Use Of Ultrasonography In Assessment Research Articles

Perioperative Assessment of Difficult Airway Using Ultrasound—A Prospective Study

Background The study was conducted with the aim of determining the usefulness of ultrasonography in assessment of difficult airway preoperatively to compare and correlate airway assessment done clinically and airway viewed ultra sonographically with Cormack–Lehane classification of the direct laryngoscopy. Methodology This prospective, observational trial consists of total 150 patients undergoing elective surgeries under general anesthesia. The measurements recorded were interincisor gap, modified Mallampati’s classification, and thyromental distance and the airway assessment of ultrasound done. Based on the Cormack–Lehane classification of laryngoscopic view, patients were classified into different groups: group A—easy intubation and group B—difficult intubation, at the end of the study. Results In both the groups, demographic data were similar except weight, which was significant in group B. Ultrasound measurements of airway done at four levels—hyoid bone, suprasternal-notch, thyroid isthmus, and thyroid—were increased in group B compared with group A, with p-values 0.0002, 0.0001, 0.001, and 0.0001, respectively, showing significant results. Conclusion On the basis of our study, we conclude that by measuring the thickness of soft tissues in the anterior part of neck with ultrasound difficult airway can be predicted, thus ultrasound can be used for assessing difficult airway preoperatively.

Role of Transvaginal Ultrasound in Infertility: Experience at a Tertiary Care Hospital in Dhaka City

Background: Infertility problem is a global problem and now infertile couples are more aware for the treatment of infertility. Transvaginal sonography since 1995 has expanded the scope of use of ultrasonography in assessment of endometrial thickness, ovarian volume, follicular development in response to hormone in different phase of menstrual cycle in relation to infertility management. In this study it may be assumed that present study may help to establish transvaginal sonography as a new and reliable diagnostic method by which we will be able to proceed accurately with more confidence in diagnosing infertility.Objectives: The purpose of the present study was to assess the role of TVS in diagnosing& evaluating causes of infertility and the comparison between clinical correlation and TVS findings in infertility.Methodology: It is a Hospital based cross sectional study conducted in outdoor department of Obstetrics and Gynecology in Sir Salimullah Medical College (SSMC) and Mitford Hospital, Dhaka, Bangladesh and in a infertility clinic in Dhaka, from March 2009 to August 2009. Sample size was 98 cases of infertile women.Result: Amongst 98 women, 64 cases were represented with primary infertility and 34 patients came with secondary infertility; common age group is 29-35 years; most frequent TVS finding is PCOD with its various presentation and ovarian volume.Conclusion: Transvaginal sonography is painless, quicker, costeffective and can be done as a out door patient in the department. It can be used as a first-line diagnostic procedure for infertility in Bangladesh.But it demands costly equipments, special TVS probe as well as expertise of the operator. At present there are few number of IVF centres in some districts of Bangladesh where transvaginal sonography is the most useful procedure and they play an important role in the diagnosis of causes of infertility.Journal of Science Foundation, July 2017;15(2):41-47

Rabbit common calcanean tendon as an animal model: ultrasonographic anatomy and morphometry.

The aim of the present study was to evaluate usefulness of ultrasonography in assessment of rabbit common calcanean tendon, to describe its ultrasonographic anatomy and to perform morphometric analysis of this structure. Fifteen skeletally-matured New Zealand rabbits were used in the study. Ultrasonographic examinations of common calcanean tendon (CCT) were performed in longitudinal and transverse planes from caudal approach. Sagittal diameters of superficial digital flexor tendon and CCT were measured on longitudinal scans. Sagittal and transverse diameter, cross-sectional area and perimeter of the CCT were assessed on transverse scans. Statistical analysis was performed using StatisticaPL software (StatSoft®, Poland). In longitudinal images structure of CCT was clearly visualised. Its superficial hypoechoic part corresponds to superficial digital flexor tendon and deeper hyperechoic to gastrocnemius tendon. In transverse images cross-sectional area presented varied echotexture. Proximally, CCT was rounded in transverse section and became slightly wider and flattered distally. Statistical analysis showed no differences between results obtained from right and left hindlimb (p > 0.05). Measurements of sagittal diameter of CCT obtained in transverse planes were significantly higher than sagittal diameter measurements obtained in longitudinal plane in corresponding locations (p < 0.001). All performed measurements showed a growing trend with the increasing distance from the calcaneal tuber. Ultrasonography is suitable technique for assessment of CCT in a rabbit model and provides satisfactory images for morphometrical evaluation.

Usefulness of ultrasonography in assessment of laryngeal carcinoma

To evaluate the usefulness of ultrasonography in assessing laryngeal cancer. 72 patients with laryngeal carcinoma proven by surgery and pathology were enrolled. The pre-therapeutic ultrasonography and CT images were retrospectively evaluated, including tumour detection, localisation and invasion of intra- and extralaryngeal structures. A comparative assessment was made between the detection rate, correspondence rate of localisation and sensitivity and specificity of ultrasonography and CT. The mobility of the larynx was observed on real-time ultrasonography and compared with laryngoscopy. The detection rate of ultrasonography [63 (87.5%)/72] was lower than that of CT [72 (100.0%)/72] (p=0.006). The primary foci were accurately located in 59 (93.7%) of 63 lesions using ultrasonography compared with 70 (97.2%) of 72 lesions using CT (p=0.392). In the evaluation of invasion, the sensitivity and specificity of ultrasonography were similar to that of CT in most of the intra- and extralaryngeal structures (p=0.059-1.000). A higher specificity was obtained during the assessment of the paraglottic space involvement when using ultrasonography than CT (94.9% vs 66.7%, p=0.001). For vocal cord fixation, no statistical difference was found between ultrasonography and laryngoscopy (p=0.223). Ultrasonography could be used as a valuable supplementary imaging method to CT and laryngoscopy in the assessment of laryngeal carcinoma, even in male adults with some calcifications of the thyroid cartilage. Our study demonstrates that ultrasonography, which has been used scarcely in the larynx, could supply useful information on the detection, localisation and intra- and extralaryngeal invasion of laryngeal carcinoma.

Ultrasonography for Monitoring Reproductive Function in the Bull

Diagnostic ultrasonography has been widely used for examination of the reproductive tract of female cattle, but more sparingly in bulls. Typical clinical ultrasonographic examinations of bull testes are unlikely to affect semen quality or sperm production. The ultrasonographic anatomy of bull testes and accessory sex glands has been reported. Although testicular echogenicity increased (i.e. the parenchyma appeared more white) as a bull approached puberty, echogenicity was not superior to scrotal circumference as a predictor of puberty. Ultrasonography can be used to detect and characterize testicular pathology. It is noteworthy that areas of increased echogenicity (testicular fibrosis) are common, especially in young bulls, but are not associated with decreased semen quality (e.g. percentage of morphologically abnormal sperm). Neither visual evaluation nor computerized pixel analysis of testicular ultrasonic echotexture was consistently predictive of semen quality in bulls. Therefore, we concluded that the primary clinical use of ultrasonography in assessment of reproductive function in the bull is characterization of grossly detectable lesions in the testes and scrotum.

Ultrasonographic assessment of the reticular motility in cows after administration of different doses of metoclopramide and neostigmine

The aim of the present study was to use of ultrasonography for assessment of reticular motility after administration of various doses of metclopramide and neostigmine in cows. A total of ten Holstein cows were used in six trials in each one single dose of each drug was used. Metoclopramide was used at 0.1, 0.2 and 0.3 mg/kg intramuscularly, whereas neostigmine was used at 0.02, 0.03, and 0.04 mg/kg subcutaneously. Reticular motility was assessed using 3.5 MHz transducer just before drugs administration and every 20 minutes after administration with total time of two hours. At twenty minutes postadministration, metoclopramide at a dose rate of 0.3 mg kg significantly (P<0.01) produced shortening of the interval time between the two biphasic reticular contractions by 25% and significantly (P<0.05) increased the amplitude of the first reticular contraction by 42%, but with mild neurological signs. Neostigmine produced non-significant increase in reticular contraction rate and strength. The results of the present study indicate that metoclopramide and neostigmine at selected doses are not clinically useful agents for increasing reticular contraction rate and strength. The findings of this study in healthy animals may not be extrapolatable to findings in cattle with reticuloruminal hypomotility.

The use of ultrasonography for assessment of tendon damage

The use of ultrasonography for assessment of tendon damage