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Related Concept Videos

Acute Pyelonephritis I: Introduction01:27

Acute Pyelonephritis I: Introduction

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Pyelonephritis is a bacterial infection that primarily affects the renal parenchyma and collecting system, including the renal pelvis, tubules, and interstitial tissue of one or both kidneys. It can be classified as either acute—a sudden, severe infection—or chronic, which refers to long-term or recurrent kidney infections.The primary cause of acute pyelonephritis (APN) is bacterial infection, with Escherichia coli accounting for approximately 70-80% of cases. Other bacteria, such...
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Acute Pharyngitis01:30

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Acute pharyngitis is the inflammation of the back of the throat (pharynx), commonly resulting in a sore throat. It is a frequently encountered condition that prompts individuals to seek medical advice.
Classification
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Acute Pancreatitis I: Introduction01:27

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Pancreatitis is inflammation of the pancreas, an organ located behind the stomach. It can be either acute or chronic.
Acute pancreatitis is characterized by rapid inflammation of the pancreas, often caused by factors like gallstone blockage or excessive alcohol consumption. Chronic pancreatitis, on the other hand, is a slow, progressive inflammation that may result from long-term alcohol abuse, obstructions in the pancreatic duct, or genetic factors.
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Acute Respiratory Failure-I01:21

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Acute respiratory failure is a condition characterized by the inability of the lungs to perform their primary function: gas exchange. This failure leads to insufficient oxygen levels (hypoxemia) in the blood, elevated carbon dioxide levels (hypercapnia), or both, causing critical impairment in organ function.
Definition: It is defined by specific criteria based on blood gas measurements. Hypoxemia happens when the partial pressure of oxygen (PaO2) falls below 60 mmHg. At the same time,...
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Acute Respiratory Failure-II01:21

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Type I Respiratory Failure, or hypoxemic respiratory failure, occurs when the partial pressure of oxygen (PaO2) in arterial blood falls below 60 mmHg while breathing room air without a corresponding increase in arterial carbon dioxide levels (PaCO2). This condition highlights a significant impairment in the lungs' capacity to oxygenate the blood.
The underlying physiological abnormalities that contribute to hypoxemic respiratory failure include:
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The treatment for acute respiratory failure varies based on factors like the underlying cause, overall health, and severity. A collaborative healthcare team is essential for early detection, often through arterial blood gas analysis. Identifying the cause is the primary goal, with treatment strategies adjusted for ventilation/perfusion (V/Q) mismatch, shunting, or diffusion impairment.
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Murine Model of Leukemia Relapse to Induction Chemotherapy for Acute Lymphoblastic Leukemia
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[Acute leukemia].

T Fujimoto

    Gan No Rinsho. Japan Journal of Cancer Clinics
    |July 1, 1984
    PubMed
    Summary
    This summary is machine-generated.

    Central nervous system (CNS) leukemia is a significant problem in childhood acute leukemia, particularly in acute lymphocytic leukemia (ALL). Intensive CNS prophylaxis combining cranial irradiation with intrathecal methotrexate and hydrocortisone is highly effective, especially for high-risk patients.

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    Area of Science:

    • Pediatric Oncology
    • Hematology
    • Neuro-Oncology

    Context:

    • Systemic chemotherapy for acute leukemia has led to increased survival, but also to a rise in central nervous system (CNS) leukemia.
    • Understanding the incidence and risk factors for CNS leukemia is crucial for improving treatment outcomes in childhood leukemia.
    • The CNS is a sanctuary site for leukemic cells, making it a challenge for systemic therapies to eradicate.

    Purpose:

    • To investigate the incidence of CNS leukemia in childhood acute leukemia and identify associated risk factors.
    • To evaluate the efficacy of different CNS prophylaxis regimens in preventing CNS leukemia in acute lymphocytic leukemia (ALL).
    • To determine the optimal strategy for CNS prophylaxis in high-risk pediatric ALL patients.

    Summary:

    • The study analyzed 131 cases of childhood acute leukemia, revealing a 30% incidence of CNS leukemia in ALL and 8% in AML. Prolonged survival, younger age, high initial leukemic cell counts, high peripheral blood leukemic cell rates, and enlarged lymph nodes were associated with increased CNS leukemia risk.
    • A subsequent analysis of 153 ALL patients treated with various CNS prophylaxis methods (intrathecal methotrexate/hydrocortisone, cyclic therapy, or cranial irradiation) showed that cranial irradiation combined with intrathecal agents significantly reduced CNS leukemia incidence.
    • The cumulative incidence of CNS leukemia at 4 years was 40.5% (Group I), 26.9% (Group II), and 14.5% (Group III), with higher rates observed in males and patients with high initial leukocyte counts.

    Impact:

    • The findings underscore the importance of intensive CNS prophylaxis in pediatric ALL to prevent leukemic infiltration of the central nervous system.
    • The combination of cranial irradiation and intrathecal chemotherapy is identified as a highly efficacious strategy for CNS leukemia prevention.
    • Further intensification of CNS prophylaxis is recommended for high-risk subgroups, including males with high initial white blood cell counts, to improve long-term outcomes.