Search PubMed⌕ Search

SEARCH · Search PubMed

Results for “Suction”

Search indexed PubMed citations on genomics, clinical trials, systematic reviews and public health. Explore titles, authors and supplied subject terms, then open the PubMed record.

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

At least 325 records · Page 18Linked to original sources
PubMed2006

[Rotation suction-knife (shaver) in otorhinolaryngological surgery].

INTRODUCTION: Rotation suction knife (shaver or microdebridor) was developed in beginning 1985 in orthopedic surgery. In the field of otolaryngology it was used in 1992-1994. Shaver is a combination of suction and cutting round knife working together. Knives of different shapes are put into handpiece. They have outer sheath with window, which protect the inner rotating blade. The blade is connected to suction and cutting tissue is removed from the operation field. In otolaryngology surgery we mostly used the oscillation cutting mode which is the most sufficient. Shaver surgery is precise in soft tissue resection, so the most advantages to powered the system is in rhinosurgery, polypectomy with extension to pansinus surgery. Microdebridor can be also used for nasopharynx-adenoidectomy, chonanal atresia surgery, turbinoplasty, dacryocystorhinostomy, sella turcica tumor resection or laryngeal surgery. MATERIAL AND METHODS: We used the Storz's shaver system with a handpiece with a motor in the vertical part of the T-shaped handle. Suction and transport of rejected material does not pass through the motor system. The suction channel is straight and clogging is minimized. We performed shaver surgery during functional endonasal endoscopic surgery (FESS) for polypectomy in 15 cases, medial antrostomy (uncinectomy for "swinging door" procedure) in 10 cases, nasopharyngeal-adenoidectomy in 3 cases and turbinoplasty (inferior turbinectomy) in 10 cases. RESULTS: In our material we did not observe any complications during and after surgery. The healing process is very good without obstruction and crusting. The shaver system has an excellent protection for surrounding tissue and minimalized the tissue destruction. CONCLUSIONS: Shaver is an excellent powered instruments for rhinosurgery especially massive polyps of nose and sinuses. It is very sufficient to prevent normal tissue and remove pathological one, this can be achieved in no bleeding area.

Adolescent↗
PubMed1991

Endotracheal suctioning in adults with head injury.

The purpose of this study was to determine the method of endotracheal suctioning (ETS) that resulted in the least compromise to the cerebrovascular status of adult patients with severe head injuries. A two-group (two vs three ETS), two-protocol (100% tidal volume [VT] vs 135% VT) design was used. The dependent variables were mean intracranial pressure (MICP), mean arterial pressure (MAP), cerebral perfusion pressure (CPP), heart rate (HR), and oxygen saturation (SaO2). By random assignment, 14 subjects were in the two-ETS group and 16 subjects were in the three-ETS group. Intracranial pressure response to ETS in these patients with head injury can be characterized as falling into three patterns: (1) a rise in baseline beginning with ETS and continuing throughout the ETS sequences; (2) intracranial pressure spiking during the suctioning component of the protocol; (3) a combination of both a rising baseline and spiking. There was a significant (p less than or equal to 0.001) increase from baseline for both two- and three-ETS groups with both hyperoxygenation protocols (100% VT vs 135% VT) for MICP, MAP, HR, and CPP. No significant difference was found for SaO2 for either of the protocols regardless of number of suction passes. No significant differences were found between two- and three-ETS groups for any of the dependent variables. All groups, however, regardless of number of suction passes, demonstrated a cumulative increase in MICP, MAP, and CPP with each consecutive suction sequence.(ABSTRACT TRUNCATED AT 250 WORDS)

Adolescent↗
PubMed1990

[Extracellular and intracellular electrogram of the heart at the site of suction electrodes in frogs].

On biological model of current due to damage with the suction electrode on the frog heart atrium in situ was given the survey of epicardial, intracellular and membraneous leads. The following data were found out: 1. Monophase epicardial recording is gradually starting from underpressure values -13.3 kPa to -40.0 kPa in the suction electrode when it is already constant; 2. In the course of sucking the originating monophase recording in lead with the suction electrode is spontaneously disappearing after a longer period (6-10 hrs) and changing into original multiphase one; 3. Intracellular potential up to 0.5 mm round suction electrode is lowered and it thus corresponds to monophase deformation in unipolar extracellular leads in this particular region; 4. After the original fall of the intracellular potential under the suction electrode higher underpressure causes the increase of this potential. Under local loss of membraneous tension the intracellular electrode reaches the branch of demarcation current inbetween the internal and external sides of sound membranes as well as the extracellular electrode.

Animals↗
PubMed1989

A meconium suctioning device that is safe and practical.

Immediate suctioning of meconium from the trachea of newborns is believed to be an effective method for preventing or minimizing the meconium aspiration syndrome. Recently, however, the possibility of transmitting disease from the newborn to the physician or vice versa, while using the standard technique of direct oral suction (through a surgical mask), has been stressed. This has prompted the development of alternative methods for suctioning the newborn's trachea. These methods, while eliminating the possibility of disease transmission, create other problems. We, therefore, devised a technique for tracheal suctioning using inexpensive, readily available materials that is not only safe and effective in suctioning meconium but is also practical and easy to perform.

Humans↗
PubMed1988

Acute histologic changes in the tracheobronchial tree associated with different suction catheter insertion techniques.

Anesthetized, intubated kittens were subjected to one of two procedures: (1) insertion of a suction catheter to a predetermined distance and withdrawal with or without the application of suction or (2) insertion of the catheter until resistance was met and withdrawal with or without the application of suction. There were 5 animals in each group. All 10 of the animals in the "predetermined distance" groups had normal tissues. Of the 10 animals in the "resistance" groups, nine displayed multifocal areas of denuded epithelium and varying degrees of inflammation. One subject from the "resistance/suction" group had normal tissues. One from the "resistance/no suction" group displayed a small hemorrhage into the soft tissue. The Kruskal-Wallis rank test revealed a significant difference (p less than 0.05) between the "predetermined" and the "resistance" groups. The application of suction had no effect on the amount of damage evident.

Animals↗
PubMed1986

Prospective, randomized trial of nasogastric suction in patients with acute pancreatitis.

The efficacy of nasogastric (NG) suction was evaluated in a prospective, randomized trial in 60 patients with acute pancreatitis of mild to moderate severity. Group I, NG (29 patients) was treated with NG suction, and group II, no NG (31 patients) was treated without NG suction. The presentation, cause of pancreatitis, and clinical parameters at the time of admission of the two groups were similar. The use of NG suction had no discernible benefit during hospitalization. There were no differences in duration of abdominal pain, the interval until bowel sounds returned, the need for narcotic administration, or the length of time intravenous fluid therapy was needed. When compared with group II, no NG, patients in group I, NG tended to resume oral intake later (5.0 +/- 0.3 versus 3.9 +/- 0.5 days) and remain hospitalized longer (13.1 +/- 2.6 versus 10.7 +/- 2.0 days). The incidence of serious complications, such as pancreatic abscess, pseudocyst, biliary obstruction, or pulmonary failure, was no different between the groups. This study demonstrates that the routine use of NG suction in patients with acute pancreatitis of mild to moderate severity is of no benefit in altering the clinical course.

Acute Disease↗
PubMed1985

The effects of oxygen and hyperinflation on arterial oxygen tension after endotracheal suctioning.

The effects of hyperinflation and increasing the FIO2 to 1.0 on PaO2 after endotracheal suctioning were examined in 28 patients after cardiac surgery. The changes in PaO2 immediately after and at 5- and 10-minutes after suctioning were compared with control values. Hyperinflation at the patient's baseline FIO2 produced a mean decrease in PaO2 of 18 mm Hg immediately after suctioning in over 75% of the sample. Preoxygenation with an increase in the ventilator FIO2 to 1.0 produced a mean increase in PaO2 of 48 mm Hg in 75% of the sample. Delivering preoxygenation by hyperinflation provided greater protection for all patients with a mean increase in PaO2 of 100 mm Hg. No statistically significant differences existed between the 5- and 10-minute PaO2 value and the control PaO2 values for any of the procedures. Experimental hyperinflation was aborted in two patients who experienced significant hypotension in association with the hyperinflation. The hypotension was transient, with arterial blood pressure immediately returning to baseline values on termination of the experimental hyperinflation. In conclusion, 100% oxygen administered by hyperinflation for 1 minute before and after endotracheal suctioning protects patients after cardiac surgery from a fall in PaO2. Because hyperinflation can cause alterations in arterial blood pressure and heart rate, these vital signs should be visually monitored during the endotracheal suctioning procedure.

Adult↗
PubMed1979

[Controlled clinical trial "blind" versus aimed fibrebronchoscopic suction in mechanically ventilated patients (author's transl)].

In patients treated with ventilation therapy only 60% of blind suction catheters reach the desired position. In ten patients the routinely performed blind suction was replaced by aimed bronchoscopic suction. Blood gas analyses before and after aimed and blind suction favoured the former. Also the arterioalveolar oxygen tension difference showed a good response to aimed suction. There is a broad spectrum of indications for fibreoptic bronchoscopy in every care unit dealing with mechanical ventilation.

Blood Gas Analysis↗
PubMed1981

An evaluation of the efficacy of nasogastric suction treatment in alcoholic pancreatitis.

We evaluated the efficacy of nasogastric suction for alcohol-related pancreatitis by performing a randomized, controlled study. Twenty-one patients with pancreatitis associated with alcohol ingestion received either nasogastric suction or nothing by mouth in addition to intravenous fluids and meperidine as needed. Twenty patients completed the treatment to which they were assigned. There were no statistically significant differences between the group that received nasogastric suction and the group that did not in duration of abdominal pain, anorexia, abdominal tenderness, ileus, presence of abdominal masses, or elevated serum amylase and lipase activities and the ratio of the renal clearance of amylase to creatinine; or the number of meperidine injections requested per subject. Patients receiving nasogastric suction complained of significantly longer duration of nausea and vomiting. We conclude that nasogastric suction is not effective in the treatment of uncomplicated alcoholic pancreatitis.

Abdomen↗
PubMed1994

Endotracheal saline and suction catheters: sources of lower airway contamination.

BACKGROUND: Normal saline instillation prior to endotracheal suctioning is a critical care ritual that persists despite a lack of demonstrated benefit. Saline instillation may dislodge viable bacteria from a colonized endotracheal tube into the lower airway, overwhelming the defense mechanism of immunocompromised patients. OBJECTIVE: To determine the extent to which normal saline irrigation and suction catheter insertion dislodge viable bacteria from endotracheal tubes. METHODS: Endotracheal tubes from 10 critical care patients intubated for at least 48 hours were obtained immediately after extubation. Each tube was used in random order for both saline instillation and suction catheter insertion. Dislodged material was cultured for quantitative analysis. RESULTS: Suction catheter insertion dislodged up to 60,000 viable bacterial colonies. A 5-mL saline instillation dislodged up to 310,000 viable bacterial colonies. CONCLUSIONS: The potential for infection caused by dislodging bacteria into the lower airway is additional evidence that routine use of saline during suctioning procedures should be abandoned.

Adult↗
PubMed1993

Bacterial contamination and closed suction drainage in open meniscectomy of the knee.

A prospective study was undertaken to investigate the occurrence and possible sources of microbial contamination in association with open meniscectomy of the knee. Sixty patients were randomized into three closed suction drainage regimens of 12, 24 and 48 hours' postoperative suction drainage, respectively. Specimens for bacterial culture were taken from the joint at the time of surgery, from the surgical suction tips, from the subcutaneous part of the drain surface and from the drain-contained fluid at the time of drain removal. The airborne bacterial contamination showed no marked role in this bacterial invasion into the joint, nor did the use of suction increase the risk. The vacuum suction drain, on the other hand, appeared to carry an obvious risk of bacterial invasion, as a parallel of time. In the present comparison this risk was minimal when the drain was removed 12 hours postoperatively.

Acinetobacter Infections↗
PubMed1993

Effects of lung hyperinflation and presence of positive end-expiratory pressure on arterial and tissue oxygenation during endotracheal suctioning.

PURPOSE: To explore the effects of endotracheal suctioning on mixed venous oxygen tension and other measures of arterial and tissue oxygenation, to determine if these would be clinically useful outcome measures of endotracheal suctioning. BACKGROUND: Measuring arterial oxygenation only as an outcome of endotracheal suctioning can be misleading in that it may appear adequate in the presence of marked decreases in mixed venous oxygen tension, a good indicator of the adequacy of tissue oxygenation. METHODS: Eighteen instrumented and oleic acid-injured animal models of acute respiratory failure undergoing closed-system endotracheal suctioning were studied according to a 2 x 2 factorial design to measure the effects of oxygen inflations at tidal volume or 135% of tidal volume either in the presence or absence of positive end-expiratory pressure. RESULTS: Using multivariate analysis of variance for repeated measures, protocol by time effects for mixed venous oxygen tension, arterial oxygen saturation, arterial oxygen tension, oxygen delivery and oxygen extraction ratio were statistically significant. Changes in mixed venous oxygen tension and arterial oxygen saturation were parallel. CONCLUSIONS: Continuous measurement of mixed venous oxygen tension allows the calculation of oxygen delivery and oxygen extraction ratio, which provide a better estimation of the effects of endotracheal suctioning on tissue oxygenation than arterial oxygen tension alone.

Acute Disease↗
PubMed1996

[A reused suction catheter was broken and produced a tracheobronchial foreign body].

We present a rare case involving a broken suction catheter that became lodged in the tracheobronchial tree. An eight-month-old infant was scheduled for hernioplasty. Following intubation with a 4 French (Fr.) endotracheal tube, a 5 Fr. reused suction catheter was applied for suctioning a moderate amount of secretion. This catheter had been resterilized by ethylene oxide gas (EOG). Insertion of the catheter into the tube was not done smoothly, and we could not obtain any secretion. During the extraction of the suction catheter by force, the catheter broke. The distal fragment (20 cm length) seemed to have been lodged in the tracheobronchial tree. Prior to its removal by bronchoscopy, the endotracheal tube was extubated. Fortunately the remaining part of the catheter come out with the tube. Ten cm of the fractured catheter was included in the tube and 5 cm protruded from the tube. The catheter of smaller diameter is easy to be broken even by weaker force. After resterilization by EOG for once, there was no change in length and force at breaking point. Elongation of the broken catheter (85.5%) was less compared with the new sample (155%). At the breaking point, half of the cross section was very smooth and looked as if it had been cut by a razor, while the other half appeared to have been broken by pulling. The break may have started from the crack which had occurred at the insertion or resterilization. Therefore, we should restrict the reuse of small suction catheters, and should always utilize the catheter of the largest size possible.

Anesthesia, Inhalation↗
PubMed1977

Is the procedure of vitreous suction out of date since introduction of vitrectomy?

Vitreous suction is still a useful procedure in cases of severe vitreous opacification. In spite of the technical perfection and good results of vitrectomy, the chances of a vitreous suction should be taken into consideration before a definite decision is made. The surgical technique of vitreous suction is very simple, lensectomy is never required, and the possibility of a subsequent vitrectomy is not impaired of the suction manoeuvre has failed. The frequency of complications, namely retinal detachment and bacterial intraocular infection, is reasonable if the almost hopeless condition of the affected eyes, and the severe general diabetic angiopathy and poor resistance are considered, which in individuals with postoperative endophthalmitis usually are found. Vitreous suction is still acceptable as a minor sort of vitrectomy.

Animals↗
PubMed2006

Odontocete suction feeding: Experimental analysis of water flow and head shape.

The role of cranial morphology in the generation of intraoral and oropharyngeal suction pressures in odontocetes was investigated by manipulating the jaw and hyolingual apparatus of submerged heads of three species presenting varied shapes. Hyoid and gular muscles were manually employed to depress and retract the tongue. Pressures were recorded at three locations in the oral cavity, as gape and site, speed, and force of pull were varied. A biomechanical model was also developed to evaluate pressure data. The species with the shortest, bluntest head and smallest mouth opening generated greater negative pressures. Suction generation diminished sharply as gape increased. Greatest negative pressures attained were around -45 mmHg (-6,000 Pa), a magnitude deemed suitable for capture of small live prey. Odontocetes utilizing this bidirectional flow system should profit by evolution of a rounder mouth opening through progressive shortening and widening of the rostrum and jaws, a trend evident in cranial measurements from fossil and recent odontocetes. Blunt heads correlate with anatomical, ecological, and behavioral traits associated with suction feeding. Small-gape suction (with minimally opened jaws) could be used by odontocetes of all head and oral shapes to draw prey sufficiently close to the mouth for suction ingestion or grasping via dentition. Principal limitations of the experimental and mathematical simulations include assumption of a stationary odontocete with static (open or closed) jaws and potential scaling issues with differently sized heads and gapes.

Animals↗
PubMed1994

Influence of suction cup oculopression on corneal astigmatism.

In 11 (right) eyes of 11 ocularly healthy subjects an artificial stepwise intraocular pressure (IOP) elevation was applied by suction cup oculopression. The initial negative pressure in the suction cup was 80 mmHg; it was raised in steps of 40 mmHg. The median of the corneal astigmatism, measured with a Zeiss ophthalmometer, was 0.50 D before oculopression (the values of the 10th and 90th percentiles were 0.30 and 1.10 D, respectively). Corneal astigmatism increased to 2.00 (0.00-5.10) D, 2.25 (1.00-5.55) D, 2.63 (0.63-7.00) D, 3.38 (1.88-6.88) D, 3.38 (2.83-7.25) D, and 4.38 (2.85-5.63) D with 80, 120, 160, 200, 240, and 280 mmHg oculopression, respectively. The astigmatism dropped to 0.75 (0.00-2.30) D immediately after removal of the suction cup. Thus, suction cup oculopression not only influenced IOP but also ocular refraction. This is of particular importance since visual evoked potential (VEP) amplitude is to a high degree dependent on refractive changes. This fact has to be considered if changes in VEP amplitude during suction cup oculopression are used as a tolerance test in glaucoma diagnosis.

Adult↗
PubMed1992

External lipoplasty suction device.

Most mobile suction devices specially designed for blunt suction lipectomy are to some degree noisy and several of them could be considered expensive. Their exhaust goes out in the operating room (OR). The potential contamination by aerosoles and fumes favor the use of special outlet filters. The author describes the suction equipment he made in 1984. An industrial high-power vacuum pump is placed outside the OR. The suction tubing goes out of the ceiling in the OR. The machine has double remote pedal control. The exhaust vents out at a hidden place in the clinic's garden, where eventually any AIDS or hepatitis virus will die promptly. This equipment has been used in more than 4200 suction lipoplasty procedures with no technical or surgical complications related to the device.

Lipectomy↗
PubMed1990

Interleukin 2, soluble interleukin 2 receptor, and interferon-gamma in the suction blister fluids from psoriatic skin.

Psoriasis represents inflammatory skin disorders characterized by significant changes in cellular immunity, particularly exhibiting alterations in T lymphocyte-related functions. Early psoriatic lesions have been reported to show an infiltration of activated helper T cells. Elevated levels of interleukin 2 (IL-2), IL-2 receptor (IL-2R), and interferon-gamma (INF-gamma) are associated with an early activation of T cells. To examine local activation of T cells in psoriatic skin, the amounts of activated T cell products, IL-2, secretory form of IL-2R (sIL-2R) and INF-gamma were measured in the fluids of suction blisters raised on psoriatic skin. sIL-2R levels were significantly elevated in the suction blister fluids raised on psoriatic involved skin compared with those on normal and psoriatic uninvolved skin. On the other hand, neither IL-2 or IFN-gamma was detected in the suction blister fluids either from normal, psoriatic uninvolved, or involved skin. However, we could detect IFN-gamma and IL-2 in the psoriatic scale extracts. Although we failed to detect IL-2 and IFN-gamma in the suction blister fluids, the increased levels of sIL-2R in the suction blister fluids from the psoriatic lesional skin indicate local activation of T cells in psoriatic lesional skin.

Adolescent↗