Bipolar mania - Nursing Case Study
Pathophysiology
• Primary mechanism: Dysregulation of neurotransmitters like dopamine and norepinephrine leads to heightened arousal and energy. This neurotransmitter imbalance results in the elevated mood, increased activity, and impulsivity characteristic of manic episodes.
• Secondary mechanism: Dysfunction in neuronal signaling pathways, particularly in the prefrontal cortex and limbic system, affects emotional regulation and decision-making. This disruption contributes to the exaggerated responses and poor judgment observed in mania.
• Key complication: Persistent manic episodes can lead to severe social, occupational, and relational disruptions, increasing the risk of substance abuse and self-harm due to impaired impulse control and judgment.
Patient Profile
Demographics:
34-year-old female, graphic designer
History:
• Key past medical history: Diagnosed with Bipolar I Disorder 5 years ago; history of hypertension
• Current medications: Lithium carbonate, Lisinopril, Lorazepam as needed
• Allergies: Penicillin
Current Presentation:
• Chief complaint: Increased energy levels and racing thoughts for the past two weeks
• Key symptoms: Decreased need for sleep, talking more than usual, increased goal-directed activities, irritability, difficulty focusing
• Vital signs: Blood pressure 148/92 mmHg, heart rate 102 bpm, respiratory rate 20 breaths per minute, temperature 98.6°F
Section 1
As the manic episode progresses, the patient begins to exhibit more pronounced symptoms that suggest evolving complications. During a routine follow-up visit, her mental state appears increasingly disorganized. She reports experiencing auditory hallucinations, a new development that raises concerns about psychotic features emerging in her manic episode. These hallucinations, coupled with her persistent irritability and impulsivity, are indicative of a more severe manic state. Her blood pressure remains elevated at 150/94 mmHg, and her heart rate has increased to 110 bpm, suggesting heightened physiological arousal that could complicate her pre-existing hypertension.
The healthcare team decides to conduct further diagnostic testing to assess the patient's current condition. A complete blood count and comprehensive metabolic panel reveal an elevated white blood cell count and slightly elevated liver enzymes, which could indicate an inflammatory response or medication side effects. Of particular concern is the lithium level, which is found to be at the upper therapeutic range, necessitating close monitoring to prevent toxicity. Additionally, an ECG is ordered due to her elevated heart rate and history of hypertension, which shows sinus tachycardia but no acute ischemic changes.
In response to these findings, the clinical team adjusts the treatment plan. The dosage of lithium is re-evaluated and temporarily reduced to mitigate the risk of toxicity while maintaining its mood-stabilizing effects. An increased frequency of monitoring is initiated, including regular vital signs and mental status assessments, to closely observe her response to these changes. The introduction of a low-dose antipsychotic is considered to address the psychotic symptoms and help stabilize her mood. This situation underscores the need for diligent clinical reasoning to balance the management of bipolar mania with the prevention of complications arising from both the condition itself and its treatment.
Section 2
In the days following the adjustments to her treatment plan, the patient returns for another follow-up visit. During this appointment, the healthcare team notes a change in her status. Her mental state appears slightly more stable, with a reduction in auditory hallucinations and somewhat improved organization of thoughts. However, she continues to exhibit signs of irritability and impulsivity, albeit less intensely. Her vital signs show a slight improvement, with her blood pressure now at 142/90 mmHg and heart rate reduced to 102 bpm, suggesting a positive response to the temporary reduction in lithium dosage and the introduction of a low-dose antipsychotic.
Despite these improvements, new complications arise. The patient reports experiencing increased levels of fatigue and occasional muscle weakness, prompting the team to consider the possibility of mild lithium toxicity or side effects from the antipsychotic medication. Another complete blood count and comprehensive metabolic panel are ordered, revealing a slight decrease in her white blood cell count but persistent elevation in liver enzymes. Her lithium level is reassessed and found to be slightly reduced but still within the therapeutic range, indicating the need for continued monitoring and possible further adjustments.
These developments highlight the complexity of managing bipolar mania with emerging psychotic features and underline the importance of a nuanced approach to treatment. The healthcare team reconvenes to discuss the next steps, weighing the benefits of further adjusting medication against the risks of exacerbating side effects. A decision is made to maintain the current lithium dosage while considering an alternative antipsychotic with a different side effect profile to better address the patient's fatigue and muscle weakness. Additionally, the team emphasizes the need for consistent patient education and support, ensuring she understands the importance of adhering to her medication regimen and attending regular follow-up visits to prevent further complications.
Section 3
As the healthcare team implements the adjusted treatment plan, the patient returns for a follow-up visit two weeks later. During this appointment, the team observes further changes in her clinical status. Her mental state continues to show signs of stabilization, with a marked decrease in impulsivity and irritability. However, she reports persistent fatigue and muscle weakness, which have slightly worsened since her last visit. Her vital signs reveal a blood pressure of 138/88 mmHg and a heart rate of 98 bpm, indicating some cardiovascular improvement. Despite these positive trends, the patient expresses concerns about feeling unusually lethargic and experiencing occasional tremors.
In light of these new symptoms, the healthcare team decides to conduct additional diagnostic testing to pinpoint the cause. A repeat comprehensive metabolic panel is ordered, along with a thyroid function test. The results reveal a further decline in white blood cell count and a mild elevation in TSH levels, suggesting the onset of subclinical hypothyroidism possibly linked to lithium therapy. Her liver enzymes remain elevated, prompting the team to consider whether the current antipsychotic might be contributing to hepatic strain.
These findings necessitate careful clinical reasoning to balance the management of bipolar mania symptoms with the emerging complications. The team discusses the potential need to switch to an antipsychotic with a reduced risk of hepatic side effects and to initiate low-dose levothyroxine therapy to address the hypothyroid state. Engaging the patient in a detailed discussion about her symptoms and treatment options becomes crucial, emphasizing the importance of adherence to her medication regimen and regular monitoring to mitigate further complications. The team schedules more frequent follow-up visits to closely monitor her response to these interventions, ensuring a proactive approach to her evolving clinical picture.
Section 4
Two weeks following the initiation of the new treatment plan, which included switching to an antipsychotic with a lower risk of hepatic side effects and starting low-dose levothyroxine therapy, the patient returns for another follow-up. During this visit, her mental state appears more stable, with improved mood regulation and further reduction in impulsivity. Her cardiovascular status remains steady, with blood pressure recorded at 135/85 mmHg and a heart rate of 92 bpm. However, the patient continues to report persistent fatigue and occasional tremors, raising concerns about the effectiveness and potential side effects of her current medication regimen.
A repeat comprehensive metabolic panel and thyroid function test are conducted to reassess her biochemical status. The results show a slight improvement in liver enzyme levels, suggesting that the change in antipsychotic medication may be reducing hepatic strain. However, her TSH level remains mildly elevated, indicating that the hypothyroid state has not yet fully resolved with the current dose of levothyroxine. Furthermore, her white blood cell count continues to trend downward, prompting consideration of whether her medication regimen or an underlying condition may be contributing to this hematological change.
These findings necessitate a reevaluation of the treatment approach. The healthcare team discusses the possibility of adjusting the levothyroxine dose to better address the subclinical hypothyroidism, while also exploring other potential causes for the persistent fatigue and tremors. They emphasize the importance of continued monitoring and engage the patient in a collaborative discussion about lifestyle factors, such as sleep hygiene and nutrition, that may support her overall well-being. The team decides to schedule weekly follow-up visits to closely track her progress and to ensure that the treatment regimen remains aligned with her evolving clinical needs.
Section 5
Two weeks into the adjusted treatment plan, the patient presents for her scheduled follow-up appointment, and there are notable changes in her condition. Her mental state remains relatively stable, with continued improvement in mood regulation, but she now reports experiencing increased levels of anxiety and occasional palpitations. Vital signs are recorded, showing a blood pressure of 140/88 mmHg and a heart rate of 98 bpm, suggesting a slight increase in cardiovascular activity. The patient also mentions experiencing more frequent episodes of tremors and persistent fatigue, despite her adherence to the medication regimen and lifestyle recommendations provided during the last visit.
A new set of laboratory tests, including a complete blood count and thyroid function panel, is conducted to further investigate these symptoms. The results reveal that her TSH level has decreased modestly but remains mildly elevated, indicating that the adjusted levothyroxine dose may not be fully addressing her hypothyroid state. Additionally, her white blood cell count has decreased further, raising concerns about potential drug-induced leukopenia or another underlying condition contributing to this hematological change.
Given these developments, the healthcare team revisits the treatment strategy. They deliberate on whether to further adjust the levothyroxine dosage or consider alternative interventions to better manage her thyroid function and alleviate her symptoms of fatigue and tremors. The team also contemplates the necessity of evaluating potential side effects of her current antipsychotic medication, which might be contributing to the leukopenia and cardiovascular symptoms. To address these multifaceted issues, the team decides to incorporate a hematologist and an endocrinologist into the care team for a more comprehensive evaluation, while maintaining weekly follow-up visits to monitor her progress closely and adapt the treatment plan as needed.