ABSTRACT
PURPOSE: The use of long-term continuous EEG (cEEG) monitoring in neurological-neurosurgical intensive care units (NSICU) has witnessed an exponential increase. We decided to do an audit of the long-term cEEG monitoring in our NSICU over the past 7 years (2005-2011). The study was performed to determine technical and staffing consideration for the future. METHODS: An audit of all long-term cEEG monitoring studies in our NSICU from 2005 through 2011. RESULTS: We found a dramatic increase in the use of the cEEG monitoring in our NSICU over the 7-year period. CONCLUSIONS: The use of long-term cEEG monitoring in the NSICU is expected to further increase in the coming years. Stricter clinical criteria for undertaking cEEG recordings are likely to increase the role and usefulness of this procedure.
Subject(s)
Brain Waves/physiology , Electroencephalography , Intensive Care Units , Monitoring, Physiologic , Female , Humans , Longitudinal Studies , Male , Nervous System Diseases/nursing , Nervous System Diseases/physiopathology , Nervous System Diseases/surgery , Retrospective StudiesABSTRACT
BACKGROUND: In obstructive sleep apnea/hypopnea syndrome, immediate physiological consequences of events have a dual role: censoring artifacts and gauging physiological significance. Newer airflow monitors may have changed the relative importance of these functions. The purpose of this study was to determine the frequency and hierarchy of occurrence of oxygen desaturation, EEG arousal and heart rate changes as immediate consequences of respiratory events. METHODS: Thirty-nine sleep apnea patients underwent polysomnography with airflow detection by nasal cannula. Eighty events/subject were randomly selected and evaluated for 4% oxygen desaturation, EEG arousal and heart rate increase. RESULTS: Of apneas, 78% caused desaturation, 63% arousal, and 73% heart rate increase. Of hypopneas, 54% caused desaturation, 47% arousal, and 55% heart rate increase. Of events with mildest amplitude reduction 25% caused desaturation, 42% arousal, and 42% heart rate increase. Consequences overlapped but did not occur hierarchically: each occurred alone and in all combinations. CONCLUSION: No single consequence occurred after every event; thus none can be used to corroborate airflow reduction as non-artifactual without missing events corroborated by other consequences. As different consequences validate non-hierarchical sets of respiratory events, we propose there is need to capture all changes in breathing in obstructive sleep apnea/hypopnea syndrome before examining their role in clinical outcome.
Subject(s)
Sleep Apnea Syndromes/etiology , Sleep Apnea, Obstructive/complications , Adult , Aged , Continuous Positive Airway Pressure/methods , Disorders of Excessive Somnolence/diagnosis , Disorders of Excessive Somnolence/epidemiology , Disorders of Excessive Somnolence/etiology , Electrocardiography , Electroencephalography , Electromyography , Electrooculography , Female , Heart Rate/physiology , Humans , Male , Middle Aged , Oxygen/metabolism , Severity of Illness Index , Sleep Apnea Syndromes/diagnosis , Sleep Apnea, Obstructive/diagnosis , Sleep Apnea, Obstructive/therapy , Sleep Stages , Surveys and QuestionnairesABSTRACT
BACKGROUND: Hereditary predisposition to colorectal cancer most often manifests itself as familial adenomatous polyposis from mutations of APC, or hereditary nonpolyposis colorectal cancer, resulting from mutations of MSH2, MLH1, MSH6, or other genes. Previously, we described a rare founder mutation MSH2*1906C > G in Ashkenazi Jews that was found in 8 of 1,345 individuals (0.6%) of Ashkenazi descent with colorectal cancer. This study seeks to characterize the proportion of individuals of Ashkenazi heritage with very early-onset colon cancer (diagnosed at age 40 or younger) that could be attributed to MSH2*1906C>G. STUDY DESIGN: We analyzed the carrier frequency of MSH2*1906C>G in paraffin samples from 31 Jewish patients age 40 or less, diagnosed with colorectal cancer at Memorial Sloan-Kettering and lymphocyte-derived DNA from 10 patients. We did not select for family history. Genotyping for MSH2*1906C>G was performed by polymerase chain reaction and restriction enzyme digestion methods. RESULTS: We detected the MSH2*1906G>C mutation in 3 of the 41 samples (7.14%) of patients who had colorectal cancer diagnosed at age 40 or younger. This incidence is significantly greater than the 8 in 1,345 (0.6%) we observed for cases of colorectal cancer in Ashkenazi Jews not selected for age (p = 0.004). CONCLUSION: Although very rare in the population, MSH2*1906G>C is found at an increased frequency in young Jewish patients with colorectal cancer. These results suggest that testing for the MSH2*1906G>C mutation should be included in the evaluation of Ashkenazi Jewish individuals diagnosed with early-onset colon cancer.
