The development of physical diagnosis: Historical perspectives

@#The history of physical diagnosis started with Hippocrates and his school. History taking, inspection, palpation, and sometimes immediate auscultation and examination of the urine are fundamental diagnostic tools. The Hippocratic Corpus and Galen’s authoritative theoretical writings dominate medical thinking for over 1000 years. Clinical examination advances through Vesalius and Morgagni’s discoveries of human dissection (1543) and pathologic anatomy (1761) respectively. The Vienna school through Auenbrugger introduces percussion in 1760. The Paris school formally establishes physical diagnosis with the invention of the stethoscope by Laennec in 1816.

Safety, tolerability and efficacy of LEGA-Kid® mechanical percussion device versus conventional chest physiotherapy in children: a randomised, single-blind controlled study

INTRODUCTION@#Chest physiotherapy (CPT) may benefit children aged below five years who suffer from lower respiratory tract infection (LRTI). However, its effects depend on the technique used. This study aimed to determine whether mechanical CPT using the LEGA-Kid® mechanical percussion device is superior to manual CPT in children with LRTI.@*METHODS@#Children aged five months to five years who were admitted and referred for CPT from January to April 2017 were randomised to either manual CPT or mechanical CPT with LEGA-Kid. Outcomes measured before intervention and two hours after intervention were respiratory rate (RR), oxygen saturation and modified Respiratory Distress Assessment Instrument (mRDAI) score.@*RESULTS@#All 30 enrolled patients showed significant reduction in post-intervention RR and mRDAI scores. There was an 8% reduction in RR for the manual CPT group (p = 0.002) and a 16.5% reduction in the mechanical CPT group (p = 0.0001), with a significantly greater reduction in the latter (p = 0.024). mRDAI scores decreased by 2.96 in the manual group (p = 0.0001) and 3.62 in the mechanical group (p = 0.002), with no significant difference between the groups. There was no significant improvement in oxygen saturation, and no adverse events were observed after CPT.@*CONCLUSION@#Children receiving both manual and mechanical CPT showed improvements in respiratory distress symptoms, with no adverse effects. A combined strategy of nebulised hypertonic saline followed by CPT for LRTI removes airway secretions and results in improvements in moderately severe respiratory distress. The LEGA-Kid mechanical CPT method is superior to manual CPT in reducing the RR.

Spontaneous pneumothorax in two dogs undergoing combined laparoscopic ovariectomy and total laparoscopic gastropexy

Two dogs underwent a combined laparoscopic ovariectomy and total laparoscopic gastropexy. The intra-abdominal pressure and pulmonary compliance decreased, but the peak airway pressure increased at 20 min after the start of gastropexy with intracorporeal suturing. Right chest auscultation and percussion revealed reduced breath sounds and hyper-resonance. No abnormalities in the functioning of the instruments or diaphragmatic defects were detected. The tidal volume was reduced and a positive end-expiratory pressure of 5 cmH₂O was applied. The right chest of the two dogs was drained off: 950 mL (case 1) and 250 mL (case 2) of gas. After thoracentesis, the pulmonary compliance improved and surgery was completed successfully. The postoperative chest radiographs highlighted the residual right pneumothorax.

The Effects of Chest Physiotherapy on Applied to Patients Mechanicalventilated: In Patients with Acute Lung Injury / 중환자간호학회지

PURPOSE: The purpose of this study was to examine the effects of two single chest physiotherapies mechanically ventilated patients with acute lung injury.METHOD: Participants were 30 ICU patients depending entirely on ventilators without self-respiration. Each patients received two single chest physiotherapiesvibration palm cup percussion at hour intervals. Data were analyzed one-way ANOVA and Wilcoxon signed-rank test. Statistical significance was accepted at a p value less than .05.RESULTS: ibration therapy, dynamic compliance and statics compliance demonstrated a significant increase immediately and remained increased until 30 minutes after chest physiotherapy. palm cum percussion therapy saturation showed a significant increase immediately chest physiotherapyut there were no significant differences in tidal volume, dynamic compliance and statics compliance.CONCLUSION: In this study, we analyzed the effects of oscillation method and palm cup percussion method separately for each type of chest physiotherapy. Nursing interventions that actively utilize vibration methods should be provided to patients with respiratory diseases.

Differences in percussion-type measurements of implant stability according to height of healing abutments and measurement angle / 대한치과보철학회지

PURPOSE: The purpose of this study was to evaluate the effect of healing abutment height and measurement angle on implant stability when using Periotest and AnyCheck. MATERIALS AND METHODS: 60 implants were placed into artificial bone blocks. After implant insertion, 2, 3, 4 and 5 mm healing abutments were installed on 15 specimens, respectively. Insertion torque value, implant stability test, Periotest value were measured. Insertion torque value was controlled between 45 – 55 Ncm. AnyCheck was used for measuring implant stability test and Periotest M was used for measuring Periotest value. Implant stability test and Periotest value were measured at the angles of 0 and 30 degrees to the horizontal plane. Measured values were analyzed statistically. RESULTS: Insertion torque value had no significant difference among groups. When healing abutment height was higher, implant stability test and Periotest value showed lower stability. Also when measurement angle was decreased, implant stability test and Periotest value showed lower stability. CONCLUSION: When measuring stability of implants with percussion type devices, measured values should be evaluated considering height of healing abutments and measurement angle.

A Patient with Myotonic Dystrophy Type 1 Presenting as Parkinsonism

The current body of literature contains 5 reports of myotonic dystrophy (DM) with parkinsonism: 4 reports of DM type 2 and 1 report of clinically suspected DM type 1. To date, there have been no genetically proven cases of DM type 1 with parkinsonism. Here, we report the first case of genetically proven DM type 1 and parkinsonism that developed ahead of muscle symptoms with bilateral putaminal, presynaptic dopaminergic deficits on imaging. A 54-year-old female patient presented with bradykinesia, axial and bilateral limb rigidity, stooped posture, and hypomimia, which did not respond to levodopa. At age 56, she developed neck flexion weakness. Examination showed bilateral facial weakness, percussion and grip myotonia, and electromyography confirmed myotonic discharges. A genetic study of DM type 1 showed a DMPK mutation. At age 58, gait freezing, postural instability, and frequent falling developed and did not respond to increasing doses of levodopa. At age 59, the patient died from asphyxia.

Percusión, ritmo y movimiento: facilitadores del proceso de rehabilitación del paciente laringectomizado / Percussion, rhythm and movement: Facilitators of the laringectomized patient rehabilitation process

Introducción: la voz humana en sus variadas manifestaciones, como el habla, el canto y otras producciones sonoras, es una forma de canalizar y expresar nuestras emociones, ideas, pensamientos y de vincularnos con los demás. El paciente laringectomizado total se ve privado de su voz natural. En su proceso de rehabilitación deberá aprender habilidades de comunicación funcional que le permitan desarrollar una buena calidad de vida. Material y método: 4 talleres con frecuencia trimestral, en el transcurso de un año. Participaron 21 pacientes laringectomizados, con edad promedio de 62 años. Actividades propuestas: Ejercicios de relajación activa y alineación postural, automasajes cervicofaciales y ejercitación de respiración costo-diafragmática. Percusión corporal e instrumental con variaciones rítmicas asociadas al movimiento. Ejercicios de asociación de cualidades sonoras vinculadas a la producción oral y cantada. En cada taller se administró un cuestionario escrito. Resultados: Mediante la ejercitación respiratoria se logró un mejor dominio del soplo aéreo pulmonar evitando sonidos silbantes durante la espiración. Las actividades rítmicas favorecieron el reconocimiento, la reproducción y la sincronización de movimientos corporales. Las actividades de percusión asociadas a la emisión de la palabra permitieron que el patrón rítmico acompañe a la producción de las mismas. El 100% de los pacientes manifestaron disfrute por la actividad propuesta. Entre los beneficios obtenidos mencionaron: mejoramiento del humor, sensación de bienestar corporal, mejoras en la comunicación. Conclusiones: La implementación de técnicas de relajación, alineación postural y respiración junto a actividades asociadas al ritmo y al movimiento contribuyen notoriamente a la calidad de vida de estos pacientes.

Introduction: the human voice in its varied manifestations, such as speech, singing and other sound productions are a way of channeling and expressing our emotions, ideas, thoughts and to bond with others. The total laryngectomized patient is deprived of his natural voice. In your rehabilitation process you must learn functional communication skills that allow you to develop a good quality of life. Material and method: 4 workshops with quarterly frequency, in the course of one year. 21 laryngectomized patients participated, with a mean age of 62 years. Proposed activities: Exercises of active relaxation and postural alignment, cervicofacial self-masagges and cost-diaphragmatic breathing exercises. Body and instrumental percussion with rhythmic variations associated with movement. Association exercises of sound qualities linked to the production of syllables, words, phrases, rhymes and popular songs. In each workshop, a written questionnaire was administered to respond anonymously. Results: By means of the respiratory exercises, a better control of the aerial lung breath was obtained avoiding hissing sounds during the expiration. The rhythmic activities favored the recognition, reproduction and synchronization of body movements. The percussion activities associated with the emission of the word allowed the rhythmic pattern to accompany the production of the same. 100% of patients expressed their enjoyment of the proposed activity. Among the benefits obtained mentioned: improvement of the mood, sensation of corporal well-being, improvements in the communication. Conclusions: the implementation of relaxation techniques, postural alignment and breathing along with activities associated with rhythm and movement contribute to the quality of life of these patients.

Retreatment of failed regenerative endodontic of orthodontically treated immature permanent maxillary central incisor: a case report

A revascularization procedure was shown to be the best alternative therapy for immature teeth with necrotic pulp and apical infection. A 12 year old female with a history of trauma to her upper central incisor and a sinus tract was referred for endodontic treatment. She was an active orthodontic patient and had undergone regenerative endodontic treatment for the past 2 years. Clinical examination revealed no response to sensibility, percussion, and palpation tests. The preoperative radiograph showed an open apex and apical rarefaction. The case was diagnosed as previously treated tooth with asymptomatic apical periodontitis. Regenerative endodontic retreatment was performed, and the case was followed for 3 years. Clinical, radiographic, and cone-beam computed tomography follow-up examination revealed an asymptomatic tooth, with evidence of periapical healing and root maturation.

Occlusal reduction reduces postoperative pain after endodontic instrumentation

Pain management after root canal treatment is a very important issue in clinical practice. The purpose of this study was to evaluate the effect of occlusal reduction on postoperative pain in teeth with irreversible pulpitis and tenderness to percussion. This was a prospective, randomized study conducted in Operative Department of dental section of Bahria Dental College and Hospital from June 2013 to May 2014. One hundred and ten posterior teeth with no or mild preoperative pain, sensitive to percussion requiring endodontic treatment were included in this study. After administration of local anesthesia, the root canals were instrumented, and an intracanal calcium hydroxide dressing was placed. The patients were randomly divided into 2 groups of 55 each. In 1 group the occlusal surface was reduced [OR group], whereas in the other group the occlusal surface was not modified [no occlusal reduction, NOR group]. The patients were recalled after 24 hour, 2nd day and 3rd day to record their postoperative pain on the visual analogue scale. Data was analyzed by using Chi-square test. There was no significant difference in postoperative pain between the 2 groups [P > .05] after root canal preparation and calcium hydroxide dressing. Occlusal surface reduction did not provide any further reduction in postoperative pain for teeth with irreversible pulpitis and mild tenderness to percussion compared with no occlusal reduction

Establishing the normal sonographic measurements of the liver, spleen and portal vein among Filipino adults

Normal values and upper limits (95th percentile and 95% confidence interval of liver, spleen and portal vein size, as well as liver extensions below the costal margin were determined prospectively with ultrasound in 224 healthy subjects (renal donors). Correlation with sex, age, weight, height, and body surface area were assessed. Some correlation values were significant (r ? 0.30). The highest correlation (r=0.65 was liver AP diameter with weight. A formula to predict normal liver AP diameter was derived. Another set of subjects with established liver disease was compared with the normal means. All abnormal diameter means were at or above the 95th percentile, and the difference between the means of the normal and abnormal diameters were significant.

Foreign Body Removal at Right Main Bronchus in A Neonate / 대한구급학회지

Foreign body in the airway could be a life-threatening risk, especially for young pediatric patients. A 6-day old male patient with foreign body, which was located deep in the right main bronchus was being admitted. Although we tried three times to remove it with rigid bronchoscopic forceps under the general anesthesia, we failed. Before switching to surgical treatment, we changed the Trendelenburg position and tapped his back several times in order to alter the foreign body toward the forcep. Finally we were able to catch and extract the foreign body successfully. We suggest that back percussion with the Trendelenburg position is a useful solution to remove a foreign body within a deep airway.

Prognosis and evaluation of tooth damage caused by implant fixtures

Damage to adjacent teeth is one of the various complications that may occur during implant placement and is often the result of improper direction during fixture placement or excessive depth of placement. In general, if detrimental symptoms, such as reaction to percussion in damaged teeth, mobility, and pulp necrosis, are not present, osseointegration should be observed at follow-up. In three cases, the possibility of root damage due to an implant fixture placed too close to each adjacent tooth was perceived on radiographs. However, in all of these cases, there were no clinical symptoms or radiographic changes present in the tooth, and the implants did not exhibit decreased stability or peri-implantitis. Therefore, we can carefully predict that the implant fixture close to the adjacent tooth did not invade the cementum of the root, and therefore did not produce the suspected pulpal damage or periradicular symptoms. In this study, we considered both the implant status as well as the adjacent tooth.

Physical Examination of Arthritis / 대한내과학회지

The goal of physical examination is to establish the diagnosis and to evaluate status of the disease after treatment. Physical examination of arthritis also is the most important skill with history taking for the diagnosis and evaluation in patients with rheumatic diseases. In general physical examination is composed of inspection, auscultation, percussion, and palpation, but in patients with arthritis it means mainly inspection and palpation. Inspection consists of visual examination including gait, the shape of the joints, deformities, symmetries, swelling, erythema, atrophy of muscle, ability to move the joint, and skin change over the affected joint as well as other areas. Palpation is to feel warmth, tenderness, and swelling, to touch the margin of each joint, and to confirm range of motion. To establish the anatomical source of pain requires differentiating between articular versus extra-articular source. An expertise in physical examination requires knowledge in anatomy, skill, and special test and physicians have to become familiar with physical examination through repeated training from patients with similar musculoskeletal problems.

Diagnostic and clinical factors associated with pulpal and periapical pain

A retrospective survey was designed to identify diagnostic subgroups and clinical factors associated with odontogenic pain and discomfort in dental urgency patients. A consecutive sample of 1,765 patients seeking treatment for dental pain at the Urgency Service of the Dental School of the Federal University of Goiás, Brazil, was selected. Inclusion criteria were pulpal or periapical pain that occurred before dental treatment (minimum 6 months after the last dental appointment), and the exclusion criteria were teeth with odontogenic developmental anomalies and missing information or incomplete records. Clinical and radiographic examinations were performed to assess clinical presentation of pain complaints including origin, duration, frequency and location of pain, palpation, percussion and vitality tests, radiographic features, endodontic diagnosis and characteristics of teeth. Chi-square test and multiple logistic regression were used to analyze association between pulpal and periapical pain and independent variables. The most frequent endodontic diagnosis of pulpal pain were symptomatic pulpitis (28.3 percent) and hyperreactive pulpalgia (14.4 percent), and the most frequent periapical pain was symptomatic apical periodontitis of infectious origin (26.4 percent). Regression analysis revealed that closed pulp chamber and caries were highly associated with pulpal pain and, conversely, open pulp chamber was associated with periapical pain (p<0.001). Endodontic diagnosis and local factors associated with pulpal and periapical pain suggest that the important clinical factor of pulpal pain was closed pulp chamber and caries, and of periapical pain was open pulp chamber.

Um estudo retrospectivo foi realizado para identificar fatores clínicos e de diagnóstico associado com a dor de origem odontogênica. Foram selecionados 1765 pacientes que buscaram tratamento para dor odontogênica no Serviço de Urgência da Faculdade de Odontologia da Universidade Federal de Goiás. Os critérios de inclusão foram dor de origem pulpar ou periapical antes do tratamento dentário (mínimo de 6 meses depois da última consulta odontológica), e os critérios de exclusão foram dentes com anomalias de desenvolvimento e falta de informações ou registros incompletos. Avaliações clínicas e radiográficas foram realizadas para se obter as características clínicas de dor, incluindo origem, duração, frequência e localização da dor, testes de palpação, percussão e vitalidade pulpar, aspectos radiográficos, diagnóstico endodôntico e características dos dentes. Os testes qui-quadrado e regressão logística múltipla foram utilizados para verificar a associação entre a dor de origem pulpar e periapical e variáveis independentes. O diagnóstico endodôntico de dor de origem pulpar mais frequente foi pulpite sintomática (28,3 por cento) seguido por pulpalgia hiper-reativa (14,4 por cento), e o mais frequente de dor de origem periapical foi periodontite apical sintomática infecciosa (26,4 por cento). Análise de regressão revelou que câmaras pulpares fechadas e cáries estavam altamente associadas à dor pulpar e, inversamente, câmara pulpar aberta estava associada à dor periapical (p<0,001). O diagnóstico endodôntico e fatores locais associados com dor de origem pulpar e periapical sugerem que os fatores clínicos importantes das dores pulpares foram câmaras pulpares fechadas e cáries, e de dor periapical foi câmara pulpar aberta.

Magnetic Resonance Spectroscopy Findings According to the Route of Injecting Stem Cells in Experimental Traumatic Brain Injured Rats

OBJECTIVE: To identify the effective injection route for adult human bone marrow stromal cells into traumatic brain injured rats. METHOD: The TBI rats were created by the lateral percussion model (HD1700, Dragonfly, Silver Spring, USA). Eight rats without stem cell transplantation were assigned to a control group. We performed adult human bone marrow stromal cell transplantation into the contralateral hemisphere (n=7), the ipsilateral brain lesion (n=8) and via a tail vein (n=11), respectively, at 24 hours after brain injury. For all of the groups, MRS (magnetic resonance spectroscopy) study, behavior tests, rotarod tests and Barnes maze tests were conducted on day 1, day 7, day 42 and day 84. Sixteen rats were randomly assigned and were sacrificed for immunohistochemical staining. RESULTS: At day 42 (p=0.048) and day 84 (p=0.031) after TBI, the ratio of N-acetylaspartate to creatine (NAA/Cr) of the ipsilateral hemisphere was decreased in the control group, as assessed by MRS, whereas the ratio was increased in the other groups. On the post hoc analysis, significant differences were obtained among the intravenous group and the control group for the NAA/Cr ratio of the ipsilateral hemisphere at day 84 after TBI (p=0.050). However, there was no significant improvement on the behavior test, the rotarod test and the Barnes maze test. The cells were positively stained with antibodies to MAB-1281 and to GFAP. CONCLUSION: We confirmed that adult human bone marrow stromal cell transplantation induced an increase of the NAA/Cr ratio of the ipsilateral hemisphere at day 84 in the intravenous group. Therefore, we suggest the intravenous route is more effective for mesenchymal stem cell transplantation.

A 5-year retrospective clinical study of the Dentium implants

PURPOSE: The aim of this retrospective study was to evaluate cumulative survival rate (CSR) of Implantium implants followed for 5 years and association between risk factors and the CSR. MATERIALS AND METHODS: A total of two hundred forty-nine Implantium Implants System (Dentium, Seoul, Korea) placed in ninety-five patients from 2004 to 2009 were investigated with several identified risk factors (sex, systemic disease, smoking, alchohol, reason of tooth loss, length, arch (maxilla or mandible), replace tooth type (incisor, canine, premolar or molar) Kennedy classification, prosthodontic type, prosthodontic design, opposite dentition, abutment type, occlusal material, occlusal unit, splint to tooth, cantilever, other surgery). Clinical examination (mobility, percussion, screw loosening, discomfort, etc.) and radiographic examination data were collected from patient records including all problems during follow-up period according to protocols described earlier. Life table analysis was undertaken to examine the CSR. Cox regression method was conducted to assess the association between potential risk factors and overall CSR. RESULTS: Five of 249 implants were failed. Four of these were lost before loading. The 5-year implant cumulative survival rate was 97.37%. Cox regression analysis demonstrated a significant predictive association between overall CSR and systemic disease, smoking, reason of tooth loss, arch, Kennedy classification and prosthodontic design (P<.05). The screw related complication was rare. Two abutment screw fractures were found. Another complications of prosthetic components were porcelain fracture, resin facing fracture and denture fracture (n=19). CONCLUSION: The 5-year CSR of Implantium implants was 97.37%. Implant survival may be dependent upon systemic disease, smoking reason of tooth loss, arch, Kennedy classification and prosthodontic design (P<.05). The presence of systemic diseases and combination of other surgical procedures may be associated with increased implant failure.

Animal Models of Traumatic Brain Injury

Traumatic brain injury could be used to describe all injuries to the brain caused by external mechanical forces. It shows a variety of clinical manifestations from mild to severe forms and can result to death. Moderate to severe injuries can produce disabilities on physical, cognitive, behavioral, and emotional aspects. Animal models of traumatic brain injury have been developed to reproduce characteristics of human brain injury, to understand molecular and cellular pathophysiology and neurobehavioral outcomes following trauma and to find out the promising pharmacological drugs or rehabilitative skills to treat. This article reviewed the current experimental traumatic brain injury models, including weight drop, fluid percussion, and controlled cortical impact, and also the neurobehavioral assessments that are most commonly used to measure loss of function.

Matrix metalloproteinase-8 and substance P levels in root canal exudates of nonvital teeth / 대한치과보존학회지

OBJECTIVES: The aim of this study was to investigate levels of matrix metalloproteinase-8 (MMP-8) and substance P (SP) in root canal exudates during root canal treatment (RCT) of nonvital, painful teeth. MATERIALS AND METHODS: Patients scheduled for nonsurgical RCT were prospectively selected; the study was performed after obtaining informed consent from the patients and was approved by the Institutional Review Board for Clinical Research of Gangnam Severance Hospital, Yonsei University (3-2008-0118). Canal exudates samples were collected using sterilized paper points from teeth scheduled for RCT across three different time periods. MMP-8 and SP levels were measured using enzyme-linked immunosorbent assay (ELISA). Data were analyzed using a mixed model analysis and the Pearson correlation analysis (p < 0.05). RESULTS: MMP-8 and SP levels in GCF were decreased during RCT (p < 0.0001), and they showed a weak positive correlation to each other (p < 0.05). Patients'subjective pain levels and the response from percussion test were significantly related to SP level. CONCLUSIONS: This study demonstrated that periradicular inflammation endodontic origin can elevate SP and MMP-8 levels in root canal exudates. Interestingly, SP level of canal exudates showed a possibility of being used as an indicator of pain due to periapical pathosis.

Modified resin-bonded fixed partial dentures utilizing tooth undercuts: a clinical case study / 대한치과보철학회지

PURPOSE: The object of this clinical study was to evaluate the short-term outcome of modified resin-bonded fixed partial dentures which utilizes the original tooth undercuts and different path of insertion of components. MATERIALS AND METHODS: 71 units of modified RBFPDs that were used in 21 patients at the Department of Prosthodontics, College of Dentistry, Yonsei University were evaluated. The follow-up period was up to 25 months, the mean being 7 months. Survival rate, mobility, percussion, probing depth, bleeding on probing, plaque index was recorded and radiographs were taken to monitor alveolar bone loss. RESULTS & CONCLUSION: Within the limits of this short term retrospective study, it was concluded that: 1. No mechanical failure such as debonding or fracture of the framework was found during the follow-up period. 2. The periodontal apparatus was stable and no clinical change was observed after prosthetic treatment. 3. No significant marginal bone loss was found in the radiographic evaluation.

Chest Physiotherapy on the Respiratory Mechanics and Elimination of Sputum in Paralyzed and Mechanically Ventilated Patients With Acute Lung Injury: A Pilot Study

PURPOSE: Chest physiotherapy (CPT) is commonly used for mechanically ventilated patients, but little is known about its physiological effects, particularly in patients with acute lung injury (ALI). The aim of the study was to determine the benefits and risks of delivering multimodal respiratory physiotherapy to mechanically ventilated patients with ALI receiving paralytic agents. METHODS: A repeated measure-experimental design using a counterbalancing method was employed. Fifteen patients received CPT (vibration, percussion, or palm-cup percussion) in addition to the routine CPT in a randomized order. Another 15 patients, contraindicated for the percussion technique, received routine CPT including manual hyperinflation and position change, and were observed as a comparative group. The effects of CPT were evaluated by measuring the volume of aspirated secretions and the dynamic lung compliance (Cd) over time. For the adverse effects, peripheral oxygen saturation (SpO2) was recorded. Cd and SpO2 were recorded at the baseline period, immediately after the physiotherapy treatment, and at 10, 20, 30 and 60 minutes posttreatment. RESULTS: The volume of collected secretions did not differ significantly when compared between the groups (p = .838). Cd increased significantly over time in the manual percussion (p = .042) and palm-cup percussion (p = .046) group, where Cd in the latter remained elevated twice longer than in the former. None of the CPT techniques exerted major detrimental effects on SpO2. CONCLUSIONS: We found that the palm-cup percussion technique was the most effective in increasing Cd without any accompanying detrimental effects on SpO2. However, additional CPT did not affect the volume of aspirated secretions.