RESUMEN
Backrest elevation for a patient with a sacral-coccygeal pressure ulcer is necessary in certain situations, particularly to enable the patient to take meals. Deep pressure ulcers with undermining formations affect patients and create challenges for caregivers. The procedure of backrest elevation potentially worsens the pre-existing sacral-coccygeal pressure ulcers with undermining formations. Here, we report a Case of the clinical care of a patient using a simple approach for backrest elevation that minimizes additional injury to the existing sacral pressure ulcer covered with granulation tissue. In this case, we performed the backrest elevation in the semi-lateral position. After the backrest elevation, the patient was repositioned to the supine position to take a meal. The supine position was allowed at any time except during backrest elevation. The pressure ulcer of the patient improved rapidly using the combined treatment of our positioning approach and appropriate topical ointments. This practical approach may be effective for some patients as it potentially decreases the effect of shear force. The rationale for this approach can be explained by the mechanism of the undermining formation outlined in our experimental study using a pressure ulcer model mounted to a phantom. Although we used this position for patients with sacral-coccygeal pressure ulcers, this simple approach may also be considered for other patients based on our proposed pathogenesis of undermining formations.
Asunto(s)
Posicionamiento del Paciente/normas , Úlcera por Presión/prevención & control , Presión/efectos adversos , Región Sacrococcígea/irrigación sanguínea , Posición Supina/fisiología , Humanos , Úlcera por Presión/fisiopatología , Región Sacrococcígea/fisiopatologíaRESUMEN
OBJECTIVE: Clinical ketosis is common during the dairy cows' transition period and is responsible for considerable economic loss. Early identification of cows with subclinical ketosis is the first step for maintaining the health and productivity of dairy cows. The goals of the study were two-fold: The first was to examine the usefulness of a mobile test device as a cow-side test; and the second was to compare BHB concentrations measured by the ketometer using capillary blood and blood collected from the coccygeal vessels with values determined by a reference method in the laboratory using jugular blood. MATERIAL AND METHODS: Blood samples were collected from a jugular vein or the coccygeal vessels in 81 dairy cows at 7 time points (14 and 7â days pre-partum and 7, 14, 21, 28, and 42â days post-partum) for kinetic enzymatic measurement of BHB concentration in the laboratory. Blood samples were concurrently collected from the coccygeal vessels or by pricking the vulvar lip at the transition of the skin to the mucosa (capillary blood) to determine BHB concentration using the WellionVetâ¯BELUAâ¯ketometer (MED TRUST GmbH, Marz, Austria). RESULTS: Initial errors in operating the ketometer were quickly eliminated with experience. BHB concentrations of jugular blood measured in the laboratory were 0.07â mmol/l lower than those measured in coccygeal blood. The mean BHB concentration measured in coccygeal and capillary blood using the WellionVet BELUA ketometer did not significantly differ but were 0.13 and 0.12â mmol/l respectively, lower than the mean jugular vein concentrations measured in the laboratory. CONCLUSION: The WellionVet BELUA ketometer is useful for determination of BHB concentration in cows provided that the manufacturer's specifications are followed. Capillary blood is best collected at the transition from the vulvar skin to its mucosa. The device generates rapid results that correlate well with BHB concentrations determined in the laboratory and with the results obtained from different blood collection sites. It is ideally suited for monitoring dairy cows for subclinical ketosis using capillary or coccygeal blood.
Asunto(s)
Ácido 3-Hidroxibutírico/sangre , Bovinos/sangre , Animales , Capilares , Enfermedades de los Bovinos/sangre , Enfermedades de los Bovinos/diagnóstico , Industria Lechera/métodos , Femenino , Venas Yugulares , Cetosis/sangre , Cetosis/diagnóstico , Cetosis/veterinaria , Región Sacrococcígea/irrigación sanguíneaRESUMEN
CASE SUMMARY: An 84-year-old male patient was complaining of constipation and rectal bleeding for 6 months. Colonoscopy and rigid sigmoidoscopy showed a posterior upper rectal mass (13 cm from anus). Histopathology confirmed moderately differentiated adenocarcinoma. A CT scan of the thorax, abdomen, and pelvis, as well as pelvic magnetic nuclear resonance imaging, revealed midrectal cancer cT3N0M0 with clear predicted circumferential margin. The patient underwent anterior resection with tumor-specific total mesorectal excision and end colostomy. During the posterior rectal dissection, dilated fragile varicose presacral veins were damaged, and severe bleeding was observed. Initial pelvic packing was ineffective, as well as bone wax and clips. Internal iliac arteries were ligated, and additional packing was finally successful and the bleeding stopped. The patient was resuscitated with a total blood loss of 4.2 L. The bleeding did not recur, and the packs were removed on postoperative day 2. The postoperative course was uneventful, and the patient was discharged on postoperative day 13 from the initial operation and postoperative day 5 from packing removal.
Asunto(s)
Adenocarcinoma/cirugía , Hemorragia/etiología , Neoplasias del Recto/patología , Várices/complicaciones , Anciano de 80 o más Años , Pérdida de Sangre Quirúrgica/estadística & datos numéricos , Colostomía/métodos , Hemorragia/terapia , Humanos , Arteria Ilíaca/cirugía , Ligadura/métodos , Masculino , Estadificación de Neoplasias/métodos , Proctectomía/métodos , Neoplasias del Recto/diagnóstico , Resucitación/métodos , Región Sacrococcígea/irrigación sanguínea , Región Sacrococcígea/patología , Resultado del TratamientoRESUMEN
OBJECTIVES: This study aimed to validate the skin temperature on sacral region and vascular attributes as early warning signs of pressure injury. METHODS: Totally 415 patients admitted to the adult intensive care unit from August 2018 to April 2019 were prospectively screened. Daily blood pressure and blood glucose affecting vascular attributes and the relative skin temperature of sacral region were measured for 10 consecutive days. Collect the changes of these indicators during the occurrence of pressure injury. The optimal cut-off values of indicators were determined by X-tile analysis. The risk ratios of indicators associated with pressure injury were compared using the Cox proportional hazards regression model. RESULTS: There were no obvious interactions among blood pressure, blood glucose and relative skin temperature (P > 0.05). The optimal cutoff value for above indicators was 63.5 mmHg, 9.9 mmol/L and -0.1 °C, respectively. The incidence of pressure injury peaked on the 4th and 5th day after hospitalization when categorizing the patients into low- and high-risk groups according to the cutoff values (P < 0.05). Based on relative skin temperature, patients in the high-risk group were more likely to develop pressure injury (hazard ratio = 6.36, 95% confidence interval = 3.91, 10.36), when compared to the other two indicators of blood pressure and blood glucose. CONCLUSION: Stringent skin temperature and vascular attributes measurements were necessary for preventing pressure injury. Nursing measures should be taken according to warning sings to reduce the incidence of pressure injury.
Asunto(s)
Úlcera por Presión/fisiopatología , Región Sacrococcígea/irrigación sanguínea , Temperatura Cutánea/fisiología , Adulto , Anciano , Índice de Masa Corporal , China , Femenino , Humanos , Unidades de Cuidados Intensivos/organización & administración , Unidades de Cuidados Intensivos/estadística & datos numéricos , Masculino , Persona de Mediana Edad , Úlcera por Presión/diagnóstico , Modelos de Riesgos Proporcionales , Estudios Prospectivos , Región Sacrococcígea/fisiopatología , Encuestas y Cuestionarios , Centros de Atención Terciaria/organización & administración , Centros de Atención Terciaria/estadística & datos numéricosRESUMEN
OBJECTIVE: To evaluate the use of an infrared thermography device in assessing skin temperature among category I pressure ulcer (PU) and/or suspected deep tissue injuries (SDTI) with intact skin. METHODS: An observational cross-sectional study design was used. Adult inpatients (cases) who had a category I PU or suspected deep tissue injury (skin intact) on the sacral or heel during the study period (March to April 2018) were recruited. Patients without a PU were also recruited to act as control. Thermal images of the patient's PU site and non-PU site were taken within 24 hours of PU occurrence. Thermal images of the control patients (no PU) were also taken. Each PU case was matched to three control patients in terms of age, gender, race and anatomical sites. All thermal images were taken using a portable CAT S60 Thermal Imaging Rugged Smartphone (Caterpillar Inc., US) that provided readings of the skin temperature in degrees Celsius. RESULTS: A total of 17 cases and 51 controls were recruited. Among the cases, the mean difference in skin temperature between the PU site (mean: 31.14°C; standard deviation [SD]: 1.54) and control site within the cases (mean: 28.93°C; SD: 3.47) was significant (difference: 2.21±3.66°C; p=0·024). When comparing between all cases and controls, the mean temperature difference was non-significant. When comparing between the category I PU and suspected deep pressure injury cases, the mean difference was also non-significant. CONCLUSION: Using infrared thermography technology at the bedside to measure skin temperature will support the clinical diagnosis of patients with skin types I to III. However, there is a need for a more accurate and objective measurement to identify and diagnose early category I PU or suspected deep tissue injury in adult patients with darker skin types 4 and above, enabling early initiation of preventive measures in the hospital acute care setting.
Asunto(s)
Rayos Infrarrojos , Úlcera por Presión/diagnóstico por imagen , Temperatura Cutánea , Termografía/métodos , Anciano , Anciano de 80 o más Años , Estudios Transversales , Femenino , Talón/irrigación sanguínea , Talón/diagnóstico por imagen , Hospitalización , Humanos , Masculino , Persona de Mediana Edad , Úlcera por Presión/clasificación , Flujo Sanguíneo Regional , Región Sacrococcígea/irrigación sanguínea , Región Sacrococcígea/diagnóstico por imagen , Pigmentación de la PielRESUMEN
Existing evidence is inadequate to assume increased skin temperature is a risk factor for the development of pressure ulcers (PUs). PURPOSE: The purpose of this prospective, descriptive study was to examine the relationship between sacral skin temperature and PU development. METHODS: Using convenience sampling methods, patients who were hospitalized in the tertiary intensive care unit (ICU) of the internal medicine department of a university hospital in Izmir, Turkey, between April and December 2015 were eligible to participate if they were ⟩18 years of age, had an expected hospital stay of at least 5 days, a Braden score ≤12, and were admitted without a PU. Demographic and clinical data collected included age, gender, body mass index, diagnosis, mattress type, length of follow-up (days), systolic and diastolic blood pressure, body temperature, hemoglobin level, sacral skin temperatures in the supine and lateral positions, room temperature, PU stage and duration, and Braden score. Temperature was measured the day of hospitalization as a baseline measurement (day 1) and once every day thereafter up to 22 days, until the patient did or did not develop a PU, died, was no longer undergoing position change, or was discharged. Sacral skin temperature was taken immediately after the patient was moved to a lateral position following 120 minutes of supine position (referred to as supine position sacral skin temperature measurement) and after 30 minutes in lateral position (referred to as lateral position sacral skin temperature measurement). Data were collected using paper-and-pencil questionnaires and entered into a software program for analysis. Descriptive statistics, Student's t test, one-way analysis of variance test, Pearson product-moment correlation analysis, and Spearman's rank-order correlation analysis were used for data analysis. RESULTS: Of the 37 patients who met the inclusion criteria and were monitored for at least 5 days, 21 (56.8%) developed PUs. No statistically significant difference in supine position sacral skin temperature on day 1 or day 5 was found between patients who did and did not develop a PU (36.90° C ± 0.29° C and 37.15° C ± 0.53° C, respectively, on day 1; t = -1.656, P = .112; and 37.37° C ± 0.53° C and 37.30° C ± 0.79° C, respectively, on day 5; t = 0.259, P = .798). Day 5 lateral position skin temperatures also did not differ significantly between the 2 groups (37.44° C ± 0.44° C and 37.31° C ± 0.75° C, respectively; t = 1.306, P = .621). A statistically significant difference was noted between mean sacral skin temperature in the supine position among patients ages 75 to 90 years compared with patients 38 to 64 years and 65 to 74 years (36.93° C ± 0.39° C; F = 13.221, P = .000) and with use of a viscoelastic mattress compared with an alternating pressure air mattress and continuous lateral rotation alternating pressure air mattress (37.85° C ± 0.54° C; F = 14.039, P = .000). No statistically significant differences in sacral skin temperatures were found for any of the of the other variables assessed. CONCLUSION: Sacral skin temperatures were not statistically different between ICU patients who did and did not develop a PU. Additional research may help increase understanding of the relationship between skin temperature and PU development.
Asunto(s)
Úlcera por Presión/fisiopatología , Región Sacrococcígea/irrigación sanguínea , Temperatura Cutánea/fisiología , Adulto , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Masculino , Persona de Mediana Edad , Úlcera por Presión/complicaciones , Estudios Prospectivos , Factores de Riesgo , Región Sacrococcígea/anomalías , Región Sacrococcígea/fisiopatología , TurquíaRESUMEN
BACKGROUND: Recent revisions to the pressure injury staging system include guidance on differential diagnoses for deep tissue pressure injury (DTPI). Accurately identifying DTPI is critical; however, purpura in the setting of vascular disorders and systemic infectious processes can share similar features confounding diagnosis. CASES: In this three-case series, we describe suspected DTPI with an uncharacteristic shape or occurring in the presence of additional lesions distributed outside of typical pressure areas prompted further evaluation. CONCLUSIONS: The interdisciplinary approach we adapted was useful in determining the cause of purpura when the DTPI was ruled out by the certified wound care nurse.
Asunto(s)
Úlcera por Presión/clasificación , Púrpura/etiología , Región Sacrococcígea/anomalías , Adulto , Diagnóstico Diferencial , Femenino , Humanos , Masculino , Persona de Mediana Edad , Úlcera por Presión/complicaciones , Púrpura/clasificación , Región Sacrococcígea/irrigación sanguíneaRESUMEN
Pressure injuries resulting from long surgeries may be caused by prolonged ischemia. Operating table surfaces with alternating pressure (AP) features may reduce the risk of ischemia-induced pressure injuries by providing periodic relief of blood flow occlusions. Prior research investigated alternating loading applied with a single isolated rigid indenter and demonstrated increased perfusion. This study quantified effects of an overlay with AP on sacral skin perfusion for individuals lying supine for 60-min while blood flow was monitored. The mean normalized sacral skin blood flow was found to be greater with the AP overlay over an operating table pad compared to the operating pad alone (pad with AP mean SBFâ¯=â¯1.45⯱â¯1.16, pad without AP mean SBFâ¯=â¯1.03⯱â¯0.46, pâ¯=â¯0.10). Peak and average interface pressure at the sacrum was significantly lower during the deflation cycle of the AP surface compared to the operating pad alone (Pâ¯<â¯0.001), suggesting this periodic reduction resulted in higher mean blood flow. Post-hoc regression analysis showed participant body mass index was a significant predictor of the effectiveness of the AP overlay (pâ¯=â¯0.012). The results suggest risk for pressure injuries due to prolonged ischemia might be mitigated by the addition of an alternating pressure feature on operating table pads for lower BMI patients.
Asunto(s)
Lechos/normas , Diseño de Equipo/normas , Úlcera por Presión/prevención & control , Presión/efectos adversos , Región Sacrococcígea/irrigación sanguínea , Adulto , Anciano , Índice de Masa Corporal , Femenino , Humanos , Masculino , Persona de Mediana Edad , Quirófanos/organización & administración , Úlcera por Presión/etiologíaRESUMEN
Sacrococcygeal teratoma is one of the most common congenital tumors. Its optimal management requires interdisciplinary care by obstetricians, radiologists, pediatric surgeons, and neonatologists. Early surgery entailing complete tumor excision is the main therapy aim, but a substantial risk of life-threatening complications remains, especially uncontrollable intraoperative hemorrhage. To reduce the risk of bleeding in a female neonate with a giant sacrococcygeal teratoma, we successfully coil-embolized the tumor's main feeding arteries. Her subsequent complete surgical resection was uneventful, and the child is well with favorable reconstructive and functional status of all involved and adjacent organ systems.
Asunto(s)
Embolización Terapéutica/métodos , Región Sacrococcígea/irrigación sanguínea , Teratoma/terapia , Angiografía , Terapia Combinada , Femenino , Humanos , Recién Nacido , Cuidados Preoperatorios/métodos , Procedimientos de Cirugía Plástica/métodos , Región Sacrococcígea/cirugía , Teratoma/irrigación sanguínea , Procedimientos Quirúrgicos Vasculares/métodosRESUMEN
PURPOSE: The purpose of this study was to determine the effectiveness of a novel, noninvasive perfusion enhancement system versus beds with integrated alternating pressure capabilities for the prevention of hospital-acquired sacral region (sacral, coccygeal, and ischium) pressure injuries in a high-risk, acute care patient population. DESIGN: A prospective randomized trial of high-risk inpatients without preexisting sacral region pressure injuries was conducted. SUBJECTS AND SETTING: The sample comprised 431 randomly enrolled adult patients in a 300-bed tertiary care community teaching hospital. METHODS: Subjects were randomly allocated to one of 2 groups: control and experimental. Both groups received "standard-of-care" pressure injury prevention measures per hospital policy, and both were placed on alternating pressure beds during their hospital stays. In addition, patients in the experimental group used a noninvasive perfusion enhancement system placed on top of their alternating pressure beds and recovery chairs throughout their hospital stay. Fischer's exact probability test was used to compare group differences, and odds ratio (OR) were calculated for comparing pressure injury rates in the experimental and control groups. RESULTS: Three hundred ninety-nine patients completed the trial; 186 patients were allocated to the experimental group and 213 patients to the control group. Eleven patients in the control group versus 2 in the experimental group developed hospital-acquired sacral region pressure injuries (51.6% vs 1.07%; P = .024). Control patients were 5.04 times more likely to develop hospital-acquired sacral region pressure injuries (OR = 0.1996; 95% CI, 0.0437-0.9125). CONCLUSIONS: Patients using a noninvasive perfusion enhancement system developed significantly fewer hospital-acquired sacral pressure injuries than those using an alternating pressure bed without the perfusion enhancement system. These findings suggest that a perfusion enhancement system enhances the success of use of pressure redistributing beds for prevention of hospital-acquired sacral pressure injuries.
Asunto(s)
Alineadores Dentales/normas , Perfusión/instrumentación , Perfusión/métodos , Úlcera por Presión/terapia , Anciano , Lechos/normas , Femenino , Humanos , Enfermedad Iatrogénica , Masculino , Persona de Mediana Edad , Perfusión/normas , Estudios Prospectivos , Factores de Riesgo , Región Sacrococcígea/irrigación sanguínea , Región Sacrococcígea/lesionesRESUMEN
Prevention of hospital-acquired pressure injuries (HAPIs) remains a crucial clinical challenge especially for those patients undergoing surgery. The purpose of this project was to examine whether a 5-layer silicone foam dressing applied to the sacrum of patients undergoing vascular surgery decreased the occurrence of sacral pressure injuries and to explore participant characteristics associated with the development of operating room (OR)-related pressure injuries. A pre-/postintervention design, quality improvement project in a convenience sample of 81 patients undergoing vascular surgery, in a 700-bed level I trauma acute care setting, in the Northeastern United States. Eighty-one patients undergoing vascular surgery participated in this project. Thirty-seven were in the preintervention group who were identified from the housewide pressure injury prevalence data from May and December 2010 and received standard pressure injury prevention while hospitalized. Forty-four patients in the intervention group were identified from a hospital-based outpatient vascular surgery office and preoperatively received the 5-layer silicone foam dressing in addition to standard care. Data were collected on the third and seventh postoperative days via the electronic medical record and paper medical records. Collected data included age, gender, comorbidities (diabetes, hypertension, peripheral vascular disease and, smoking status), presence of a 5-layer silicone sacral foam dressing, and pressure injury occurrence. Analysis included descriptive statistics, Fisher exact test to compare groups, and logistic regression to identify associated risk factors. More than 50% (n = 19) in the preintervention group developed a hospital-acquired pressure injury while only 1 subject (n = 2%) in the intervention group developed a hospital-acquired pressure injury (P = .000). Findings indicate that, after controlling for age, gender, and other comorbidities, application of a 5-layer silicone sacral foam dressing significantly reduced the likelihood of development of a new pressure injury (OR= 0.04, 95% confidence interval, 0.00-40; P = .006). This pre-/postquality improvement project, using a 5-layer silicone sacral foam dressing in addition to standard operating room pressure injury preventive interventions, for elective vascular surgical cases, resulted in a significant decrease in sacral operating room-related pressure injuries. These findings suggest the effectiveness of a 5-layer silicone foam dressing when added to standard preventive interventions. The findings warrant further investigation of additional preventative interventions in the OR specific to high-risk populations.
Asunto(s)
Vendajes/normas , Quirófanos/métodos , Úlcera por Presión/prevención & control , Anciano , Anciano de 80 o más Años , Femenino , Humanos , Enfermedad Iatrogénica/prevención & control , Modelos Logísticos , Masculino , Persona de Mediana Edad , New England/epidemiología , Quirófanos/organización & administración , Úlcera por Presión/epidemiología , Mejoramiento de la Calidad , Factores de Riesgo , Región Sacrococcígea/irrigación sanguínea , Geles de Silicona/uso terapéutico , Procedimientos Quirúrgicos Vasculares/efectos adversos , Procedimientos Quirúrgicos Vasculares/métodosRESUMEN
Many types of flaps are available if surgical reconstruction of a pressure ulcer is indicated, including a gluteus maximus flap, V-Y advancement flap, and superior gluteal artery perforator flap. Regional flap failure can complicate treatment, requiring additional flap surgery. An 80-year old woman with a 2-year history of being unconscious following a cerebrovascular accident presented with a Stage 4 sacral pressure ulcer of 2 months' duration with eschar and abscess formation. Because the wound measured 15 × 10 cm2, bilateral V-Y advancement flaps were used for surgical closure. However, 1 week later, ischemic change of the wound edges and wound dehiscence were observed. The wound was subsequently closed with an artery perforator (IGAP) flap, an approach that took into consideration religious preference of keeping the body intact. The patient was discharged with a healed wound 6 weeks postoperatively; long-term postoperative surveillance was hindered by the patient's distance from the care facility (she lived on an outlying island). This is the first case report to describe IGAP flap application in a patient with a sacral pressure ulcer after failed reconstruction using bilateral V-Y advancement flaps.
Asunto(s)
Procedimientos de Cirugía Plástica/normas , Úlcera por Presión/cirugía , Región Sacrococcígea/fisiopatología , Anciano de 80 o más Años , Femenino , Humanos , Colgajo Perforante/irrigación sanguínea , Colgajo Perforante/fisiología , Complicaciones Posoperatorias/fisiopatología , Complicaciones Posoperatorias/cirugía , Úlcera por Presión/complicaciones , Procedimientos de Cirugía Plástica/métodos , Región Sacrococcígea/irrigación sanguíneaRESUMEN
INTRODUCTION: We investigated the additive value of the 3T 3D constructive interference in steady state (CISS) sequence to conventional MRI for the evaluation of spinal dural arteriovenous fistulae (SDAVF). MATERIALS AND METHODS: We included 16 consecutive patients (15 men, 1 woman; age range 42-81 years; mean 64 years) with SDAVF who underwent 3T MRI and digital subtraction angiography (DSA) before treatment. Two neuroradiologists independently evaluated the presence of abnormal vessels on 3D CISS-, T2- and T1-weighted images (T1WI, T2WI), and contrast-enhanced T1WI using a 3-point grading system. Interobserver agreement was assessed by calculating the κ coefficient. RESULTS: The SDAVF site was the cervical region in one patient, the thoracic region in 12 patients, the lumbar region in two, and the sacral region in one. For the visualization of abnormal vessels, the mean score was significantly higher for 3D CISS than the other sequences (P < 0.05). In 12 of 16 cases (75%) both readers made definite positive findings on additional 3D-CISS images. Interobserver agreement was excellent for 3D CISS images (κ = 1.0), good for T1WI (κ = 0.78; 95% confidence interval [CI] 0.54-1.00) and T2WI (κ = 0.74; 95% CI 0.48-1.00) and moderate for contrast-enhanced T1WI (CET1WI) (κ = 0.50; 95% CI 0.21-0.80). CONCLUSION: For the assessment of abnormal vessels of SDAVF, the 3T 3D CISS sequence adds value to conventional MRI.
Asunto(s)
Malformaciones Vasculares del Sistema Nervioso Central/diagnóstico por imagen , Imagenología Tridimensional/métodos , Imagen por Resonancia Magnética/métodos , Columna Vertebral/irrigación sanguínea , Columna Vertebral/diagnóstico por imagen , Adulto , Anciano , Anciano de 80 o más Años , Angiografía de Substracción Digital , Arterias/anomalías , Arterias/diagnóstico por imagen , Vértebras Cervicales/irrigación sanguínea , Vértebras Cervicales/diagnóstico por imagen , Medios de Contraste , Femenino , Humanos , Aumento de la Imagen , Vértebras Lumbares , Masculino , Persona de Mediana Edad , Estudios Retrospectivos , Región Sacrococcígea/irrigación sanguínea , Región Sacrococcígea/diagnóstico por imagen , Vértebras Torácicas/irrigación sanguínea , Vértebras Torácicas/diagnóstico por imagenRESUMEN
Prolonged mechanical loading can lead to the breakdown of skin and underlying tissues which can, in turn, develop into a pressure ulcer. The benefits of pressure relief and/or redistribution to minimise risk have been well documented. Manufacturers have developed alternating air pressure mattresses (APAMs) to provide periodic relief for individuals on prolonged bed-rest. The present study describes the development of a control system, termed Pneumatic Manager which can vary the signature of an APAM, namely its pressure amplitude, cell profile and cycle period. An experimental array was designed to investigate the effects of varying these parameters, particularly with respect to its ability to maintain skin viability in a group of five healthy volunteers lying in a supine position. Transcutaneous gas (TcPO2/TcPCO2) tensions at the sacrum were monitored. In addition, pressures and microclimate parameters at the loaded support interface were also measured. In the majority of test conditions the alternating support produced sacral TcPO2 values, which either remained relatively high or fluctuated in concert with cycle period providing adequate viability. However, in 46% of cases at the extreme pressure amplitude of 100/0 mmHg, there was compromise to the skin viability at the sacrum, as reflected in depressed TcPO2 levels associated with an elevation of TcPCO2 levels above the normal range. In all cases, both the humidity and temperature levels increased during the test period. It is interesting to note that interface pressures at the sacrum rarely exceeded 60 mmHg. Although such studies need to be extended to involve bed-bound individuals, the results provide a design template for the optimum pressure signatures of APAM systems to ensure maintenance of skin viability during pronged loading.
Asunto(s)
Lechos/normas , Presión/efectos adversos , Transductores de Presión/estadística & datos numéricos , Pesos y Medidas/instrumentación , Adulto , Diseño de Equipo/normas , Femenino , Humanos , Masculino , Úlcera por Presión/fisiopatología , Úlcera por Presión/prevención & control , Región Sacrococcígea/irrigación sanguínea , Región Sacrococcígea/fisiopatologíaRESUMEN
BACKGROUND AND AIM: Gigantic pressure sores pose a daunting challenge for plastic surgeons. This paper presents a composite gluteofemoral flap for reconstruction of large pressure sores over the sacrococcygeal region. METHODS: In this anatomical study, 30 embalmed cadaveric lower limbs were used for dissection to observe the musculocutaneous perforators of the inferior gluteal artery and the longitudinal nutritional vascular chain of the posterior femoral cutaneous nerve. In this clinical study, eight patients underwent surgical harvest of the composite gluteofemoral flap for coverage of grade IV sacrococcygeal pressure sores. The size of the pressure sores ranged between 16 × 9 cm and 22 × 10 cm. RESULTS: The inferior gluteal artery was present in 26 cases and absent in four cases. It gave off two to four musculocutaneous branches with a diameter larger than 0.5 mm to the gluteus maximus. A direct cutaneous branch was given off at the inferior margin of the gluteus maximus, serving as a nutritional artery for the posterior femoral cutaneous nerve. The size of the flap harvested ranged between 22 × 9 cm and 32 × 10 cm. Flaps in seven patients survived uneventfully and developed epidermal necrosis at the distal margin in one case. An average 2-year follow-up revealed no recurrence of pressure sores. CONCLUSION: The composite gluteofemoral flap, being robust in blood supply, simple in surgical procedure, and large in donor territory, is an important addition to the armamentarium.
Asunto(s)
Procedimientos de Cirugía Plástica/métodos , Úlcera por Presión/cirugía , Región Sacrococcígea , Colgajos Quirúrgicos/irrigación sanguínea , Adolescente , Adulto , Nalgas/irrigación sanguínea , Cadáver , Femenino , Humanos , Pierna/irrigación sanguínea , Masculino , Persona de Mediana Edad , Región Sacrococcígea/irrigación sanguínea , Resultado del TratamientoRESUMEN
According to the classical ladder theory, the mesonephric arteries (MAs) have a segmental arrangement and persist after regression of the mesonephros, with some of these vessels becoming definitive renal arteries. To avoid interruption of blood flow, such a vascular switching would require an intermediate stage in which two or more segmental MAs are connected to a definitive renal artery. To examine developmental changes, especially changes in the segmental distribution of MAs, we studied serial paraffin sections of 26 human embryos (approximately 5-7 weeks). At 5-6 weeks, 1-2 pairs of MAs ran anterolaterally or laterally within each of the lower thoracic vertebral segments, while 2-5 pairs of MAs were present in each of the lumbar vertebral segments, but they were usually asymmetrical. The initial metanephros, extending along the aorta from the first lumbar to first sacral vertebra, had no arterial supply despite the presence of multiple MAs running immediately anterior to it. Depending on increased sizes of the adrenal and metanephros, the MAs were reduced in number and restricted in levels from the twelfth thoracic to the second lumbar vertebra. The elimination of MAs first became evident at a level of the major, inferior parts of the metanephros. Therefore, a hypothetical arterial ladder was lost before development of glomeruli in the metanephros. At 7 weeks, after complete elimination of MAs, a pair of symmetrical renal arteries appeared near the superior end of the metanephros. In conclusion, the MAs appear not to persist to become a definitive renal artery.
Asunto(s)
Glándulas Suprarrenales/embriología , Arterias/embriología , Desarrollo Fetal/fisiología , Riñón/embriología , Mesonefro/embriología , Arteria Renal/embriología , Glándulas Suprarrenales/irrigación sanguínea , Adulto , Femenino , Edad Gestacional , Humanos , Glomérulos Renales/crecimiento & desarrollo , Vértebras Lumbares/irrigación sanguínea , Vértebras Lumbares/embriología , Mesonefro/irrigación sanguínea , Embarazo , Flujo Sanguíneo Regional , Circulación Renal , Región Sacrococcígea/irrigación sanguínea , Región Sacrococcígea/embriologíaRESUMEN
The method of rotational cutaneo-fascial plasty, applying preservation of perforating arteries in subfascial dissection with mobilization and subsequent rotation of the flaps was improved, guaranteeing preservation of blood flow from multiple perforating arteries in them. The method was successfully applied in 3 patients with a Grade IV sacral bedsores.
Asunto(s)
Nalgas/cirugía , Colgajo Miocutáneo , Úlcera por Presión/cirugía , Región Sacrococcígea/cirugía , Adulto , Arterias/cirugía , Nalgas/irrigación sanguínea , Nalgas/patología , Fasciotomía , Femenino , Humanos , Masculino , Persona de Mediana Edad , Úlcera por Presión/patología , Región Sacrococcígea/irrigación sanguínea , Región Sacrococcígea/patologíaRESUMEN
Surgery of genital prolapse causes haemorrhagic complications in about 1% of cases. The pelvis is highly vascular and accessing the usual landmarks of vaginal surgery, in particular the sciatic spine, is delicate work. Meticulous dissection of closed spaces is often difficult, and exposure and haemostatic procedures will be challenging in the event of any bleeding complication. When fixing prosthesis to the sacrospinous ligament, the inferior gluteal artery and its coccygeal branch are at risk. Fixation to the sacrospinous ligament must be performed more than 25mm away from the sciatic spine and, if possible, must not transfixiate it. Safe insertion of prosthesis requires sufficient experience, and an adequate learning curve. Being aware of vascular anatomy allows one to understand and treat haemorrhagic incidents. Packing or selective embolization seem to be the two methods to adopt, depending on the severity of bleeding and the conditions of exposure on the one hand, and on the technical resources available for embolization, on the other. Hypogastric ligature appears to be ineffective in this context.
Asunto(s)
Hemorragia/terapia , Complicaciones Intraoperatorias/terapia , Prolapso Uterino/cirugía , Femenino , Hemostasis Quirúrgica/métodos , Humanos , Ligamentos/cirugía , Región Sacrococcígea/irrigación sanguínea , Vagina/cirugíaRESUMEN
Presacral bleeding is a dreaded complication of pelvic surgery. Rapid and effective control of such bleeding is important to avoid potentially life-threatening outcomes. Various methods for controlling presacral bleeding, all with only limited success, have been described in the literature. We report the alternative technique of using the argon beam coagulator (ABC) to control presacral bleeding. We demonstrate its efficacious use in both open surgery and a laparoscopic case. Our approach involved applying an argon beam at bone setting directly to the bleeders and using a "point and shoot" technique. We found that ABC is a simpler, equally effective and expeditious way of addressing presacral bleeding. To the best of our knowledge, there has been only one previously reported case in the literature of the use of ABC to control presacral bleeding.