). The operation time was shorter in the posterior approach group than in the anterior approach group (median 174 min, range 130-215 vs median 250 min, range 200-295, respectively, p<0.001). The blood loss was smaller in the posterior approach group (median 750 mL, range 500-1,10, vs median 1,362 mL, range 1,150-1,50, in the anterior approach group; p<0.001). The posterior approach group also had better esthetic outcome, lower hospital cost, lower complication rate, and no donor site pain. CONCLUSION: Both surgical techniques were equally effective in neurological improvement and functional outcome. Posterior surgery can be recommended in emergency neurodecompression and fixation of unstable thoracolumbar fractures because of the shorter operation time and smaller blood loss.

Adolescent↗
PubMed2005

A study of the natural biodegradation of two-phase olive mill solid waste during its storage in an evaporation pond.

A study of the natural biodegradation of two-phase olive mill solid waste (OMSW) during its storage in an evaporation pond was carried out. This system is traditionally used as the final disposal of this waste or constitutes a previous stage before being processed by cogeneration or anaerobic digestion processes. A laboratory-scale pond with a total volume of 520 l was used. The experiment was carried out between December 2002 and August 2003 covering a total period of 269 days. During the experiment, the variations of temperature (outside and inside the pond), the effective volume of the OMSW in the pond, moisture content, total solids (TS), volatile solids (VS), the total chemical oxygen demand (TCOD), total volatile acids (TVA), pH and cumulative methane production as a function of the operation time were evaluated. The experimental results obtained showed that the characteristics of the two-phase OMSW in the pond were dependent on the time of operation and temperature. During the experiment, three periods were clearly observed and differentiated: (a) An initial period with a rapid reduction of moisture content and effective volume, with an increase of TS, VS and TCOD removals, a decrease of pH and an increase of TVA and methane production until day 21. (b) A second period of slow decrease of moisture content and effective volume, due to the decrease of the ambient temperature. This period took place between day 21 and days 120-150 of assay, and it was characterised by a slight change in the OMSW properties. (c) A third period where the characteristics of the waste in the pond changed considerably due to the increase of the temperature outside the pond. The methane gas production also showed an increase due to the increase of methanogenic activity with the increase of temperature. An empirical model to describe the changes of two-phase OMSW characteristics and methane production with the operation time was developed. The proposed model, based on the use of polynomial equations, took into account the influence of the temperature and fit adequately into the experimental results obtained. It was found that the pond could probably be used as preliminary treatment of two-phase OMSW before its anaerobic digestion process, because a maximum conversion of organic matter to TVA was obtained after an operation time of around 200 days.

Biodegradation, Environmental↗
PubMed2006

Revision total knee arthroplasty does not increase PACU utilization.

UNLABELLED: The hospital records of 232 consecutive cases of patients undergoing primary and revision total knee arthroplasty were analyzed to determine differences in operating room time, postanesthesia care unit time, operating room narcotic usage, and postanesthesia care unit narcotic usage between the two groups. The average operating room time for a surgeon performing revision total knee arthroplasty on a patient was greater than that for a primary total knee arthroplasty. However, there was no difference in average postanesthesia care unit time nor operating room and postanesthesia care unit narcotic usage. When stratified to anesthetic type and perioperative pain intervention, there was no difference in any of the measured parameters between the primary and revision groups. Thus, even with longer operating times, a patient undergoing revision total knee arthroplasty did not utilize more postanesthesia care unit time, nor more perioperative narcotics, than a patient undergoing primary total knee arthroplasty. LEVEL OF EVIDENCE: Therapeutic study, Level III (retrospective comparative study). See the Guidelines for Authors for a complete description of levels of evidence.

Aged↗
PubMed1997

[Prognosis of premenopausal patients with operable breast cancer related to the timing of operation].

OBJECTIVE: Determining the fact if the timing of mastectomy during the menstrual cycle influences the prognosis of premenopausal women with breast cancer. METHODS: 67 cases of breast cancer women with regular menstruation were reviewed and analyzed retrospectively by medical statistics in terms of 5-year overall survival, 5-year relapse-free survival and 5-year local-regional relapse survival. RESULTS: Even though the 5-year overall survival and 5-year local-regional relapse survival were not different statistically, timing of operation did have a tendency to influence outcome. Meanwhile, estrogen receptor played the most important role in influencing the above-mentioned aspects in comparison with other factors. CONCLUSION: We believe that operation during the last menstrual period might have influence on long-term survival of premenopausal breast cancer patients, but prospective studies are needed.

Adult↗
PubMedDate not supplied

The effects of dilute epinephrine saline irrigation on the need for tourniquet use in routine arthroscopic knee surgery.

A prospective, randomized, double-blinded study was performed to determine whether dilute epinephrine saline irrigation (1 mg/l) delivered by gravity flow would significantly reduce the need for tourniquet use during routine arthroscopic surgery. One hundred five patients requiring straightforward arthroscopic knee surgery were randomly assigned to either an epinephrine group that received dilute epinephrine irrigation by gravity flow or to a placebo group that received normal saline irrigation by gravity flow. The need for tourniquet use and the tourniquet time, total operative time, and volume of irrigation fluid used were documented and compared between the two groups. A tourniquet was required 50% less often in the epinephrine group than in the placebo group. This difference was found to be statistically significant using the Student's t-test (P < 0.008, alpha < or = 0.05). If a tourniquet was required, the presence of dilute epinephrine in the irrigation fluid did not affect the overall tourniquet time or the ratio of tourniquet time to total operative time. We believe this study proved that dilute epinephrine irrigation is effective in decreasing the need for tourniquet use during routine arthroscopic knee surgery.

Adult↗