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Biomedical subjects

M N Skaredoff

Publications and source records attributed to M N Skaredoff.

10 recordsLinked to original sources
PubMed1987

Sorting efficiency.

Computers and the tasks they perform are becoming increasingly important in medicine. It behooves medical personnel to become familiar with some computer functions so that they may be in a better position to demand and evaluate a given implementation. One very basic computer task is sorting information. Some general principles of computing efficiency are discussed, as well as the standard "O" notation. A simple sort, bubblesort, is discussed and analyzed. A second elementary sort, insertionsort, is considered in relation to its more sophisticated descendant, shellsort. The most efficient in-memory sort, quicksort (and its various descendants), is likewise examined, and the advantages and disadvantages of each variant are discussed in some detail, as well as methods that may enhance speed and resource utilization. Finally, mergesort, which is used in sorting large files resident in mass-storage devices, is discussed, along with its particular advantages.

Algorithms↗
PubMed1986

Thorax--a program to assist in the preoperative risk assessment of patients undergoing thoracic surgery.

Patients who undergo thoracic surgical procedures often are at high risk. Several risk-scoring systems have been advocated; they are complex and unwieldy. Also, physicians-in-training need a teaching tool with a consistent format. A program for these needs has been written in the high-level language Modula-2 for the Macintosh Computer. The user enters height, weight and easily obtainable data. Normal values are accessed via a 'window' which is triggered by clicking the 'mouse'. When pulmonary data is entered, cardiovascular system questions are presented. The user is finally presented with entered data, calculated data and a risk estimate. Complications estimates are derived from a special LEARNER file. The program 'learns' from a constantly expanding database.

Computers↗
PubMed1986

A computerized system for rapid interpretation of acid/base disorders.

Rapid and correct interpretation of arterial blood gas results is necessary in the operating room or intensive care unit. However, manual calculation and interpretation is tedious and prone to error. A computer system consisting of two programs written in BASIC has been created to address these problems. The program uses a series of decisions to arrive at a conclusion. Data generated by the Interpreter may be used by a subsequent program, the Manager, in determining ventilation parameters.

Acid-Base Imbalance↗
PubMed1986

Hyperalimentation worksheet.

Parenteral hyperalimentation is an important means of nutritional support for critically ill patients. Calculating the amount of additives necessary for the appropriate compounding of hyperalimentations is a tedious process with many opportunities for error. A new computer program written in Pascal has been created to reduce pharmacy processing time. Menus and single-keystroke entry are implemented wherever practicable. A hard-copy printout and an individualized label are generated on command. Program testing has resulted in an 88% reduction of processing time.

Computers↗
PubMed1985

Iperalimentazione. A program to calculate hyperalimentation needs.

Parenteral hyperalimentation is an important means of nutritional support for critical care patients. Calculation of the amount of calories, components and additives necessary for the appropriate compounding of hyperalimentation solutions is a lengthy, tedious process with many potential opportunities for computation error. A new computer program written in Pascal has been created in order to reduce calculation time and error. Menus and single-keystroke entry are implemented wherever practicable. A review screen is employed to reduce user input errors. A hard-copy printout is generated on command. Program testing has resulted in a 90% reduction in processing time.

Computers↗
PubMed1982

Hypermagnesaemia and anaesthetic management.

The anaesthetic management of a pre-eclamptic parturient who was treated with high doses of magnesium sulphate and who developed hypermagnesaemia before delivery by Caesarean Section, is presented. The pharmacology of magnesium, particularly its effects at the neuromuscular junction, and clinical considerations of magnesium administration are discussed.

Adult↗
PubMed1981

Horner's syndrome during epidural anaesthesia for elective caesarean section.

Twenty ml of three per cent chloroprocaine solution was injected into the lumbar epidural space of a parturient for anaesthesia for elective caesarean section. Ten minutes after injection of the anaesthetic, the patient developed Horner's syndrome on the left side. The anaesthetic level was C7 on the affected side. Thirty minutes after the bolus dose of chloroprocaine the signs disappeared, at which time the patient received a reinforcing dose of 10 ml of chloroprocaine three per cent. The Horner's complex reappeared in eight minutes and persisted for 20 minutes. While Horner's syndrome is not uncommon in women in labour receiving lumbar epidural anaesthesia, it is virtually unknown in patients who are not in labour. The mechanism for the appearance of the syndrome in this case is unclear. The most likely explanation is that only a small amount of local anaesthetic was necessary to produce the syndrome and the subsequent bolus of anaesthetic followed pathways opened by the original dose, since a much smaller amount of anaesthetic was necessary to reproduce the syndrome.

Adult↗