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Advances in Psychiatry and Neurology/Postępy Psychiatrii i Neurologii
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Opis przypadku

Zatorowość płucna – duży problem kliniczny w psychiatrii. Opisy przypadków

Karolina Sapota-Zaręba
1
,
Tadeusz Nasierowski
1

  1. Department of Psychiatry, Medical University of Warsaw, Poland
Adv Psychiatry Neurol 2021; 30 (4): 293-297
Data publikacji online: 2021/12/21
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PURPOSE

Pulmonary embolism (PE) and deep vein thrombo- sis (DVT) are components of venous thromboembolism (VTE), which overall is the third most common cardio- vascular disease. PE is the most severe clinical manifesta- tion of VTE [1]. This condition is also a common cause of death in psychiatry [2]. Patients diagnosed with mental illness have additional thromboembolic risk factors that are not included in scores used to assess VTE risk. Fur- thermore, mental illness is usually not listed as a risk fac- tor in studies on this disease. Increased thromboembolic risk in psychiatric patients is associated both with their condition and psychotropic medication. It is often diffi- cult to make contact with patients admitted to psychiatric units, in particular before appropriate treatment is initiated. Consequently, history-taking may also be limited. Patients with an acute episode of mental illness may have difficulties in expressing their symptoms. Some patients refuse to be diagnosed (e.g. to have their blood drawn or an ECG performed), e.g. because of psychosis.

Two case reports of patients with fatal PE during psychiatric hospitalization are presented below. The goal of this elaboration is to take notice of increased throm- boembolic risk in psychiatric patients, with a particular focus on patients with catatonic symptoms.

CASE REPORTS

Case 1

A 34-year old patient, repeatedly hospitalized in a psychiatric unit and diagnosed with paranoid schizo- phrenia, was admitted to the hospital with a referral from the internal medicine ward. He was bleeding from the upper gastrointestinal tract. Additionally, the patient was diagnosed with grade IV oesophagitis with ulcers ac- cording to the Los Angeles classification, acute haemor- rhagic gastritis, Helicobacter pylori infection, dehydration with electrolyte disturbances (hypokalaemia) and unde- fined liver failure. During the month prior to admission to the psychiatric ward the patient was hospitalized three times in a general ward, because his somatic condition deteriorated. Each time after he was discharged, he failed to comply with instructions and did not take prescribed medications. During his last hospitalization at the in- ternal medicine ward, he had an episode of upper gas- trointestinal bleeding. Therapeutic endoscopy was con- ducted to maintain vital functions. The procedure was performed under general anaesthesia because the patient was agitated, behaved aggressively and did not cooperate. In addition, he received 1 unit of fresh-frozen plasma. In the ward the patient was agitated, and pulled out his intra- venous line. He had to be placed in four-point restraints (it is not known for how long he was immobilised). The patient refused to take medications and attend fol- low-ups. Contact with the patient was difficult: he did not answer questions but only gesticulated. His behaviour suggested that he was preoccupied with psychotic symp- toms. Delusions of reference and delusions of grandeur prevailed among the few statements he made. After initial stabilisation of his somatic condition the patient was re- ferred to a psychiatric hospital.

Upon admission he presented without disturbance of consciousness; verbal contact was limited – he responded only to some questions with a delay (thought blocking) and he failed to make eye contact with examining phy- sician. He was indifferent and apathetic. The patient seemed to be preoccupied with psychotic sensations. No thromboembolic risk factor was identified in his Pad- ua Prediction Score based on the available information. It should be noted that it was not possible to take com- prehensive medical history because of the patient’s men- tal condition. It was also not possible to contact patient’s family to acquire more information.

The patient was initially mute at the ward. Passive neg- ativism was observed. ECG performed upon admission revealed sinus tachycardia (impression: “Normogram. Regular sinus rhythm, 106 bpm”). Olanzapine, 10 mg, was initiated orally, hypokalaemia was continued to be com- pensated intravenously. A proton pump inhibitor was ad- ministered in line with post-discharge instructions from the internal medicine ward. Four-point restraints had to be used once. The olanzapine dose was increased to 20 mg on two consecutive days. The patient’s mental status par- tially improved after several days – he started to answer questions and make eye contact with the examining physi- cian. He reported having auditory hallucinations and com- plained of physical malaise and recurrent abdominal pain. He was referred for an internal and surgical consultation, which revealed no significant abnormalities. ECG was per- formed at the time (“Normogram. Regular sinus rhythm, 70 bpm. Flattened negative T waves in lead II, III and aVF”). On the 9th day of hospitalization the patient was su- pervised more extensively while taking his medicines and oral olanzapine was replaced with orally disintegrating tab- lets, because several tablets were found hidden in his room. His mental condition did not improve. On the contrary, it deteriorated: he reported exacerbated auditory hallucina- tions, refused to eat, did not cooperate and resisted nurs- ing activities (passive and active negativism). The patient complained also of somatic symptoms: weakness, a burn- ing sensation in his chest that worsened upon inhalation, abdominal pain, nausea; he vomited undigested food sev- eral times. Another internal consultation was referred – there were no significant abnormalities and no indications for further diagnosis. On the 14th day of hospitalization it was decided to switch olanzapine to haloperidol, 2.5 mg/ day, in intramuscular injections. The injections were ad- ministered to the patient at the same dose for 5 next days. D-dimer levels were assayed. They were elevated: 817 ng/ ml (ULN of up to 500 ng/ml). The patient’s mental condi- tion continued to deteriorate despite the change in treat- ment. It was noted as follows: “The patient is lying in bed. He is not moving. He does not get up. He does not control his physiological needs”; “Muscle rigidity and negativity present while attempting to sit the patient down”. Mutism, periodic freeze responses and non-physiological postures upon attempted activation were observed. On the 19th day it was decided to re-initiate olanzapine, 20 mg/day. Sudden cardiac arrest against a background of pulseless electrical activity (PEA) occurred on the 23rd day of hospitalization. The patient died. Autopsy report stated: “Haemorrhagic pulmonary infarctions secondary to minor and moderate embolism. Pulmonary oedema”. Pulmonary embolism was indicated as the direct cause of death.

Case 2

A 36-year-old patient diagnosed with moderate in- tellectual disability and severe obsessive-compulsive disorder (OCD) was brought to the emergency room by an ambulance team with referral from a day mental health rehabilitation ward.

He was referred to the inpatient ward because of his mental status, which had been deteriorating for appro- ximately two months. His family claimed that he was be- coming more and more tense, irritable, and demanding. The patient wanted everyone do all activities for him and, when refused, responded with verbal aggression. During the day he was preoccupied with ritual gestures and ac- tivities. Stupor and mutism that lasted for several hours were observed before admission. Sometimes the patient showed active aggression towards people in his environ- ment. He was treated with fluvoxamine (200 mg/d) and risperidone (4.5 mg/d). It was decided to modify phar- macological treatment because of lack of improvement and symptoms that may have suggested the onset of se- rotonin syndrome (increased sweating, tachycardia, limb muscle tremor, dilated pupils). The risperidone dose was gradually reduced and olanzapine, 10 mg/d was initiated at the same time. The patient was referred to a hospital because his condition failed to improve.

Upon admission, the patient presented without disturbance of consciousness. His autopsychic and al- lopsychic orientation corresponded to his intellectu- al disability. He was indifferent, and was psychomotor sluggish, tense, hypomimic. He presented with vegetative symptoms of anxiety. Sometimes he froze. He answered questions selectively, without any reference to them. The answers were delayed and each of them was given with stereotypical grimacing, blinking and hyperventila- tion. It was difficult to assess productive symptoms, how- ever the patient denied having hallucinations. It was also difficult to perform physical examination because the pa- tient did not cooperate. The following significant abnor- malities were observed: severe obesity (BMI = 31.95), ankle swelling and gynaecomastia. The patient refused to have ECG performed.

Medical records revealed that the patient had been re- peatedly hospitalized in psychiatric units. He was 12 years old when he was hospitalized for the first time. At the time he presented with passive behaviour, apathy, and bizarre and maladjusted behaviour. During his last hospitaliza- tion at the inpatient ward two years previously, he was also diagnosed with OCD and schizophrenia in addition to intellectual disability. Catatonic stupor and refusal to eat and drink were observed for several years. Active negativism, muscle stiffness and exacerbating psychosis were reported. EEG revealed minor bilateral lesions in the temporal region.

Internal medicine history showed lipid metabo- lism disorders, impaired glucose tolerance and liver dysfunction (chronically elevated transaminase levels). The patient was diagnosed with arterial hypertension. He was treated with simvastatin, 20 mg/d and propranolol, 20 mg/d. The risk of VTE was assessed upon admission using the Padua Prediction Score. He scored 1 point (for obesity with BMI ≥ 30 kg/m2).

The patient was diagnosed with organic catatonia during his ongoing hospitalization. Risperidone was dis- continued on the ward. He was treated with fluvoxamine, 100 mg in the morning and 200 mg in the evening, and olanzapine, 10 mg in the evening. On the ward he lay in bed most of the time. He needed diapers and assistance with everyday activities. He was sluggish, acted bizarrely and engaged in compulsions. On the 15th day of hospital- ization the patient reported that he felt worse. He claimed to have pneumonia and demanded antibiotic therapy. Examination revealed minor basal rales, a body tempera- ture of 37.3°C, and “dry, intermittent cough that seemed forced”. His body temperature was normal during the in- ternal medicine consultation conducted two days later. Vesicular murmur was normal. Infection was excluded. However, symptoms suggesting infection persisted over the following days. These observations were made on the 21st day of hospitalization: “the patient has a produc- tive cough and symptoms of upper respiratory conges- tion”. On the 22nd day of hospitalization the patient was found lying in bed without contact. He was not breathing and there was no heart rate. Resuscitation was started. Asystole was found after connecting a cardiac monitor. The patient died despite all the activities performed. Autopsy revealed embolism in the medium and small ves- sels, suggesting pulmonary embolism as the main cause of death.

COMMENT

The presented case reports show certain similarities. Firstly, both patients were young men (34 and 36 years old, respectively) with a long-term history of psychiatric treatment. They presented with catatonic symptoms and were treated with olanzapine. Both spent most of their time in bed and were not able to function independent- ly, i.e. they required assistance and nursing with eating and drinking and diapering. In both cases the Padua Prediction Score was used to estimate thromboembolic risk on admission to the department and no indications for thromboprophylaxis were found. Using the example of the second case report, the need to reassess the risk of thromboembolic complications each time the patient’s condition changes should be remembered. In the patient described, on admission the risk of VTE was assessed at 1 point using the Padua Prediction Score (for obesi- ty with BMI ≥ 30 kg/m2). However, during hospitalization the patient remained in bed most of the time, which meant immobilization due to disability for ≥ 3 days, as- sessed on the Padua Prediction Score with 3 addition- al points. On re-evaluation, the patient would receive 4 points, and a total score ≥ 4 indicates high risk of VTE and is an indication for thromboprophylaxis [3]. Both men experienced sudden cardiac arrest and autopsy re- vealed PE as the main cause of death.

Pulmonary embolism is a common cause of death in patients with catatonia [4]. In 1995 McCall et al. de- scribed two cases of sudden death in young female pa- tients (aged 25 and 35) during catatonia and presented a literature review of 20 similar cases. PE was confirmed in autopsy in all patients. They died at least 2 weeks after they presented with catatonic symptoms. In most cases, death was sudden, without any prior symptoms [5].

A mortality review in psychiatric hospitals in Ken- tucky from 2002 to 2016 was published in 2017. Six out of 96 patients who died in this period were diagnosed with catatonia. All 6 patients died suddenly and autopsy revealed pulmonary embolism. The medical histories of all deceased patients was analysed in an attempt to decide whether any of those deaths were preventable. It was con- cluded that patient management modified at some stage would likely have saved 19 out of 96 deceased patients. Six patients diagnosed with pulmonary embolism with catatonia were in this group [6].

Increased risk of pulmonary embolism during epi- sodes of catatonia is associated with several factors. Pro- longed lack of physical activity slows down blood flow. Refusal to eat and drink, often associated with catatonia, may lead to dehydration, which in turn may increase blood coagulation. Productive symptoms can occur during episodes of catatonia. Psychosis and anxiety cause greater quantities of cortisol and catecholamines to be se- creted, damaging vascular the endothelium and increas- ing coagulation [7, 8]. It seems that symptoms of catato- nia can activate all the elements of Virchow’s triad, being the underlying mechanism of venous thromboembolism. Other signs of catatonia, such as mutism and negativism, make it impossible to communicate and cooperate with the patient, significantly hindering the diagnosis and treatment of pulmonary embolism and other conditions.

The issues discussed should be examined from anoth- er perspective – pulmonary embolism may induce deliri- um and manifest with symptoms that can be mistaken for catatonia, especially in patients with a history of this dis- order. Hu and Chiu presented a case report of a 75-year- old man with a long history of schizophrenia and cata- tonic symptoms. Reappearance of stupor, mutism and refusal to eat were interpreted as a relapse of catatonia. The patient presented with dyspnoea, minor tachycardia (102 bpm) and subfebrile temperature. These symptoms were associated with exacerbated chronic obstructive pulmonary disease. After retrospective analysis it was concluded that symptoms that had been interpreted as relapsed catatonia resulted in fact from delirium caused by a developing pulmonary embolism [9]. It should be emphasised that it is necessary to precisely differentiate between catatonia and delirium, especially where hypo- activity is concerned [10].

Both of these patients displayed all the risk factors for thromboembolism during catatonic episode present- ed above: prolonged immobility, refusal to eat and drink (which may lead to dehydration), psychotic symptoms, anxiety, limited contact and cooperation resulting from mutism and negativism.

Additionally, consideration should be given to the ef- fect of treatment used in a context of thromboembolic risk and possible symptoms that may have suggested de- veloping pulmonary embolism.

In both men, olanzapine was the main antipsychotic drug used. There are many case reports in the literature sug- gesting an increased risk of thromboembolism in patients treated with this atypical antipsychotic. Maempel et al. described the case of a 27-year-old patient diagnosed with massive pulmonary embolism about 2 days after an olanzapine overdose [11]. Another case report is about a 28-year-old man who was treated for bipolar disorder. He developed a massive pulmonary embolism 4 months after initiation of olanzapine, 10 mg/d. There were no other thromboembolic risk factors [12]. The following mechanisms of action of olanzapine that may increase thromboembolic risk are reported: reduced physical ac- tivity associated with sedation, weight gain and increased levels of prolactin, which has a pro-aggregating effect [13]. The affinity of olanzapine towards 5-HT2A receptors is also a possible mechanism of the prothrombotic effect of this antipsychotic, as it increases serotonin-induced platelet aggregation [14].

The main cause of death in both men was pulmonary embolism. PE is asymptomatic and is detected acciden- tally during other examinations or autopsy in about 50% of patients. In other patients symptoms are non-specific and may suggest many other disorders [15]. It should be noted that somatic complaints, associated with other causes, were reported in the first and second case. The first patient complained of weakness, a burning sensation in his chest that worsened upon inhalation, abdominal pain, nausea, and vomiting with undigested food several times. These complaints were interpreted, for example, as sequelae of recent bleeding from the upper gastrointesti- nal tract. The second patient reported symptoms of infec- tion and claimed to have pneumonia. He presented with cough and a subfebrile temperature, but these symptoms were not persistent. Essential physical examination did not raise any concern. But there are no symptoms that are pathognomonic for PE. This condition is non-specific and may resemble many other disorders, which is why it should always be taken into account during differential diagnosis, even in patients without obvious thromboem- bolic risk factors. Greater caution seems to be of particu- lar importance in patients with catatonia.

It should be emphasized that the assessment of the risk of thromboembolism according to the Padua Prediction Score should be used when a patient is admitted to a de- partment, and each time the patient’s condition changes or additional information about them is obtained, which may change their score.

Conflict of interest/Konflikt interesu

Absent./Nie występuje.

Financial support/Finansowanie

Absent./Nie występuje.

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