SEARCH · PubMed Health

Results for “TENTS”

Explore indexed PubMed citations for clinical trials, systematic reviews and public health research. Read source abstracts and follow each citation to its original PubMed record.

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

At least 37 records · Page 2Linked to original sources

PubMed1990

Laminaria tent for diagnostic and operative hysterectomy.

Laminaria tents were inserted in 300 nonpregnant women to induce cervical dilation before diagnostic or operative hysteroscopy. All laminaria tents were inserted without anesthesia following uterine sounding. Diagnostic hysteroscopic procedures were performed with a 5.0 mm hysteroscope with video monitoring within 2-3 hours after insertion of the laminaria tent. Minimal analgesia was used. Operative procedures were performed approximately 24 hours after insertion of the laminaria tent with a 9 mm operative resectoscope. There were no complications with the use of the laminaria tent, such as infections or bleeding, but a few patients complained of mild menstrual-like lower abdominal discomfort. In all cases, the laminaria tent resulted in a softening and dilation of the cervix, which facilitated the passage of the diagnostic and operative hysteroscope.

Adult↗

PubMed1990

Synthetic laminaria tent for cervical ripening.

The efficacy and safety of a synthetic laminaria tent (Lamicel; Cabot) in ripening the cervix before induction of labour was compared with prostaglandin E2 (PGE2) oral tablets used intravaginally. Eighty patients were randomly assigned to use of the laminaria tent (N = 40) or PGE2 (N = 40). There were an equal number of primigravidas and multigravidas in each group. The only significant difference between the groups was the higher frequency of uterine hypertonicity (29 v. 5 : PGE2 v. tent) and consequent fetal distress (5 v. 1 : PGE2 v. tent) in the PGE2 group. However, the duration of labour was shorter in the PGE2 group than in the tent group (10, 14 h v. 11,61 h). These findings indicate that the synthetic laminaria tent is the preferred agent for cervical ripening in high-risk pregnancies and in developing countries.

Administration, Intravaginal↗

PubMedDate not supplied

Globe tenting: a sign of increased orbital tension.

Globe tenting is a change in the posterior globe configuration that results in a tented or conical appearance and is objectively defined as a posterior globe angle of less than 130 degrees. Globe tenting is caused by an acute/subacute intraorbital mass effect producing significant proptosis with tethering of the globe by the stretched optic nerve. In this series of 10 patients, globe tenting was produced by subperiosteal abscess (five cases), hemorrhage into a lymphangioma (two cases), a varix (one case), traumatic carotid hemorrhage into a lymphangioma (two cases), a varix (one case), traumatic carotid cavernous fistula (one case), and multiple epithelial implantation cysts (one case). Progressive narrowing of the posterior globe angle correlated with an increase in proptosis and in optic nerve length, as well as with more severe visual impairment. Tenting with a posterior globe angle of 120-130 degrees correlated with mild visual symptoms and a good recovery. A posterior globe angle of less than 120 degrees with acute proptosis constitutes a surgical emergency; a delay in surgical decompression in these patients may prevent complete recovery of visual function. CT is useful in providing good characterization of globe tenting and, thus, in helping to determine the clinical significance of this abnormality.

Adolescent↗

PubMed2004

Carbon monoxide poisoning while using a small cooking stove in a tent.

Carbon monoxide (CO) is formed wherever incomplete combustion of carbonaceous products occurs.(1) CO is the leading cause of poisoning in the United States, and common sources of CO poisoning include housefires, automobile exhaust, water heaters, kerosene space heaters, and furnaces.(2) Stoves used for cooking and heating during outdoor activities also produce significant amounts of CO. Mountain climbers have been reported to succumb to fumes generated by small cook stoves.(3) The aim of this study was to investigate if burning a cooking stove inside a tent is a potential health hazard. Seven healthy male volunteers used a cooking stove inside a small tent for 120 minutes. CO levels in the ambient tent air were measured in addition to hearth rate (HR) and pulse oximetry (SpO2). Venous blood samples were obtained every 15 minutes for measurement of carboxyhemoglobin (COHb). After 2 hours, all the subjects had significant CO levels in their blood (mean COHb = 21.5%). Mean SpO2, also fell from 98% to 95.3% (P <.05), whereas mean HR increased from 63 to 90 beats/min (P <.05). Kerosene camping stoves do produce CO when burned in a small tent. The concentration is high enough to cause significant COHb levels in venous blood after 120 minutes' stay in the tent.

Acute Disease↗

PubMed2006

Geometric differences of the mitral valve tenting between anterior and inferior myocardial infarction with significant ischemic mitral regurgitation: quantitation by novel software system with transthoracic real-time three-dimensional echocardiography.

We sought to investigate the 3-dimensional geometric differences of mitral leaflet tenting in ischemic mitral regurgitation, comparing inferior and anterior myocardial infarction (MI). Using real-time 3-dimensional echocardiography, we obtained transthoracic volumetric images for patients with significant ischemic mitral regurgitation (9 inferior and 7 anterior). With our novel software system, 3-dimensional images of the leaflets were reconstructed for quantitation. Mitral leaflet configuration was then represented in contour in which the degree of the tenting could be observed. Calculated percent of tethered leaflet area (>5-mm tenting from the annular level) was compared in inferior and anterior MI. Percent of tethered leaflet area was significantly smaller in inferior than anterior MI, reflecting the localized leaflet tenting in inferior MI (16.7 +/- 18.8% vs 38.9 +/- 9.7%, P = .01). In anterior MI, mitral valve leaflets were widely tethered toward the left ventricle, in contrast with inferior MI showing localized tenting of the leaflet.

Aged↗

PubMed2000

Pleural tent after upper lobectomy: a prospective randomized study.

BACKGROUND: The aim of the present study was to assess the cost/efficacy of the pleural tent procedure after upper lobectomy. METHODS: A prospective randomized analysis was performed on 50 patients submitted to upper lobectomy and divided into two groups: group 1 (25 patients) with pleural tent; group 2 (25 patients) without pleural tent. RESULTS: The univariate comparison between the two groups did not show any significant difference in terms of age, gender, spirometry, smoking history, chronic obstructive pulmonary disease index, side of tumor, arterial oxygen tension, arterial carbon dioxide tension, size and location of tumor, presence of pleural adhesions, length of the stapled parenchyma, and operative time. Pleural tent significantly reduced the days of postoperative air leak (1.2 versus 5.8, p = 0.01), chest tubes (5.4 versus 10.4, p = 0.01), and hospital stay (6.9 versus 10.8, p = 0.01). Moreover, no difference was noted between the two groups in terms of pleural effusion in the first postoperative 48 hours, need of postoperative blood transfusion, and occurrence of other complications. CONCLUSIONS: Pleural tenting after upper lobectomy is a safe and effective procedure and its routine use is warranted.

Adult↗

PubMed1977

Pseudobacteremia: false-positive blood cultures from mist tent contamination.

In the seven-month period from July 1975 through January 1976, 11 pediatric patients had Acinetobacter calcoaceticus var. anitratus cultured from blood; this organism had not been isolated from pediatric patients in the previous six months. In 10 of 11 patients, only the first of two cultures was positive. All patients recovered uneventfully, although only two were treated with appropriate antibiotics. Nine of 11 had been in mist tents at the time of the culture. Mist cultured from one tent contained the same organism found in the patient's blood culture. Eight of 10 patients, however, had blood for culture drawn from the same needle as samples for other blood work, compared with only three of 13 controls (p = .013); this represented a deviation from proper blood culture technique, and a mock trial confirmed contamination of blood cultures when technique was broken. Contamination by this organism occurred in the tent water reservoir and mist, and the nose and skin of the children were colonized. The hands of respiratory therapy technicians and blood-drawing personnel became contaminated while handling the mist tents. Thorough attention to hand-washing, tent sterilization, and technique in drawing blood cultures stopped the pseudo-epidemic.

Acinetobacter↗

PubMed2006

Tent-shaped retinal detachments in retinopathy of prematurity.

BACKGROUND: Most retinal detachments associated with retinopathy of prematurity (ROP) are radial, segmental, or circumferential with cicatricial extraretinal fibrovascular proliferation (EFP) at the apex of the detachment. This report describes peculiar tent-shaped retinal detachments that developed among eyes with ROP. METHODS: An observational case series consisting of 9 patients and 13 eyes with tent-shaped retinal detachments. Their morphology, clinical baseline, surgical course, and final retinal status were extracted from medical records. RESULTS: Eight had simple tent-shaped retinal detachments, three had a double tent-shaped retinal detachment, one had a chevron-based retinal detachment, and one had a star-shaped retinal detachment. Each case had a disk based stalk that extended to the apex of the traction retinal detachment and continued anteriorly; 12 stalks inserted in the retrolental space and 1 terminated in the mid vitreous. Six eyes were stage 4A, two eyes were stage 4B, and five eyes were stage 5. Vitrectomy surgery was performed on 11 eyes. Surgery resulted in retinal attachment in nine eyes, and two retinas remained detached. CONCLUSION: Tent-shaped retinal detachments are seen in patients with ROP. A stalk should be sought in evaluation of these eyes. Vitreous surgery focused on relieving this traction is often successful.

Diagnosis, Differential↗

PubMed1989

Preoperative dilatation of the cervix at legal abortion with a synthetic, fast-swelling hygroscopic tent.

Preoperative dilatation of the cervix at first trimester legal abortion has been shown to facilitate the vacuum aspiration procedure and to reduce per- and postoperative complications as well as late sequelae. The present study represents a clinical trial in which a new synthetic hygroscopic tent, Dilapan, has been evaluated. Dilapan tents of different diameters with different durations of cervical exposure were tested on a case material of 450 nulliparous women. It was found that treatment with 4 mm tents during 3-4 h or 3 mm tents during 16-20 h produced a cervical dilatation that allowed an easy evacuation of the uterus with a minimum of complications. The advantage of this particular tent is its property of rapid swelling.

Abortifacient Agents↗

PubMed1999

Efficacy of dural tenting sutures.

OBJECT: The goal of this study was to assess the necessity for the prophylactic use of dural tenting sutures. METHODS: Data that had been prospectively collected from 369 consecutive cranial operations in adults were analyzed. In this series of patients, dural tenting sutures were used on a judicious "as needed" basis. They were never used to satisfy a procedural routine or for use as a prophylaxis against epidural hemorrhage that was not apparent. Tenting sutures were used for the control of epidural bleeding in 33 patients (8.9%); no tenting was required in 336 patients (91.1%). Reoperation for postoperative epidural hematoma was not required in this series. CONCLUSIONS: Dural tenting sutures continue to have an important role in neurosurgery; however, there is no compelling evidence to support their traditional prophylactic use in every intracranial operation.

Adolescent↗

PubMed1986

Randomized comparison of different prostaglandin analogues and laminaria tent for preoperative cervical dilatation. World Health Organization Special Programme of Research, Development and Research Training in Human Reproduction: Task Force on Prostaglandins for Fertility Regulation.

In an eleven-centre study, 627 nulliparous subjects in the 8th to 12th week of gestation admitted for termination of pregnancy were allocated to one of five treatments to induce pre-operative cervical dilatation. The treatments were: 0.5 mg PGE2 methyl sulphonylamide; 1.0 mg PGE1 methyl ester; 30 mg 9-methylene PGE2 free acid, 0.5 mg 15-methyl PGF2 alpha; a single medium-sized laminaria tent. The results indicate that the three PGE analogues are at least equally effective as one medium sized laminaria tent and more effective than 0.5 mg 15-methyl PGF2 alpha in producing adequate pre-operative cervical dilatation prior to vacuum aspiration. It is concluded that both pre-treatment with prostaglandin analogues and laminaria tent are effective methods for preoperative cervical dilatation and both types of treatment are associated with a low incidence of side effects. Prostaglandin analogue treatment can be administered by paramedical personnel but laminaria tent insertion has to be performed by medical staff.

16,16-Dimethylprostaglandin E2↗

PubMed1989

The effect of cervical dilatation by laminaria tent in first trimester legal abortions on blood loss related to fibrinolytic activity in the decidua and placenta.

Increased blood loss (BL) has been reported after cervical dilatation by laminaria tent in legal abortions. The BL was measured in 72 women in whom first trimester legal vacuum aspiration was performed. The cervical canal was dilatated by laminaria tent in 37 patients, and mechanically with Hegar dilators in 35 patients. BL was studied in relation to the plasminogen activators (u-PA, t-PA) and the plasminogen activator inhibitors (PAI-1, PAI-2) in the decidua and placenta. There was no significant difference in BL between the two groups. Decidual PAI-1 concentrations were significantly higher in the laminaria tent group than in the Hegar dilator group. An inactivation of u-PA by PAI-1 might explain the lack of increase in BL among the laminaria tent group.

Abortion, Induced↗

PubMed2006

Value of mitral valve tenting volume determined by real-time three-dimensional echocardiography in patients with functional mitral regurgitation.

This study sought to evaluate mitral valve tenting volume (TnV) as a clinical parameter using real-time 3-dimensional echocardiography in patients with functional mitral regurgitation (MR). In 27 patients with functional MR and 4 controls without mitral disease, real-time 3-dimensional echocardiographic images were obtained to measure TnV frame by frame from presystole to end-systole. The maximal and minimal TnVs during systole were identified in each patient, and mitral annular areas and tenting heights were also measured. Using 2-dimensional echocardiography, tenting area (TnA) was measured from the apical long-axis, apical 4-chamber, and apical 2-chamber views. The regurgitant orifice area was measured by the proximal isovelocity surface area method. Maximal and minimal TnVs occurred at the time of 2 +/- 6% and 78 +/- 6% of whole systolic duration, respectively, and the systolic percentage change of TnV was related to that of tenting height but not to that of mitral annular area. TnA on the long-axis images was significantly larger than that on the 4- and 2-chamber images (2.5 +/- 1.4 vs 1.7 +/- 1.3 and 1.9 +/- 1.4 cm(2), respectively, p <0.001). Regurgitant orifice area was significantly correlated with maximal TnV (r = 0.90), minimal TnV (r = 0.86), and TnA on the long-axis (r = 0.79), 4-chamber (r = 0.75), and 2-chamber (r = 0.73) images. Among minimal TnV and 3 TnAs, minimal TnV was the only independent determinant of regurgitant orifice area (p <0.001). Minimal TnV >or=3.90 ml identified significant functional MR with a sensitivity of 86% and a specificity of 100%. In conclusion, TnV derived from real-time 3-dimensional echocardiography is a preferable novel single index for assessing mitral valve tethering in functional MR to TnA that is dependent on the location of 2-dimensional planes.

Blood Flow Velocity↗

PubMed2000

Low level of bacterial contamination of mist tents used in home treatment of cystic fibrosis patients.

Mist tents are recommended by the Stockholm cystic fibrosis (CF) centre for small children with CF. Daily disinfection of some parts of the tent with 2% acetic acid is recommended, and for other parts boiling water followed by air-drying without rinsing. The plastic tent is discarded each day. We have studied whether these prescribed routines are followed by the patients and whether they are sufficient to prevent bacterial contamination. The mist tent equipment of 20 CF patients (mean age 7 years, range 1-15 years), two of whom were chronically colonized with Pseudomonas aeruginosa, were investigated. All patients were visited at home in the morning after 6-12 hours aerosol therapy. Liquid from the nebulizing chambers and swabs from the aerosol tube were examined by culture on four different media. Seventeen of 20 patients claimed that they cleaned and disinfected the tubes every day, two patients every other day and one once a week. Seventeen of 19 claimed they cleaned and disinfected the chambers daily, one once a week and, one twice a week. No or insignificant growth was found in 16/20 aerosol tubes: moulds in three, Pseudomonas species in one. Twelve of 19 chambers showed no or insignificant growth: moulds or yeasts were present in three and Pseudomonas sp. in four. In four of the seven patients moulds or yeasts and/or Pseudomonas sp. grew both from chambers and from aerosol tubes; in the remaining three only from chambers. None of these seven patients had followed our prescribed cleaning and disinfection recommendations, the other 13 claimed they had. Of the patients whose equipment yielded Pseudomonas sp, none was colonized with these strains, although one had P. aeruginosa. We conclude that our disinfection recommendations are adequate when followed. However, our disinfection recommendations concerning the nebulizing chamber had not been followed satisfactorily. The different forms of non-compliance would not have been detected without a home visit, emphasizing the importance of such visits. The importance of drying the equipment and of using the correct concentration of acetic acid is stressed.

Adolescent↗

PubMedDate not supplied

Analysis of a medical tent at the Toronto Caribana Parade.

OBJECTIVES: To review the experience with an on-site medical tent for a mass gathering and to analyze patient records in a manner to more appropriately allocate resources and identify possible delays in definitive care. METHODS: The logistics of providing an on-site medical tent is reviewed, followed by a retrospective chart review of 126 patients over a two-year period. Prior to the chart review, an injury classification was developed that categorized patients based on the necessity of transport to hospital. Data were also analyzed for times of peak patient flow, types of injuries, and needless delays in definitive care. RESULTS: An average of 63 patients (95% CI 44-77) were seen in the tent and 1.3 patients sought care per 10,000 spectators. Peak times were between 1600 and 2000 hours. The average number of patients each hour was 6.5 (95% CI 0-13). Severe, intermediate, and minor injuries accounted for 16%, 38%, and 46% of total injuries, respectively. Nine cases were found where the patients arrived and left the medical tent by ambulance. Four of these instances may have represented a needless delay in definitive care. The details of each of these cases are reviewed. CONCLUSIONS: The results indicate that on-site medical coverage, with appropriate supports, is indeed safe. The frame-work provided with regard to setup and analysis of work-load will help others in the planning of medical care for similar mass gatherings.

Anniversaries and Special Events↗

PubMed1995

Reducing the induction to abortion interval in termination of second trimester pregnancies: a comparison of mifepristone with laminaria tent.

OBJECTIVE: To determine whether mifepristone (RU486) is more effective than laminaria tent in shortening the induction-abortion interval in termination of second trimester pregnancies with gemeprost. DESIGN: Prospective randomised comparative trial. SETTING: Department of Obstetrics and Gynaecology in a University teaching hospital. SUBJECTS: Sixty-two women undergoing termination of pregnancy in the second trimester. INTERVENTIONS: The women were allocated at random to one of the two treatment groups. The first group received 600 mg of mifepristone 36 h before administration of gemeprost. In the second group, a medium-sized laminaria tent was inserted 12 h before gemeprost. The pregnancies in both groups were terminated with vaginal gemeprost, 1 mg every 3 h up to a maximum of 5 mg/day. MAIN OUTCOME MEASURES: Induction-abortion intervals, amount of gemeprost required, and incidence of side effects. RESULTS: The median induction-abortion interval in the mifepristone group (7.5 h) was significantly shorter than that in the laminaria tent group (11 h) and significantly fewer gemeprost pessaries were required. There was no significant difference in the amount of narcotic analgesics required or the incidence of side effects between the two groups. CONCLUSIONS: Mifepristone is more effective than laminaria tent in shortening the induction-abortion interval in termination of second trimester pregnancies.

Abortifacient Agents, Nonsteroidal↗

PubMed1998

Dural tenting sutures in pediatric neurosurgery.

Dural tenting sutures were used on a selective basis in 329 consecutive cranial operations in children; 16 (4.8%) required dural tenting sutures for the control of epidural bleeding and 313 (95.2%) required no dural sutures. Dural tenting sutures were never placed for prophylaxis or to satisfy a routine. Reoperation for postoperative epidural hematoma was required in 1 child (0.3%) and that child was subsequently discovered to have hemophilia. The author concludes that there is no compelling evidence for the prophylactic use of dural tenting sutures in children.

Adolescent↗

PubMed2004

Pleural tenting in complicated primary spontaneous pneumothorax.

AIM: To assess the efficacy of pleural tenting in patients with complicated primary spontaneous pneumothorax (PSP). METHODS: From 1988 through 2001, 43 patients underwent operations. Mean age was 30.4 years; the male/female ratio was 9.7. Twenty-one (48.8%) underwent pleural tenting in addition to bulla excision (experimental group, EG). Twenty-two (51.2%) underwent bulla excision plus pleural abrasion (11 patients), apical partial pleurectomy (9 patients) and complete apical pleurectomy (2 patients) (control group, CG). The most frequent symptom was chest pain (37.2%). Surgical indications were recurrence in 21 (48.8%), prolonged air leak in 12 (27.9%), failure of expansion without air leak in 6 (13.9%), high risk occupancy in 2 (4.6%) and empyema due to air leak in 2 (4.6%). RESULTS: Air leak time was decreased by tenting (1.9 days vs 3.7 days) as well as time of drainage (4.8 vs 6.9) and hospital stay (5.8 vs 7.9). Morbidity was 9.5% in EG and 9.1% in CG. Causes of morbidity were postoperative hematoma, prolonged air leak, expansion failure and blunt posterior sinus one of each. Re-operation needed for postoperative hematoma in CG. Mean follow-up was 5.1 years and 1 (4.5%) recurrence observed in CG. CONCLUSION: Tenting of the dependent lung from the apical pleura after bullectomy via axillary thoracotomy lessens air leak time without recurrence and low morbidity.

Adolescent↗