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PubMedDate not supplied

Simultaneous breast augmentation and lift.

Often, both augmentation and mastopexy are necessary to solve the problems of breast ptosis with hypoplasia. These two procedures can be done simultaneously with no increased risks. Patients who have any degree of ptosis may benefit from some lifting of the nipple areola complex if the nipple is not in the central portion of the general contour of the breast mound when seen in the upright position. A simple crescent or eccentric excision in the upper quadrant may be sufficient to lift the nipple-areola complex 1-2 cm. If the nipple needs to be moved more than a couple of centimeters, or if the distance between the nipple and the inframammary crease is already excessive, an inframammary skin excision and redraping will be necessary. We have been using these combined techniques for 20 years with universal patient satisfaction.

Adult↗
PubMedDate not supplied

Benefits from lifting of the lower eyelid.

Lifting the lower eyelid includes removing skin excess of the lid and, most of the time, improves the fat herniation without any removal of the fat because of the tension of the orbicularis muscle obtained with this maneuver. The "lifting" also corrects the arcus marginalis as well as malar bags when they exist. Most of the crow's-feet lines are eliminated by this procedure, and the superior aspect of the nasolabial fold is often considerably smoothed.

Adipose Tissue↗
PubMedDate not supplied

Medial thigh lift and DE.C.LI.VE.

Vertical dermocrurolipectomy is a technique that in Italy has been named "DECLIVE," (which in Latin means something that moves downward). The first medial thigh lift with the DECLIVE technique was done in 1993. Since then, based on its excellent results 50 patients have been operated on, following DECLIVE. Therefore, DECLIVE should be considered just a variant in the medial thigh lift, because resecting a triangular portion from the perivulvar skin, it stops the displacement of the scar downward. Special acknowledgment goes to Ted Lockwood's studies for his role in the development of this technique.

Cicatrix↗
PubMedDate not supplied

In favor of the subcutaneous forehead lift using the anterior hairline incision.

We present our experience with 980 women who had subcutaneous forehead lifts using the anterior hairline incision, during the years 1989-1996. The dissection is easy and fast; the forehead wrinkles are smoothed by the separation of the septa between the frontalis and the skin. The access to the corrugator and the procerus muscles is easy, and the adjustment of the brows to the desired location can be accurate. We use this approach for 90% of women who are eligible for upper face rejuvenation. We have obtained a 96% satisfaction rate; only 1.8% of our patients had minor and reversible complications. The scar, which is supposed to be the main disadvantage of this procedure, is almost unnoticeable, and none of our patients has permanently changed her hairstyle due to this operation. Now, during the peak of interest in forehead lifts with limited scars using the endoscope, is the time to highlight this time-worn, safe, reproducible, and effective approach.

Adult↗
PubMed2002

Hydraulic lift in Acacia tortilis trees on an East African savanna.

Recent studies suggest that savanna trees in semi-arid areas can increase understorey plant production. We hypothesized that one of the mechanisms that explains the facilitation between trees and grasses in East African savannas is hydraulic lift (HL). HL in large Acacia tortilis trees was studied during the first 3 months of the dry season during a relatively wet year (1998) and a very dry year (2000). In 1998, we found distinct diel fluctuation in soil water potential (psi(s)), with increasing values during the night and decreasing again the following day. These fluctuations in psi(s )are consistent with other observations of HL and in A. tortilis were found up to 10 m from the tree. In 2000, during a severe drought, psi(s) measurements indicated that HL was largely absent. The finding that HL occurred in wetter years and not in drier years was supported by data obtained on the delta(18)O values in soil, rain and groundwater. The delta(18)O of water extracted from the xylem water of grasses indicated that when they grew near trees they had values similar to those of groundwater. This could be because they either (1) use water from deeper soil layers or (2) use hydraulically lifted water provided by the tree; this was not seen in the same grass species growing outside tree canopies. While our data indicate that HL indeed occurs under Acacia trees, it is also true that psi(s) was consistently lower under trees when compared to outside tree canopies. We believe that this is because tree-grass mixtures take up more water from the upper soil layers than is exuded by the tree each night. This limits the beneficial effect of HL for understorey grasses and suggests that in savannas both facilitation via HL and competition are active processes. The importance of each process may depend upon how wet or dry that particular site or year is.

Acacia↗
PubMed2006

Laparoscopy-assisted right hepatic lobectomy using a wall-lifting procedure.

This article describes a new technique for performing a laparoscopy-assisted right hepatic lobectomy using a hanger wall-lifting procedure. The patient is placed in the left semi-lateral position. A cholecystectomy and hemi-hepatic vascular inflow control are then performed through a midline incision, through which the resected liver can be removed. Next, the right lower chest and right upper abdominal wall are lifted by two wires vertical to the abdominal wall. Two ports, a 5-mm port in right lateral abdomen for forceps and a 12-mm port just right of the umbilicus for the laparoscope, are inserted. The obtained view of the operative field in the right upper abdominal cavity is thus excellent. The laparoscopy-assisted mobilization of the right hepatic lobe is done with the assistance of a hand inserted through the midline incision, including a dissection of the hepato-renal ligament, the right triangular ligament, and the right coronary ligament. A parenchymal dissection is then performed using the Cavitron Ultrasonic Surgical Aspirator (CUSA) and the resected specimen is passed through the midline incision without any morcellation of the liver. This procedure can minimize the length of the wound, while avoiding the lethal complications associated with pneumoperitoneum.

Hepatectomy↗
PubMed2000

Hemodynamic and pulmonary changes during open, carbon dioxide pneumoperitoneum and abdominal wall-lifting cholecystectomy. A prospective, randomized study.

BACKGROUND: Carbon dioxide (CO2) pneumoperitoneum effects are still controversial. The aim of this study was to investigate cardiopulmonary changes in patients subjected to different surgical procedures for cholecystectomy. METHODS: In this study, 15 patients were assigned randomly to three groups according to the surgical procedure to be used: open cholecystectomy (OC), CO2 pneumoperitoneum cholecystectomy (PP), and laparoscopic gasless cholecystectomy (abdominal wall lifting [AWL]), respectively. A pulmonary artery catheter was used for hemodynamic monitoring in all patients. A subcutaneous multiplanar device (Laparo Tenser) was used for abdominal wall lifting. To avoid misinterpretation of results, conventional anesthesia was performed with all parameters, and the position of the patients held fixed throughout surgery. The following parameters were analyzed: mean arterial pressure (MAP), heart rate (HR), cardiac output (CO), cardiac index (CI), stroke volume index (SVI), central venous pressure (CVP), systemic vascular resistances index (SVRI), mean pulmonary arterial pressure (MPAP), pulmonary capillary wedge pressure (PCWP), pulmonary vascular resistances index (PVRI), peak inspiratory pressure (PIP), end-tidal CO2 pressure (ETCO)2, CO2 arterial pressure (PaCO2), and arterial pH. RESULTS: All the operations were completed successfully. The Laparo Tenser allowed good exposition of the surgical field. A slight impairment of the cardiopulmonary functions, with reduction of SVRI, MAP, and CI and elevation of pulmonary pressures and vascular resistance, followed induction of anesthesia. However, these effects tended to normalize in the OC and AWL groups over time. In contrast, CO2 insufflation produced a complex hemodynamic and pulmonary syndrome resulting in increased right- and left side filling pressures, significant cardiac index reduction, derangement of the respiratory mechanics, and respiratory acidosis. All of these effects normalized after desufflation. CONCLUSIONS: Cardiopulmonary adverse effects of general anesthesia were significant but transitory and normalized during surgery. Carbon dioxide pneumoperitoneum caused a significant impairment in cardiopulmonary functions. In high-risk patients, gasless laparoscopy may be preferred for reliability and absence of cardiopulmonary alterations.

Abdominal Muscles↗
PubMed2001

Video-assisted parathyroidectomy for primary hyperparathyroidism: a new approach involving a skin-lifting method.

BACKGROUND: Recent advances have allowed the performance of parathyroidectomy as an endoscopic procedure. Carbon dioxide (CO2) insufflation can be used to create a working space in the anterior neck, but it has been associated with a number of complications. We have devised a skin-lifting method to overcome these problems. METHODS: Eleven consecutive patients underwent video-assisted parathyroidectomy. Preoperative imaging revealed a solitary adenoma in all 11 cases. A 3-cm oblique incision was made below the clavicle, and a 5-mm incision was made on the lateral neck. After the skin was lifted, video-assisted parathyroidectomy was performed. RESULTS: Surgery required 186 +/- 50 min. No conversions to conventional cervicotomy were needed. Levels of serum calcium and intact parathormone decreased significantly in all patients on postoperative day 1. Laryngeal recurrent nerve paresis and seroma were noted in one patient each. CONCLUSIONS: Our procedure eliminates any potential CO2 problems and offers the advantages of direct manipulation and improved cosmesis. Endoscopic parathyroidectomy should be considered a viable option for the surgical treatment of a solitary adenoma.

Aged↗
PubMed2005

[Combined sinus lift procedure and lateral augmentation. A treatment concept for the surgical and prosthodontic rehabilitation of the extremely atrophic maxilla].

PURPOSE: This paper describes a surgical and prosthetic procedure for treating the extremely atrophic maxilla. It explains a two-staged surgical technique, donor and recipient site morbidity, implant survival, and the implant-retained prosthetic rehabilitation of the patients. PATIENTS AND METHODS: A total of 57 consecutive patients were treated with a sinus lifting procedure and a simultaneous lateral augmentation using autogenous corticocancellous block and particulate bone grafts from the iliac crest. After a 6-month bone healing period, a total of 284 endosteal Titanium screw implants were inserted. Following a 3-month osseointegration period, the implants were exposed and loaded with either fixed or removable prostheses. RESULTS: In three cases a partial bone graft loss was observed; however, enosseous implantation was possible as planned. During the observation period none of the 284 implants was lost; 3 implants exhibited treatable peri-implant infection. Complications at the donor and recipient sites were minimal and did not negatively influence the overall clinical result of the treatment. CONCLUSION: The combination of sinus lift procedure and lateral augmentation for the treatment of the extremely atrophied maxilla proved to be a safe method that produces good and reliable clinical results.

Adult↗
PubMed2004

Cometabolic reduction of bromate by a mixed culture of microorganisms using hydrogen gas in a gas-lift reactor.

The discharge of bromate, a suspected carcinogen, will be restricted in the near future. To assess the possibility of biotechnological treatment of bromate-containing wastewaters, the removal of bromate by chlorate-reducing microorganisms was studied. The removal of bromate and chlorate was studied in laboratory gas-lift bioreactors supplied with hydrogen gas as electron donor in the absence of molecular oxygen. In these reactors, bromate was reduced cometabolically by chlorate-respiring microorganisms. To allow the cometabolic reduction of bromate, a chlorate:bromate molar ratio of at least 3:1 was required. The cometabolic conversion permitted almost complete reduction of bromate into bromide at hydraulic retention times of at least 6 h. Optimal bromate reduction activity was observed at approximately 35 degrees C. The pH optimum was between 7 and 8. Bromate reduction in excess of 80% and a maximum bromate reduction rate of 2.3 g l(-1) day(-1) in a pilot-scale gas-lift bioreactor demonstrates that the process is sustainable.

Air Pollutants↗
PubMed2005

Histological study on sinus lift grafting by Fisiograft and Bio-Oss.

The work aims to provide a histological investigation of Fisiograft, a PLA/PGA copolymer, used as filler for bone defects in humans. The study was performed on biopsies of sinus lifts where Bio-Oss and Fisiograft gel were applied as graft material. Bone regeneration was satisfactory in all sinus lifts, even when Fisiograft was applied alone. Due to remarkable osteoclast activity, Bio-Oss granules were cleared from the majority of biopsy cores. At histology, Fisiograft gel appeared as globes enveloped by fibroblasts, displaying an epithelial-like cell appearance. Due to its solubility in solvents, undegraded Fisiograft (recorded for 7 months or more) did not stain whereas degraded Fisiograft stained positive. The loose connective tissue, that surrounded Fisiograft and bone contained isolated mastocytes. Bone grew inside the loose connective and often reached the surface of Fisiograft by intervening cells. The results seem to indicate that Fisiograft may be considered both a polymer useful for fastening bone substitutes inside a defect and in addition a material capable of prompting bone regeneration, with or without the use of a bone substitute. In addition to space-former and space-maintainer functions, Fisiograft shows potential bone stimulation function, which may be labelled as osteopromotive capability.

Autoradiography↗
PubMed1988

Plaque-lift testing of expression vector lambda gt11 with gold-labeled immunoglobulins.

Colloidal gold particles were coated with affinity-purified antibodies against the human plasma protein, C1 inhibitor, and used to probe for fusion proteins of C1 inhibitor with beta-galactosidase encoded by recombinant bacteriophage lambda gt11 DNA. Plaque-lift tests were done with recombinant proteins immobilized on nitrocellulose applying anti-C1 inhibitor gold particles followed by the silver enhancement treatment. This procedure resulted in a sensitive and specific staining of the recombinant proteins and allowed the selective detection of relevant clones in a complex cDNA expression library. Under optimized conditions, plaque-lift testing was completed within 2.5 h after removal of nitrocellulose filters from the plate. Hence, the immunogold detection method provides an alternative to conventional enzyme- or radionuclide-based screening procedures for cDNA expression libraries.

Animals↗
PubMed1976

Lift traffic patterns in a multi-storey residential block.

This paper describes an exploratory survey throughout the user-day of the free-demand lift traffic patterns in a residential block of flats as a step towards compiling a data set of such traffic patterns in various types of accomodation with a view to producing a lift design guide.

Journal Article↗
PubMed1986

Development of a safety index for manual lifting tasks.

The concept of a safety index (SI) for assigning a worker to a particular manual lifting task is developed, and a simple formula for its calculation is presented. The proposed index is based upon the combined measure of acceptability of the biomechanical and physiological stress responses of the worker to a lifting task. Individual capacity norms, as opposed to the norms usually given based on population percentiles, are also defined. Numerical examples are given to illustrate the SI approach.

Journal Article↗
PubMed1988

Visibility requirements for the driver's stand of lift trucks. Experimental study of drivers' lateral head movements.

Every year, lift trucks are involved in 9000 occupational accidents with stoppage of work. Most of those accidents are due to insufficient visibility from the driver's stand of lift trucks. Draft standards related to this characteristics take into account sideways head movements of from 300 to 600 mm, depending on the proposal. Continuous recording of movements was carried out on eight subjects in a test situation involving loading, unloading and driving the vehicle loaded and unloaded. On average, during 92% of the time driving the vehicle unloaded and 87% of time driving the vehicle loaded, the head is displaced less than 150 mm. Extreme positions are the least utilised: there is a gaussian distribution of movements around the central position. Movements accepted in draft standards are therefore overestimated. These experiments offer a partial interpretation of the differences of mobility observed between each of the four tasks.

Journal Article↗
PubMed1991

Analysis of eye movements in different tasks related to the use of lift trucks.

Fork-lift trucks are frequently involved in industrial injuries that happened during driving. Insufficient visibility is one of the leading causes of occurrence of these accidents. A previous study (Hella et al, 1988) showed that +/- 75 mm is the maximal amplitude of head movements recorded to avoid the mast. However, very little is known about the areas of the forward field of view that are most frequently fixated by the eye. This article presents the results of two analyses of eye fixations during several driving situations of a lift truck that could provide a wealth of useful information for designers and for standardisation. The information it contains is also of interest in analysing visibility from all industrial vehicles.

Journal Article↗
PubMed1981

The effect of systemic morphine upon diffuse noxious inhibitory controls (DNIC) in the rat: evidence for a lifting of certain descending inhibitory controls of dorsal horn convergent neurones.

The effects of exogenous opiates upon diffuse noxious inhibitory controls (DNIC) was investigated in intact anaesthetized rats. 58 convergent neurones, responding to both noxious and innocuous stimuli applied to their cutaneous receptive fields, were recorded at the lumbar level. These cells received A- and C-peripheral fibre inputs as shown by electrical stimulation of their receptive fields and were mainly located in the medial part of the dorsal horn. The immersion of the distal two-thirds of the tail in hot water (52 degrees C) induced strong inhibition of the responses to both A-(23%) and C-(69%) fibres. Post-effects of long duration were commonly observed after cessation of the conditioning stimulus. While systemic injection of morphine at a low dose-range (0.1-1 mg/kg) did not significantly affect the unconditioned responses, the DNIC-mediated inhibitions were profoundly altered. (a) DNIC of responses to C fibres were dose-dependently (P less than 0.01) lifted by morphine: (b) the post-effects observed after cessation of conditioning stimuli were dose-dependently (P less than 0.01) diminished; (c) DNIC of responses to A-fibre were similarly altered but this effect was less significant (P less than 0.05); (d) DNIC of responses to sustained moderate pressure were greatly diminished by morphine (P less than 0.01); and (e) these effects were specific since they were antagonized by the opiate antagonist, naloxone. In addition, they were shown to be stereospecific since while the dextrogyre stereoisomer, dextrorphan, was ineffective the levogyre derivative, levorphanol, induced a significant lifting of DNIC. It is concluded that morphine decreases the supraspinal inhibitory controls of dorsal horn convergent neurones, at least when these controls are triggered by noxious stimuli. Assuming that a basic somatosensory background activity (noise) is transmitted to higher centres by dorsal horn convergent neurones, and that the pain-signalling message is the contrast between the activity of the segmental pool of neurones induced by the noxious stimulus and the DNIC-mediated silence of the remaining neuronal population, it is proposed that, by a reduction in DNIC, low-dose morphine could restore the initial level of background activity, the final result being analgesia.

Animals↗
PubMed1994

Face lifts and sprayed fibrin glue: an outcome analysis of 200 patients.

The use of aerosolised fibrin glue has been evaluated in a group of 100 consecutive patients undergoing face lift procedures and compared to a similar group of 100 consecutive patients who had face lifts but received no fibrin glue. There was a statistically significant decrease in the rate of major haematoma formation and presentation of ecchymosis associated with the use of fibrin glue. The incidence of total complications was unchanged between the two groups, despite the fact that there were no drains or postoperative dressings used in the fibrin glue treated group. Patients found the omission of drains and dressings to be most convenient.

Adult↗