Medicine and Health Sciences Commons^™

Mathematical Model Of Placental Oxygen And Carbon Dioxide Exchange, Ester P. Hill

Loma Linda University Electronic Theses, Dissertations & Projects

This model of placental CO₂ and O₂ exchange calculates the time course of changes in P_^CO2, [HCO₃^-], and [H⁺] in each of four "compartments" of placental exchange vessels: maternal erythrocytes, maternal plasma, fetal plasma and fetal erythrocytes. The changes in hemoglobin-bound CO₂ (carbamate) and oxyhemoglobin contents within the erythrocytes are also calculated, permitting consideration of the Haldane and Bohr effects. Equations were written to represent one-dimensional steady state CO₂ and O₂ diffusion between concurrent maternal and fetal capillaries and the subsequent hydration, carbamino and oxyhemoglobin reactions. The equations …

Sero-Epidemiology Of Q Fever With Special Reference To Complications In A Hospital Population Of Southern California, Ajit Singh Randhawa

Loma Linda University Electronic Theses, Dissertations & Projects

[Abstract Not Included]

Root Exposure And Its Effect On The Fluid Movement Within The Tooth, William J. Busch

Loma Linda University Electronic Theses, Dissertations & Projects

This study examined the fluid movement in dentin associated with the exposure of the root surface for varying periods of time ranging from 75 minutes to 30 days. Eight kittens received experimental defects on the roots of the canines. Just prior to sacrifice a fluorescing dye was injected intraperitoneally to make the fluid within the dentin visible under ultraviolet light. Frozen ground sections were prepared and examined. The results showed that the exposed side of the root had a reduced amount of fluid fluorescence when compared to the opposite side of the tooth which had an intact root surface. The …

The Degree And Time-Course Of Stress In The Patient Undergoing Cardiac Surgery, Hulda Esther Serra, Patricia Jo Yvonne Tygret

Loma Linda University Electronic Theses, Dissertations & Projects

An important nursing objective is to assist patients through stressful experiences. It has been assumed that cardiac surgery constitutes such a stress situation. For this reason, twenty-two patients undergoing cardiac surgery at Loma Linda University Hospital studied for the purpose of exploring the degree and time-course of were psychological stress.

The methodology consisted of administration of psychological tests before and after surgery; determination of urine catecholamines (UCA) before, during and after surgery; administration of a coping assessment tool before surgery, and a recall interview on the fifth day after surgery. The Multiple Affect Adjective Check List (MAACL)-Today form, and the …

Effect Of Lateral Positioning On Central Venous Pressure, Romelda C. Jereos

Loma Linda University Electronic Theses, Dissertations & Projects

This experimental study was conducted to investigate the effects of lateral positioning on central venous pressure. It was hypothesized that lateral positioning would not significantly change the central venous pressure so long as the subjects were placed on the same horizontal plane for both supine and lateral measurements. It was also hypothesized that the length of time spent in the lateral position would not alter the pressure.

It is recognized that several factors do indeed play important roles in the maintenance of central venous pressure. The effect of one particular influencing factor, gravity, was central to this study. The difference …

The Duration Of The Effect Of Different Carbohydrates On Neutrophilic Phagocytosis, Judy L. Reeser

Loma Linda University Electronic Theses, Dissertations & Projects

In order to determine the duration of the effect of glucose, fructose, sucrose, honey, starch, and orange juice on neutrophilic phagocytosis, 10 subjects underwent a complete series of carbohydrate tolerance tests. Blood samples were drawn at specific time periods following ingestion of 100 grams of each carbohydrate. Blood was then analyzed for glucose and phagocytic index (the mean number of bacteria engulfed per leukocyte); a red blood cell and white blood cell count and differential white cell count were done also on about 1/2 of the samples. In addition, 7 other subjects participated in a fasting study in which no …

Cardioregulatory Role Of The Abdominal Ganglion Of Aplysia Californica, George Maeda

Loma Linda University Electronic Theses, Dissertations & Projects

An isolated heart-abdominal ganglion preparation of this mollusc was developed and used to study the cardioregulatory function of the ganglion and nerves. The heart was perfused with artificial sea water through an atrial cannula and the gastro-esophageal artery was catheterized for blood pressure monitoring. The presence and cardioregulatory effects of axons in the nerves was investigated by electrical stimulation. Fine-tipped glass microelectrodes inserted into ganglionic neurons were used to determine the relationship between the neuronal and cardiac activities.

The principal results are listed below.

1. Primarily inhibitory responses are obtained from both right and left connective stimulation, with some evidence for …

A Technique For The Experimental Production Of Dry Socket In The Cat And An Evaluation Of Numerous Potential Etiologic Factors, Thomas F. Scott

Loma Linda University Electronic Theses, Dissertations & Projects

Dental dry socket has been attributed to a variety of etiologic factors without basic science research. Before a systematic attempt could be undertaken to determine the initiator/s of dry socket, if such exists, an experimental technique had to be developed which could consistently produce dry socket. A dental extraction socket infusion technique was developed with the cat that enabled the investigator to study some of the initiating factors which have been previously suggested as possible etiologic causes for the production of dry socket.

From the present study such factors as trauma, age, sex, site and number of extractions, lack of …

The Relationship Of The Bucco-Lingual Position Of The Mandibular First Molar To Occlusion And Arch Stability, Lothar M. Guttschuss

Loma Linda University Electronic Theses, Dissertations & Projects

Forty non-treated and twenty-two orthodontically treated cases were selected to determine the relationship of the bucco-lingual position of the mandibular first molar to occlusion and arch stability.

Plaster models and occlusal radiographs were obtained from all the cases. Anterior crowding, intermolar width, molar classification, and molar overhang relative to the basal bone were determined. The modified technique for occlusal radiographs used was found to result in radiographs which were more versatile and accurate when interchanged with the model measurements. Clinical applications of this technique include the determination of root angulations, location of impactions, and the fabrication of individualized preformed arch …

The Effects Of A Topically Applied Anti-Inflammatory Agent On Root Resorption In The Replanted Teeth Of Canines, William L. Young

Loma Linda University Electronic Theses, Dissertations & Projects

Root resorption is a constant finding on the roots of replanted teeth. In this study it was suggested that root resorption is perhaps related to inflammation and that teeth incubated in an anti-inflammatory agent such as triamcinolone acetonide, a corticosteroid, before replantation would have less resorption. To investigate this hypothesis nineteen mature teeth in five mongrel dogs were extracted and replanted. Ten of the teeth were incubated for five minutes in the steroid and nine control teeth for the same period in a saline solution. Before euthanizing the animals at one, three, five, and seven weeks, a clinical evaluation of …

An Anesthetic Technique Utilizing Innovar, Fentanyl, And Methohexital Sodium For Outpatient Oral Surgery, Fredric D. Haerich

Loma Linda University Electronic Theses, Dissertations & Projects

A study of 800 patients ranging in age from seven to one hundred years was conducted in the development of an anesthetic technique which combines the desirable qualities of a neuroleptic agent with the requirements of an outpatient oral surgical anesthetic. These requirements included rapidity of onset, effectiveness of action, ease of controlling duration, and rapid postoperative recovery.

Patients who were cleared medically for outpatient procedures were given Innovar 1.5 cc/150 lb of body weight, atropine 0.4 mg, and fentanyl 1.0 cc/150 lb of body weight as an initial dose within 30-45 seconds in a D5W drip by means of …

The Effect Of Elevated Glucose On Neutrophilic Phagocytosis In Genetically Diabetic Mice, Larry B. Thompson

Loma Linda University Electronic Theses, Dissertations & Projects

Infiltration to an injury site or area of bacterial contamination by polymorphonuclear leucocytes (or neutrophils) is an early and essential phase of the early inflammatory reaction. Their action on foreign matter is the most critical step taken by body defense mechanisms in the first 24 hours. Anything which interferes with that action, phagocytosis, greatly hampers early inflammation. This study was designed to see the effect of elevated glucose levels on neutrophil phagocytosis in a unique strain of genetically diabetic mice.

Twenty-two diabetic and twenty-four control female mice were used. Blood glucose determinations and total white counts were made on each …

The Response Of Gingival Tissues To Alterations In Ph, Robert C. Jann

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of this study was to evaluate the histopathological and clinical changes that occurred when a continuous supply of exogenous acid or base, at varying pH, was delivered adjacent to the gingival crest of the monkey. A related goal was to develop a monkey model system which would deliver test solutions continuously and atraumatically, to the experimental gingival sites.

Two young adult female monkeys had a perfusion apparatus attached to certain maxillary teeth so that test solutions were deposited atraumatically to the marginal gingival tissues. During the experimental periods the animals were kept in primate restraining chairs and fed …

Bacteriuria As A Precursor Of Intracatheter Encrustation, Namcy Moll

Loma Linda University Electronic Theses, Dissertations & Projects

The problem with which this study was concerned was the development of criteria that could be used to determine when urinary catheter changes were necessary. By determining when encrustation occurred, it was felt that some complications could be eliminated by changing catheters before obstruction occurred due to encrustation.

It was the purpose of this study to: 1) explore some indications for catheter change, 2) determine if encrustation of urinary catheters necessitates catheter change, and 3) estimate potential criteria for a routine time for catheter changes.

Forty-five catheters were examined after their removal from patients. Flow rates were determined on 33 …

The Effect Of Early Postpartum Teaching Of Infant Feeding On Maternal Concern, Linda M. Richter, K. Judy Toews

Loma Linda University Electronic Theses, Dissertations & Projects

An experimental study was conducted on thirty primiparae during the postpartum period to determine if individualized instruction regarding infant feeding would result in a lower level of maternal concern in this area. The study sample was randomly and evenly divided into a control and an experimental group. It was statistically determined that the two groups were homogeneous in regard to age, education, occupation, previous information (prenatal classes and reading) and help at home. The experimental group received individualized instruction by the researchers concerning their chosen method of infant feeding on the second postpartum day. There was no instruction given the …

Using A Participating Relationship To Improve Teen-Age Unwed Mother's Self-Esteem, Linda Gail Reeves

Loma Linda University Electronic Theses, Dissertations & Projects

The study was to provide an approach to help teen-age unwed mothers increase their feelings of self-esteem and thereby attain a conceptual buffer for better coping with life. Self-esteem was defined as individual perception of the worth of oneself relative to that of significant others. The hypothesis tested was that the participating relationship a community health nurse has with a teen-age unwed mother will significantly increase the mother's self-esteem as measured by statistical Q-Sort analysis.

A convenience sample of twenty teen-age unwed mothers was obtained from referrals from San Bernardino County Health, Welfare, and Probation Departments. The girls were between …

A Computerized Study Of Midpalatal Suture Expansion, Clelan G. Ehrler

Loma Linda University Electronic Theses, Dissertations & Projects

An investigation has been conducted to consider the effects of midpalatal suture expansion on the cranial-facial complex. Nine patients were treated that had constricted maxillae. Data was obtained from frontal and lateral headplate radiographs which were taken at four intervals during treatment. The Rocky Mountain Data Systems diagnosis was utilized to interpret the radiographic data.

The data from the nine cases were averaged to obtain a composit [sic] change at each of the four times.

Examination of the lateral headplate data revealed that no permanent significant alteration occurred to the positions of the mandible or maxilla in a vertical or …

A Clinical And Microscopic Evaluation Of Plaque Removal And By The Hydrodent Brush, Soertini E. Lambri

Loma Linda University Electronic Theses, Dissertations & Projects

The Hydrodent toothbrush was compared to conventional toothbrush (Lactona # 19) in its effectiveness on removing the plaque, eliminating the pocket depth, and improving the gingival tissue condition.

Forty six male and female subjects with the age range of 18 to 50 years old participated in a 5 month study with 4 week intervals. Each subject received a Hydrodent brush of soft, medium, and hard textures and a conventional toothbrush. The toothbrushes were given randomly and the subject served as his own control.

Clinical and histological evaluations were made after the use of each toothbrush. The clinical evaluation showed some …

A Comparison Of The Articular Eminence To Various Skeletal And Dental Malocclusions, James R. Wise

Loma Linda University Electronic Theses, Dissertations & Projects

The slope of the articular eminence was measured on the cephalograms of 71 subjects. The patients were divided Into three major categories on the basis of skeletal pattern, dental bite type, and Angle's classification. Skeletal pattern was determined by the mandibular plane angle (SNGoGn). High Angle and Low Angle cases were classified by two standard deviations from normal. Dental bite types were divided into Open Dental or Closed Dental according to the absence or presence of anterior disclusion, respectively. Angle's method of classification was also used to divide the sample Into Class I, II, or III malocclusions.

The eminence slope …

A Serial Cephalometric Evaluation Of The Mandibular Radius, W. Thomas Veal Jr.

Loma Linda University Electronic Theses, Dissertations & Projects

This study compared the mandibular radius (center of the condyle to gnathion) with the mandibular planes (lower border and GoGn) utilizing serial lateral cephalograms on orthodontically treated and nontreated individuals. Three groups were employed as follows: Group 1 of 38 untreated individuals for serial data on growth alone; Group 2 of 13 patients with Class II, high angle, open bite malocclusions that had been treated with high pull headgear and the edgewise appliance (control representing the least amount of mandibular rotation during orthodontic treatment); and Group 3 of 54 randomly selected orthodontic patients to represent the average mandibular rotation during …

A Comparison Of Various Teaching Methods For Patients With Chronic Obstructive Pulmonary Diseases, B. Carol Altizer, Nancy S. Bailey

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of this study was to find out whether patients with chronic obstructive pulmonary disease (C.O.P.D.) learn more from auditory or from visual teaching. Of the 30 patients in the sample, 10 used a programmed instruction booklet, 10 used a taped recording of the same programmed material and 10 were in a control group which received no specific teaching.

A pre-test was given to each of the patients who met the criteria for the study. One researcher gave the pre-test through an oral interview with the patient. After the pre-test, the patient received the teaching device assigned to him …

Histopathological Variations Of Periapical Granulomas And Radicular Cysts, Thanapen Kanchanasut

Loma Linda University Electronic Theses, Dissertations & Projects

The periapical dental granuloma and cyst is the most frequent sequela of pulpitis. These lesions are always intraosseous and often become quiescent after the acute phases are over, forming a space which primarily consists of chronic inflammatory tissue. This chronic inflammatory tissue usually appears as a one-centimeter area of punched out bone on the x-ray film and is referred to as a dental granuloma. Should epithelium choose to proliferate in this inflammatory area, it may undergo subsequent cystic degeneration forming the typical periapical cyst. While much has been written with regard to the etiology and treatment of the apical cyst …

Change In The Number Of Fibers And Nuclei In The Rat Soleus Muscle During Normal Development And Increased Work Load Exercise, John K. Pearson

Loma Linda University Electronic Theses, Dissertations & Projects

Many orthodontists have desired to produce a permanent lengthening of a short upper lip. To produce a permanent increase in skeletal muscle mass, changes associated with hyperplasia would probably have to occur. If it would be possible to demonstrate in animals that skeletal muscle cells and corresponding deoxyribonucleic acid (DNA) increased with exercise, clinical studies on the upper lip would be in order.

Male Sprague Dawley albino rats were used to study the effects of exercise and normal development. Increased work load exercise of the soleus muscle was induced by cutting the tendon of the synergestic gastrocnemius. Histological sections of …

Relationship Of Ventilation Ability And Positioning In Left-Sided Congestive Heart Failure Patients, Nancy E. Carson

Loma Linda University Electronic Theses, Dissertations & Projects

Proper positioning is used to relieve dyspnea, edema, and fatigue in congestive heart failure patients. According to the review of literature, improved ventilation as measured by specific lung volumes and lung mechanics occurred with upright positioning in normal persons. The effects of specific changes in lung volumes related to position change in congestive heart failure patients has not been documented in literature, although various recommendations related to positioning are made. This exploratory study was undertaken with nine congestive heart failure patients to see if a relationship existed between degree of head elevation and lung ventilation ability as measured by water-bell …

Effects Of A Series Of Nurse-Patient Interactions On Multiple Sclerosis Patients, Lynne Campbell

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of the study was to learn whether a series of nurse-patient interactions would result in changed psychophysiologic functioning in multiple sclerosis patients.

Psychophysiologic relationships were described in the theoretical framework. Literature, reviewed in the areas of disease description and psychotherapeutic approaches to treatment, indicated that there is a high incidence of multiple sclerosis in the United States; that symptoms often include psychological alterations; that there is an emotional component to the illness; that these patients have a need for a psychotherapeutic relationship; and that psychotherapeutic approaches may have beneficial psychophysiologic effects.

Two groups of multiple sclerosis subjects were …

Influence Of Hospital Communication On Health Supervision Of High-Risk Infants, Alda L. Forte

Loma Linda University Electronic Theses, Dissertations & Projects

The study was conducted to explore the extent to which communication about high-risk infants identified prior to hospital discharge, influences the public health nursing supervision to these infants during the neonatal period. A high-risk infant was defined as one that stands a greater than average chance of developing neonatal, life threatening disease or sequellae (physical, intellectual, or social handicap) due usually to maternal health or social factors, infant factors such as length of gestation, birth trauma, or complications at birth. The hypothesis tested was that when high-risk infants are identified prior to hospital discharge and this information communicated on the …

Depression And Uncooperativeness In Public Health Patients, P. Sherrill Baugher, Nancy Lynn Swan

Loma Linda University Electronic Theses, Dissertations & Projects

The purpose of this study was to determine whether uncooperative behavior and a quantitative measurement of depression exist in the same patient in a public health nurse's caseload. Seven full-time public health nurses were randomly selected from the San Bernardino Public Health Department staff. They reviewed their caseloads and selected all the patients who met the general criteria.

Patients were then classified as cooperative or uncooperative based on the following specific criteria: (1) gives unreliable information, (2) uses the nurse as a "buffer" between helping agencies, (3) demands immediate gratification of requests in a stressful situation, (4) makes only token …

Cold For Relief Of Postoperative Limitation Of Activity Due To Incisional Pain, Haroldine Roberts

Loma Linda University Electronic Theses, Dissertations & Projects

This study was concerned with testing the effectiveness of cold to aid the cholecystectomy patient in performing certain selected activities usually inhibited by incisional pain.

Available references of the effects of cold on the abdominal area were studied to formulate a method of approach as no previous methodology was found in the literature.

The experimental method of research was used on a sample of 18 cholecystectomy patients meeting the criteria for the study, independent variable for the 10 patients in the experimental the application of cold over the closed incision, plastic bag covered with one thickness of towel was used …

Activity Analysis Of Personnel On Patient Trayline Assembly, June Bishop

Loma Linda University Electronic Theses, Dissertations & Projects

The systems approach in food service administration is the initial step in analyzing current procedures to determine the effectiveness of resource utilization. Analysis begins with observation of a system to provide possible explanations of the system behavior.

The purpose of this research was to determine through work sampling the proportion of both productive and nonproductive labor time of operators on the tray assembly, the labor time and labor cost required in each position and for each meal, and to test the hypothesis that there was no significant difference between the productivity index (trays per minute) during Phase A and Phase …

Sensory Stimulation To Influence Body Awareness In The Adult Hemiplegic Patient, Sue Carol Bradley

Loma Linda University Electronic Theses, Dissertations & Projects

An experimental study was conducted in four convalescent facilities using fourteen CVA patients with body scheme disturbances. The study was done to test the hypothesis that the experimental technique of light touch sensory stimulation as supplied by fast brushing to the skin dermatomes C 5, 6, 7, and 8 of the affected arms would increase the scores of the subjects in the experimental group.

Patients were assigned via a random process to the experimental or control groups if, upon taking the MacDonald Test of Body Scheme, they obtained a score of 39 or below. Subjects in the experimental group received …