جستجوی مقالات مرتبط با کلیدواژه « cannula » در نشریات گروه « پزشکی »

With the expansion of the COVID-19, the study of different oxygen therapy methods has yielded different results. In the current study, we compare the effects of non-invasive ventilation and oxygen therapy through the high-flow nasal cannula.

Non-intensive care unit-admitted COVID-19 patients were randomly divided into two groups. The first group received oxygen therapy with High Flow Nasal Cannula (HFNC) and the second group received Non-Invasive Ventilation (NIV). Clinical conditions and results obtained from laboratory tests were compared in two groups before oxygen therapy, and after 24 and 48 hr.

The average age of the participants was 56.25. According to the results, after 24 hr of respiratory intervention, dyspnea was the most frequent in the NIV group with 83.33% and in the HFNC group with 90%. After 48 hr, in the NIV group, nasal flaring was observed with a frequency of 60%, and in the HFNC group, weakness and lethargy were the most common symptoms (56.66%). Comparison of clinical status and laboratory indices of the two groups of patients showed that most of the indices in patients in three time periods were not significantly different, while the results demonstrated that after 24 hours, the mean PaCo2 in the HFNC group was significantly lower than the NIV group (0.002) and the mean PH in the HFNC group was significantly higher than the other group (p=0.039).

The effectiveness of using HFNC compared to NIV is the same and shows no significant difference.

Neonatal respiratory distress syndrome (RDS) is a problem that often occurs in preterm neonates. The present study was conducted to compare the efficacy and complications of humidified high flow nasal cannula (HFNC) with those of nasal continuous positive airway pressure (NCPAP) after surfactant therapy in neonates with RDS. This clinical trial was conducted on 60 neonates with the gestational age of 28 - 36 weeks suffering from RDS and admitted to Fatemieh Hospital in Hamadan, Iran, during 2017. Initially, all newborns were administered with exogenous surfactant. Subsequently, the participants were randomly assigned into two groups of HFNC (group 1) and NCPAP (group 2) to receive respiratory support. The NCPAP group was managed with a mask or nasal prong. The HFNC group was given warm and humid oxygen through a short binasal cannula proportional to the weight of each neonate until the recovery of respiratory distress. The mean one-minute Apgar scores were obtained as 6.23 ± 1.55 and 6.60 ± 1.07 in the HFNC and NCPAP groups, respectively. Furthermore, the mean five-minute Apgar scores were 8.0 ± 1.11 and 8.17 ± 0.95 in these groups, respectively. The mothers and neonates in both groups were comparable in terms of demographic and clinical data, except for gestational age and neonatal gender (P = 0.05). Furthermore, there was no statistically significant difference between the HFNC and NCPAP groups regarding the respiratory outcomes (P = 0.05). As the findings indicated, humidified high flow nasal cannula was as effective as nasal continuous positive airway pressure in the management of respiratory distress in premature neonates with the gestational age of 28 - 36 weeks. Consequently, these two interventions could be used interchangeably for the provision of respiratory support among these patients.

Intravenous catheterization is a routine technique in medical centers which can cause diverse problems such as thrombophlebitis.
This study aimed to resolve replacement scheduling and proper cannula diameter and position issues for intravenous catheters.
In this 2015 experimental cohort study, 232 hospitalized patients receiving medication intravenously were assessed for the occurrence of thrombophlebitis (TF). Involved TF factors such as age, gender, cannula size, site of cannula in hand veins, duration of usage, and underlying disease were evaluated in patient and healthy control groups.
TF developed in 55 of 232 patients. The percentages of incidence were similar in men and women (30%). The patient mean age was lower than that of the control, but the difference was not significant. Average weight was significantly higher in the patient group than in the control group. The average duration of cannula in situ was significantly lower in patients than in the control group. The highest rate of TF occurred in the narrowest cannula usage and dorsal hand vein positions. The mean time of developing TF was lower than that indicated in CDC guidelines. Furthermore, 24 patients with TF (34%) had diabetes mellitus.
In the current study, the percentage of TF occurrence was higher in patients with weight increase, use of narrower cannulae, dorsal hand vein positions, and a history of diabetes. Furthermore, TF can develop within 72 hours. It was concluded that some patients may be more susceptible to TF and require more care. Accordingly, the CDC guidelines’ offered scheduling for intravenous catheter replacement is not trustworthy.

To report the authors'' experience in Suction and Evacuation with cannula followed by maintenance of negative pressure in the uterine cavity by keeping the cannula inside for 20-30minutes, which was performed for controlling intractable postpartum hemorrhage (PPH) in a tertiary care hospital. This is a retrospective observational study carried out from July 2011 to December 2012 at our institute. Nine patients who delivered either vaginally or via caesarian section and developed primary PPH refractory to conventional medical treatment, were included in the study. Suction and evacuation of the uterine cavity was done and then the cannula was kept inside the uterine cavity for 20-30 minutes thereby maintaining negative pressure (400-600mmHg) in the cavity. Data were retrieved from patients'' hospital records. Intractable primary hemorrhage was encountered in 9 patients of whom 6 had bleeding after caesarian section and 3 after vaginal deliveries. Uterine atony due to prolonged labour was the commonest cause. Hemorrhage was effectively controlled in 8 out of 9 cases (88.9%) and hysterectomy was avoided. In one patient (11.1 %) the procedure failed and life saving hysterectomy was done to control the bleeding. This approach not only controls PPH but also preserves the woman´s reproductive functions and avoids hysterectomy and its related complications and consequences. This is a simple conservative surgical method to treat PPH in low resource settings. It requires minimal training, conserves the uterus, and is technically less challenging and associated with less blood loss than hysterectomy.

Polyacrylamide gel (PAAG) has been used extensively for soft tissue augmentation. Complications of PAAG injection mandate evacuation of filler.

This study aimed to introduce a new method of evacuating PAGG with the help ultrasonography markings on face.
Patients and

We enrolled patients who were unsatisfied with the results of injection or had developed complications such as induration, gel migration, or infection referred to our clinic to evacuate the filler since 2011. Patients were examined by ultrasonography and a radiologist reported the volume, place, and depth of gel as well as fibrosis and marked them on the patients’ face or its photographs. We used Barikbin’s tumescent solution to facilitate the evacuation of concentrated gel and reduce the risk of injury to vital tissues. We inserted a 16G-fat-transfer cannula through a hole on the nasolabial folds and evacuated the gel by vacuum force and milking. We also used a Barikbin’s blunt subcision blade to dissect fibrosis. The evacuated region was irrigated by tumescent solution. Patients’ satisfaction was assessed by visual analogue scale (VAS). The procedure was repeated at four-week interval until achieving favorable results.

We treated 173 patients, including 164 females (94.8%), with the mean (SD) age of 43.75 (10.62) years. According to VAS, 95.4% of patients reported complete satisfaction while 2 (1.2%) were unsatisfied with the results. Patients reported no complication of therapy.

Our method provided good results and performing evacuation under the guide of bedside ultrasonography is recommended