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 307 records · Page 17Linked to original sources
PubMedDate not supplied

In utero meconium suctioning may prevent meconium aspiration.

OBJECTIVE: To assess usefulness of in utero meconium suctioning using endoscopic approach. MATERIALS AND METHODS: In utero meconium suctioning under direct endoscopic visualization was successfully performed in 11 fetuses in whom thick meconium was detected upon rupture of the membranes. A gas-sterilized flexible fiberoptic scope with an operational channel was introduced via cervix, and meconium was aspirated from the fetal mouth. Definitive suction was performed in all neonates immediately after birth. RESULTS: Endoscopic meconium suctioning was successfully performed in 11 out of 16 fetuses with retrieval of 3-12 ml of meconium. Only 1 neonate in this series of cases had meconium below the vocal cords and none developed meconium aspiration syndrome postnatally. CONCLUSION: Because fatal meconium aspiration syndrome is largely an intrauterine event, the concept of in utero prophylactic meconium suctioning may serve as an effective modality for its prevention.

Amniotic Fluid↗
PubMedDate not supplied

Suction sclerotherapy for the treatment of esophageal varices: a report of a preliminary feasibility study.

We report a new treatment modality for esophageal varices, suction sclerotherapy, which was designed to lift away mucosa and submucosa during treatment to prevent deep injection and resultant esophageal ulcerations. In order to compare the posttreatment complications of suction sclerotherapy against freehand sclerotherapy, we randomized 4 mongrel dogs to receive ten injections of 0.5-ml aliquots of absolute alcohol into the esophagus by either the suction or freehand sclerotherapy technique. The animals were humanely sacrificed after 48 h and examined. A total of five large, deep, confluent ulcers, free perforation, and lung abscess were seen in the animals randomized to freehand sclerotherapy. In contrast, a total of 14 shallow, discrete, erythematous lesions were found in the suction sclerotherapy group; none of these lesions extended deeper than the submucosa. We conclude that suction sclerotherapy produced local complications limited to the submucosa which were less severe as compared with freehand sclerotherapy.

Animals↗
PubMedDate not supplied

Protein concentration of subcutaneous interstitial fluid in the human leg. A comparison between the wick technique and the blister suction technique.

The wick technique and the blister suction technique are the most common methods for sampling of subcutaneous interstitial tissue fluid in man. The blister suction technique has the advantage of being less invasive than the wick technique, but the reliability of this method is still controversial. The aim of this study was to evaluate whether the simpler blister suction technique using large (8 mm) blisters could replace the wick technique in the investigation of patients with postreconstructive leg edema. Fifteen patients with ipsilateral leg edema following infrainguinal bypass surgery for lower limb atherosclerosis were investigated. The two different fluid sampling techniques were applied simultaneously on both legs. The concentration of total protein and albumin as well as colloid osmotic pressure of the subcutaneous interstitial tissue fluid in the leg were measured in all fluid samples. Agreement analysis was applied to compare the two methods, while the correspondence between the methods was estimated with linear regression analysis. The agreement index was found to be positive for all variables from the operated as well as from the contralateral control limb. Furthermore, all values were within the agreement limit. The best agreement between the two methods was found for colloid osmotic pressure on the operated side. According to the equation of linear regression, there was a slight overestimation of the wick values compared to the observed blister values. In conclusion, there was a good methodological agreement between the blister suction technique and the wick technique. The less invasive blister suction technique should be regarded as the method of choice for the investigation of subcutaneous interstitial tissue fluid in patients with postreconstructive leg edema.

Aged↗
PubMed1994

The treatment of superficial bladder tumours under local anaesthetic using suction diathermy electrodes.

Daycase cystoscopy under local anaesthetic is commonly used in screening patients with superficial transitional cell carcinoma of the bladder. Treatment of any lesions found, however, often requires a further cystoscopy under general or regional anaesthesia. Recent reports suggest that small lesions can be diathermied without anaesthesia with only mild patient discomfort. Suction diathermy electrodes, introduced for the treatment of small superficial bladder tumours, have significant advantages over conventional methods. Firstly, most of the superficial tumour fronds can be removed painlessly by suction alone. Diathermy, the uncomfortable component of treatment, is sparingly used to treat the tumour base. Larger tumours can therefore be treated by suction diathermy, with less patient discomfort, than by standard cystodiathermy methods. Secondly, by eliminating tumour debris within the bladder during treatment and reducing tissue damage due to diathermy, suction diathermy minimizes the risk of tumour recurrence due to implantation. In this preliminary report the ease and efficacy of using suction diathermy electrodes under local anaesthesia is assessed.

Aged↗
PubMed1995

Endotracheal suctioning of the newborn piglet.

Suctioning of the endotracheal tube (ET) is a necessary procedure to remove secretions and debris that naturally accumulate over time. Endotracheal suctioning protocols often call for the injection of small (< or = 0.5 ml) amounts of normal saline down the ET tube just prior to commencing the suctioning procedure. Comparisons of room temperature and body temperature normal saline injectate protocols and their impact on arterial blood gas parameters and heart rate alterations prior to, during, and following the endotracheal suctioning procedure were conducted. Eleven newborn Yorkshire piglets less than 24 hours of age were randomly exposed to both the room temperature (RT) and body temperature (BT) normal saline suctioning protocols. The analysis and interpretation of the results revealed that the RT normal saline injectate caused a greater decline in heart rate and greater alterations in arterial blood gas parameters than did the BT normal saline injectate.

Animals↗
PubMed2005

Scaled suction for microneurosurgery: technical note.

OBJECTIVE: We have developed scaled suction to facilitate the measurement of aneurysm neck width and tumor size during operations. METHODS: We constructed a new suction device scaled every 1 mm from the tip to 3 cm and every 5 mm from 3 to 5 cm. The scaled suction devices have been used in 50 aneurysm and brain tumor operations. RESULTS: The new suction device permits easy measurement of aneurysm neck width, tumor size, the extent of internal decompression of tumor, and depth from the surface of the brain to the lesion. CONCLUSION: Our scaled suction device is a simple and useful navigator for continuously measuring intraoperative variables such as lesion size and distance between the lesion and the surrounding vital structures.

Aneurysm↗
PubMed1985

Effects of suctioning devices on oral fluoride retention.

This study examined the effectiveness of suctioning devices in reducing oral fluoride retention after professional 4-minute applications of a 1.23% fluoride gel. The value of patient expectoration was also evaluated in the child subjects. The suction devices were statistically significant adjuncts in reducing oral-retained fluoride in all cases; however, the oral-retained fluoride doses after the suctioning procedures were still distinct in both adults (10.3 +/- 2.3 mg) and children (7.7 +/- 1.0 mg). These amounts of oral-retained fluoride would result in substantial elevations in body fluid fluoride concentrations. One minute of expectoration after the suctioning procedures in children was a statistically significant method of further reducing oral fluoride retention to a clinically acceptable level (1.6 +/- 0.5 mg). We recommend that suction devices be used during topical fluoride treatments, but most importantly that the patients be requested to expectorate thoroughly after topical treatment.

Adult↗
PubMedDate not supplied

Comparison of interface pressures with pin and suction suspension systems.

A common mode of limb suspension for transtibial amputees is the pin liner/shuttle lock system. Despite its popularity, some clinicians question its use because of observed daily and chronic changes to the residual limb. For this study, we measured limb interface pressures during ambulation with pin and suction suspension systems. No pressure differences were seen between the modes of suspension during stance phase. However, during swing phase, pin suspension maintained an average occlusive compressive pressure of 6.7 kPa on the proximal tissues, as compared to the subocclusive pressure of 1.1 kPa with suction suspension. Simultaneously, pin suspension elevated the peak magnitude of suction to -39.5 kPa at the distal residual limb, compared to -26.1 kPa with suction suspension. During swing phase, the pin liner squeezes proximally while creating a large suction distally on the residual limb and is the likely cause of daily and chronic skin changes observed in pin users.

Adult↗
PubMed2005

Is suction drainage an effective means of preventing hematoma in thyroid surgery? A meta-analysis.

OBJECTIVE: To evaluate the efficacy of suction drainage in preventing postoperative hematoma formation in thyroid surgery. METHODS: We conducted a meta-analysis using only randomized controlled trials in which the incidence of post-thyroidectomy hematoma was compared directly in patients with and without suction drains (eight studies since 1980; N = 944). The odds ratio (OR) with respective confidence intervals (CIs) using the fixed effects model was reported. We used an OR < 1.0 as being in favour of treatment (ie, the use of suction drains). RESULTS: In our meta-analysis, there was no statistically significant difference between the rates of post-thyroidectomy hematoma whether or not suction drains were used when the results were combined using a fixed effects model (OR 1.04, 95% CI-1.93), with p = .90. In this comparison, a fixed effects model was used rather than a random effects model because there was no statistically significant heterogeneity (chi2 = 6.26, p = .28). CONCLUSIONS: We conclude that the use of suction drains in thyroid surgery to prevent postoperative hematoma is not evidence based.

Chi-Square Distribution↗
PubMed1984

Suction blisters of the skin: a compartment with physiological, interstitium-like properties.

In six young men without known skin disease we evaluated whether mild suction to the skin significantly alters the properties of the underlying capillaries or whether suction blisters can be regarded as an interstitium-like compartment with dynamic physiological properties. Instead of the usual technique where the tracer is administered intravenously prior to the suction, we postponed the administration of the tracer (99mTc-DTPA) to 15 min after the suction blisters had been formed on the abdominal skin. We found that the final slope of average interstitium 99mTc-DTPA was almost parallel to that of the final slope of 99mTc-DTPA in the blister fluid (r = 0.917). During the period 120-240 min after the injection where the final slopes could be defined, the ratio between the amount of 99mTc-DTPA present in the interstitium and the amount of 99mTc-DTPA present in a blister fluid volume equal to interstitial fluid volume was 1.3. It is concluded that suction blisters of the skin behave like a dynamic interstitium-like compartment.

Adult↗
PubMed2001

Effectiveness of suction drainage after primary or revision total hip and total knee arthroplasty.

Postoperative suction drainage of a surgical wound is aimed at evacuation of wound hematoma. This study evaluated the effectiveness of suction drainage in joint replacement surgery. Surgical wounds in 206 patients with primary or revision hip and knee arthroplasty were assessed according to a set criteria. Forty-eight hours postoperatively, wound hematoma and exudate formation were not related to the use of suction drains. A greater tendency of wound oozing was seen in revision hip arthroplasty performed with postoperative suction drainage. Therefore, postoperative suction drainage did not affect hematoma formation or wound oozing and is thus considered an unnecessary practice.

Aged↗
PubMed1999

Reassessment of the suction blister model of wound healing: introduction of a new higher pressure device.

BACKGROUND: Negative pressure suction blisters have been used as a reproducible and minimally invasive in vivo model of wound healing in human subjects. Despite advantages over other available methods, this technology has not been employed widely in wound healing research. OBJECTIVE: To evaluate the efficacy of a higher pressure suction blister system as an in vivo human model for wound healing and to demonstrate the superiority of this method over previously used suction blister models of wound healing. METHODS: Four 5-mm-diameter suction blisters were induced on the medial upper arm of 18 healthy men and women using a negative pressure of 508 mmHg. Blister roofs were removed, exposing the underlying dermis. The time required for blister formation, the uniformity of wounds, and the degree of patient tolerance were assessed. The ability to monitor clinical re-epithelialization over 7 days was also evaluated by a team of investigators. RESULTS: Four partial-thickness wounds were produced on each subject in 25-45 min. Wound diameter and morphology were uniform in all subjects. Volunteers tolerated the procedure without complaints of pain or discomfort. Progressive, re-epithelialization was observed daily starting 24 h post-wounding. CONCLUSIONS: This higher pressure suction blister system is an effective model for wound healing. Compared to reported methods, it is a better tolerated, more reliable, and more efficient approach to studying in vivo wound repair in human subjects. It is especially well suited for screening the wound healing potential of new pharmacologic agents.

Adult↗
PubMed2002

Evaluation of possible battlefield suction pumps for the far-forward setting.

Medical personnel use suction pumps to clear a patient's airway of mucous, blood, and emesis. Because of size, weight, and durability, many commercially available suction pumps are not suited for battlefield application. The objective of this study was to identify a well-designed suction pump for use in the far forward environment. We report on the performance of seven candidate battlefield suction pumps, all of which are human-powered devices and intended to be carried by medics. Three commercially available pumps, one modified device, a syringe, and two new prototypes are evaluated and compared. We show that all of the devices are capable of generating suction pressure, but one pump stands out in terms of size, weight, and performance.

Equipment Design↗
PubMed1992

Preventing hypoxemia and hemodynamic compromise related to endotracheal suctioning.

OBJECTIVE: To help the clinician bridge the gap between research and practice in determining ways to minimize side effects of endotracheal suctioning. DATA SOURCES: This article summarizes four previous reviews of research and studies published between 1984 and 1991 related to oxygenation techniques before, during and after endotracheal suctioning, and hemodynamic consequences of the suctioning procedure. STUDY SELECTION: Studies were reviewed by type of subject: animals, human subjects with normal lung function, and human subjects with abnormal lung function. Research of pediatric and head-injured populations was excluded from this review. DATA EXTRACTION: Oxygenation protocol, endotracheal suction characteristics, outcomes and measurement times, sample and setting, and findings were presented. CONCLUSIONS: Conclusions relate to the effectiveness of various endotracheal suction protocols on prevention of hypoxemia and hemodynamic compromise in intubated patients. DATA SYNTHESIS: An algorithm to guide clinical decision making is presented based on the conclusions of this review of the research.

Algorithms↗
PubMed2004

[A suction bottle for post-anesthesia evaluation of the distribution of consumed carbon dioxide absorber granules in the canister].

Anesthetic methods, apparatus, and respiratory care patterns have changed greatly in the past several decades. New scrutiny must be applied to patterns of carbon dioxide absorber consumption in the canisters in anesthesia circuits. Fine examination may be performed by extracting absorber granules by suction to avoid jumbling the granules in the canister. However, a general surgical suction apparatus has too narrow suction tubes, a low flow volume and too large reservoir bottles. We constructed a reservoir bottle of 1.5 l to trap the granules. The bottle is closed with an easily removable lid penetrated by inlet (with a larger diameter) and outlet cannulas. A conventional heat and moisture exchange filter is affixed to the outlet to prevent contamination of the suction system by alkaline absorber dust. Suction may be applied by a vacuum cleaner with a higher flow rate. Traditional recommendation to use baffles along the inside wall of the canister to prevent "channeling of exhaled gases by the wall effect" may turn out to be misleading.

Anesthesia↗
PubMed1992

Suction purpura.

BACKGROUND: Purpuric eruptions due to local mechanical causes are commonly seen, particularly in children. These eruptions are not always recognized as isolated purpura, and the patient may be submitted to an unnecessary extensive hematologic workup. We present various causes of suction purpura and outline a logical investigational approach. OBSERVATIONS: Suction purpura result from an external force exerting negative pressure on a circumscribed area of the skin, producing small grouped petechiae. We present a number of such suction purpura-causing mechanisms: Pressure during the delivery of a neonate, children's habits or play activities, and iatrogenic causes produce similar cutaneous lesions. We also describe the gas mask suction purpura for the first time. CONCLUSIONS: Once the causative factor is established, there is no need for further investigation or treatment of suction purpura. The lesions will fade completely within a few days.

Adolescent↗
PubMed1992

[What suction drainage is optimal for drainage of wound secretion? A clinico-experimental study exemplified by the knee joint].

In a randomized clinical study on 40 intraarticular knee joint drainages the effect of a high vacuum, middle vacuum, low vacuum and suction free drainages were examined. The maximum of the volume that was drained had been in the group of the suction free drainages. Drains with a long period of suction had a minimum of evaluated ultrasonographic effusion in the knee joint. The group with high vacuum was obviously not as long as open as in the other groups. Thrombi in the drainages could be found in every group. This refers to the observation that the finding of adherent thrombi is related to the material the drain is made of. Adherent thrombi decrease the possibility of secretion, not adherent thrombi do not decrease suction volume. Referring to these results it is obvious that not the high-vacuum drainage is the matter of choice for intraarticular drains. The suction-free drainages or drains with reduced vacuum have more advantages in respect to simple, secure and fast implantation and handling.

Equipment Design↗
PubMed1991

Pneumothorax: a complication of deep endotracheal tube suction: report of 3 cases.

Endotracheal suction plays a major role in providing airway care but it is nor without inherent hazard. In routine practice of pediatric intensive care, the suction catheter is usually inserted until slight resistance is felt and is then withdrawn. Here we report three instance in last year of a rare complication of suction - secondary pneumothorax after bronchial perforation due to deep endotracheal suction. It should always be first suspected in an infant who suddenly deteriorates during or after such suction procedure. Premeasurement of the appropriate depth for catheter insertion, with the tip no more than 1 to 2 cm beyond the carina, is also suggested to minimize or prevent this complication.

Female↗