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PubMed1986

Follicular aspiration using a syringe suction system may damage the zona pellucida.

The incidence of the formation of cracks in the zona pellucida during aspiration was assessed by comparing two methods of aspirating follicular contents by suction: manual aspiration by syringe and mechanical aspiration by pump. Of 36 patients whose follicles were evacuated manually using syringes, 18 had at least one damaged oocyte. Of 38 other patients whose follicles were aspirated by pump, only one had an oocyte with a cracked zona pellucida. Four patients had their oocytes aspirated by both syringe and pump. In all four, the oocytes were intact when aspirated by the pump, but one oocyte was damaged in three of four cases when the follicles were aspirated using syringes.

Cell Separation↗
PubMed1997

Open surgery of giant paraclinoid aneurysms improved by intraoperative angiography and endovascular retrograde suction decompression.

In three consecutive cases of giant left sided paraclinoid aneurysms we employed an endovascular retrograde suction decompression technique in combination with intra-operative angiography. A double-lumen balloon catheter was placed in the left internal carotid artery by the transfemoral route. After balloon inflation and placement of a temporary clip distal to the aneurysm blood was aspirated and the aneurysm collapsed. Thus further dissection of the aneurysm could easily be achieved and clips could be placed. Afterwards real-time digital subtraction angiography was performed. Intra-operative angiography led to clip repositioning in all cases either due to a clip induced stenosis of the parent vessel, or because of incomplete aneurysm obliteration. Afterwards successful clipping could be confirmed in all cases. Outcome was excellent in one case, good in the other. The third case, extremely complicated by an accompanying craniopharyngioma, showed a satisfactory outcome, but presented new neurological deficits.

Cerebral Angiography↗
PubMed1978

[Small bowel obstruction: decompression by suction through an enterotomy (author's transl)].

Decompression using a sucking apparatus with many large openings, inserted through an enterotomy, is a fast and suitable method. The danger of wound infection can be considerably reduced by careful technique and by antibiotics. Nevertheless, open suction should be used only when the peritoneal cavity is already infected, or when closed decompression by retrograde stripping into the stomach is not possible.

Humans↗
PubMed1994

Development of a transcutaneous blood-constituent monitoring method using a suction effusion fluid collection technique and an ion-sensitive field-effect transistor glucose sensor.

The paper describes a method for the transcutaneous monitoring of blood constituents. It combines the use of a suction effusion fluid (SEF) collecting technique with a silicon on sapphire/ion-sensitive field-effect transistor (SOS/ISFET) biosensor. SEF is directly collected by a weak evacuation through skin from which the stratum corneum has been removed. An SEF collecting cell with a stainless-steel mesh at the bottom is kept in a weak vacuum condition, and SEF is sucked up through the mesh and deposited in a reservoir above. An ISFET glucose sensor is able to detect glucose concentrations in very small SEF samples through the use of two small ISFETs and an immobilised enzyme membrane. The reliability of transcutaneously obtained SEF was first confirmed in an experiment using rabbits. A clinical analyser was used to determine levels of glucose, urea nitrogen and creatinine in SEF obtained transcutaneously; these results are compared with results obtained by the same analyser directly from sera. The ISFET glucose sensor was successfully tested on human subjects for the monitoring of blood glucose levels. During these tests, glucose level changes in the SEF followed actual blood glucose level changes with a slight time delay. Results suggest the feasibility of non-invasive, transcutaneous monitoring of low molecular weight substances in the blood without the use of ordinary blood sampling.

Animals↗
PubMed1982

The presacral space as a collector of fluid accumulations following rectal anastomosis: tolerance of rectal anastomosis to closed suction pelvic drainage.

The amounts of fluid that collect in the presacral space after rectal anastomosis were measured in 88 such patients (85 one-stage, three two-stage) treated by one surgeon with closed suction presacral space drainage. Fluid accumulations ranged from 0 to 1816 ml (mean 258 ml) and were not influenced by various factors studied. Only one patient developed an anastomotic leak, and one died postoperatively. None of the 82 patients followed one to five years and none of five patients lost to follow-up after five to 24 months experienced anastomotic complications. These data document the presacral space as a significant collector of fluids following such operations and do not support the concern that such a tube might damage or contaminate the anastomosis more than if left undrained when measured by increased rate of anastomotic leakage, by prolonged hospitalization, or by the appearance of anastomotic complications during the follow-up period.

Adult↗
PubMed1979

Laryngoscope blade with suction unit.

A laryngoscope blade incorporating a suction tube is described. Blood or secretions are automatically aspirated from the pharynx when the blade is inserted.

Laryngoscopes↗
PubMed2006

Nasotracheal intubation under curve-tipped suction catheter guidance reduces epistaxis.

BACKGROUND: Nasotracheal intubation (NTI) has greater potential for trauma of nasopharyngeal mucosa than orotracheal intubation. The present study investigated the success rate of NTI and frequency of nasal bleeding using a curve-tipped suction catheter (CTSC) to guide nasotracheal tube advancement. METHODS: Subjects comprised 131 adult patients who under-went NTI. Subjects were randomly divided into two groups: a) NTI under CTSC guidance (G[+] group). The CTSC (14 Fr) was first inserted through the tracheal tube, with the tip of the CTSC emerging from the distal end of the tube. The curved tip was directed ventrally. Both tracheal tube and CTSC were advanced together through the nasopharynx; b) NTI without CTSC guidance (G[-] group). The tracheal tube was advanced into the nasal cavity and passed into the pharynx without CTSC guidance. The time required to pass the endotracheal tube through the nasal cavity (nasal passage time), success rate of nasal passage with nasotracheal tube, and the incidence and severity of nasal bleeding were compared. RESULTS: Success rate for nasal passage was 100% in the G(+) group (62/62) and 82.6% in the G(-) group (57/69; P = 0.0006). Frequency of nasal bleeding was significantly lower in the G(+) group (21/62, 33.9%) than in the G(-) group (37/69, 53.6%; P = 0.023). Severity of nasal bleeding was also significantly lower in the G(+) group than in the G(-) group (P = 0.030). CONCLUSIONS: Nasotracheal intubation under CTSC guidance increases the success rate of airway instrumentation, and also reduces the incidence and severity of epistaxis.

Adult↗
PubMed2006

Suction catheter guided insertion of the ProSeal laryngeal mask airway is superior to the digital technique.

PURPOSE: We tested the hypothesis that digital insertion of the ProSeal laryngeal mask airway (ProSeal LMA) is more successful when using a suction catheter (SC) as a guide. METHODS: Two hundred and forty-three patients (ASA physical status I-III; aged 18-84 yr) were randomly allocated for the digital or SC-guided technique. The digital technique was performed according to the manufacturer's instructions. The SC technique involved priming the drain tube with the SC so that it protruded by 15 cm, blindly inserting the SC into the pharynx to a depth of 15 cm, followed by the digital technique. Failed insertion was defined by any of the following criteria: 1) failed passage into the pharynx; 2) malposition; and 3) ineffective ventilation. Any airway trauma, and visible or occult blood was noted. Sore throat, dysphonia and dysphagia were assessed 16 to 24 hr postoperatively. RESULTS: Fewer insertion attempts were required with the SC-guided technique (P = 0.02), but first attempt and overall success were similar. The time taken to provide an effective airway was shorter for the SC-guided technique (36 +/- 24 sec vs 44 +/- 28 sec, P = 0.02). A lateral approach was required less frequently with the SC-guided technique (0% vs 4%, P = 0.0004). There were no adverse events. Mouth trauma was more frequent with the digital technique (P = 0.04), but overall trauma was similar. There were no differences in the frequency of visible or occult blood. There were no differences in postoperative airway morbidity. CONCLUSIONS: The SC-guided technique is more frequently successful than the digital technique and is associated with less mouth trauma during insertion of the ProSeal LMA. We suggest that the SC technique may be a useful alternative when the digital technique fails.

Adolescent↗
PubMed2003

[A new irrigation-suction boring system facilities low-pressure intramedullary boring of isolated swine femurs].

AIM: Intramedullary nailing is the treatment of choice for the stabilization of fractures of long tubular bones. An important disadvantage of this method is the increase in intramedullary pressure and the resulting release of fat into the venous blood system during reaming of the medullary canal. We have developed a new type of rinsing-suction-reamer (SSB) in order to minimize these disadvantages. Trials were initiated to investigate whether it is possible to ream the medullary canal with the SSB without pressure increase in comparison with the standard AO-reamer (AOB). METHODS: Reamed intramedullary nailing was performed in 20 isolated pig femora. The intramedullary pressure was recorded continuously. RESULTS: While stepwise reaming was performed, the pressure only rose above the physiological level in AOB. During insertion of the guide wire and the nail, comparable values were measured for AOB and SSB. CONCLUSION: Our experiments show that reaming of the medullary canal is possible without a pressure increase using the SSB in comparison with AOB.

Animals↗
PubMedDate not supplied

Suction thrombectomy of thrombotic occlusion of the subclavian artery in a case of Takayasu's arteritis.

Takayasu's arteritis, also known as pulseless disease, is a chronic inflammatory arteritis affecting large vessels, predominantly the aorta and its main branches. Vessel inflammation leads to wall thickening, fibrosis, stenosis, and thrombus formation. Percutaneous removal of arterial thrombus with the use of several devices has been reported, with mixed results. We present a case of Takayasu's arteritis with thrombotic occlusion of the subclavian artery in which pulsed urokinase injection and suction thrombectomy were used to revascularize a threatened limb and to establish the sole arterial supply to the brain.

Adolescent↗
PubMed1998

NADPH-diaphorase histochemical staining of suction rectal biopsies in the diagnosis of Hirschsprung's disease and allied disorders.

The purpose of this study was to investigate the specificity and sensitivity of NADPH-diaphorase (NADPH-D) staining in suction rectal biopsies (SRB) to determine whether it can be used as a diagnostic test for Hirschsprung's disease (HD) and related disorders. We studied SRB material in 80 patients suspected of having such disorders taken at 3, 5, and 7 cm above the pectinate line. Eight-micron sections were stained with hematoxylin and eosin, acetylcholinesterase histochemistry, and NADPH-D histochemistry. Normal biopsy specimens demonstrated strong NADPH-D reactivity in the submucosal ganglia and a large number of NADPH-D-positive fibers in the muscularis mucosae (MM). In contrast, there were no NADPH-D-positive fibers in the MM in patients with HD and hypertrophic nerve trunks stained weakly. Patients with hypoganglionosis (HYPG) demonstrated only a few NADPH-D-positive fibers in the MM and scant submucosal ganglia. Our results show that it is possible to diagnose HD and HYPG in mucosal rectal biopsies containing MM only and stained by NADPH-D histochemistry. As there is no background staining in NADPH-D histochemistry, it is easy to detect NADPH-D-positive fibers. NADPH-D histochemical staining may be an important additional technique for diagnosing HD and related disorders.

Biopsy, Needle↗
PubMed2006

Simplified wound care and earlier wound recovery without closed suction drainage in elective total hip arthroplasty. A prospective randomized trial in 100 operations.

INTRODUCTION: Evidence to support or refute closed suction drainage (CSD) in primary total hip replacement (THR) is not conclusive. Our anecdotical experience was that persistent ooze from the drainage hole often delayed wound recovery. We hypothesized that, without CSD, wound care would be simplified without short or long term disadvantage. MATERIALS AND METHODS: Hundred patients scheduled for primary THR were randomly assigned for CSD or non-drainage. Drains were withdrawn at day 2. Pain, wound hematoma, number of dressing changes, time of persistent discharge from the operation site (skin incision and drain hole), total blood loss and number of blood transfusions were prospectively recorded. Hip function, presence of heterotopic ossifications (HTO) and complications were recorded at a follow visit 1 year after surgery. RESULTS: Wound sites managed without CSD needed significantly less wound dressings (P < 0.001) and were dry at an earlier time (P < 001). Despite a significant bigger subfascial hematoma in the non-drained group (P < 0.05), in terms of pain, thigh swelling, total blood loss, number of transfusions needed, hip function and HTO no difference was recorded between the groups (P = 0.2-0.82). CONCLUSION: To omit CSD in primary THR results in simplified and more rapid wound management without any disadvantage at short and long term.

Adult↗
PubMed1995

Right vs. left sensorimotor cortex suction-ablation in the rat: no difference in beam-walking recovery.

The ability of rats to traverse a narrow elevated beam has been used to quantitate recovery of hindlimb motor function after unilateral injury to the sensorimotor cortex. We tested the hypothesis that the rate of spontaneous beam-walking recovery varies with the side of the cortex lesion. Groups of rats that were trained at the beam-walking task underwent suction-ablation of either the right or left hindlimb sensorimotor cortex. There was no difference in hindlimb motor function between the groups on the first post-operative beam-waking trial carried out the day after cortex ablation and no difference between the groups in overall recovery rates over the next two weeks. Subsequent analyses of lesion surface parameters showed no differences in lesion size or extent. Regardless of the side of the lesion, there were also no differences between the right and left hemispheres in norepinephrine content of the lesioned or contralateral cortex. We conclude that the side of sensorimotor cortex ablation injury does not differentially affect the rate of spontaneous motor recovery as measured with the beam-walking task.

Animals↗
PubMed1977

Histochemical criteria for the diagnosis of Hirschsprung's disease in rectal suction biopsies by acetylcholinesterase activity.

Histochemistry to demonstrate cholinergic fibers in rectal suction biopsies is a reliable method to diagnose or exclude Hirschsprung's disease. The histochemical criterion of a positive reaction consists of the presence of many coarse discrete cholinergic fibers in the muscularis mucosae and in the immediately subjacent submucosa, best assessed under medium power with the condenser lowered. A marked increase in cholinergic fibers in the lamina propria is seen only in some cases of Hirschsprung's disease. At least some cases of Hirschsprung's disease may be the result of destruction of ganglion cells by a viral infection in the intrauterine and early postnatal life.

Acetylcholinesterase↗
PubMed1988

A comparison between peritoneal sheathing of the ureters (Ohkawa technique) and retroperitoneal pelvic suction drainage in the prevention of ureteral damage during radical abdominal hysterectomy.

Sixty patients had a radical abdominal hysterectomy with or without a bilateral salpingo-oophorectomy. The Ohkawa procedure was utilized in 26 (43.3%) of the patients and retroperitoneal ureteral placement with suction drainage in 34 (56.7%) of the patients. These two operative procedures were evaluated for complications such as fistula, obstruction, and hydronephrosis by comparing preoperative and postoperative intravenous pyelograms. Five of the 60 patients (8.3%) had surgical complications within one postoperative month. A ureteral obstruction occurred in two patients, and a uretrovaginal fistula occurred in two patients. Hydronephrosis was found in both sets of patients. All of these complications occurred in an additional two patients, both of whom had an Ohkawa procedure. The study led us to conclude that retroperitoneal ureteral placement is not only quicker to perform but also leads to fewer complications than the Ohkawa technique.

Carcinoma↗