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[Study on the level of negative pressure of closed suction drainage of the peritoneal cavity].

An animal experiment and clinical investigations have been done to choose a suitable negative pressure of closed suction drainage of the peritoneal cavity. The results indicated that the efficiency of routine portable bulb suction devices giving 5.6-16 kPa was lower than vacuum bottles made by our hospital giving 58.86-73.15 kPa. This suggested that the level of negative pressure of the portable bulb suction devices can be increased to 58.86 to 73.15 kPa. The best one is 58.86 kPa.

Drainage↗

Efficacy of closed wound suction drainage after single-level lumbar laminectomy.

The use of closed suction drainage after spinal surgery remains controversial. The purpose of this study was to determine the indications for closed suction drainage after single-level lumbar surgery. Two hundred patients who were scheduled to undergo single-level lumbar surgery without fusion were prospectively randomized into two groups. One group had a closed wound suction drain placed deep to the lumbodorsal fascia before routine closure, whereas the second group had no drain placed. Hemostasis was achieved in all patients before the surgeon had knowledge of the randomization outcome. All drains were removed on the 2nd postoperative day, and the amount of drainage was recorded. After surgery, the patients were evaluated for signs and symptoms of continued wound drainage, hematoma/seroma formation, and/or infection as well as evidence of an acquired neurologic deficit. One hundred three patients had a drain placed before closure and two patients developed postoperative wound infection, both of which were successfully treated with orally administered antibiotics. Of the 97 patients who had no drain placed after the surgical procedure, one patient developed a postoperative wound infection that was treated with surgical incision and drainage, as well as intravenously administered antibiotics. Statistical analysis revealed that the presence or absence of a drain did not affect the postoperative infection rate. No new neurologic deficits occurred in any postoperative patient. The use of drains in single-level lumbar laminectomy without fusion did not affect patient outcome. There was no significant difference in the rate of infection or wound healing and no patient developed a postoperative neurologic deficit.

Adult↗

[Evaluation of small intestine mucosal biopsies obtained simultaneously by suction capsule and endoscopic forceps in children with suspected enteropathy].

The aim of the study was to compare biopsy specimens obtained by suction with those obtained by endoscopy morphometrically and histologically in order to evaluate their adequacy for histological interpretation. For this, 23 children with suspected enteropathy underwent upper gastrointestinal endoscopy. For histological evaluation, biopsies were assessed for orientation, depth, length, presence of Brunner's glands and/or lymphoid follicles and presence of artifact. The mucosa total height and villi height were evaluated for morphometric assessment. The results of all the analysed parameters were not statistically significant, except for the presence of Brunner's glands that were most evident in endoscopic biopsies. Although, the suction capsule biopsies and the endoscopic ones were appropriate for histological interpretation in 91.3% respectively, the difference was not statistically significant. Based on the morphometric analysis, the mucosa total height and the villi height values in both biopsy techniques were not statistically significant different. The small intestine mucosal biopsies obtained by endoscopy compared with those obtained by suction capsule were adequate for histological interpretation.

Adolescent↗

Laparoscopic adrenalectomy: advantages of an atraumatic suction grasper.

Laparoscopic adrenalectomy still presents some technical problems. The impossibility of directly grasping the gland is the main difficulty. To overcome this problem, we have begun to use an atraumatic suction grasper. From September 1995 to December 1997, 15 laparoscopic adrenalectomies were performed. Group 1 comprised 8 patients operated on without the atraumatic suction grasper; group 2 consisted of 7 patients who underwent a laparoscopic adrenalectomy with the use of this new device. The surgical technique with the use of an atraumatic suction grasper is described. No significant difference was noted between the two groups except in the operative time, which was reduced in group 2, and in the surgeon's comfort. The reported advantages are a direct grasp of the adrenal gland without the risk of squeezing, rupture, or bleeding; a better exposure of the adrenal vessels; and shorter operating time.

Adrenal Gland Neoplasms↗

A complete suction system for operative surgery.

A versatile suction system utilizing a hand-held suction head with on-off control is described. Interchangeable nozzles and guards adapt the sucker to work appropriately in most operative situations.

Humans↗

A safe and effective disposable low pressure suction drain.

The physical and microbiological properties of a new disposable suction drainage system have been investigated under clinical and laboratory conditions. The system appears to have overcome the disadvantages associated with previous disposable and reusable low pressure suction drainage systems for use after surgical operation in that this system effectively prevents reflex and retrograde contamination.

Bacteria↗

Randomized clinical trial of suction versus standard clearance of the diathermy plume.

BACKGROUND: Diathermy smoke contains complex hydrocarbons and organic material, and may contain viable tumour cells or viral particles. These particles measure from 0.05 to more than 25 microm, and long-term exposure to such particles may have adverse effects on health. This study investigated whether a suction clearance device reduces the amount of smoke reaching the surgeon's mask. METHODS: This was a randomized clinical trial in which subjects were randomized to standard diathermy equipment (group 1) or a diathermy smoke extraction system (group 2). All patients underwent thyroid or parathyroid surgery with standard anterior cervical collar incision and division of the strap muscles. The difference in the amount of smoke reaching the level of the operator's mask was measured by means of an aerosol monitor. RESULTS: Fifteen patients were randomized to each group. The mean amount of smoke detected at the level of the operator's mask was 0.137 mg/m(3) in group 1 and 0.012 mg/m(3) in group 2 (P < 0.001). The maximum amount detected was 2.411 and 0.255 mg/m(3) respectively (P < 0.001). There were no significant differences between the groups in terms of incision time or background particles measured before and after surgery. There was no correlation between gland weight and incision time or amount of smoke detected. CONCLUSION: Suction clearance of the diathermy plume resulted in a significant reduction in the amount of smoke reaching the level of the operator's mask. Although the risk of diathermy smoke inhalation is currently unknown, use of such a system appears advisable.

Adult↗

Randomized clinical trial comparing axillary padding with closed suction drainage for the axillary wound after lymphadenectomy for breast cancer.

BACKGROUND: After axillary lymphadenectomy for breast cancer, a suction drain is routinely inserted into the axilla to prevent seroma formation. This drain is an obstacle to reducing hospital stay after breast-conserving surgery. This was a prospective randomized clinical trial to assess the safety and results of axillary padding without the use of a drain. METHODS: Between May 2001 and August 2003, 100 women were randomly allocated axillary padding without a drain or with the use of an axillary suction drain. Prospective assessments were made of morbidity, pain, shoulder mobility, quality of life and medical costs including length of hospital stay. RESULTS: Using axillary padding significantly reduced the mean (s.d.) length of hospital stay (1.8(1) versus 4.5(2) days, P < 0.001). Postoperative complications, pain, shoulder mobility and quality of life were similar in the two groups. There was no difference in the duration of the two procedures. CONCLUSION: Axillary padding after axillary lymphadenectomy was feasible and safe, without a drain, and shortened hospital stay.

Axilla↗

Inflation lung mechanics deteriorates markedly after saline instillation and open endotracheal suctioning in mechanically ventilated healthy piglets.

INTRODUCTION: Non-bronchoscopic bronchoalveolar lavage is an alternative to diagnostic bronchoscopy in pediatric patients, as fiberoptic bronchoscopes with aspiration channels are too large for small infants. There are many variations of the method in clinical practice, and saline instillation followed by open endotracheal suctioning is still commonly used. Lung function can deteriorate with these procedures, and we have investigated the effects on lung mechanics and oxygenation in healthy piglets. METHODS: The lungs of anesthetized and mechanically ventilated piglets were recruited with CPAP 35 cmH2O. Thereafter we instilled 5 ml of saline into the endotracheal tube, followed by three breaths from the ventilator. Saline was retrieved through a suction catheter wedged far distally in the airway. The procedure was followed by a new recruitment maneuver. Complete inspiratory/expiratory pressure - volume loops (PV-loops) were obtained just before and 5 min after saline instillation. Arterial blood gases were collected at equivalent times in 14 similar piglets submitted to exactly the same procedure. RESULTS: The inspiratory limb of the PV-loops changed markedly, as the lower inflection point was displaced towards higher pressures (P=0.004), and hysteresis measured at 15 and 30 cmH2O increased (P=0.004 and P=0.012, respectively). Although PaO2 decreased significantly (P=0.001), values after saline instillation/suctioning were still in the high normal range, that is, 22.2 +/- 2.6 kPa. CONCLUSIONS: Opening pressures of the lungs increase markedly after saline instillation/suctioning in healthy piglets. In this situation, adequate recruitment maneuvers and PEEP might prevent lung collapse and deteriorations in arterial oxygenation.

Animals↗

Closed-suction drainage versus no drainage following radical abdominal hysterectomy with pelvic lymphadenectomy for stage IB cervical cancer.

Over a 7-year period from 1987 to 1994, 120 patients consecutive patients with FIGO stage IB invasive cervical cancer who underwent type 3 radical abdominal hysterectomy and bilateral pelvic lymphadenectomy had either Jackson-Pratt closed-suction drainage (Group 1, patients 1-60) or no drainage (Group 2, patients 61-120). All surgeries were performed by the author in a uniform manner. No increase in postoperative pelvic infection, fistula, or lymphocyst formation was noted in the group of patients with no drainage following radical hysterectomy and lymphadenectomy. Routine closed-suction drainage following radical hysterectomy and pelvic lymphadenectomy may be safely omitted.

Adult↗

Blood pressure changes validate phase related external suction, a controlled method for stimulation of human baroreceptors.

Phase related external suction (PRES), a new controlled method for manipulating activity in human baroreceptors, applies precisely timed bursts of suction and pressure within the cardiac cycle through an external neck cuff. Seven healthy adult men participated in 32 pseudo-random trials of baroreceptor stimulation and inhibition. Blood pressure was assessed both intra-arterially and with a noninvasive device. In the present study, PRES baroreceptor stimulation elicited invasively measured blood pressure decreases of about 2.5 mmHg (0.33 kPa) and heart rate decreases of about 5 beats,min-1, while baroreceptor inhibition increased invasively measured blood pressure by about 1.5 mmHg (0.20 kPa) and heart rate about 2.5 beats.min-1. It was concluded that PRES is an effective method for baroreceptor manipulation with weaker size effect but better control of nonspecific factors in human subjects than other baroreceptor manipulation techniques. The noninvasive blood pressure measurement device was less sensitive to experimental variation than was the invasive device.

Adult↗

Absence of arylsulphatases A and B in suction blister fluid interstitial fluid and serum.

Suction blisters were raised on human skin. The blister fluid was collected for enzymic assay and the epidermis over the bullae was removed before further suction of interstitial fluid. Preliminary work indicated the presence of arylsulphatases A and B in epidermis, and the same assay procedure with 4-methylumbelliferyl sulphate as substrate was used. There appeared to be no enzymatic activity in blister fluid, interstitial fluid and serum.

Arylsulfatases↗

Unrecognized hazards of surgical electrodes passed through metal suction-irrigation devices.

Surgical electrodes, passed through metal suction-irrigation devices, pose significant risks for unrecognized visceral burns through capacitively coupled current using monopolar electrosurgery. Plastic cannulas (and reducers) should be avoided with the metal suction-irrigation electrode; an all-metal trocar cannula confers limited safety. With surgeon education and advances in engineering, the potential for unrecognized visceral injury with capacitive coupling can be eliminated.

Burns↗

Electrical spike potentials of the small bowel: a comparative study of recordings obtained from muscular implanted and intraluminal suction electrodes.

Electrical spike potentials from the canine duodenum have been recorded from intramuscular implanted and intraluminal suction electrodes. There was a significantly greater amplitude of the spike potentials recorded from implanted electrodes, otherwise the potentials were identical in number, duration and time of onset. Thus spike potentials recorded from suction electrodes, as used in clinical motility studies, accurately represent the event within the muscular layer.

Action Potentials↗

Telescopic suction tube for microsurgery.

An adjustable telescopic suction tube has been developed for microsurgery. Owing to this innovation, the surgeon can easily set the suction tube to a suitable length by gently pulling the end of the telescopic tube out or in.

Equipment Design↗

Fat-suction of the submental and submandibular regions.

The author presents a clinical classification of fat-suction cases in which treatment of excessive adiposity of the face and neck is discussed. Selection of the patient is a very important preoperative procedure. Fat suction is performed only on the adipose tissue lying between the skin and the platysma muscle and is not indicated for fat lying below the muscle structures. The author presents several improvements on the Illouz technique in comparison with more conventional lipectomy surgical procedures.

Adipose Tissue↗

Experience with "lipolysis": the Illouz technique of blunt suction lipectomy in North America.

"Lipolysis" or blunt suction lipectomy for modest to moderate deformities of localized fatty deposits has been carried out on a series of North American patients. The American patients were felt to be larger than the French patients with whom the procedure was developed, and thus required larger removals. Many patients showed a substantial drop in hematocrit levels following this procedure. Drains may add 400 ml to the blood loss. An obvious third space shift occurred into the operated area and can be of noteworthy magnitude. This often required hospitalization and colloid replacement. It should be anticipated that blood may have to be given. On the basis of our experience in North American patients, we have lowered our expectation for ambulatory discharge to patients undergoing removals of 650 ml or less. This may prove to be too optimistic on occasion. The "lipolysis" technique did not cause any seroma formation in patients as reported for other suction-assisted lipectomy techniques. All patients sensed early anxiety and then disappointment at the lack of "instant" results, and worry over uneven areas during weeks 2 through 6 and required constant reassurance. Prolonged massage therapy bridged this period both physically and psychologically, lightening the burden of both surgeon and patient.

Adipose Tissue↗