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The fourth industrial revolution, which will alter the globe, is commonly referred to as Blockchain technology. Blockchain technology provides a decentralized, distributed, and central authority-free environment. Since Bitcoin launched Blockchain, research has been continuing on non-financial use cases to extend their applicability. Healthcare is an industry with a significant influence on the Blockchain. Healthcare has penetrated the enthusiasm for the changing nature of Blockchain technology. Blockchain is frequently viewed as the most necessary and optimal healthcare technology to handle sophisticated and complex security and interoperability concerns. More significantly, the “value” and trust-based system’s smart contract mechanism can offer automatic action and reaction. Healthcare, on the other hand, is a complex system. In this paper, we introduce the blockchain and its properties, as well as the significance of the blockchain in healthcare. It also provides blockchain administration, adjudication of claims, interoperability, and application. While in several situations, we observed blockchain technology, the use of blockchain in health care was highly addressed in this paper and the reason why blockchain should be utilized. We introduce the advantages of blockchain as well. Furthermore, we examined the difficulties and prospects for the future and how they may be implemented in more healthcare industries. The paper also discusses the current level of Blockchain application development for healthcare and its limits and topics for further research. This paper aims to demonstrate how Blockchain technologies may be utilized in healthcare and what problems this technology may face in the future and what the Blockchain’s prospects are.

Background: The tracheobronchial tree is a branched distribution system that carries air from the trachea down to the acini which are the gas exchange units of the lung. In the trachea air speed is high and the airway is particularly vulnerable to obstruction by foreign bodies and tumors. The study of the morphological variations of luminal diameter of the trachea is of profound clinical importance as it may help the clinicians for smooth conduction of some maneuvers like endotracheal intubation and bronchoscopic procedure. It also helps the surgeons to deal with resection and reconstruction of the trachea.Objective: The present study was carried out to establish a Bangladeshi standard regarding the luminal diameter of the trachea and to minimize the dependency on foreign standards.Materials and Methods: This cross sectional descriptive study was performed on 70 post mortem human trachea (44 male and 26 female) to find out the difference in luminal diameter of the trachea of Bangledeshi people in relation to age and sex. The specimens were collected from the morgue in the department of Forensic Medicine, Mymensingh Medical College, Mymensingh by purposive sampling technique. All specimens were grouped into three groups according to age ? Group A, B and C. Dissection was performed according to standard autopsy techniques. The trachea was cut horizontally through the upper border of the 5th tracheal ring and the luminal diameter was measured. The average diameter was expressed in centimeter. All data were recorded in the predesigned data sheet and statistical analysis was done using computer based statistical package, SPSS to evaluate the significance of variance between the different findings.Results: In the present study the maximum luminal diameter of the trachea was 1.65 in Group A, 2.05 in Group B and 1.85 cm in Group C. The minimum luminal diameter of the trachea was 0.7 cm in Group A, 0.85 cm in Group B and in Group C 0.85 cm. The mean (±SD) luminal diameter of the trachea was 1.24 ± 0.3, 1.39 ± 0.3 and 1.29 ± 0.23 cm in Group A, B and C respectively. The maximum mean luminal diameter of the trachea was in Group B (1.39 cm) and minimum was in Group A (1.24 cm). The mean difference of luminal diameter of the trachea between groups was statistically non significant at p>0.5 level. The maximum mean (±SD) luminal diameter of the trachea was 1.50 ± 0.3 cm in male in Group B and minimum mean (±SD) luminal diameter of the trachea was 1.17 ± 0.26 cm in female in Group C. The mean luminal diameter of the male trachea was found to be greater than that of the female trachea among the age group. Mean difference between sexes in Group B was statistically highly significant at p

Background: Congenital heart diseases (CHD) are one of the most common developmental errors in humans.Objectives: The purpose of the present study was to see the frequencies of various types of atrial septal defect (ASD) and associated cardiovascular disorders in patients undergoing surgical repair.Methodology: This cross-sectional descriptive study was conducted on patients undergoing surgical repair at the National Institute of Cardiovascular Diseases (NICVD) and National Heart Foundation and Research Institute (NHF&RI) in Dhaka during the period of July, 2010 to June, 2011. Patients presented with ASD at any age of both sexes were selected as study population. Diagnoses were revealed with echocardiography and confirmed preoperatively by registered cardiac surgeons.Results: The morphological types of ASD were Ostium secundum type in 96% cases and sinus venosus type in 4% cases. Atrial septal defects were either small or larger defects associated with pulmonary hypertension in 38(76%) cases, varying degree of tricuspid regurgitation was seen in 33(66%) patients and dilated pulmonary artery was noted in 24(48%) cases. Ventricular septal defect in 4(8%) cases, tricuspid atresia in 2(4%) cases and mitral valve prolapse in 6(12%) cases were also observed.Conclusions: Ostium secundum type of ASD is found to be the commonest type of ASD.J Shaheed Suhrawardy Med Coll, 2015; 7(1):18-21