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16 December 2020: Articles  USA

A 61-Year-Old Man with SARS-CoV-2 Infection and Venous Thrombosis Presenting with Painful Swelling and Gangrene of the Lower Limb Consistent with Phlegmasia Cerulea Dolens

Rare disease

Abayomi Bamgboje1E*, Jungrak Hong1E, Savi Mushiyev2E, Gerald Pekler2E

DOI: 10.12659/AJCR.928342

Am J Case Rep 2020; 21:e928342

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Abstract

BACKGROUND: Coronavirus disease 2019 (COVID-19) is a novel infectious disease with an evolving understanding of its clinical manifestations, complications, and therapeutic implications. Thromboembolic disease and coagulopathy are common and have been seen in COVID-19 patients. Phlegmasia cerulea dolens had been reported in previous cases associated with malignancy which is a known cause of a procoagulable state. Severe acute respiratory syndrome coronavirus 2 (SARS-CoV-2) infection may also induce a procoagulable state and be associated with PCD.

CASE REPORT: A 61-year-old man presented with a painful, swollen limb and gangrene, findings consistent with a diagnosis of PCD due to venous thrombosis. The patient tested positive for SARS-CoV-2 infection after a nasopharyngeal swab sample using the XPRSARS-COV2-10 reverse transcription polymerase chain reaction kit. He had bilateral leg swelling with a gangrenous left fourth digit in the presence of a palpable peripheral pulse. His venous duplex showed bilateral acute deep venous thrombosis, whereas his arterial Doppler scan was normal and his skin biopsy was negative for vasculitis. One of our screening blood tests was suggestive of an antiphospholipid-like syndrome. These clinical and radiologic findings were consistent with PCD. This patient was promptly anticoagulated; other supportive treatments were also initiated. He had a significant resolution of his pedal swelling with the associated revitalization of his previously gangrenous toe.

CONCLUSIONS: This case report shows the importance of testing for SARS-CoV-2 infection in patients who present with unusual thrombotic symptoms and signs and highlights the potential severity of these thrombotic complications.

Keywords: COVID-19, Gangrene, Venous Thrombosis, Anticoagulants, COVID-19, Edema, Lower Extremity, Middle Aged

Background

A new type of viral pneumonia appeared in Wuhan, Hubei Province, China in December 2019 [1]. This viral pneumonia was named “2019 novel coronavirus” by the World Health Organization (WHO) on January 12, 2020 [2]. Coronaviruses are single-stranded positive-sense ribonucleic acid viruses with the ability to undergo mutation. Coronaviruses are known as etiologic agents for respiratory infection [3]. The coronavirus disease 2019 (COVID-19) is an illness of novel dimensions in terms of infectivity, morbidity, and mortality but without specific treatment [1]. The WHO declared the COVID-19 outbreak a pandemic on March 11, 2020 [4].

Severe acute respiratory syndrome coronavirus 2 (SARS-CoV2)-induced COVID 19 has been shown to affect people with preexisting comorbidities and cause serious disease [5,6]. Venous thrombosis and thromboembolic disease have been reported as highly prevalent and a major poor prognostic factor in COVID-19 patients [7]. In a single-center cohort study by Middeldorp et al. [8] of the 75 patients hospitalized in the intensive care unit (ICU) for COVID-19, venous thromboembolism was observed in 47% of them despite being on prophylactic antithrombotic drugs. In a systematic review article by Fontana et al. [9] the risk of venous thromboembolism ranged from 4.4% to 8.2% in all patients hospitalized for COVID-19, whereas the risk was significantly higher, up to 53.8%, for COVID-19 patients admitted into the ICU. Deep vein thrombosis (DVT) contributes 10–15% of hospital mortality in patients without COVID-19. The combined poor prognostic effect of DVT and COVID-19 cannot be overemphasized [10]. Early and rapid diagnosis of SARSCoV-2 infection using the WHO guidelines for testing with reverse transcription polymerase chain reaction (RT-PCR) is needed to establish a diagnosis and to commence anticoagulation to mitigate venous thromboembolism, which is a known complication. Some of the uncommon manifestations of venous thrombosis include phlegmasia alba dolens, phlegmasia ceru-lean dolens (PCD), and venous gangrene [10]. Warkentin [11] first described the diagnosis of PCD as evidence of limb necrosis in the presence of palpable or Doppler-identifiable arterial pulses, which suggests microvascular thrombosis. A similar diagnostic guideline was used by Maiti et al. [12]. PCD can be divided into 3 stages on the basis of severity: (I) noncomplicated PCD, (II) impending venous gangrene, and (III) venous gangrene [13]. Our index case had stage III.

A case of venous gangrene associated with SARS-CoV-2 infection in a pediatric age group had been reported by Visveswaran et al. [14] and a similar case was also reported by Morales et al. [15]. This report is a case of a 61-year-old man who presented with a painful, swollen limb and gangrene consistent with a diagnosis of PCD stage III and who tested positive for SARS-CoV-2 infection.

Case Report

DIAGNOSIS AND TREATMENT:

The patient was admitted for pneumonia secondary to coronavirus infection and bilateral lower-extremity DVT complicated with venous gangrene of the left fourth toe. Vasculitis was ruled out in this patient by a negative skin biopsy, so peripheral arterial disease also was less likely, as he had a normal arterial duplex of the lower-limb arteries.

The patient was managed with a nonrebreather oxygen mask (fraction of inspired oxygen [FiO2] 40%), antivirus, antibiotics, heparin, and symptomatic and supportive treatment. Additionally, he was placed on bilateral Unna boots by the podiatry unit and the same management was agreed on by the vascular surgeons while awaiting demarcation, but there was no demarcation as the gangrenous toe and pedal edema improved remarkably after 1 week on heparin and the improvement was progressive and sustained all through his admission (Figure 6). However, the patient’s hypoxemic respiratory failure worsened and his oxygen requirement had to be increased from 8 L/min to 15 L/min (FiO2 of 100%) to maintain an oxygen saturation of 88%. He could no longer speak in full sentences without getting short of breath and his kidney function deteriorated as he had an elevation of creatinine and blood urea nitrogen. On hospital day 12, because of his multi-organ dysfunction and overall progressive decline, a chest radiograph was repeated. Chest X-rays displayed the progression of bilateral interstitial infiltrating shadows with new effusions.

Chest computed tomographic angiography was subsequently performed and showed no evidence of pulmonary emboli, but revealed bilateral pleural effusions, large on the right and moderate on the left. Also present were ground-glass opacities in both upper lobes and the superior segments of both lower lobes. He was subsequently managed in the ICU for worsening hypoxemic respiratory failure and had a chest tube placed in the right pleural space, which drained hemorrhagic pleural effusions. After 30 days in the ICU, he had a repeat COVID-19 test, which was negative; the gangrenous toe became revitalized and his respiratory symptoms resolved. He was subsequently transferred to the rehabilitation unit for physical therapy. He was discharged 60 days after being admitted, having made significant clinical improvement.

Discussion

COVID-19 is a new disease caused by SARS-CoV-2 [16]. The viral particles move to the pulmonary terminal structure, causing an early alveolar exudation and lymphocytic infiltration in the pulmonary interstitium. The most common clinical manifestations are fever, cough, and shortness of breath [17]. In this patient who presented to our hospital with these symptoms, SARS-CoV-2 infection was confirmed by real-time RT-PCR.

A chest X-ray showed bilateral infiltrates. He also had painful bilateral pedal edema with a gangrenous left fourth toe in the presence of palpable peripheral pulses, normal arterial flow bilaterally, bilateral DVT, negative skin biopsy for vasculitis, positive antiphospholipid-like syndrome, elevated D-dimer, and other inflammatory markers. We believe that PCD stage III likely was triggered by SARS-CoV-2-induced procoagulable state. A similar case in a pediatric patient was published by Visveswaran et al. [14]. Venous gangrene as seen in our index case is an uncommon form of DVT that presents with pain and discoloration of the affected limb in the presence of radiologic evidence of DVT and the absence of an arterial occlusion [11].

The traditional Virchow’s triad of stasis, hypercoagulability, and endothelial dysfunction holds in COVID-19 patients; perhaps each component of the aforementioned triad is exacerbated by the SARS-CoV-2 infection [18].

Acute respiratory infections caused by various pathogens, including influenza virus, respiratory syncytial virus, and bacteria, are well-recognized triggers for thromboembolic events [19]. High concentrations of C-reactive protein (CRP) have been seen in patients with a first episode of venous thrombosis, suggesting a link with systemic inflammation; likewise, our patient had elevated CRP levels [20].

Patients with SARS-CoV-2 infection may be dehydrated because of fever, may have other secondary infections, and may be on prolonged bed rest as seen in our index case; these are all risk factors for DVT. SARS-CoV-2 infection is known to cause an antiphospholipid-like syndrome (hypercoagulability), which was also seen in our index case, ultimately putting our patient at high risk for thrombosis and venous gangrene, which he developed [21].

Given the high inflammatory burden of SARS-CoV-2 infection, the multiplier effect of a significant systemic inflammatory response and localized vascular inflammation as a result of endothelial dysfunction at the venous level in patients with background cardiovascular disease such as obesity with prolonged hospitalization (stasis) due to SARS-CoV-2 infection may likely trigger venous thromboembolism, as seen in our index case [22].

Increased amounts of circulating tissue factor, which sits at the apex of the coagulation cascade, is more prevalent in COVID-19 patients, and this may be the most important trigger for venous thrombosis and venous gangrene, as in this case [23–25]. Morales et al. [15] reported a case of PCD in a patient with SARS-CoV-2 infection and premorbid history of provoked DVT, whereas our index case had no history of DVT but presented de novo with bilateral DVT and PCD. Investigational therapies such as heparin for treating SARS-CoV-2 infection may have combined anticoagulation and antiviral properties [25]. Heparin was used in our index case in an attempt to mitigate the SARS-CoV-2 infection-induced venous gangrene both as a possible antiviral, anti-inflammatory, and an anticoagulant [26]. We also might have taken advantage of the possible anti-infective and anti-inflammatory properties of the medications used, which include: cefepime, azithromycin, and hydroxychloroquine, which was then the acceptable mode of care in an attempt to mitigate the background infection and inflammation that precipitated venous gangrene in our index case.

Conclusions

Cardiovascular abnormalities have been described in COVID-19 patients from previous studies, and venous thromboembolism is a major culprit in the excess mortality seen in these patients [5,27]. Compared with patients with cardiovascular disease without SARS-CoV-2 infection, those with a combined burden are likely to have higher mortality.

This paper looked at the complex interactions between background cardiovascular risk factors, SARS-CoV-2 infection, which is known to trigger a procoagulability mechanism, and the therapeutic implications. It is our opinion that the evaluation of the risk of DVT, early testing for SARS-CoV-2 infection in those with unusual thrombotic symptoms, and treatment of such thrombotic complications are of paramount importance in abating the morbidity and mortality in COVID-19 patients, as the pool of evidence from various studies shows that early initiation of anticoagulation with heparin in patients with SARS-CoV-2 infection, especially those with cardiovascular risk, can improve outcome [26,28–30].

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American Journal of Case Reports eISSN: 1941-5923
American Journal of Case Reports eISSN: 1941-5923