In meiosis I, homologous chromosomes separate, while in meiosis II, sister chromatids separate. Meiosis II produces 4 haploid daughter cells, whereas meiosis I produces 2 diploid daughter cells. Genetic recombination (crossing over) only occurs in meiosis I.
Answer:
This is achieved because the sodium channels have a refractory period following activation, during which they cannot open again. This ensures that the action potential is propagated in a specific direction along the axon.
Prior studies have not included trauma and postoperative patients, but it has been demonstrated that therapeutic hypothermia (TH) and targeted temperature management (TTM) improve outcomes in cardiac arrest survivors. We investigated the safety of TH/TTM in surgical and trauma patients. An adult patient who presented with a cardiac or traumatic arrest in the postoperative period and had been treated with either TH or TTM had a Glasgow Coma Scale of 8 when the patient was reviewed in a retrospective cohort study at a single level I trauma center. A patient's neurological recovery is deemed positive if they were released after obeying orders.
32 cardiac arrest patients in all, 14 of whom received TH treatment and 18 of whom received TTM treatment, with target temperatures of 33°C and 36°C, respectively, were included in the study. With 26 (81%) men, the cohort had a mean age of 60 13. There were 14 postoperative patients and 18 trauma patients. Pneumonia (13%), sepsis (6%), bleeding that required transfusion (22%), arrhythmias (6%), and seizures (9%), which are similar to earlier reported series, were among the complications. All survivors had good neurological recovery, and the overall survival rate (n = 13) to discharge was 41%. Patients who had previously been excluded from TH/TTM studies due to traumatic arrest and postoperative cardiac arrest appear to have an acceptable incidence of problems compared to conventional TH/TTM patients.
What is cardiac arrest ?
When the heart unexpectedly and unexpectedly stops pumping, cardiac arrest happens. If this occurs, blood supply to the brain and other important organs is interrupted. Certain arrhythmias that stop the heart from pumping blood result in cardiac arrests. A medical emergency is cardiac arrest.
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Answer:
A. Aortic insufficiency is commonly associated with subarterial VSD.
Explanation:
In interventricular septal defects of the outflow tract in the heart, the subarterial infundibular interventricular communications are observed. This situation or anatomical condition can generate the development of prolapse and / or aortic insufficiency. The anatomical origin that could generate an aortic prolapse is the absence of support of the anterior sigmoid, since there would be no infundibular septum beneath it. The triggering of the prolapse and the subsequent insufficiency would be the difference in pressure generated between aorta and pulmonary infundibulum. For this reason there is an increased hemodynamic risk in complications of the disease.
